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19-3674; Rev 0; 5/05
2.5V Video Amplifier with Reconstruction Filter
General Description
The MAX9502 small, low-power video amplifier with integrated reconstruction filter operates from a supply voltage as low as 2.5V. The small size and the low minimum supply voltage make the MAX9502 ideal for portable applications such as mobile phones, digital still cameras, and camcorders. The MAX9502 DC-couples the input and the output, resulting in a very small solution. The MAX9502 input can be directly connected to the output of a video digital-toanalog converter (DAC). The reconstruction filter is implemented as a 4th-order Chebyshev with a minimum passband of 5.5MHz, 3dB attenuation at 8MHz, and 55dB attenuation at 27MHz. The output amplifier provides a closed-loop gain of +6dB (MAX9502G) or +12dB (MAX9502M), and can drive a 2VP-P video signal into a 150 load to ground. The output signal is level-shifted so the sync tip is 110mV (typ) above ground. The MAX9502 operates from a 2.5V to 3.6V single supply and consumes only 5.3mA quiescent supply current. An active-low shutdown mode reduces the supply current to 0.01A. The MAX9502 is available in tiny 6-pin DFN (1mm x 1.5mm x 0.8mm) and 5-pin SC70 packages. The device is specified over the -40C to +85C extended temperature range.
Features
Tiny 6-Pin DFN (1mm x 1.5mm x 0.8mm) and 5-Pin SC70 Packages DC-Coupled Input and Output Save Board Space 4-Pole Chebyshev Filter 5.5MHz Passband 55dB Attenuation at 27MHz 0.01A Low-Current Shutdown Mode 2.5V to 3.6V Single-Supply Operation Video Amplifier with Fixed Gains of +6dB (MAX9502G) or +12dB (MAX9502M)
MAX9502
Ordering Information
PART* MAX9502GEXK-T MAX9502GELT-T MAX9502MEXK-T MAX9502MELT-T PIN-PACKAGE 5 SC70-5 6 DFN-6 (L611-1) 5 SC70-5 6 DFN-6 (L611-1) GAIN (dB) +6 +6 +12 +12 TOP MARK ARV AU ARW
AV *All devices are specified over the -40C to +85C operating temperature range.
Applications
Mobile Phones/Smartphones Digital Still Cameras Portable Media Players Camcorders
Typical Operating Circuit appears at end of data sheet.
Other Portable Video Amplifiers
PRODUCT MAX9503 MAX9505 MAX4090 MAX9504 FEATURES DirectDriveTM, LPF, DC-coupled input/output, 50dB at 27MHz, TQFN DirectDrive, LPF, DC-coupled input/output, 50dB at 27MHz analog switch, TQFN Video amplifier, input clamp, DFN, SOT23, SC70 Video amplifier, 2 DC-coupled loads, optional DC offset bias, DFN, SOT23
1 IN
Pin Configurations
TOP VIEW
OUT 6 N.C. 5 VCC 4 IN 1 5 OUT
MAX9502
2 3
GND 2
MAX9502
SHDN 3
4
VCC
GND SHDN
DFN
SC70
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
2.5V Video Amplifier with Reconstruction Filter MAX9502
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..............................................................-0.3V to +4V SHDN, IN, OUT to GND..............................-0.3V to (VCC + 0.3V) OUT Short-Circuit Duration to VCC, GND..................Continuous Continuous Power Dissipation (TA = +70C) 5-Pin SC70 (derate 3.1mW/C above +70C)........... .247mW 6-Pin DFN (derate 2.1mW/C above +70C)............168mW Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+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 = SHDN = 3.0V, GND = 0V, no load, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER Supply Voltage Range Quiescent Supply Current Shutdown Supply Current SYMBOL VCC ICC ISHDN CONDITIONS Guaranteed by PSRR VIN = 0V, 2.5V VCC 3.6V, SHDN = VCC VSHDN = 0V Guaranteed by DC voltage gain (MAX9502G) Input Voltage Range VIN Guaranteed by DC voltage gain (MAX9502M) VIN = 0V VIN/IIN RL = 150 to GND, VCC = 2.5V to 3V Measured at OUT, VIN = 0V, RL = 150 to GND MAX9502G, RL = 150 to GND Output Voltage Swing VOUT MAX9502M, RL = 150 to GND Output Short-Circuit Current Threshold Output Resistance Shutdown Output Impedance DC Power-Supply Rejection Ratio LOGIC INPUTS (SHDN) Logic-Low Level Logic-High Level Logic Input Current VIL VIH IIL SHDN = GND and VCC 2.0 1 0.8 V V A VCC = 2.5V, 0 VIN 1.05V VCC = 3.0V, 0 VIN 1.2V VCC = 2.5V, 0 VIN 0.525V VCC = 3.0V, 0 VIN 0.6V 1.97 2.26 1.97 2.26 MAX9502G MAX9502M 5.5 11.5 VCC = 2.5V VCC = 3.0V VCC = 2.5V VCC = 3.0V 0 0 0 0 3.5 17 6 12 110 2.1 2.4 2.1 2.4 95 0.15 VSHDN = 0V VIN = 0V, 2.5V VCC 3.6V 50 4 90 6.5 12.5 230 2.23 2.54 VP-P 2.23 2.54 mA k dB MIN 2.5 5.3 0.01 TYP MAX 3.6 9 1 1.05 1.2 0.525 0.6 10 A M dB mV V UNITS V mA A
Input Current Input Resistance DC Voltage Gain (Note 2) Output Sync-Tip Level
IIN RIN AV VSTIP
ISC ROUT ROUT(OFF) PSRRDC
Sourcing (Note 3)
2
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2.5V Video Amplifier with Reconstruction Filter
AC ELECTRICAL CHARACTERISTICS
(VCC = SHDN = 3.0V, GND = 0V, RL = 150 to GND, TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER Passband Flatness Attenuation Power-Supply Rejection Ratio Output Impedance Differential Gain Error Differential Phase Error fdt PSRR ZOUT DG DP SYMBOL CONDITIONS VOUT = 2VP-P, f = 100kHz to 5.5MHz, flatness is referred to 100kHz VOUT = 2VP-P, attenuation is referred to 100kHz f = 100kHz VOUT = 1.5V DC; f = 5MHz NTSC, VOUT = 2VP-P NTSC, VOUT = 2VP-P MAX9502G MAX9502M MAX9502G MAX9502M f = 8MHz f = 27MHz 35 MIN -1 3 55 56 2.5 0.4 0.4 0.4 0.4 0.2 0.3 0.4 0.4 0 0 (d/d) SNR f = 100kHz to 5.5MHz VOUT = 2VP-P, 100kHz to 5MHz MAX9502G MAX9502M MAX9502G MAX9502M MAX9502G (VIN = 1V) MAX9502M (VIN = 0.5V) MAX9502G (VIN = 1V) MAX9502M (VIN = 0.5V) 30 30 68 65 800 ns 800 220 ns 175 TYP MAX +1 UNITS dB dB dB % degrees
MAX9502
2T Pulse-to-Bar K Rating 2T Pulse Response 2T Bar Response Nonlinearity Line Time Distortion Field Time Distortion Group-Delay Variation Peak Signal to RMS Noise
2T = 250ns; bar time is 18s; the beginning 2.5% and the ending 2.5% of the bar time are ignored 2T = 250ns 2T = 250ns; bar time is 18s; the beginning 2.5% and the ending 2.5% of the bar time are ignored 5-step staircase
K% K% K% % % % ns dB
Enable Time
tON
VSHDN = 3V, VOUT settled to within 1% of the final voltage
Disable Time
tOFF
VSHDN = 0V, VOUT settled to below 1% of the output voltage
Note 1: All devices are 100% production tested at TA = +25C. Specifications over temperature limits are guaranteed by design. Note 2: DC voltage gain (AV) is a two-point measurement in which the output voltage swing is divided by the input voltage swing. Note 3: Short-circuit current is the trip current for the protection. During the protection, OUT is switched alternatively on and off.
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3
2.5V Video Amplifier with Reconstruction Filter MAX9502
Typical Operating Characteristics
(VCC = SHDN = 3.0V, GND = 0V, RL = 150 to GND.)
MAX9502G SMALL-SIGNAL BANDWIDTH
MAX9502 toc01
MAX9502M SMALL-SIGNAL BANDWIDTH
MAX9502 toc02
MAX9502G SMALL-SIGNAL GAIN FLATNESS
VOUT = 100mVP-P 8 RESPONSE (dB) 7 6 5 4
MAX9502 toc03
20 10 0 RESPONSE (dB) -10 -20 -30 -40 -50 VOUT = 100mVP-P -60 0.1 1 10
20 10 0 RESPONSE (dB) -10 -20 -30 -40 -50 VOUT = 100mVP-P -60
9
3 0.1 1 10 100 0.1 1 FREQUENCY (MHz) 10 FREQUENCY (MHz)
100
FREQUENCY (MHz)
MAX9502M SMALL-SIGNAL GAIN FLATNESS
MAX9502 toc04
MAX9502G LARGE-SIGNAL BANDWIDTH
MAX9502 toc05
MAX9502M LARGE-SIGNAL BANDWIDTH
10 0 RESPONSE (dB) -10 -20 -30 -40 -50
MAX9502 toc06
15 14 RESPONSE (dB) 13 12 11 10 VOUT = 100mVP-P 9 0.1 1 FREQUENCY (MHz)
20 10 0 RESPONSE (dB) -10 -20 -30 -40 -50 VOUT = 2VP-P -60
20
VOUT = 2VP-P -60 1 10 100 0.1 1 10 100
10
0.1
FREQUENCY (MHz)
FREQUENCY (MHz)
MAX9502G LARGE-SIGNAL GAIN FLATNESS
MAX9502 toc07
MAX9502M LARGE-SIGNAL GAIN FLATNESS
MAX9502 toc08
MAX9502G GROUP DELAY
180 160
MAX9502 toc09
9 8 RESPONSE (dB) 7 6 5 4 VOUT = 2VP-P 3 0.1 1 FREQUENCY (MHz)
15 14 RESPONSE (dB) 13 12 11 10 VOUT = 2VP-P 9
200
DELAY (ns) 0.1 10
140 120 100 80 60 40
10
1 FREQUENCY (MHz)
0.1
1 FREQUENCY (MHz)
10
4
_______________________________________________________________________________________
2.5V Video Amplifier with Reconstruction Filter
Typical Operating Characteristics (continued)
(VCC = SHDN = 3.0V, GND = 0V, RL = 150 to GND.)
MAX9502
MAX9502M GROUP DELAY
MAX9502 toc10
MAX9502G POWER-SUPPLY REJECTION RATIO
MAX9502 toc11
MAX9502M POWER-SUPPLY REJECTION RATIO
-10 -20 RESPONSE (dB) -30 -40 -50 -60 -70 -80 -90
MAX9502 toc12
200 180 160 DELAY (ns) 140 120 100 80 60 40 0.1 1 FREQUENCY (MHz)
0 -10 -20 RESPONSE (dB) -30 -40 -50 -60 -70 -80 -90
0
10
-100 0.0001
0.001
0.01
0.1
1
10
-100 0.0001
0.001
0.01
0.1
1
10
FREQUENCY (MHz)
FREQUENCY (MHz)
SUPPLY CURRENT vs. TEMPERATURE
MAX9502 toc13
SUPPLY CURRENT vs. SHDN INPUT VOLTAGE
MAX9502 toc14
SHUTDOWN LOGIC THRESHOLD vs. SUPPLY VOLTAGE
VSHDN = RISING SHUTDOWN LOGIC THRESHOLD (V) 2.5 2.0 1.5 1.0 0.5 0
MAX9502 toc15
7.0 6.5 SUPPLY CURRENT (mA) 6.0 5.5 5.0 4.5 4.0 3.5 3.0 -40 -15 10 35 60 MAX9502G MAX9502M
6.0 5.5 5.0 SUPPLY CURRENT (mA) 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0
3.0
VSHDN = RISING
85
0
0.5
1.0
1.5
2.0
2.5
3.0
2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 SUPPLY VOLTAGE (V)
TEMPERATURE (C)
SHDN INPUT VOLTAGE (V)
MAX9502G VOLTAGE GAIN vs. TEMPERATURE
MAX9502 toc16
MAX9502M VOLTAGE GAIN vs. TEMPERATURE
MAX9502 toc17
MAX9502G DIFFERENTIAL GAIN AND PHASE
DIFFERENTIAL GAIN (%) 0.4 0.2 0.1 -0.1 -0.3 -0.4 1 0.8 0.4 0 -0.4 -0.8 1 2 3 4 5 6 7 2 3 4 5 6 7
MAX9502 toc18
6.5
12.5
6.3
12.3
GAIN (dB)
GAIN (dB)
6.1
12.1
5.9
11.9
5.7
11.7
5.5 -40 -15 10 35 60 85 TEMPERATURE (C)
11.5 -40 -15 10 35 60 85 TEMPERATURE (C)
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DIFFERENTIAL PHASE (deg)
5
2.5V Video Amplifier with Reconstruction Filter MAX9502
Typical Operating Characteristics (continued)
(VCC = SHDN = 3.0V, GND = 0V, RL = 150 to GND.)
MAX9502M DIFFERENTIAL GAIN AND PHASE
DIFFERENTIAL GAIN (%) 0.2 0 -0.2 -0.4 1 0.8 0.4 0 -0.4 -0.8 1 2 3 4 5 6 7 2 3 4 5 6 7
MAX9502 toc19
MAX9502G 2T RESPONSE
MAX9502 toc20
0.4
IN 200mV/div
DIFFERENTIAL PHASE (deg)
OUT 400mV/div
100ns/div
MAX9502M 2T RESPONSE
MAX9502 toc21
MAX9502G MODULATED 12.5T RESPONSE
MAX9502 toc22
IN 100mV/div
IN 200mV/div
OUT 400mV/div
OUT 400mV/div
100ns/div
400ns/div
MAX9502M MODULATED 12.5T RESPONSE
MAX9502 toc23
MAX9502G NTC-7 COMPOSITE RESPONSE
MAX9502 toc24
IN 100mV/div
IN 500mV/div 0V
OUT 400mV/div
OUT 1V/div 0V
400ns/div
10s/div
6
_______________________________________________________________________________________
2.5V Video Amplifier with Reconstruction Filter
Typical Operating Characteristics (continued)
(VCC = SHDN = 3.0V, GND = 0V, RL = 150 to GND.)
MAX9502
MAX9502M NTC-7 COMPOSITE RESPONSE
MAX9502 toc25
MAX9502G MULTIBURST RESPONSE
MAX9502 toc26
MAX9502M MULTIBURST RESPONSE
MAX9502 toc27
IN 250mV/div 0V
IN 500mV/div 0V
IN 250mV/div 0V
OUT 1V/div 0V
OUT 1V/div 0V
OUT 1V/div 0V
10s/div
10s/div
10s/div
MAX9502G FIELD SQUARE-WAVE RESPONSE
MAX9502 toc28
MAX9502M FIELD SQUARE-WAVE RESPONSE
MAX9502 toc29
IN 500mV/div 0V
IN 250mV/div 0V
OUT 1V/div 0V
OUT 1V/div 0V 2ms/div 2ms/div
Pin Description
PIN DFN 1 2 3 4 5 6 SC70 1 2 3 4 -- 5 NAME IN GND SHDN VCC N.C. OUT Video Input Ground Active-Low Shutdown Input. Connect to GND to shutdown. Positive Power Supply No Connection. Not internally connected. Video Output FUNCTION
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7
2.5V Video Amplifier with Reconstruction Filter MAX9502
Detailed Description
The MAX9502 filters and amplifies the video DAC output in applications such as digital still cameras and mobile phones. The MAX9502 consists of a lowpass filter and an output video buffer capable of driving a standard 150 video load to ground. The MAX9502G output buffer provides a fixed gain of +6dB, while the MAX9502M output buffer provides a fixed gain of +12dB. signal with a sync tip from 0 to 50mV and the MAX9502M accepts a composite video signal with a sync tip from 0 to 25mV. A typical current-output DAC that operates from a single supply usually creates a composite video signal with a sync tip very close to ground. Hence, the DAC output can be directly connected to the MAX9502 input. Keep the board trace as short as possible to minimize parasitic stray capacitance and prevent unintentional high-frequency attenuation.
Filter
The MAX9502 contains a 4th-order Chebyshev reconstruction filter. The Chebyshev-type response features a 0.4dB flat passband for NTSC and PAL signals. The stopband offers 55dB (typ) of attenuation at 27MHz and above (see the Typical Operating Characteristics).
Output Considerations
The MAX9502 output must be DC-coupled. No AC-coupling capacitors are allowed. The MAX9502 connects directly to the video cable through a 75 series backtermination resistor. The other end of the cable should be properly terminated with a 75 resistor as well. Because of this configuration, the peak-to-peak amplitude as well as the DC level of the signal is divided by two. The MAX9502 output signal is level-shifted up so the sync tip is around 110mV.
Output Amplifier
The MAX9502G features a +6dB gain, while the MAX9502M features a +12dB gain. Operating from a 2.5V to 3.0V supply, the output amplifier is able to drive a 2V signal into a 150 video load to ground. Operating from a 3.0V to 3.6V supply, the output amplifier is able to drive a 2.4VP-P signal into a 150 video load to ground. The output is typically offset 110mV above ground to guarantee linear operation of the amplifier. The MAX9502 output only sources current; all loads should be connected to ground. Short-Circuit Protection The MAX9502 typical application circuit includes a 75 back-termination resistor that limits short-circuit currents for an external short applied at the video output. The MAX9502 features internal output short-circuit protection to prevent device damage in prototyping and applications where the amplifier output can be directly shorted. Short-circuit protection activates if the output is short-circuited and the output current exceeds 95mA. During short-circuit protection, the output of the MAX9502 is shut off for 12s and then turns on for 0.8s. If the short is still present, the MAX9502 output shuts off again. Extended short circuits result in a pulsed output. The device resumes normal operation after the short is removed.
Power-Supply Bypassing and Layout Considerations
The MAX9502 operates from a single-supply voltage down to 2.5V, allowing for low-power consumption. Bypass VCC to GND with a 0.1F capacitor. Place all external components as close to the device as possible.
Typical Operating Circuit
VCC 0.1F
MAX9502
ON OFF VIDEO ASIC VIDEO DAC IN LOWPASS FILTER SHDN SHUTDOWN CIRCUIT
GAIN = +6dB MAX9502G GAIN = +12dB MAX9502M
VIDEO AMP
OUT
75 Z0 = 75
Applications Information
Input Considerations
The MAX9502 input is DC-coupled. When the supply voltage is between a 2.5V and 3V supply, the input voltage range extends from ground to 1.05V for the MAX9502G and from ground to 0.525V for the MAX9502M. When the supply voltage is between 3V and 3.6V, the input voltage range extends from ground to 1.2V for the MAX9502G and from ground to 0.6V for the MAX9502M. The MAX9502G accepts a composite video
8
75 TELEVISION GND
Chip Information
PROCESS: BICMOS
_______________________________________________________________________________________
2.5V Video Amplifier with Reconstruction Filter
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)
MAX9502
3
A
4 TOPMARK 2
e
5
b
6 PIN 1 0.075x45
PIN 1 INDEX AREA
AAA
1
E
L
L2
3
2 A A
1
D TOP VIEW
A1 SIDE VIEW
L1
BOTTOM VIEW
b
A A1 D E L L1 L2 b e
COMMON DIMENSIONS MIN. 0.64 -1.45 0.95 0.30 --0.17 NOM. 0.72 0.20 1.50 1.00 0.35 --0.20 0.50 BSC. MAX. 0.80 -1.55 1.05 0.40 0.08 0.05 0.23
SECTION A-A
TITLE:
PACKAGE OUTLINE, 6L uDFN, 1.5x1.0x0.8mm
APPROVAL DOCUMENT CONTROL NO. REV.
-DRAWING NOT TO SCALE-
21-0147
C
1
1
_______________________________________________________________________________________
6L UDFN.EPS
9
2.5V Video Amplifier with Reconstruction Filter MAX9502
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE, 5L SC70
21-0076
C
1
1
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.
SC70, 5L.EPS

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