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19-1806; Rev 1; 8/03
KIT ATION EVALU ILABLE AVA
Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications
General Description Features
o +5V Single-Supply Operation o 44MHz to 878MHz Operating Frequency Range o Guaranteed 7.4dB (min) Input Return Loss Over Frequency Range o LNA Performance at ICC = 93mA (RBIAS = 15k) 15dB Gain 2.8dB Noise Figure +17.5dBm Input IP3 +27dBm Input IP2 +2.7dBm Input 1dB Compression Point o Loop-Out Amplifier Performance at ICC = 93mA (RBIAS = 15k) 8.7dB Gain 4.2dB Noise Figure +17dBm Input IP3 +29dBm Input IP2 -0.5dBm Input 1dB Compression Point o Programmable Linearity vs. Supply Current
MAX2130
The MAX2130 broadband, low-distortion, low-noise, two-output amplifier performs preamp, loop-out, and buffer functions in TV tuner applications. The device integrates functions typically achieved with discrete components into the space-saving 8-pin MAX-EP package. The MAX2130 provides a gain of +15dB with a noise figure less than 3.2dB over the 44MHz to 878MHz frequency range. The MAX2130 features an externally adjustable bias control, set with a single resistor, that allows the user to meet minimum linearity requirements while reducing current consumption. The device operates from a +5V single supply and only requires 93mA of supply current when nominally biased.
________________________Applications
DVB-T Digital Broadcast Receivers Digital/Terrestrial TV Tuners Set-Top Boxes Cable Modems Analog TV Tuners
Ordering Information
PART MAX2130EUA TEMP RANGE -40C to +85C PIN-PACKAGE 8 MAX-EP*
Pin Configuration appears at end of data sheet.
*Exposed paddle
Typical Operating Circuit
VCC
VCC 10F OPTIONAL: DYNAMIC LINEARITY ADJUSTMENT CIRCUIT RADJ DAC VADJ RBIAS 15k 1000pF 47pF
VCC
CHOKE MURATA BLM11A221S OUT1
220pF
1000pF
LNA OUTPUT 0.1F
MAX2130
INPUT 0.1F 1.2V BIAS IN
GND
GND
GND
OUT2 0.1F
LOOP-OUT OUTPUT
________________________________________________________________ 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.
Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications MAX2130
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..............................................................-0.3V to +6V BIAS, OUT2 to GND .....................................-0.3 to (VCC + 0.3V) IN Input Power................................................................+15dBm OUT1 to GND ...........................................................-0.3V to +6V OUT2 Short-Circuit Duration ......................................Continuous Continuous Power Dissipation (TA = +70C) 8-Pin MAX-EP (derate 15.4mW/C above +70C) ........1.2W 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.
CAUTION! ESD SENSITIVE DEVICE
DC ELECTRICAL CHARACTERISTICS
(VCC = +4.75V to +5.25V, TA = -40C to +85C, RBIAS = 15k TA = +25C, unless otherwise noted.)
PARAMETER Supply Voltage TA = +25C Supply Current RBIAS = 30k BIAS = unconnected
1%;
no input signals applied. Typical values are at VCC = +5V,
MIN 4.75 93 49 10 TYP MAX 5.25 104 mA UNITS V
CONDITIONS
AC ELECTRICAL CHARACTERISTICS
(MAX2130 EV kit, VCC = +4.75V to +5.25V, RBIAS = 15k TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER LOW-NOISE AMPLIFIER (LNA) Operating Frequency Range Gain Gain Flatness Noise Figure Input 1dB Compression Point Input Third-Order Intercept Point Input Second-Order Intercept Point IN Return Loss OUT1 Return Loss Maximum Load for Stable Operation OUT1 to IN Isolation (Note 2) 18 VCC = +3.5V (Note 3) (Note 4) (Note 5) (Notes 2, 6) fIN = 44MHz to 878MHz 7.4 (Note 2) TA = -40C to +85C (Note 2) 2.8 2.7 2.1 17.5 27 8.6 8.7 Any load 21 dB 44 13.4 15 878 16.6 0.8 3.2 MHz dB dB dB dBm dBm dBm dB dB
1%,
fIN = 500MHz, ZO = 75. Typical values are at VCC = +5V,
MIN TYP MAX UNITS
CONDITIONS
2
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Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications MAX2130
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2130 EV kit, VCC = +4.75V to +5.25V, RBIAS = 15k TA = +25C, unless otherwise noted.) (Note 1)
PARAMETER LOOP-OUT AMPLIFIER Operating Frequency Range Gain Noise Figure Input 1dB Compression Point Input Third-Order Intercept Point Input Second-Order Intercept Point OUT2 Return Loss Maximum Load for Stable Operation OUT2 to IN Isolation OUT2 to OUT1 Isolation (Note 2) (Note 2) 24.5 11.0 VCC = +3.5V (Note 3) (Note 4) (Note 5) fIN = 44MHz to 878MHz (Note 2) 44 7.1 8.7 4.2 -0.5 -3.7 17 29 16.6 Any load 27 12.5 dB dB 878 10.2 4.6 MHz dB dB dBm dBm dBm dB
1%,
fIN = 500MHz, ZO = 75. Typical values are at VCC = +5V,
MIN TYP MAX UNITS
CONDITIONS
Note 1: Note 2: Note 3: Note 4: Note 5: Note 6:
Specifications are guaranteed by design and characterization, except for gain which is production tested. Specifications are guaranteed over the operating frequency range. Operation possible with VCC = +3.5V. See Typical Operating Characteristics. Two tones at 500MHz and 506MHz, -20dBm per tone. Two tones at 500MHz and 550MHz, -20dBm per tone. Output load has worst-case 6dB return loss.
Typical Operating Characteristics
(MAX2130 EV kit, VCC = +5V, RBIAS = 15k 1%, TA = +25C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
MAX2130 toc01
SUPPLY CURRENT vs. RBIAS
MAX2130 toc02
GAIN vs. FREQUENCY RBIAS = 10k
16 15 14 GAIN (dB) 13 12 11 10 9 8 7 LOOP-OUT AMPLIFIER 0 200 400 600 800 1000 LNA
MAX2130 toc03
98 97 96 SUPPLY CURRENT (mA) 95 94 93 92 91 90 89 88 -40 -15 10 35 60
130 120 SUPPLY CURRENT (mA) 110 100 90 80 70 60 50 10.0 12.5 15.0 17.5 RBIAS (k) 20.0 22.5
17
85
25.0
TEMPERATURE (C)
FREQUENCY (MHz)
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Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications MAX2130
Typical Operating Characteristics (continued)
(MAX2130 EV kit, VCC = +5V, RBIAS = 15k 1%, TA = +25C, unless otherwise noted.)
GAIN vs. FREQUENCY RBIAS = 15k
MAX2130 toc04
GAIN vs. FREQUENCY RBIAS = 25k
MAX2130 toc05
LNA NOISE FIGURE vs. FREQUENCY
MAX2130 toc06
17 16 15 14 GAIN (dB) 13 12 11 10 9 8 7 0 200 400 600 LOOP-OUT AMPLIFIER TA = +85C TA = +25C TA = +25C LNA
TA = -40C
17 16 15 14 GAIN (dB) 13 12 11 10 9 8 7 LOOP-OUT AMPLIFIER LNA
5
4 NOISE FIGURE (dB)
TA = +85C
TA = +85C
3
TA = -40C
2
TA = +25C TA = -40C
1
0 0 200 400 600 800 1000 0 200 400 600 800 1000 FREQUENCY (MHz) FREQUENCY (MHz)
800
1000
FREQUENCY (MHz)
LOOP-OUT AMPLIFIER NOISE FIGURE vs. FREQUENCY
MAX2130 toc07
NOISE FIGURE vs. RBIAS
MAX2130 toc08
INPUT P1dB vs. TEMPERATURE
4 3 INPUT P1dB (dBm) 2 1 0 -1 -2 -3 -4 -5 LOOP-OUT AMPLIFIER LNA
MAX2130 toc09
6 TA = +85C 5 NOISE FIGURE (dB) 4 3 2 1 0 0 200 400 600 800 TA = +25C TA = -40C
5.0 4.5 4.0 NOISE FIGURE (dB) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 LNA LOOP-OUT AMPLIFIER
5
1000
10.0
12.5
15.0
17.5 RBIAS (k)
20.0
22.5
25.0
-40
-15
10
35
60
85
FREQUENCY (MHz)
TEMPERATURE (C)
INPUT P1dB vs. RBIAS
MAX2130 toc10
INPUT IP2 vs. TEMPERATURE
MAX2130 toc11
LNA INPUT IP2 vs. RBIAS
MAX2130 toc12
4 3 2 INPUT P1dB (dBm) 1 0 -1 -2 -3 LOOP-OUT AMPLIFIER -4 -5 10.0 12.5 15.0 17.5 RBIAS (k) 20.0 22.5 LNA
35 34 33 INPUT IP2 (dBm) 32 31 30 29 28 27 26 25 LNA LOOP-OUT AMPLIFIER
45 40 100MHz INPUT IP2 (dBm) 35 30 25 20 800MHz 15
600MHz
25.0
-40
-15
10
35
60
85
10
15 RBIAS (k)
20
25
TEMPERATURE (C)
4
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Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications MAX2130
Typical Operating Characteristics (continued)
(MAX2130 EV kit, VCC = +5V, RBIAS = 15k 1%, TA = +25C, unless otherwise noted.)
LOOP-OUT AMPLIFIER INPUT IP2 vs. RBIAS
MAX2130 toc13
INPUT IP3 vs. TEMPERATURE
MAX2130-14
LNA INPUT IP3 vs. RBIAS
600MHz 18 INPUT IP3 (dBm)
MAX2130 toc15
45 100MHz 40 INPUT IP2 (dBm)
19.0 18.5 18.0 INPUT IP3 (dBm) 17.5 17.0 16.5 LOOP-OUT AMPLIFIER 16.0 LNA
20
35 600MHz 30
16 100MHz 14 800MHz 12
25 800MHz 20 10 15 RBIAS (k) 20 25 15.5 15.0 -40 -15 10 35 60 85 TEMPERATURE (C)
10 10 15 RBIAS (k) 20 25
LOOP-OUT AMPLIFIER INPUT IP3 vs. RBIAS
MAX2130 toc16
ISOLATION vs. FREQUENCY
MAX2130 toc17
IN PORT RETURN LOSS vs. FREQUENCY
Zo = 75 35 RETURN LOSS (dB) 30 25 20 15 10
MAX2130 toc18
20 600MHz 18 INPUT IP3 (dBm)
0 OUT2 TO OUT1 -10 ISOLATION (dB) -20 -30 OUT2 TO IN -40 -50 OUT1 TO IN
40
16
14 100MHz 12 800MHz 10 10 15 RBIAS (k) 20 25
5 0 0 200 400 600 800 1000 0 200 400 600 800 1000 FREQUENCY (MHz) FREQUENCY (MHz)
-60
OUT1 PORT RETURN LOSS vs. FREQUENCY
MAX2130 toc19
OUT2 PORT RETURN LOSS vs. FREQUENCY
45 40 RETURN LOSS (dB) 35 30 25 20 15 10 5 Zo = 75
MAX2130 toc20
20 Zo = 75 15 RETURN LOSS (dB)
50
10
5
0 0 200 400 600 800 1000 FREQUENCY (MHz)
0 0 200 400 600 800 1000 FREQUENCY (MHz)
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Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications MAX2130
Pin Description
PIN 1 2 3 4, 6, 7, EP 5 8 NAME VCC IN BIAS GND OUT2 OUT1 FUNCTION Supply Voltage Input. Bypass with a 1000pF capacitor in parallel with a 47pF capacitor as close to the pin as possible. (See Typical Application Circuit.) Broadband Input to Low-Noise Amplifier and Loop-Out Amplifier. Internally matched to 75. Requires 0.1F DC-blocking capacitor. (See Typical Application Circuit.) Bias-Setting Resistor Connection. Connect a resistor, RBIAS, from BIAS to GND to set the linearity and supply current of the LNA and the loop-out amplifier. Ground. Connect to ground plane with a low-inductance connection. Solder exposed paddle evenly to the board groundplane. Output of Loop-Out Amplifier. Requires a 0.1F DC-blocking capacitor. (See Typical Application Circuit.) Open-Collector Output of Low-Noise Amplifier. Requires a pullup inductor to VCC, as well as a 0.1F DC-blocking capacitor. (See Typical Application Circuit.)
Detailed Description
The MAX2130 is a broadband, high-gain, low-distortion low-noise amplifier (LNA) with two outputs intended for operation over the 44MHz to 878MHz frequency range. The device operates from a +5V supply and features externally adjustable bias control circuitry that allows minimum linearity requirements to be met while reducing current consumption.
resistor value to improve linearity at the cost of increased supply current. Increase the resistor value to decrease supply current and degrade linearity. Use resistor values greater than 10k. Gain is not significantly affected by the RBIAS value.
Applications Information
Inductor Selection
The OUT1 port of the LNA requires a pull-up inductor to VCC for proper biasing. The exact value of the inductor is not important as long as it has broadband impedance >150 (<500) at 10MHz across the 44MHz to 878MHz frequency band. Table 1 is a list of recommended inductors.
Input
The IN port is a broadband 75 input that provides a guaranteed minimum input return loss of 7.4dB (allowing for 2:1 VSWR at output) across the 44MHz to 878MHz frequency range. AC-couple the IN port with a 0.1F DC-blocking capacitor.
Outputs
The OUT1 port is a broadband, 75, open-collector output for the LNA. It requires a pullup inductor to VCC for proper biasing, as well as a 0.1F DC-blocking capacitor. See the Applications Information section for proper inductor selection. The OUT2 port is a broadband, 75 output for the loopout amplifier. The loop-out amplifier is internally biased and does not require a pullup inductor. AC-couple the OUT2 port with a 0.1F DC-blocking capacitor.
Table 1. OUT1 Pullup Inductor Recommended Components
PART NUMBER BLM11A221S BLM11A471SG BLM10A221SG BLM21A331SG MANUFACTURER Murata Murata Murata Murata
Bias Circuitry
The linearity and supply current for both amplifiers are externally programmable with a single resistor, RBIAS, from BIAS to GND. A nominal resistor value of 15k sets an input IP3 of +17.5dBm, an input IP2 of +27dBm, and a supply current of 93mA. Decrease the
6 _______________________________________________________________________________________
Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications
Dynamic Linearity Adjustment
The LNA and loop-out amplifier linearity can be dynamically adjusted by varying the amount of current sourced by the BIAS port. The BIAS port is internally biased to 1.2V. A resistor, RBIAS, connected from BIAS to ground sets the bias current. An additional resistor, RADJ, placed from the BIAS port to an external voltage source, such as a digital-to-analog converter (DAC), varies the current sourced by the BIAS port. Choosing RADJ = RBIAS = 20k and varying the voltage of the DAC from ground to 2.4V effectively varies the resistance seen from the BIAS port from 10k to an open circuit. See Typical Application Circuit. The DAC output voltage, VADJ, required to set an equivalent resistance to ground, REQ, seen by the BIAS port, can be calculated with the following equation: VADJ = 2.4V - (RBIAS VBIAS) / REQ where RADJ = RBIAS, VBIAS = 1.2V, REQ 10k.
MAX2130
Power-Supply Bypassing
Proper voltage-supply bypassing is essential for highfrequency circuit stability. Bypass the VCC pin with a 1000pF capacitor in parallel with a 47pF capacitor, located as close to the VCC pin as possible. Refer to the MAX2130 EV kit for additional information.
Pin Configuration
TOP VIEW
Chip Information
TRANSISTOR COUNT: 167
VCC 1 IN BIAS 2
8 7
OUT1 GND GND OUT2
MAX2130
3 6 5 GND 4
MAX-EP
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7
Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications MAX2130
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.)
8L, MAX, EXP PAD.EPS
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.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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