The AD829 is a low noise (1.7 nV/√Hz), high speed op amp with custom compensation that provides the user with gains of 1 to 20 while maintaining a bandwidth >50 MHz. Its 0.04° differential phase and 0.02% differential gain performance at 3.58 MHz and 4.43 MHz, driving reverse-terminated 50 Ω or 75 Ω cables, makes it ideally suited for professional video applications. The AD829 achieves its 230 V/μs uncompensated slew rate and 750 MHz gain bandwidth while requiring only 5 mA of current from power supplies.
The external compensation pin of the AD829 gives it exceptional versatility. For example, compensation can be selected to optimize the bandwidth for a given load and power supply voltage. As a gain-of-2 line driver, the −3 dB bandwidth can be increased to 95 MHz at the expense of 1 dB of peaking. Its output can also be clamped at its external compensation pin. The AD829 exhibits excellent dc performance. It offers a minimum open-loop gain of 30 V/mV into loads as low as 500 Ω, a low input voltage noise of 1.7 nV/√Hz, and a low input offset voltage of 1 mV maximum. Common-mode rejection and power supply rejection ratios are both 120 dB.
This op amp is also useful in multichannel, high speed data conversion where its fast (90 ns to 0.1%) settling time is important. In such applications, the AD829 serves as an input buffer for 8-bit to 10-bit ADCs and as an output I/V converter for high speed DACs.
Operating as a traditional voltage feedback amplifier, the AD829 provides many of the advantages that a transimpedance amplifier offer. A bandwidth >50 MHz can be maintained for a range of gains through the replacement of the external compensation capacitor. The AD829 and the transimpedance amplifier are both unity-gain stable and provide similar voltage noise performance (1.7 nV/√Hz); however, the current noise of the AD829 (1.5 pA/√Hz) is less than 10% of the noise of transimpedance amplifiers. The inputs of the AD829 are symmetrical.
Features and Benefits120 MHz bandwidth, gain = −1 230 V/μs slew rate 90 ns settling time to 0.1% 0.02% differential gain 0.04° differential phase 1.7 nV/√Hz input voltage noise 1.5 pA/√Hz input current noise 1 mV maximum input offset voltage (over temperature) 0.3 μV/°C input offset drift Specified for ±5 V to ±15 V operation ±3 V output swing into a 150 Ω load External compensation for gains 1 to 20 5 mA supply current | Amplifiers
Audio & Video ProductsApplication SpecificAD829 SPICE Macro-Model |
| Document | note |
| AD829: High Speed, Low Noise Video Op Amp Data Sheet (Rev. I) | PDF 278 kB |
| AD829: Military Data Sheet |
| Document | note |
| UG-135: Evaluation Board for Single, High Speed Operational Amplifiers (8-Lead SOIC and Exposed Paddle) | PDF 261 kB |
| Document | note |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| 5962-9312901M2A Production | 20 ld LCC | OTH 54 | -55 to 125C | 109.35 | 98.86 | N |
| 5962-9312901MPA Production | 8 ld CerDIP | OTH 48 | -55 to 125C | 26.17 | 23.65 | N |
| AD829AQ Production | 8 ld CerDIP | OTH 48 | -40 to 125C | 5.99 | 5.42 | N |
| AD829AR Production | 8 ld SOIC | OTH 98 | -40 to 125C | 3.38 | 3.06 | N |
| AD829AR-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 125C | 3.38 | 3.06 | N |
| AD829ARZ Production | 8 ld SOIC | OTH 98 | -40 to 125C | 3.08 | 2.78 | Y |
| AD829ARZ-REEL Production | 8 ld SOIC | REEL 2500 | -40 to 125C | 0 | 2.78 | Y |
| AD829ARZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 125C | 0 | 2.78 | Y |
| AD829JCHIPS Production | CHIPS OR DIE | REEL 225 | 25C | 0 | 5.64 | Y |
| AD829JN Production | 8 ld PDIP | OTH 50 | 0 to 70C | 4.37 | 3.95 | N |
| AD829JNZ Production | 8 ld PDIP | OTH 50 | 0 to 70C | 3.98 | 3.6 | Y |
| AD829JR-REEL7 Production | 8 ld SOIC | REEL 750 | 0 to 70C | 0 | 3.59 | N |
| AD829JRZ Production | 8 ld SOIC | OTH 98 | 0 to 70C | 3.62 | 3.27 | Y |
| AD829JRZ-REEL Production | 8 ld SOIC | REEL 2500 | 0 to 70C | 0 | 3.27 | Y |
| AD829JRZ-REEL7 Production | 8 ld SOIC | REEL 750 | 0 to 70C | 0 | 3.27 | Y |
| AD829SCHIPS Production | CHIPS OR DIE | REEL 225 | 25C | 20.02 | 18.2 | Y |
| AD829SE/883B Production | 20 ld LCC | OTH 54 | -55 to 125C | 109.35 | 98.86 | N |
| AD829SQ Production | 8 ld CerDIP | OTH 48 | -55 to 125C | 18 | 16.26 | N |
| AD829SQ/883B Production | 8 ld CerDIP | OTH 48 | -55 to 125C | 26.17 | 23.65 | N |
| 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 |
