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ADL5331:  1 MHz to 1.2 GHz VGA with 30 dB Gain Control Range

The ADL5331 is a high performance, voltage-controlled variable gain amplifier/attenuator for use in applications with frequencies up to 1.2 GHz. The balanced structure of the signal path maximizes signal swing, eliminates common-mode noise and minimizes distortion while it also reduces the risk of spurious feed-forward at low gains and high frequencies caused by parasitic coupling.

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ADL5331:  1 MHz to 1.2 GHz VGA with 30 dB Gain Control Range

Product Description

The ADL5331 is a high performance, voltage-controlled variable gain amplifier/attenuator for use in applications with frequencies up to 1.2 GHz. The balanced structure of the signal path maximizes signal swing, eliminates common-mode noise and minimizes distortion while it also reduces the risk of spurious feed-forward at low gains and high frequencies caused by parasitic coupling.

The 50 Ω differential input system converts the applied differential voltage at INHI and INLO to a pair of differential currents with high linearity and good common-mode rejection. The signal currents are then applied to a proprietary voltage controlled attenuator providing precise definition of the overall gain under the control of the linear-in-dB interface. The GAIN pin accepts a voltage from 0 V at a minimum gain to 1.4 V at a full gain with a 40 mV/dB scaling factor over most of the range.

The output of the high accuracy wideband attenuator is applied to a differential transimpedance output stage. The output stage provides a differential output at OPHI and OPLO, which must be pulled up to the supply with RF chokes or a center-tapped balun.

The ADL5331 consumes 240 mA of current including the output pins and operates off a single supply ranging from 4.75 V to 5.25 V. A power-down function is provided by applying a logic low input on the ENBL pin. The current consumption in power-down mode is 250 μA.

The ADL5331 is fabricated on an Analog Devices, Inc., proprietary high performance, complementary bipolar IC process. The ADL5331 is available in a 24-lead (4 mm × 4 mm), Pb-free LFCSP_VQ package and is specified for operation from ambient temperatures of −40°C to +85°C. An evaluation board is also available.

Applications

  • Transmit and receive power control at RF and IF
  • CATV distribution

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    • Voltage-controlled amplifier/attenuator
    • Operating frequency: 1 MHz to 1.2 GHz
    • Optimized for controlling output power
    • High linearity: OIP3 47 dBm @ 100 MHz
    • Output noise floor: −149 dBm/Hz @ maximum gain
    • Input impedance: 50 Ω
    • Output impedance: 20 Ω
    • Wide gain-control range: 30 dB
    • Linear-in-dB gain control function: 40 mV/dB
    • Single-supply voltage: 4.75 V to 5.25 V
    • Gain Low End (dB): -14dB
    • Gain High End (dB): +17dB
    • -3 dB BW (MHz): 1500MHz
    • Supply Current : 240mA

    Functional Block Diagram for ADL5331

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    类似产品

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    Part# Gain Control -3 dB BW (MHz) Gain Low End (dB) Gain High End (dB) Number of Channels Spectral Noise (nV/rtHz) Supply Voltage (V) Supply Current Gain Accuracy (dB) 1 dB Comp Point (dBm) Package Price* (1000-4999)
    AD600 Analog 35 0 +40 2 1.4 ±5 14mA - - - $16.61
    AD602 Analog 35 -10 +30 2 1.4 ±5 14mA - - - $13.36
    AD603 Analog 90 -11 +31 1 1.4 ±5 20mA ±0.5 - 8-Lead DIP, 8-Lead SOIC $5.47
    AD604 Analog 40 0 +48 2 0.8 ±5 31mA ±0.3 15 24-Lead SOIC, 24-Lead SSOP $16.45
    AD605 Analog 40 -14 +34 2 1.8 +5 23mA ±0.2 15 16-Lead SOIC $9.91
    AD8260 Digital 180 -6 +24 1 2.4 +3.3 28mA +0.25 - - $3.84
    AD8264 Analog 235 0 +24 4 2.3 ±5 99mA +2 - 40-Lead LFCSP $11.95
    AD8320 Digital 150 -10 +26 1 53 +12 105mA ±0.2 22.5 20-Lead SOIC -
    AD8321 Digital 120 -27.4 +26 1 20 +9 90mA ±1 19.5 20-Lead SOIC $4.40
    AD8322 Digital 180 -12.6 +29.5 1 64 +5 113mA ±2 19 28-Lead TSSOP $3.19
    AD8323 Digital 100 -26 +27.5 1 - +5 - - - 28-Lead TSSOP $3.34
    AD8324 Digital 100 -25.5 +33.5 1 157 +3.3 207mA ±1 21 20-Lead LFCSP, 20-Lead QSOP $1.73
    AD8325 Digital 100 -29.5 +30 1 56 +5 133mA ±1 18.5 28-Lead TSSOP $3.34
    AD8326 Digital 100 -26 +27.5 1 100 ±5 157mA ±1 26.5 28-Lead PSOP, 28-Lead TSSOP $3.95
    AD8327 Digital 160 -18 +30 1 64 +5 105mA ±1 18 20-Lead TSSOP $3.80
    AD8328 Digital 107 -27.5 +31.5 1 135 - 120mA ±1 18.4 20-Lead LFCSP, 20-Lead QSOP $1.92
    AD8330 Analog 150 0 +50 1 5 +6 20mA ±0.5 - 16-Lead LFCSP, 16-Lead QSOP $4.44
    AD8331 Analog 120 -4.5 +43 1 0.74 +5 25mA +0.5 7 - $5.45
    AD8332 Analog 120 -4.5 +43.5 2 0.74 +5 58mA +0.5 7 28-Lead TSSOP, 32-Lead CSP $10.57
    AD8334 Analog 100 +4.5 +43.5 4 0.74 +5 116mA +0.5 7 64-Lead LFCSP $14.66
    AD8335 Analog 70 -10 +38 4 1.3 +5 76mA ±0.2 18 64-Lead LFCSP $12.14
    AD8336 Analog 115 -14 +46 1 3 ±12 25mA ±0.5 11 16-Lead LFCSP $4.59
    AD8337 Analog 280 0 +24 1 2.2 ±5 15mA ±0.25 - 8-Lead LFCSP $2.49
    AD8350 Analog 900 +15 +20 - 1.7 +11 28mA - 2 8-Lead SOIC/8-Lead uSOIC $2.52
    AD8351 Analog 2200 0 +26 - 2.7 +5 28mA - 13 10-Lead uSOIC $2.68
    AD8352 Analog 2200 +3 +25 - 2.6 +5.5 37mA - 13 16-Lead LFCSP $3.53
    AD8366 Digital 1000 +4.5 +20.5 - - - 180mA - - 32-Lead CSP -
    AD8367 Analog 500 -2.5 +42.5 1 1.84 +5.5 26mA ±0.2 8.1 14-Lead TSSOP $4.60
    AD8368 Analog 800 -12 +22 1 - +5 - ±0.4 13 24-Lead LFCSP $4.60
    AD8369 Digital 600 -5 +40 1 2 +5.5 37mA ±0.5 0.5 16-Lead TSSOP $4.25
    AD8370 Digital 750 -11 +34 1 2.1 +5.5 78mA - 14 16-Lead TSSOP $4.25
    AD8372 Digital 130 -9 +32 2 - +5 116mA ±0.3 - 32-Lead CSP $6.58
    AD8375 Digital 630 -4 +20 1 - +5 125mA ±0.2 19 24-Lead LFCSP $4.54
    AD8376 Digital 700 -4 +20 2 - +5 250mA ±0.2 19 32-Lead CSP $6.57
    ADL5330 Analog 3000 -34 +22 1 - +5 215mA - 1.2 24-Lead LFCSP $5.04
    ADL5331 Analog 1500 -14 +17 1 - - 240mA - - - -
    ADL5390 Analog 2400 - +7 1 - +5 130mA - 9.6 24-Lead LFCSP $7.59
    ADL5391 Analog 2000 - +9.5 1 26.7 +5 135mA - 15.1 16-Lead LFCSP $4.95
    ADL5561 - 2900 +6 +15.5 - 2.1 - 40mA - - 16-Lead LFCSP $3.68
    ADL5592 Digital 2400 - +30.5 1 - - 189mA -0.02 - 40-Lead LFCSP -
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