AD526: 仪表放大器
The AD526 is a single-ended, monolithic software programmable gain amplifier (SPGA) that provides gains of 1, 2, 4, 8 and 16. It is complete, including amplifier, resistor network and TTL-compatible latched inputs, and requires no external components.
Low gain error and low nonlinearity make the AD526 ideal for precision instrumentation applications requiring programmable gain. The small signal bandwidth is 350 kHz at a gain of 16. In addition, the AD526 provides excellent dc precision. The FET-input stage results in a low bias current of 50 pA. A guaranteed maximum input offset voltage of 0.5 mV max (C grade) and low gain error (0.01%, G = 1, 2, 4, C grade) are accomplished using Analog Devices' laser trimming technology.
To provide flexibility to the system designer, the AD526 can be operated in either latched or transparent mode. The force/sense configuration preserves accuracy when the output is connected to remote or low impedance loads.
The AD526 is offered in one commercial (0°C to +70°C) grade, J, and three industrial grades, A, B and C, which are specified from -40°C to +85°C. The S grade is specified from -55°C to +125°C. The military version is available processed to MIL-STD 883B, Rev C. The J grade is supplied in a 16-pin plastic DIP, and the other grades are offered in a 16-pin hermetic side-brazed ceramic DIP.
AD526 特点
- FeaturesDigitally Programmable Binary Gains from 1 to 16
- Two-Chip Cascade Mode Achieves Binary Gain from 1 to 256
- Gain Error:
0.01% Max, Gain = 1, 2, 4 (C Grade)
0.02% Max, Gain = 8, 16 (C Grade)
0.5 ppm/°C Drift Over Temperature - Low Nonlinearity: ±0.005% FSR Max (J Grade)
- Fast Settling Time
10 V Signal Change:
0.01% in 4.5 us (Gain = 16)
Gain Change:
0.01% in 5.6 us (Gain = 16) - Excellent DC Accuracy:
Offset Voltage: 0.5 mV Max
(C Grade) Offset Voltage Drift:
3 uV/°C(C Grade) - TTL-Compatible Digital Inputs
AD526 功能框图
AD526 功能框图
AD526 技术指标
| Single/Dual Supply | Dual | Vnoise RTI 1-10 Hz uVp-p | 3uV p-p |
| Voltage Supply (Vmax) | ±16.5V | Temperature Range | 40 to +85 |
| Gain Setting Method | Software | Gain Error (%) max | +0.08% |
| Gain Range (min to max) | 16 | Supply Current | 14mA |
| Bandwidth G=10 (kHz typ) | 350kHz | Vosi (uV) | 700uV |
| CMRR (dB) | n/a |
AD526 订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| 5962-9089401MEA | 量产 | 16 ld Side-Brazed CerDIP | 16 | 军用 |
| AD526AD | 量产 | 16 ld Side-Brazed CerDIP | 16 | 工业 |
| AD526ADZ | 量产 | 16 ld Side-Brazed CerDIP | 16 | 工业 |
| AD526BD | 量产 | 16 ld Side-Brazed CerDIP | 16 | 工业 |
| AD526BDZ | 量产 | 16 ld Side-Brazed CerDIP | 16 | 工业 |
| AD526CD | 量产 | 16 ld Side-Brazed CerDIP | 16 | 工业 |
| AD526CDZ | 量产 | 16 ld Side-Brazed CerDIP | 16 | 工业 |
| AD526JN | 量产 | 16 ld PDIP | 16 | 商业 |
| AD526JNZ | 量产 | 16 ld PDIP | 16 | 商业 |
| AD526SD | 量产 | 16 ld Side-Brazed CerDIP | 16 | 军用 |
| AD526SD/883B | 量产 | 16 ld Side-Brazed CerDIP | 16 | 军用 |
AD526 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AD526 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