The AD9631/AD9632 are very high speed and wide bandwidth amplifiers. The AD9631 is unity gain stable. The AD9632 is stable at gains of 2 or greater. Using a voltage feedback architecture, the exceptional settling time, bandwidth, and low distortion of the AD9631/AD9632 meet the requirements of many applications that previously depended on current feedback amplifiers. Its classical op amp structure works much more predictably in many designs.
A proprietary design architecture has produced an amplifier that combines many of the best characteristics of both current feedback and voltage feedback amplifiers. The AD9631/AD9632 exhibit exceptionally fast and accurate pulse response (16 ns to 0.01%) as well as extremely wide small signal and large signal bandwidth and ultralow distortion. The AD9631 achieves −72 dBc at 20 MHz, 320 MHz small signal bandwidth, and 175 MHz large signal bandwidths.
These characteristics position the AD9631/AD9632 ideally for driving flash as well as high resolution ADCs. Additionally, the balanced high impedance inputs of the voltage feedback architecture allow maximum flexibility when designing active filters.
The AD9631/AD9632 are offered in the industrial (−40°C to +85°C) temperature range. They are available in PDIP and SOIC.
Features and BenefitsAD9631, G = +1 Small signal 320 MHz Large signal (4 V p-p) 175 MHz −113 dBc Typ @ 1 MHz −95 dBc Typ @ 5 MHz −72 dBc Typ @ 20 MHz 46 dBm Third Order Intercept @ 25 MHz 7.0 nV/√Hz Spectral Noise Density Slew Rate 1300 V/µs Settling 16 ns to 0.01%, 2 V Step ±3 V to ±5 V Supply Operation 17 mA Supply Current | Amplifiers
Audio & Video ProductsSPICE Models |
| Document | note |
| AD9631/AD9632: Ultralow Distortion, Wide Bandwidth Voltage Feedback Op Amps Data Sheet (Rev. D) | PDF 692 kB |
| Document | note |
| UG-755: 8-Lead SOIC Amplifier Evaluation Board User Guide | PDF 276 K |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD9631ACHIPS Production | CHIPS OR DIE | REEL 210 | 25C | 0 | 5.33 | Y |
| AD9631ANZ Production | 8 ld PDIP | OTH 50 | -40 to 85C | 6.17 | 5.25 | Y |
| AD9631AR-REEL7 Production | 8 ld SOIC | REEL 750 | -40 to 85C | 0 | 5.23 | N |
| AD9631ARZ Production | 8 ld SOIC | OTH 98 | -40 to 85C | 5.61 | 4.77 | Y |
| AD9631ARZ-REEL Production | 8 ld SOIC | REEL 2500 | -40 to 85C | 0 | 4.77 | Y |
| AD9631ARZ-REEL7 Production | 8 ld SOIC | REEL 750 | -40 to 85C | 0 | 4.77 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| EVAL-HSOPAMP-1CPZ | Evaluation Board for 8-LD LFCSP | 18.25 | Y |
| EVAL-HSOPAMP-1KSZ | Evaluation Bare Board for 5 and 6-lead SC70 Package | 18.25 | Y |
| EVAL-HSOPAMP-1RJZ | Evaluation Bare Board for SOT-23 Package | 18.25 | Y |
| EVAL-HSOPAMP-1RZ | Evaluation Bare Board for 8-lead SOIC Package | 18.25 | Y |
| EVAL-HSOPAMP-E-1RZ | Evaluation Bare Board for 8 Lead SOIC dedicated feedback with epad connection | 18.25 | Y |
| EVAL-HSOPAMP-N-1RZ | Evaluation Bare Board for 8 Lead SOIC w/Null or Compensation functionality on Pins 1 and or 8 | 18.25 | Y |
