Variable Gain Amplifiers (VGA)
Variable gain amplifiers (VGAs) are used in a variety of remote sensing and communications equipment. Variable gain amplifiers deliver unmatched performance for signal chains that require high dynamic range. Applications ranging from ultrasound, radar, LIDAR, wireless communications, and speech analysis have utilized VGAs to deliver industry leading performance.
Subcategories
Product Selection Table
Latest Resources
Application Notes
- AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (Rev. 0) PDF
- AN-669: Effectively Applying the AD628 Precision Gain Block (Rev. 0) PDF
- AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B) PDF
- Designing with the AD8338 (Rev. AN-1192) PDF
- AN-934: 60 dB Wide Dynamic Range, Low Frequency AGC Circuit Using a Single VGA (Rev. 0) PDF
- AN-808: Multicarrier CDMA2000 Feasibility (Rev. 0) PDF
- AN-826: A 2.4 GHz WiMAX Direct Conversion Transmitter (Rev. B) PDF
Technical Articles
Product Selection Guide
User Guides
Evaluation Documentation
- ADA4961 Gerber Files ZIP
- ADRF6518 Gerber Files ZIP
- ADL5592 Gerber Files ZIP
- ADL5571 Gerber Files ZIP
- ADL5570 Gerber Files ZIP
- ADL5562 Gerber Files ZIP
- ADL5561 Gerber Files ZIP
- ADRF6510 Gerber Files ZIP
- ADL5391 Gerber Files ZIP
- AD8372 Gerber Files ZIP
- ADL5542 Gerber Files ZIP
- ADL5541 Gerber Files ZIP
- ADL5534 Gerber Files ZIP
- ADL5531 Gerber Files ZIP
- ADL5523 Gerber Files ZIP
- ADL5521 Gerber Files ZIP
- ADL5390 Gerber Files ZIP
- ADL5331 Gerber Files ZIP
- ADL5330 Gerber Files ZIP
- ADL5323 Gerber Files ZIP
- ADL5322 Gerber Files ZIP
- ADL5321 Gerber Files ZIP
- ADL5243 Gerber Files ZIP
- ADL5240 Gerber Files ZIP
- ADL5202 Gerber Files ZIP
- ADL5201 Gerber Files ZIP
- AD8376 Gerber Files ZIP
- AD8375 Gerber Files ZIP
- AD8370 Gerber Files ZIP
- AD8369 Gerber Files ZIP
- AD8368 Gerber Files ZIP
- AD8367 Gerber Files ZIP
- AD8366 Gerber Files ZIP
- AD8352 Gerber Files ZIP
- AD8351 Gerber Files ZIP
- AD8350-AR20 Gerber Files ZIP
- AD8350-AR15 Gerber Files ZIP
- AD8331 Evaluation Tools (AD8331-EVAL) PDF
- AD8330 Evaluation Tools (EVAL-AD8330EB) PDF
- AD8332/AD9238 Evaluation Tools PDF
- AD8332-EVALZ: Dual VGA, Ultralow Noise Preamplifier, and Programmable RIN Evaluation Board Data Sheet (Rev. D) PDF
Circuit Notes
Technical Books
Design Tools
Solutions Bulletins & Brochures
Webcast
- Explaining Phase Noise
- Solutions for Fitting High Performance RF Signal Chains into Small Spaces
- Fundamentals of Frequency Synthesis, Part 1: Phased Locked Loops
- Solving the Elusive Baseband to Antenna Problem using RFDAC Technology
- Developing Multiple-Input Multiple-Output (MIMO) Systems with the AD9361
Videos
Tutorials
Frequently Asked Questions
- Design FAQs - Variable Gain Amplifiers PDF
- How does the input bias current of an amplifier affect my circuit?
- How does the input offset voltage (VOS) of an amplifier affect my circuit?
- What is input voltage range and how is it determined?
- Why is my amplifier oscillating?
- My reference voltage changes when I connect it to the amplifier's input?
- What does single-supply amplifer really mean?
- How does input current noise affect my amplifier circuit?
- What is the full power bandwidth of an amplifier?
- Why can't I get my amplifier to go to my full-scale output voltage?
- What is a rail-to-rail amplifier?
- What is meant by the noise gain of an amplifier?
- What are Variable Gain Amplifiers (VGA's) and how are they used?
- What is the output headroom or voltage range of an amplifier and how is it determined?
- I'm applying a dc voltage to the input of my amplifier, but I'm getting an oscillating signal out. What can be causing this?
- What is the small signal bandwidth of an amplifier?
- How does the open-loop gain of an amplifier affect my circuit?
- Why does the output signal of my amplifier look like a triangle, when I have a sine wave input?
- What is unity-gain bandwidth?
- What is amplifier RF rectification?
- Why is my output signal clipping?
- I have a large unexplained offset in my circuit. What can be causing it?
- Why is my input signal clipping?
- How does the input voltage noise of an amplifier affect my circuit?
- What is input common-mode voltage range (CMVR)?
- What are op amp input and output common-mode and differential voltage ranges and how are they determined?
- Why doesn't my amplifier output go to zero when I ground the input?
- Can I exceed the parameters specified in the absolute maximum ratings table?
Variable Gain Amplifiers (VGA)
| SortOrder | Part# | # of Channels | Amp Architecture | Gain Set | Gain (min) (dB) | Gain (max) (dB) | Freq Response (min) (Hz) | Freq Response (max) (Hz) | NF (typ) (dB) | Is (typ) (A) | Vs span (min) (V) | Vs span (max) (V) | Price (100-499) ($ US) | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ADL5335 | 1 | Driver, VGA | Digital | -8 | 12 | 700M | 4.2G | 5.4 | 125m | 4.75 | 5.25 | $11.30 (ADL5335ACPZN) | $8.30 (ADL5335ACPZN) |
| 2 | ADRF6520 | 2 | Filter, VGA | Analog | -7 | 53 | 36M | 720M | 10.5 | 425m | 3.15 | 3.45 | $20.66 (ADRF6520ACPZ) | $15.89 (ADRF6520ACPZ) |
| 3 | HMC625B | 1 | VGA | Digital | -13.5 | 18 | 0 | 5G | 6 | 87.5m | 4.75 | 5.25 | $11.99 (HMC625BLP5E) | - |
| 4 | ADL5205 | 2 | VGA | Digital | -9 | 26 | 0 | 1.7G | 6.6 | 175m | 3.15 | 5.25 | - | - |
| 5 | HMC8121 | 1 | VGA | Digital | 5 | 22 | 81G | 86G | - | 265m | -5 | 4 | $55.21 (HMC8121) | - |
| 6 | HMC8120 | 1 | VGA | Digital | 7 | 22 | 71G | 76G | - | 250m | -5 | 4 | $55.21 (HMC8120) | - |
| 7 | ADA8282 | 4 | LNA, PGA | Digital | 18 | 36 | 5M | 42.3M | - | 19.6m | 3 | 3.6 | $3.47 (ADA8282WBCPZ) | $3.12 (ADA8282WBCPZ) |
| 8 | ADA4961 | 1 | ADC Driver, VGA | Digital, Pin Strap | -6 | 15 | 10M | 3.2G | 5.6 | 150m | 3.3 | 5.5 | - | $11.99 (ADA4961ACPZN-R7) |
| 9 | ADL5246 | 1 | LNA, VGA | Analog | -13.5 | 31.5 | 600M | 3G | 1.8 | 270m | 3.135 | 5.25 | - | $7.50 (ADL5246ACPZN-R7) |
| 10 | ADRF6518 | 2 | Filter, VGA | Analog | -36 | -66 | 1M | 63M | 16 | 360m | 3.15 | 3.45 | $13.00 (ADRF6518ACPZ-WP) | $11.95 (ADRF6518ACPZ-R7) |
| 11 | AD8338 | 1 | VGA | Analog | 0 | 80 | 0 | 18M | - | 3m | 3 | 5 | - | $4.81 (AD8338ACPZ-R7) |
| 12 | HMC1023 | 1 | Filter, PGA | Digital | 0 | 10 | 5M | 72M | 10 | 240m | 4.75 | 5.25 | $18.06 (HMC1023LP5E) | - |
| 13 | HMC742A | 1 | VGA | Digital | -19.5 | 12 | 70M | 4G | 4 | 150m | 5 | 5.5 | $10.71 (HMC742ALP5E) | - |
| 14 | HMC681A | 1 | VGA | Digital | 13.5 | 45 | 50M | 1G | 2.7 | 176m | 5 | 5.5 | - | - |
| 15 | HMC627A | 1 | VGA | Digital | -11.5 | 20 | 50M | 1G | 4.3 | 90m | 5 | 5.5 | - | - |
| 16 | HMC6187 | 1 | VGA | Analog | 6 | 19 | 27G | 31.5G | 4.5 | 230m | -5 | 4 | - | - |
| 17 | ADL5202 | 2 | VGA | Digital | -11.5 | 20 | 10M | 700M | 7.5 | 210m | 4.5 | 5.5 | - | - |
| 18 | ADL5201 | 1 | VGA | Digital | -11.5 | 20 | 10M | 700M | 7.5 | 110m | 4.5 | 5.5 | - | - |
| 19 | ADL5243 | 1 | VGA | Digital | -1.2 | 31.3 | 100M | 4G | 3.1 | 175.5m | 4.75 | 5.25 | - | $5.79 (ADL5243ACPZ-R7) |
| 20 | ADL5240 | 1 | VGA | Digital | -12.6 | 18.2 | 100M | 4G | 4.9 | 93m | 4.75 | 5.25 | - | $3.50 (ADL5240ACPZ-R7) |
| 21 | ADL5336 | 2 | VGA | Digital | -25.4 | 34.7 | 10M | 1G | 7.1 | 80m | 4.5 | 5.5 | - | - |
| 22 | HMC997 | 1 | VGA | Analog | 5.5 | 20.5 | 17G | 27G | 3.5 | 170m | 5 | 5 | $21.60 (HMC997LC4) | - |
| 23 | HMC996 | 1 | VGA | Analog | -3.5 | 18.5 | 5G | 12G | 2 | 120m | 5 | 5.5 | $13.84 (HMC996LP4E) | - |
| 24 | HMC960 | 2 | VGA | Digital | 0 | 40 | 0 | 100M | 6 | 70m | 4.5 | 5.5 | $10.56 (HMC960LP4E) | - |
| 25 | ADRF6516 | 2 | Filter, VGA | Analog | -5 | 45 | 1M | 31M | 25 | 360m | 3.15 | 3.45 | $11.30 (ADRF6516ACPZ-R7) | $10.30 (ADRF6516ACPZ-R7) |
| 26 | ADRF6510 | 2 | Filter, VGA | Analog | -5 | 45 | 1M | 30M | 28 | 258m | 4.75 | 5.25 | - | $8.99 (ADRF6510ACPZ-R7) |
| 27 | HMC900 | 1 | Filter, PGA | Digital | 0 | 10 | 3.5M | 50M | 12 | 130m | 4.75 | 5.25 | $18.06 (HMC900LP5E) | - |
| 28 | HMC680 | 1 | VGA | Digital | -4 | 19 | 30M | 400M | 5 | 250m | - | 5.6 | $7.64 (HMC680LP4E) | - |
| 29 | AD8432 | 2 | VGA | Digital, Pin Strap | 12 | 24 | 100k | 200M | 2.3 | 24m | 4.5 | 5.5 | $1.60 (AD8432ACPZ-R7) | $1.29 (AD8432ACPZ-R7) |
| 30 | LTC6412 | 1 | VGA | Analog | -14 | 17 | - | 800M | 10 | 110m | 3 | 3.6 | $5.63 (LTC6412CUF#PBF) | $4.69 (LTC6412CUF#PBF) |
| 31 | ADL5331 | 1 | Differential Amp, VGA | Analog | -14 | 17 | 1M | 1.2G | 9 | 240m | 4.75 | 5.25 | - | $5.16 (ADL5331ACPZ-R7) |
| 32 | AD8264 | 4 | VGA | Analog | 0 | 24 | 0 | 235M | - | 99m | 5 | 10 | $14.54 (AD8264ACPZ) | $11.95 (AD8264ACPZ) |
| 33 | LTC6603 | 2 | PGA | Digital, Pin Strap | 0 | 24 | - | 2.5M | - | 88m | 2.7 | 3.6 | $9.10 (LTC6603CUF#PBF) | $7.50 (LTC6603CUF#PBF) |
| 34 | LTC6602 | 2 | Differential Amp | Digital, Pin Strap | 0 | 30 | - | 900k | - | 65m | 2.7 | 3.6 | $8.40 (LTC6602CUF#PBF) | $6.95 (LTC6602CUF#PBF) |
| 35 | LT5554 | 1 | VGA | Digital | 2 | 18 | - | 1G | 10 | 110m | 4.75 | 5.25 | $5.34 (LT5554IUH#PBF) | $4.40 (LT5554IUH#PBF) |
| 36 | AD8260 | - | Receiver | Digital | -6 | 24 | - | - | - | 28m | - | - | $4.67 (AD8260ACPZ-WP) | $3.84 (AD8260ACPZ-R7) |
| 37 | HMC694LP4 | 1 | VGA | Analog | 0 | 23 | 6G | 17G | 6 | 175m | 5 | 5.5 | $29.31 (HMC694LP4E) | - |
| 38 | HMC694-Die | 1 | VGA | Analog | 1 | 24 | 6G | 17G | 5 | 170m | 5 | 5.5 | $22.94 (HMC694) | - |
| 39 | AD8372 | 2 | VGA | Digital | -9 | 32 | 10M | 130M | 7.9 | 212m | 4.5 | 5.5 | $9.11 (AD8372ACPZ-WP) | $6.58 (AD8372ACPZ-R7) |
| 40 | AD8376 | 2 | VGA | Digital | -4 | 20 | 10M | 700M | 8.7 | 250m | 4.5 | 5.5 | $7.55 (AD8376ACPZ-WP) | $6.57 (AD8376ACPZ-R7) |
| 41 | AD8375 | 1 | Differential Amp, VGA | Digital | -4 | 20 | 10M | 630M | 8.3 | 125m | 4.5 | 5.5 | $5.22 (AD8375ACPZ-WP) | $4.54 (AD8375ACPZ-R7) |
| 42 | HMC628 | 1 | VGA | Digital | -8 | 15 | 50M | 800M | 5 | 65m | - | 5.6 | - | - |
| 43 | AD8336 | 1 | VGA | Analog | -14 | 46 | 0 | 115M | - | 25m | 6 | 24 | $5.66 (AD8336ACPZ-WP) | $4.65 (AD8336ACPZ-R7) |
| 44 | AD8368 | 1 | ADC Driver, Differential Amp, VGA | Analog | -12 | 22 | 10M | 800M | 9.5 | 60m | 4.75 | 5.5 | $5.04 (AD8368ACPZ-WP) | $4.60 (AD8368ACPZ-REEL7) |
| 45 | AD8334 | 4 | VGA | Analog | 4.5 | 43.5 | 100k | 100M | - | 116m | 4.5 | 5.5 | $18.17 (AD8334ACPZ) | $14.66 (AD8334ACPZ) |
| 46 | AD8337 | 1 | VGA | Analog | 0 | 24 | 0 | 100M | - | 15m | 4.5 | 10 | $2.99 (AD8337BCPZ-REEL) | $2.49 (AD8337BCPZ-REEL) |
| 47 | ADL5330 | 1 | VGA | Analog | -32 | 21 | 10M | 3G | 9 | 215m | 4.75 | 5.25 | $5.56 (ADL5330ACPZ-R2) | $5.04 (ADL5330ACPZ-REEL7) |
| 48 | LT5524 | 1 | VGA | Digital | 4.5 | 27 | - | 540M | 8.6 | 34m | 4.75 | 5.25 | $5.15 (LT5524EFE#PBF) | $4.40 (LT5524EFE#PBF) |
| 49 | AD8335 | 4 | VGA | Analog | -10 | 38 | 100k | 70M | - | 76m | 4.5 | 5.5 | $14.25 (AD8335ACPZ) | $12.14 (AD8335ACPZ) |
| 50 | LTC6912-2 | 2 | PGA | Digital | 0 | 36 | - | 30M | - | 1.75m | 2.7 | 10.5 | $2.53 (LTC6912CGN-2#PBF) | $2.15 (LTC6912CGN-2#PBF) |
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