GENERAL DESCRIPTION

The AD8251 is an instrumentation amplifier with digitally programmable gains that has GΩ input impedance, low output noise, and low distortion, making it suitable for interfacing with sensors and driving high sample rate analog-to-digital converters (ADCs). It has a high bandwidth of 10 MHz, low THD of −110 dB, and fast settling time of 785 ns (maximum) to 0.001. Offset drift and gain drift are guaranteed to 1.8 μV/°C and 10 ppm/°C, respectively, for G = 8. In addition to its wide input common voltage range, it boasts a high common-mode rejection of 80 dB at G = 1 from dc to 50 kHz. The combination of precision dc performance coupled with high speed capabilities makes the AD8251 an excellent candidate for data acquisition. Furthermore, this monolithic solution simplifies design and manufacturing and boosts performance of instrumentation by maintaining a tight match of internal resistors and amplifiers.

FEATURES

Small package: 10-lead MSOP

Programmable gains: 1, 2, 4, 8

Digital or pin-programmable gain setting

Wide supply: ±5 V to ±15 V

Excellent dc performance

High CMRR: 98 dB (minimum), G = 8

Low gain drift: 10 ppm/°C (maximum)

Low offset drift: 1.8 μV/°C (maximum), G = 8

Excellent ac performance

Fast settling time: 785 ns to 0.001 (maximum)

High slew rate: 20 V/μs (minimum)

Low distortion: −110 dB THD at 1 kHz, 10 V swing

High CMRR over frequency: 80 dB to 50 kHz (minimum)

Low noise: 18 nV/√Hz, G = 8 (maximum)

Low power: 4.1 mA

APPLICATIONS

Data acquisition

Biomedical analysis

Test and measurement

AD8251-EVAL属于开发板，套件，编程器 > 评估板 - 运算放大器。亚德诺半导体技术有限公司制造生产的AD8251-EVAL评估板 - 运算放大器运算放大器评估板是装有元器件的电路，用于提供特定集成电路或器件的工作实例。该产品族中的电路板提供了运算放大器实例。每个 IC 的通道类型有单通道、双通道、三通道、四通道和八通道，放大器类型包括音频、自动归零、缓冲器、斩波器、电流反馈、电流检测、差动、差分、四通道、仪表、隔离、J-FET、限幅、对数、功率、可编程增益、采样保持、跨阻、可变增益、视频、电压反馈和零漂移。