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19-1379; Rev 1; 4/99
NUAL KIT MA ATION ET EVALU TA SHE WS DA FOLLO
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
General Description Features
o Single-Supply Operation Down to +4V o 345MHz -3dB Bandwidth (MAX4311) 150MHz -3dB Bandwidth (MAX4313) o 540V/s Slew Rate (MAX4313) o Low 6.1mA Quiescent Supply Current o 40ns Channel Switching Time o Ultra-Low 10mVp-p Switching Transient o 0.06%/0.08 Differential Gain/Phase Error o Rail-to-Rail Outputs: Drives 150 to within 730mV of the Rails o Input Common-Mode Range Includes Negative Rail o Low-Power Shutdown Mode o Available in Space-Saving 8-Pin MAX and 16-Pin QSOP Packages
MAX4310-MAX4315
The MAX4310-MAX4315 single-supply mux-amps combine high-speed operation, low-glitch switching, and excellent video specifications. The six products in this family are differentiated by the number of multiplexer inputs and the gain configuration. The MAX4310/MAX4311/MAX4312 integrate 2-/4-/8-channel multiplexers, respectively, with an adjustable gain amplifier optimized for unity-gain stability. The MAX4313/MAX4314/MAX4315 integrate 2-/4-/8-channel multiplexers, respectively, with a +2V/V fixed-gain amplifier. All devices have 40ns channel switching time and low 10mVp-p switching transients, making them ideal for video-switching applications. They operate from a single +4V to +10.5V supply, or from dual supplies of 2V to 5.25V, and they feature Rail-to-Rail(R) outputs and an input common-mode voltage range that extends to the negative supply rail. The MAX4310/MAX4311/MAX4312 have a -3dB bandwidth of 280MHz/345MHz/265MHz and up to a 460V/s slew rate. The MAX4313/MAX4314/MAX4315, with 150MHz/127MHz/ 97MHz -3dB bandwidths up to a 540V/s slew rate, and a fixed gain of +2V/V, are ideally suited for driving backterminated cables. Quiescent supply current is as low as 6.1mA, while low-power shutdown mode reduces supply current to as low as 560A and places the outputs in a high-impedance state. The MAX4310-MAX4315's internal amplifiers maintain an open-loop output impedance of only 8 over the full output voltage range, minimizing the gain error and bandwidth changes under loads typical of most rail-to-rail amplifiers. With differential gain and phase errors of 0.06% and 0.08, respectively, these devices are ideal for broadcast video applications.
Ordering Information
PART MAX4310EUA MAX4310ESA MAX4311EEE MAX4311ESD MAX4312EEE MAX4312ESE MAX4313EUA MAX4313ESA MAX4314EEE MAX4314ESD MAX4315EEE MAX4315ESE TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 8 MAX 8 SO 16 QSOP 14 Narrow SO 16 QSOP 16 Narrow SO 8 MAX 8 SO 16 QSOP 14 Narrow SO 16 QSOP 16 Narrow SO
Applications
Video Signal Multiplexing Video Crosspoint Switching Flash ADC Input Buffers 75 Video Cable Drivers High-Speed Signal Processing Broadcast Video Medical Imaging Multimedia Products
Pin Configurations and Typical Operating Circuit appear at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Selector Guide
PART MAX4310 MAX4311 MAX4312 MAX4313 MAX4314 MAX4315 NO. OF INPUT CHANNELS 2 4 8 2 4 8 AMPLIFIER GAIN (V/V) +1 +1 +1 +2 +2 +2 PIN-PACKAGE 8-Pin SO/MAX 14-Pin Narrow SO, 16-Pin QSOP 16-Pin Narrow SO/QSOP 8-Pin SO/MAX 14-Pin Narrow SO, 16-Pin QSOP 16-Pin Narrow SO/QSOP 1
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to VEE) ..................................................12V Input Voltage....................................(VEE - 0.3V) to (VCC + 0.3V) All Other Pins ...................................(VEE - 0.3V) to (VCC + 0.3V) Output Current................................................................120mA Short-Circuit Duration (VOUT to GND, VCC or VEE) ....Continuous Continuous Power Dissipation (TA = +70C) 8-Pin SO (derate 5.9mW/C above +70C)...................471mW 8-Pin MAX (derate 4.1mW/C above +70C) ..............330mW 14-Pin SO (derate 8.3mW/C above +70C).................667mW 16-Pin SO (derate 8.7mW/C above +70C).................696mW 16-Pin QSOP (derate 8.3mW/C above +70C)............667mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10sec) .............................+300C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = 0, SHDN 4V, RL = VOUT = 2.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at , TA = +25C.) PARAMETER Operating Supply Voltage Range SYMBOL VCC CONDITIONS Inferred from PSRR test MAX4310/MAX4311/MAX4312, inferred from CMRR test MAX4313/MAX4314/1MAX4315, inferred from output voltage swing CMRR VOS TCVOS 0 VCM 2.2V, MAX4310/MAX4311/MAX4312 only MIN 4.0 0.035 0.035 73 95 5.0 7 1 IB IFB IOS RIN RIN ROUT MAX4310/MAX4311/ MAX4312 only Open loop Closed loop, AV = +1V/V IIN_ IFB, MAX4310/MAX4311/MAX4312 only MAX4310/MAX4311/MAX4312 only VIN varied over VCM, MAX4310/MAX4311/ MAX4312 only 7 7 0.1 3 70 8 0.025 0.025 35 1 50 1.9 59 2.0 2.1 k dB V/V 14 14 2 20 TYP MAX 10.5 VCC - 2.8 V VCC - 2.7 dB dB mV V/C mV A A A M k UNITS V
Input Voltage Range
Common-Mode Rejection Ratio Input Offset Voltage Input Offset Voltage Drift Input Offset Voltage Matching Input Bias Current Feedback Bias Current Input Offset Current Common-Mode Input Resistance Differential Input Resistance Output Resistance
MAX4313/MAX4314/MAX4315 Disabled Output Resistance Open-Loop Gain Voltage Gain ROUT AVOL AVCL MAX4310/MAX4311/MAX4312, open loop MAX4313/MAX4314/MAX4315 MAX4310/MAX4311/MAX4312, RL = 150 to GND, 0.25V VOUT 4.2V MAX4313/MAX4314/MAX4315, RL = 150 to GND, 0.25V VOUT 4.2V
2
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High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V, VEE = 0, SHDN 4V, RL = VOUT = 2.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at , TA = +25C.) PARAMETER SYMBOL RL = 150 Output Voltage Swing VOUT RL = 10k Output Current Power-Supply Rejection Ratio Quiescent Supply Current Shutdown Supply Current Logic-Low Threshold Logic-High Threshold Logic-Low Input Current Logic-High Input Current VIL VIH IIL IIH VIL VEE + 1V VIH VCC - 1V VCC - 1 -500 -320 0.3 5 IOUT PSRR ICC RL = 30 VCC = 4.0V to 10.5V MAX4310/MAX4313 MAX4311/MAX4314 MAX4312/MAX4315 SHDN VIL LOGIC CHARACTERISTICS (SHDN, A0, A1, A2) VEE + 1 V V A A CONDITIONS VCC - VOH VOL - VEE VCC - VOH VOL - VEE 75 52 MIN TYP 0.73 0.03 0.25 0.04 95 63 6.1 6.9 7.4 560 7.8 8.8 9.4 750 A mA MAX 0.9 0.06 0.4 0.07 mA dB V UNITS
MAX4310-MAX4315
AC ELECTRICAL CHARACTERISTICS
(V CC = +5V; V EE = 0; SHDN 4V; R L = 150; V CM = 1.5V; A VCL = +1V/V (MAX4310/MAX4311/MAX4312), A VCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25C; unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MAX4310 MAX4311 -3dB Bandwidth BW(-3dB) VOUT = 100mVp-p MAX4312 MAX4313 MAX4314 MAX4315 MAX4310 MAX4311 -0.1dB Bandwidth BW(-0.1dB) VOUT = 100mVp-p MAX4312 MAX4313 MAX4314 MAX4315 MIN TYP 280 345 265 150 127 97 60 40 35 40 78 46 MHz MHz MAX UNITS
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3
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
AC ELECTRICAL CHARACTERISTICS (continued)
(V CC = +5V; V EE = 0; SHDN 4V; R L = 150; V CM = 1.5V; A VCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25C; unless otherwise noted.) PARAMETER SYMBOL CONDITIONS CONDITIONS MAX4310 MAX4311 Full-Power Bandwidth FPBW VOUT = 2Vp-p MAX4312 MAX4313 MAX4314 MAX4315 MAX4310 MAX4311 Slew Rate SR VOUT = 2Vp-p MAX4312 MAX4313 MAX4314 MAX4315 Settling Time to 0.1% Gain Matching tS VOUT = 2V step MAX4310/MAX4311/MAX4312 MAX4313/MAX4314/MAX4315 MIN TYP 110 100 80 40 90 70 460 430 345 540 430 310 42 25 0.05 ns dB V/s MHz MAX UNIT
Matching between channels over -3dB bandwidth AVCL = +1V/V, RL = 150 to VCC/2 RL = 150 to VCC/2 AVCL = +1V/V, RL = 150 to VCC/2 RL = 150 to VCC/2 MAX4310/MAX4311/MAX4312
0.06 %
Differential Gain Error
DG
MAX4313/MAX4314/MAX4315
0.09
MAX4310/MAX4311/MAX4312
0.08 degrees
Differential Phase Error
DG
MAX4313/MAX4314/MAX4315 MAX4310/ MAX4311/ MAX4312 f = 3kHz f = 2MHz f = 20MHz f = 3kHz f = 2MHz f = 20MHz
0.03 -89 -80 -47 -95 -72 -47 -85 -76 -88 -95 -83 -76 dBc dBc dB dBc
Spurious-Free Dynamic Range
SFDR
VOUT = 2Vp-p MAX4313/ MAX4314/ MAX4315 f = 1MHz, VOUT = 2Vp-p f = 1MHz, VOUT = 2Vp-p
Second Harmonic Distortion Third Harmonic Distortion Total Harmonic Distortion THD
MAX4310/MAX4311/MAX4312 MAX4313/MAX4314/MAX4315 MAX4310/MAX4311/MAX4312 MAX4313/MAX4314/MAX4315 MAX4310/MAX4311/MAX4312 MAX4313/MAX4314/MAX4315
f = 1MHz, VOUT = 2Vp-p
4
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High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
AC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V; VEE = 0; SHDN 4V; RL = 150; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25C; unless otherwise noted.) PARAMETER All-Hostile Crossstalk Off-Isolation Output Impedance Input Capacitance Input Voltage Noise Density Input Current Noise Density SWITCHING CHARACTERISTICS Channel Switching Time Enable Time from Shutdown Disable Time to Shutdown Switching Transient tSW tON tOFF 40 50 120 10 ns ns ns mVp-p ZOUT CIN en in SYMBOL f = 10MHz, VIN = 2Vp-p CONDITIONS MAX4310/MAX4313 MAX4311/MAX4314 MAX4312/MAX4315 MIN TYP -95 -60 -52 -82 3 2 14 1.3 dB pF nV/Hz pA/Hz dB MAX UNITS
MAX4310-MAX4315
SHDN = 0, f = 10MHz, VIN = 2Vp-p f = 10MHz Channel on or off f = 10kHz f = 10kHz
Typical Operating Characteristics
(VCC = +5V; VEE = 0; SHDN 4V; RL = 150 to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25C; unless otherwise noted.)
MAX4310 SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4310-01
MAX4310 GAIN FLATNESS vs. FREQUENCY
MAX4310/15 toc02
MAX4310 LARGE-SIGNAL GAIN vs. FREQUENCY
3 2 1 GAIN (dB) 0 -1 -2 -3 -4 -5 -6 VOUT = 2Vp-p
MAX4310/15-03
4 3 2 1 GAIN (dB) 0 -1 -2 -3 -4 -5 -6 100k 1M 10M FREQUENCY (Hz) 100M VOUT = 100mVp-p
0.5 0.4 0.3 GAIN FLATNESS (dB) 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 VOUT = 100mVp-p
4
1G
100k
1M
10M FREQUENCY (Hz)
100M
1G
100k
1M
10M FREQUENCY (Hz)
100M
1G
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5
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
Typical Operating Characteristics (continued)
(VCC = +5V; VEE = 0; SHDN 4V; RL = 150 to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25C; unless otherwise noted.)
MAX4311 SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4311 toc04
MAX4311 GAIN FLATNESS vs. FREQUENCY
MAX4310/15 toc05
MAX4311 LARGE-SIGNAL GAIN vs. FREQUENCY
1 0 -1 GAIN (dB) -2 -3 -4 -5 -6 -7 -8 VOUT = 2Vp-p
MAX4311 toc06
2 1 0 -1 GAIN (dB) -2 -3 -4 -5 -6 -7 -8 1 10 100 VOUT = 100mVp-p
0.2 0.1 0 GAIN FLATNESS (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 VOUT = 100mVp-p
2
1000
1
10
100
1000
1
10
100
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
MAX4312 SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4310/15 toc07
MAX4312 GAIN FLATNESS vs. FREQUENCY
MAX4310/15 toc08
MAX4312 LARGE-SIGNAL GAIN vs. FREQUENCY
1 0 -1 GAIN (dB) -2 -3 -4 -5 -6 -7 -8 VOUT = 2Vp-p
MAX4310/15 toc09
2 1 0 -1 GAIN (dB) -2 -3 -4 -5 -6 -7 -8 1 10 100 VOUT = 100mVp-p
0.2 0.1 0 GAIN FLATNESS (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 VOUT = 100mVp-p
2
1000
1
10
100
1000
1
10
100
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
MAX4313 SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4310/15-toc10
MAX4313 GAIN FLATNESS vs. FREQUENCY
MAX4310/15-toc11
MAX4313 LARGE-SIGNAL GAIN vs. FREQUENCY
3 2 1 GAIN (dB) 0 -1 -2 -3 -4 -5 -6 VOUT = 2Vp-p
MAX4310/15-toc12
4 3 2 1 GAIN (dB) 0 -1 -2 -3 -4 -5 -6 100k 1M 10M FREQUENCY (Hz) 100M VOUT = 100mVp-p
0.5 0.4 0.3 GAIN FLATNESS (dB) 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 VOUT = 100mVp-p
4
1G
100k
1M
10M FREQUENCY (Hz)
100M
1G
100k
1M
10M FREQUENCY (Hz)
100M
1G
6
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High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
Typical Operating Characteristics (continued)
(VCC = +5V; VEE = 0; SHDN 4V; RL = 150 to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25C; unless otherwise noted.)
MAX4314 SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4310/15 toc13
MAX4310-MAX4315
MAX4314 GAIN FLATNESS vs. FREQUENCY
MAX4310/15 toc14
MAX4314 LARGE-SIGNAL GAIN vs. FREQUENCY
1 0 -1 GAIN (dB) -2 -3 -4 -5 -6 -7 -8 VOUT = 2Vp-p
MAX4310/15 toc15
2 1 0 -1 GAIN (dB) -2 -3 -4 -5 -6 -7 -8 1
VOUT = 100mVp-p
0.2 0.1 0 GAIN FLATNESS (dB) -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8
VOUT = 100mVp-p
2
10
100
1000
1
10
100
1000
1
10
100
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
MAX4315 SMALL-SIGNAL GAIN vs. FREQUENCY
MAX4310/15 toc16
MAX4315 GAIN FLATNESS vs. FREQUENCY
0.1 0 GAIN FLATNESS (dB) -0.1 GAIN (dB) -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 VOUT = 100mVp-p
MAX4310/15 toc17
MAX4315 LARGE-SIGNAL GAIN vs. FREQUENCY
1 0 -1 -2 -3 -4 -5 -6 -7 -8 VOUT = 2Vp-p
MAX4310/15 toc18
2 1 0 -1 GAIN (dB) -2 -3 -4 -5 -6 -7 -8 1
VOUT = 100mVp-p
0.2
2
10
100
1000
1
10
100
1000
1
10
100
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
MAX4310/MAX4311/MAX4312 HARMONIC DISTORTION vs. FREQUENCY
MAX4310/15 toc19
MAX4313/MAX4314/MAX4315 HARMONIC DISTORTION vs. FREQUENCY
MAX4310/15-20
POWER-SUPPLY REJECTION vs. FREQUENCY
-10 POWER-SUPPLY REJECTION (dB) -20 -30 -40 -50 -60 -70 -80 -90 -100
MAX4310/15-21
-20 -30 HARMONIC DISTORTION (dBc) -40 -50 -60 -70 -80 3RD HARMONIC -90 -100 100k 1M 10M 2ND HARMONIC VOUT = 2Vp-p
-20 -30 HARMONIC DISTORTION (dBc) -40 -50 -60 -70 -80 -90 -100 3RD HARMONIC 2ND HARMONIC VOUT = 2Vp-p
0
100M
100k
1M
10M
100M
100k
1M
10M FREQUENCY (Hz)
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
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7
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
Typical Operating Characteristics (continued)
(VCC = +5V; VEE = 0; SHDN 4V; RL = 150 to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25C; unless otherwise noted.)
MAX4310/MAX4311/MAX4312 COMMON-MODE REJECTION vs. FREQUENCY
MAX4310/15-toc22
OFF-ISOLATION vs. FREQUENCY
MAX4310/15-toc23
MAX4310/MAX4313 All-HOSTILE CROSSTALK vs. FREQUENCY
30 10 CROSSTALK (dB) -10 -30 -50 -70 -90 -110 -130 -150
MAX4310/15-toc24
0 -10 COMMON-MODE REJECTION (dB) -20 -30 -40 -50 -60 -70 -80 -90 -100 10k 100k 1M 10M 100M
-10 -20 -30 ISOLATION (dB) -40 -50 -60 -70 -80 -90 -100 -110
50
1G
100k
1M
10M FREQUENCY (Hz)
100M
1G
0.1
1
10 FREQUENCY (MHz)
100
1000
FREQUENCY (Hz)
MAX4312/MAX4315 ALL-HOSTILE CROSSTALK vs. FREQUENCY
MAX4310/15 toc25
MAX4311/MAX4314 ALL-HOSTILE CROSSTALK vs. FREQUENCY
MAX4310/15 toc26
OUTPUT IMPEDANCE vs. FREQUENCY
MAX4310/15-toc27
50 30 10 CROSSTALK (dB) -10 -30 -50 -70 -90 -110 -130 -150 0.1 1 10 FREQUENCY (MHz) 100
50 30 10 CROSSTALK (dB) -10 -30 -50 -70 -90 -110 -130 -150
100
OUTPUT IMPEDANCE ()
10
1
0.1
0.01 0.1 1 10 FREQUENCY (MHz) 100 1000 100k 1M 10M FREQUENCY (Hz) 100M 1G
1000
VOLTAGE-NOISE DENSITY vs. FREQUENCY (INPUT REFERRED)
MAX4310/15 toc28a
CURRENT-NOISE DENSITY vs. FREQUENCY (INPUT REFERRED)
MAX4310/15 toc29
MAX4310 LARGE-SIGNAL PULSE RESPONSE
MAX4310/15 toc30
100
100
VOLTAGE-NOISE DENSITY (nV/Hz)
CURRENT-NOISE DENSITY (pA/Hz)
IN (1V/div)
10 OUT (1V/div)
10 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
1 10 100 1k 10k 100k 1M 10M 10ns/div FREQUENCY (Hz)
8
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High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
Typical Operating Characteristics (continued)
(VCC = +5V; VEE = 0; SHDN 4V; RL = 150 to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25C; unless otherwise noted.)
MAX4311 LARGE-SIGNAL PULSE RESPONSE
MAX4310/15-toc33
MAX4310-MAX4315
MAX4312 LARGE-SIGNAL PULSE RESPONSE
MAX43110/15 toc32
MAX4313 LARGE-SIGNAL PULSE RESPONSE
IN (500mV/div)
MAX4310/15-toc33
IN (1V/div)
IN (1V/div)
OUT (1V/div)
OUT (1V/div)
OUT (1V/div)
10ns/div
10ns/div
10ns/div
MAX4314 LARGE-SIGNAL PULSE RESPONSE
MAX4310/15-toc33
MAX4315 LARGE-SIGNAL PULSE RESPONSE
MAX4310/15 toc35
MAX4310 SMALL-SIGNAL PULSE RESPONSE
MAX4310/15 toc36
IN (500mV/div)
IN (500mV/div)
IN (50mV/div)
VOUT (1V/div)
OUT (IV/div)
OUT (50mV/div)
10ns/div
10ns/div
10ns/div
MAX4311 SMALL-SIGNAL PULSE RESPONSE
MAX4310/15 toc37a
MAX4312 SMALL-SIGNAL PULSE RESPONSE
MAX4310/15 toc38
MAX4313 SMALL-SIGNAL PULSE RESPONSE
IN (50mV/div)
MAX4310/15-toc39
IN (50mV/div)
IN (50mV/div)
OUT (50mV/div)
OUT (50mV/div)
OUT (50mV/div)
10ns/div
10ns/div
10ns/div
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9
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
Typical Operating Characteristics (continued)
(VCC = +5V; VEE = 0; SHDN 4V; RL = 150 to VCC/2; VCM = 1.5V; AVCL = +1V/V (MAX4310/MAX4311/MAX4312), AVCL = +2V/V (MAX4313/MAX4314/MAX4315); TA = +25C; unless otherwise noted.) MAX4310 MAX4315 SMALL-SIGNAL PULSE RESPONSE MAX4314 SMALL-SIGNAL PULSE RESPONSE (CL = 10pF) SMALL-SIGNAL PULSE RESPONSE
IN (50mV/div)
MAX4310/15-toc42 MAX4311 toc MAX4311 toc
IN (50mV/div)
IN (50mV/div)
OUT (50mV/div)
OUT (50mV/div)
OUT (50mV/div)
10ns/div
10ns/div
10ns/div
MAX4310 SMALL-SIGNAL PULSE RESPONSE (CL = 22pF)
MAX4310-TOC22
MAX4313 SMALL-SIGNAL PULSE RESPONSE (CL = 10pF)
MAX4310/15-toc44
MAX4313 SMALL-SIGNAL PULSE RESPONSE (CL = 22pF)
IN (50mV/div)
MAX431015-toc45
IN (50mV/div)
IN (50mV/div)
OUT (50mV/div)
OUT (50mV/div)
OUT (50mV/div)
10ns/div
10ns/div
10ns/div
CHANNEL-SWITCHING TRANSIENT
MAX4310/15 toc46
SHUTDOWN RESPONSE TIME
MAX4310-TOC27
A0 (2.5V/div)
SHDN (2.0V/div)
OUT (10mV/div)
OUT (1V/div)
20ns/div
100ns/div
10
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High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
Pin Description
PIN MAX4310 SO/ MAX 1 MAX4311 SO 2 QSOP 2 MAX4312 SO/ QSOP 3 MAX4313 SO/ MAX 1 MAX4314 SO 2 QSOP 2 MAX4315 SO/ QSOP 3 NAME FUNCTION
MAX4310-MAX4315
A0
Channel Address Logic Input 0 Channel Address Logic Input 1 Channel Address Logic Input 2 Shutdown Input Positive Power Supply Amplifier Input 0 Amplifier Input 1 Amplifier Input 2 Amplifier Input 3 Amplifier Input 4 Amplifier Input 5 Amplifier Input 6 Amplifier Input 7 Negative Power Supply. Ground for single-supply operation. Amplifier Feedback Input Ground Amplifier Output Not connected. Tie to ground plane for optimal performance.
--
1
1
2
--
1
1
2
A1
-- 2 3 4 5 -- -- -- -- -- -- 6 7 -- 8 --
-- 12 4 5 7 8 10 -- -- -- -- 11 13 -- 14 3, 6, 9
-- 14 4 5 7 10 12 -- -- -- -- 13 15 -- 16 3, 6, 8, 9, 11
1 14 4 5 6 7 8 9 10 11 12 13 15 -- 16 --
-- 2 3 4 5 -- -- -- -- -- -- 6 -- 7 8 --
-- 12 4 5 7 8 10 -- -- -- -- 11 -- 13 14 3, 6, 9
-- 14 4 5 7 10 12 -- -- -- -- 13 -- 15 16 3, 6, 8, 9, 11
1 14 4 5 6 7 8 9 10 11 12 13 -- 15 16 --
A2 SHDN VCC IN0 IN1 IN2 IN3 IN4 IN5 IN6 IN7 VEE FB GND OUT N.C.
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11
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
_______________Detailed Description
The MAX4310/MAX4311/MAX4312 combine 2-channel, 4-channel, or 8-channel multiplexers, respectively, with an adjustable-gain output amplifier optimized for closed-loop gains of +1V/V (0dB) or greater. The MAX4313/MAX4314/MAX4315 combine 2-channel, 4channel, or 8-channel multiplexers, respectively, with a +2V/V (6dB) fixed-gain amplifier, optimized for driving back-terminated cables. These devices operate from a single supply voltage of +4V to +10.5V, or from dual supplies of 2V to 5.25V. The outputs may be placed in a high-impedance state and the supply current minimized by forcing the SHDN pin low. The input multiplexers feature short 40ns channel-switching times and small 10mVp-p switching transients. The input capacitance remains constant at 1pF whether the channel is on or off, providing a predictable input impedance to the signal source. These devices feature single-supply, rail-to-rail, voltage-feedback output amplifiers that achieve up to 540V/s slew rates and up to 345MHz -3dB bandwidths. These devices also feature excellent harmonic distortion and differential gain/phase performance. output swings from 30mV above VEE to within 730mV of the supply rail. Local feedback around the output stage ensures low open-loop output impedance to reduce gain sensitivity to load variations. This feedback also produces demand-driven bias current to the output transistors for 95mA drive capability while constraining total supply current to only 6.1mA.
Feedback and Gain Resistor Selection (MAX4310/MAX4311/MAX4312)
Select the MAX4310/MAX4311/MAX4312 gain-setting feedback (RF) and input (RG) resistors to fit your application. Large resistor values increase voltage noise and interact with the amplifier's input and PC board capacitance. This can generate undesirable poles and zeros, and can decrease bandwidth or cause oscillations. For example, a noninverting gain of +2V/V configuration (RF = RG) using 1k resistors, combined with 2pF of input capacitance and 1pF of PC board capacitance, causes a pole at 159MHz. Since this pole is within the amplifier bandwidth, it jeopardizes stability. Reducing the 1k resistors to 100 extends the pole frequency to 1.59GHz, but could limit output swing by adding 200 in parallel with the amplifier's load resistor. Table 1 shows suggested RF and RG values for the MAX4310/MAX4311/MAX4312 when operating in the noninverting configuration (shown in Figure 1). These values provide optimal AC response using surfacemount resistors and good layout techniques, as discussed in the Layout and Power-Supply Bypassing section. Stray capacitance at the FB pin causes feedback resistor decoupling and produces peaking in the frequencyresponse curve. Keep the capacitance at FB as low as possible by using surface-mount resistors and by avoiding the use of a ground plane beneath or beside these resistors and the FB pin. Some capacitance is unavoidable; if necessary, its effects can be neutralized by adjusting RF. Use 1% resistors to maintain consistency over a wide range of production lots.
__________Applications Information
Rail-to-Rail Outputs, Ground-Sensing Input
The input common-mode range extends from the negative supply rail to VCC - 2.7V with excellent commonmode rejection. Beyond this range, multiplexer switching times may increase and the amplifier output is a nonlinear function of the input, but does not undergo phase reversal or latchup. The output swings to within 250mV of VCC and 40mV of VEE with a 10k load. With a 150 load to ground, the
75 CABLE 4 RT 75 IN0 OUT 8
RT 75
75 CABLE
RF 75 CABLE 5 RT 75 IN1 A0 FB 7
RT 75
Table 1. Bandwidth and Gain with Suggested Gain-Setting Resistors (MAX4310/MAX4311/MAX4312)
GAIN (V/V) 1 2 5 GAIN (dB) 0 6 14 20 RF () 0 500 500 500 RG () 500 120 56 -3dB BW (MHz) 280 80 20 10 0.1dB BW (MHz) 60 30 4 2
RG
MAX4310
1
Figure 1. MAX4310 Noninverting Gain Configuration
12
10
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High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
20 0
INPUT CURRENT (A) 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 0 50 100 150 200 250 300 350 400 450 500 LOGIC-LOW THRESHOLD (mV ABOVE VEE)
-20 INPUT CURRENT (A) -40 -60 -80 -100 -120 -140 -160 0 50 100 150 200 250 300 350 400 450 500 LOGIC-LOW THRESHOLD (mV ABOVE VEE)
Figure 2. Logic-Low Input Current vs. VIL (SHDN, A0, A1, A2)
Figure 4. Logic-Low Input Current vs. VIL with 10k Series Resistor
LOGIC INPUT
For normal operation, drive SHDN high. If the shutdown function is not used, connect SHDN to VCC.
Layout and Power-Supply Bypassing
10k INSHDN, A0, A1, A2 OUT
The MAX4310-MAX4315 have very high bandwidths and consequently require careful board layout, including the possible use of constant-impedance microstrip or stripline techniques. To realize the full AC performance of these high-speed amplifiers, pay careful attention to power-supply bypassing and board layout. The PC board should have at least two layers: a signal and power layer on one side, and a large, low-impedance ground plane on the other side. The ground plane should be as free of voids as possible, with one exception: the feedback (FB) should have as low a capacitance to ground as possible. Therefore, layers that do not incorporate a signal or power trace should not have a ground plane. Whether or not a constant-impedance board is used, it is best to observe the following guidelines when designing the board: 1) Do not use wire-wrapped boards (they are too inductive) or breadboards (they are too capacitive). 2) Do not use IC sockets; they increase parasitic capacitance and inductance. 3) Keep signal lines as short and straight as possible. Do not make 90 turns; round all corners. 4) Observe high-frequency bypassing techniques to maintain the amplifier's accuracy and stability. 5) Use surface-mount components. They generally have shorter bodies and lower parasitic reactance, yielding better high-frequency performance than through-hole components.
13
MAX431_
IN+
Figure 3. Circuit to Reduce Logic-Low Input Current
Low-Power Shutdown Mode
All parts feature a low-power shutdown mode that is activated by driving the SHDN input low. Placing the amplifier in shutdown mode reduces the quiescent supply current to 560A and places the output into a highimpedance state, typically 35k. By tying the outputs of several devices together and disabling all but one of the paralleled amplifiers' outputs, multiple devices may be paralleled to construct larger switch matrices. For MAX4310/MAX4311/MAX4312 application circuits operating with a closed-loop gain of +2V/V or greater, consider the external-feedback network impedance of all devices used in the mux application when calculating the total load on the output amplifier of the active device. The MAX4313/MAX4314/MAX4315 have a fixed gain of +2V/V that is internally set with two 500 thinfilm resistors. The impedance of the internal feedback resistors must be taken into account when operating multiple MAX4313/MAX4314/MAX4315s in large multiplexer applications.
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High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
75 CABLE 4 RT 75 500 75 CABLE 5 RT 75 IN1 A0 RT 75 IN0 OUT 8 75 CABLE
ISOLATION RESISTANCE RISO ()
RT 75
OUT
25
20
500
15
MAX4313 GND
1 7
10 0 50 100 150 200 250 CAPACITIVE LOAD (pF)
Figure 5. Video Line Driver
4 3 2 1 GAIN (dB) 0 -1 -2 -3 -4 -5 -6 VOUT = 100mVp-p 100k 1M 10M FREQUENCY (Hz) 100M 1G 5pF LOAD 10pF LOAD 15pF LOAD
Figure 8. Optimal Isolation Resistance vs. Capacitive Load
4 3 2 1 GAIN (dB) 0 -1 -2 -3 -4 -5 -6 VOUT = 100mVp-p 100k 1M 10M FREQUENCY (Hz) 100M 1G 90pF LOAD 120pF LOAD 47pF LOAD
MAX4310-FIG06
Figure 6. Small-Signal Gain vs. Frequency with Capacitive Load and No Isolation Resistor
Figure 9. Small-Signal Gain vs. Frequency with Load Capacitance and 27 Isolation Resistor
75 CABLE 4 RT 75 500 75 CABLE 5 RT 75 IN1 A0 CL RL IN0 OUT 8 RISO
500
MAX4313 GND
1 7
Figure 7. Using an Isolation Resistor (RISO) for High Capacitive Loads
The bypass capacitors should include a 100nF, ceramic surface-mount capacitor between each supply pin and the ground plane, located as close to the package as possible. Optionally, place a 10F tantalum capacitor at the power-supply pins' point of entry to the PC board to ensure the integrity of incoming supplies. The power-supply trace should lead directly from the tantalum capacitor to the VCC and VEE pins. To minimize parasitic inductance, keep PC traces short and use surface-mount components. If input termination resistors and output back-termination resistors are used, they should be surface-mount types, and should be placed as close to the IC pins as possible.
Video Line Driver
The MAX4310-MAX4315 are well-suited to drive coaxial transmission lines when the cable is terminated at both ends, as shown in Figure 5. Cable frequency response can cause variations in the signal's flatness.
14
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MAX4310-FIG09
MAX4310-FIG08
30
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
Table 2. Input Control Logic
MAX4310/MAX4313 SHDN 0 1 1 SHDN 0 1 1 1 1 SHDN A2 -- -- -- A2 -- -- -- -- -- A2 X 0 0 0 0 1 1 1 1 A1 -- -- -- A1 X 0 0 1 1 A1 X 0 0 1 1 0 0 1 1 A0 X 0 1 A0 X 0 1 0 1 A0 X 0 1 0 1 0 1 0 1 CHANNEL SELECTED None, High-Z Output 0 1 CHANNEL SELECTED None, High-Z Output 0 1 2 3 CHANNEL SELECTED None, High-Z Output 0 1 2 3 4 5 6 7
MAX4311/MAX4314
MAX4312/MAX4315
Figure 10. High-Speed EV Board Layout--Component Side
0 1 1 1 1 1 1 1 1
forms an L-C resonant circuit with the capacitive load, which causes peaking in the frequency response and degrades the amplifier's phase margin. Although the MAX4310-MAX4315 are optimized for AC performance and are not designed to drive highly capacitive loads, they are capable of driving up to 20pF without oscillations. However, some peaking may occur in the frequency domain (Figure 6). To drive larger capacitive loads or to reduce ringing, add an isolation resistor between the amplifier's output and the load (Figure 7). The value of RISO depends on the circuit's gain and the capacitive load (Figure 8). Figure 9 shows the MAX4310-MAX4315 frequency response with the isolation resistor and a capacitive load. With higher capacitive values, bandwidth is dominated by the RC network formed by RISO and CL; the bandwidth of the amplifier itself is much higher. Also note that the isolation resistor forms a divider that decreases the voltage delivered to the load.
Figure 11. High-Speed EV Board Layout--Solder Side
Driving Capacitive Loads
A correctly terminated transmission line is purely resistive and presents no capacitive load to the amplifier. Reactive loads decrease phase margin and may produce excessive ringing and oscillation (see Typical Operating Characteristics). Another concern when driving capacitive loads originates from the amplifier's output impedance, which appears inductive at high frequencies. This inductance
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15
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
Digital Interface
The multiplexer architecture of the MAX4310-MAX4315 ensures that no two input channels are ever connected together. Channel selection is accomplished by applying a binary code to channel address inputs. The address decoder selects input channels, as shown in Table 2. All digital inputs are CMOS compatible. SMA connectors were used for best high-frequency performance. Inputs and outputs do not match a 75 line, but this does not affect performance since distances are extremely short. However, in applications that require lead lengths greater than one-quarter of the wavelength of the highest frequency of interest, use constant-impedance traces. Fully assembled evaluation boards are available for the MAX4313 in an SO package.
High-Speed Evaluation Board
Figures 10 and 11 show the evaluation board and present a suggested layout for the circuits. This board was developed using the techniques described in the Layout and Power-Supply Bypassing section of this data sheet. The smallest available surface-mount resistors were used for feedback and back-termination to minimize their distance from the part, reducing the capacitance associated with longer lead lengths.
Chip Information
TRANSISTOR COUNT: 156
Typical Operating Circuit
+4V TO +10.5V 0.1F 3 VCC
MAX4313
5 4 IN1 IN0 A0 500 VEE SHDN 6 27 GND OUT 8 500 75 75 75 CABLE VIDEO OUTPUT
1
16
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High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
Pin Configurations
TOP VIEW
MAX4310
A0 1 SHDN 2 VCC 3 +8 7 6 5 OUT FB VEE IN1
MUX
IN0 4
SO/MAX
MAX4311
A1 1 A0 2 N.C. 3 VCC 4 IN0 5 N.C. 6 IN1 7 MUX 14 OUT 13 FB 12 SHDN 11 VEE 10 IN3 9 N.C. 8 IN2 A1 1 A0 2 N.C. 3 VCC 4 IN0 5 N.C. 6 IN1 7 N.C. 8
MAX4311
16 OUT 15 FB 14 SHDN MUX 13 VEE 12 IN3 11 N.C. 10 IN2 9 N.C. A2 1 A1 2 A0 3 VCC 4 IN0 5 IN1 6 IN2 7 IN3 8
MAX4312
16 OUT 15 FB 14 SHDN MUX 13 VEE 12 IN7 11 IN6 10 IN5 9 IN4
SO QSOP
SO/QSOP
MAX4314 MAX4313
A0 1 SHDN 2 VCC 3 IN0 4 MUX
500 500
MAX4314
14 OUT
500
MAX4315
16 OUT 15 GND 14 SHDN A2 1
500
A1 1 8 OUT 7 GND 6 VEE A0 2
500
A2 1
500
16 OUT 15 GND 14 SHDN
13 GND 12 SHDN MUX 11 VEE 10 IN3 9 8 N.C. IN2
A1 2
500
A1 2
500
N.C. 3 VCC 4 IN0 5 N.C. 6
A0 3 VCC 4 IN0 5 N.C. 6 IN1 7 N.C. 8 MUX
A0 3 VCC 4 IN0 5 IN1 6 IN2 7 IN3 8 MUX
13 VEE 12 IN3 11 N.C. 10 IN2 9 N.C.
13 VEE 12 IN7 11 IN6 10 IN5 9 IN4
5 IN1
SO/MAX
IN1 7
SO
QSOP
SO/QSOP
N.C. = NOT INTERNALLY CONNECTED. TIE TO GROUND PLANE FOR OPTIMAL PERFORMANCE.
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17
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
Package Information
8LUMAXD.EPS
18
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High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
Package Information (continued)
QSOP.EPS
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19
High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers MAX4310-MAX4315
Package Information (continued)
SOICN.EPS
20
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