AD522: 仪表放大器
The AD522 is a precision IC instrumentation amplifier designed for data acquisition applications requiring high accuracy under worst-case operating conditions. An outstanding combination of high linearity, high common mode rejection, low voltage drift, and low noise makes the AD522 suitable for use in many 12-bit data acquisition systems.
An instrumentation amplifier is usually employed as a bridge amplifier for resistance transducers (thermistors, strain gages, etc.) found in process control, instrumentation, data processing, and medical testing. The operating environment is frequently characterized by low signal-to-noise levels, fluctuating temperatures , unbalanced input impedances, and remote location which hinders recalibration.
AD522 特点
- Low Drift: 2.0uV/° C (AD522B)
- Low Nonlinearity: 0.005% (G = 100)
- High CMRR: >110dB (G = 1000)
- Low Noise: 1.5uV p-p (0.1 to 100Hz)
- Low Initial VOS: 100uV (AD522B)
- Single-Resistor Gain Programmable: 1≤G≤1000
- Output Reference and Sense Terminals
- Data Guard for Improving ac CMR
- Internally Compensated
- No External Components except Gain Resistor
- Active Trimmed Offset, Gain, and CMR
AD522 功能框图
AD522 功能框图
AD522 技术指标
| Single/Dual Supply | Dual | Vnoise RTI 1-10 Hz uVp-p | 4uV p-p |
| Voltage Supply (Vmax) | ±18V | Temperature Range | -55 to +125 |
| Gain Setting Method | Resistor | Gain Error (%) max | +0.05% |
| Gain Range (min to max) | 1000 | Supply Current | 10mA |
| Bandwidth G=10 (kHz typ) | 3kHz | Package | DH-14B |
| CMRR (dB) | 90dB | Vosi (uV) | 100uV |
AD522 订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD522BD | 量产 | 14 lead CerDip (bottom Brazed) | 14 | 工业 |
| AD522SD/883B | 量产 | 14 lead CerDip (bottom Brazed) | 14 | 军用 |
AD522 应用技术支持与电子电路设计开发资源下载
- 差分放大器系列AD522 数据手册DataSheet 下载 . PDF
- ADI 模拟器件公司比较器产品选型指南 . PDF
- 仪表放大器设计者指南(第三版) . PDF
- Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF