AD8334:  Quad VGA with Ultralow Noise Preamplifier and Programmable RIN

The AD8334 is an ultralow noise, quad channel linear-in-dB variable gain amplifier (VGA). Although optimized for ultrasound systems, it may be used as a low noise variable gain control in any ...More

Technical Article: Complete Analog Front End (AFE) for Advanced Ultrasound Equipment

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AD8334:  Quad VGA with Ultralow Noise Preamplifier and Programmable RIN

Product Description

The AD8334 is an ultralow noise, quad channel linear-in-dB variable gain amplifier (VGA). Although optimized for ultrasound systems, it may be used as a low noise variable gain control in any application whose operating frequency is less than 100 MHz.

The AD8334 is a quad version of the single AD8331 and dual AD8332.

For more information on specs, please see the AD8332 datasheet.


Applications
  • Ultrasound and Sonar
  • High Performance AGC Systems
  • Low IF Signal Processing
  • High Speed ADC Driver

    • Features

    • Ultralow Input Noise at Maximum Gain
    • Active Termination Match, Selected with an External Resistor
    • Ultra Low Noise LNA Pre-amp
    • Bandwidth: 100 MHz (-3 dB)
    • Wide Gain Range with Programmable
      Post-amp
    • Fully Differential Signal Path after LNA
    • Selectable Output Clamping Level
    • Trimmed for Gain, Offset and Clamping Level
    • Optimized for 10-/12-Bit ADCs
    • Single +5 V Supply

    Diagrams

    AD8334 Diagram
    Functional Block Diagram for AD8334

    Specifications

    Supply Voltage (V) +5V
    Gain Low End (dB) +4.5dB
    Gain High End (dB) +43.5dB
    -3 dB BW (MHz) 100MHz
    Spectral Noise (nV/rtHz) 0.74nV/rtHz
    Gain Accuracy (dB) +0.5dB
    Supply Current 116mA
    Package 64-Lead LFCSP

    Explore Other Products

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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 $4.40
    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 32mA - 2 8-Lead SOIC/8-Lead uSOIC $2.52
    AD8351 Analog 2200 0 +26 - 2.7 +5 32mA - 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 700 +25 +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 690 -4 +20 1 - +5 130mA ±0.2 19 24-Lead LFCSP $4.54
    AD8376 Digital 690 -4 +20 2 - +5 260mA ±0.2 19 32-Lead CSP $6.57
    ADL5330 Analog 3000 -34 +22 1 - +5 240mA - 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 - - - -0.02 - 40-Lead LFCSP -

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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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