AD797: Ultralow Distortion, Ultralow Noise Op Amp
The AD797 is a very low noise, low distortion operational amplifier ideal for use as a preamplifier. The low noise of 0.9 nV(root)Hz and low total harmonic distortion of -120 dB at audio bandwidths give the AD797 the wide dynamic range necessary for preamps in microphones and mixing consoles.
Furthermore, the AD797's excellent slew rate of 20 V/us and 110 MHz gain bandwidth make it highly suitable for low frequency ultrasound applications.
The AD797 is also useful in IR and Sonar Imaging applications where the widest dynamic range is necessary. The low distortion and 16-bit settling time of the AD797 make it ideal for buffering the inputs to Sigma Delta ADCs or the outputs of high resolution DACs especially when they are used in critical applications such as seismic detection and spectrum analyzers. Key features such as a 50 mA output current drive and the specified power supply voltage range of ±5 to ±15 volts make the AD797 an excellent general purpose amplifier.
产品应用领域 Applications
- Professional audio preamplifiers
- IR, CCD, and sonar imaging systems
- Spectrum analyzers
- Ultrasound preamplifiers
- Seismic detectors
- Σ-Δ ADC/DAC buffers
AD797 特点
- Low Noise:
0.9 nV/vHz typ (1.2 nV/vHz max) Input Voltage Noise at 1 kHz 50 nV p-p Input Voltage Noise, 0.1 Hz to 10 Hz - Low Distortion:
-120 dB Total Harmonic Distortion at 20 kHz - Excellent DC Precision 80 uV max Input Offset Voltage 1.0 uV/°C VOS Drift
- High Output Drive Current of 50 mA
- Excellent AC Characteristics
800 ns Settling Time to 16 Bits
(10 V Step)
110 MHz Gain Bandwidth (G = 1000)
8 MHz Bandwidth (G = 10)
280 kHz Full Power Bandwidth at
20 V p-p
20 V/us Slew Rate - Specified for ±5 V and ±15 V Power Supplies
实验室电路
Find more at our Circuits Library
Using the AD7328 8-Channel ADC in Single Ended Applications
本电路中采用的产品:
AD7328, AD780, AD797, AD8620
电路类型: ADC电路/驱动器
应用: 仪器仪表; 过程控制
优化目标: 高性能
AD797 功能框图
AD797 技术指标
| -3dB Bandwidth | 8MHz | Vcc-Vee Supply (V) | 10 to 36 |
| Slew Rate | 20V/us | Iq per Amplifier | 10.5mA |
| Vos | 25uV | # OpAmps per Pkg | 1 |
| Ib | 250nA | Operating Temp Range | -40 to +85 |
| Input Noise (nV/rtHz) | 900pV/rtHz | Packages | DIP,SOIC |
AD797 订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD797AN | 量产 | 8 ld PDIP | 8 | 工业 |
| AD797ANZ | 量产 | 8 ld PDIP | 8 | 工业 |
| AD797AR | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797AR-REEL | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797AR-REEL7 | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797ARZ | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797ARZ-REEL | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797ARZ-REEL7 | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797BR | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797BR-REEL | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797BR-REEL7 | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797BRZ | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797BRZ-REEL | 量产 | 8 ld SOIC | 8 | 工业 |
| AD797BRZ-REEL7 | 量产 | 8 ld SOIC | 8 | 工业 |
EVAL-PRAOPAMP: Universal Precision Op Amp Evaluation Board
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| EVAL-PRAOPAMP-1KSZ | 量产 | 评估板 | 商业 | |
| EVAL-PRAOPAMP-1RJZ | 量产 | 评估板 | 商业 | |
| EVAL-PRAOPAMP-1RMZ | 量产 | 评估板 | 商业 | |
| EVAL-PRAOPAMP-1RZ | 量产 | 评估板 | 商业 | |
| EVAL-PRAOPAMP-2RMZ | 量产 | 评估板 | 商业 | |
| EVAL-PRAOPAMP-2RZ | 量产 | 评估板 | 商业 | |
| EVAL-PRAOPAMP-4RUZ | 量产 | 评估板 | 商业 | |
| EVAL-PRAOPAMP-4RZ | 量产 | 评估板 | 商业 |