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AD8336:  General-Purpose, −55°C to +125°C, Wide Bandwidth, DC-Coupled VGA

The AD8336 is a low noise, single-ended, linear-in-dB, general-purpose variable gain amplifier, usable over a large range of supply voltages. It features an uncommitted preamplifier (preamp) with a usable gain range of 6 dB to 26 dB established by external resistors in the classical manner. The VGA gain range is 0 dB to 60 dB, and its absolute gain limits are −26 dB to +34 dB. When the ...More

AD8336:  General-Purpose, −55°C to +125°C, Wide Bandwidth, DC-Coupled VGA

Product Description

The AD8336 is a low noise, single-ended, linear-in-dB, general-purpose variable gain amplifier, usable over a large range of supply voltages. It features an uncommitted preamplifier (preamp) with a usable gain range of 6 dB to 26 dB established by external resistors in the classical manner. The VGA gain range is 0 dB to 60 dB, and its absolute gain limits are −26 dB to +34 dB. When the preamplifier gain is adjusted for 12 dB, the combined 3 dB bandwidth of the preamp and VGA is 100 MHz, and the amplifier is fully usable to 80 MHz. With ±5 V supplies, the maximum output swing is 7 V p-p.

Thanks to its X-Amp® architecture, excellent bandwidth uniformity is maintained across the entire gain range of the VGA. Intended for a broad spectrum of applications, the differential gain control interface provides precise linear-in-dB gain scaling of 50 dB/V over the temperature span of −55°C to +125 °C. The differential gain control is easy to interface with a variety of external circuits within the common-mode voltage limits of the AD8336.

The large supply voltage range makes the AD8336 particularly suited for industrial medical applications and for video circuits. Dual-supply operation enables bipolar input signals, such as those generated by photodiodes or photomultiplier tubes.

The fully independent voltage feedback preamp allows both inverting and noninverting gain topologies, making it a fully bipolar VGA. The AD8336 can be used within the specified gain range of −14 dB to +60 dB by selecting a preamp gain between 6 dB and 26 dB and choosing appropriate feedback resistors. For the nominal preamp gain of 4×, the overall gain range is −14 dB to +46 dB.

In critical applications, the quiescent power can be reduced by about half by using the power adjust pin, PWRA. This is especially useful when operating with high supply voltages of up to ±12 V, or at high temperatures.

The operating temperature range is −55°C to +125°C. The AD8336 is available in a 16-lead LFCSP (4 mm × 4 mm).

Applications

  • Industrial process controls
  • High performance AGC systems
  • I/Q signal processing
  • Video
  • Industrial and medical ultrasound
  • Radar receivers

RESOURCES & TOOLS

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  • Low noise
    Voltage noise = 3 nV/√Hz
    Current noise = 3 pA/√Hz
  • Small signal BW: 115 MHz
  • Large signal BW: 2 V p-p = 80 MHz
  • Slew rate: 550 V/μs, 2 V p-p
  • Gain ranges (specified)
    −14 dB to +46 dB, 0 dB to 60 dB
  • Gain scaling: 50 dB/V
  • DC coupled
  • Temperature Range: −55°C to +125°C Power
    150 mW @ ±3 V, −55°C < T < +125°C
    84 mW @ ±3 V, PWRA = 3 V
  • Supply Voltage (V): ±12V
  • Gain Low End (dB): -14dB
  • Gain High End (dB): +46dB
  • -3 dB BW (MHz): 115MHz
  • Spectral Noise (nV/rtHz): 3nV/rtHz
  • Gain Accuracy (dB): ±0.5dB
  • Supply Current : 25mA
  • Package: 16-Lead LFCSP

Functional Block Diagram for AD8336

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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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*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.