有没有比PGA204精度更好的程控放大器啊？？？

有没有比PGA204精度更好的程控放大器啊

Andy Tan：

什么应用？

可以看下PGA280 Zerø-Drift Programmable Gain Instrumentation Amplifier:

WIDE INPUT RANGE: ±15.5V at ±18V SUPPLY
BINARY GAIN STEPS: 128V/V to 1/8V/V
ADDITIONAL SCALING FACTOR: 1V/V and 1⅜V/V
LOW OFFSET VOLTAGE: 3µV at G = 128
NEAR-ZERO LONG-TERM DRIFT OF OFFSET VOLTAGE
NEAR-ZERO GAIN DRIFT: 0.5ppm/°C
EXCELLENT LINEARITY: 1.5ppm
EXCELLENT CMRR: 140dB
HIGH INPUT IMPEDANCE
VERY LOW 1/f NOISE

http://www.ti.com.cn/cn/lit/ds/symlink/pga280.pdf

Kailyn Chen：

可以看下PGA的选型指南，根据自己实际应用情况进行筛选：

http://www.ti.com/lsds/ti/amplifiers/pga-vga/pga-vga-products.page#p3229=PGA