型号INA125
品牌
分类仪表放大器
描述具有精密电压参考的仪表放大器
相关操作
产品概述

参数

Number of channels 1
Vs (max) (V) 36
Vs (min) (V) 2.7
Input offset (±) (max) (µV) 250
Voltage gain (min) (V/V) 4
Voltage gain (max) (V/V) 10000
Noise at 1 kHz (typ) (nV√Hz) 38
Features Overvoltage protection
CMRR (min) (dB) 100
Input offset drift (±) (max) (V/°C) 0.000002
Input bias current (±) (max) (nA) 25
Iq (typ) (mA) 0.46
Bandwidth at min gain (typ) (MHz) 0.15
Gain error (±) (max) (%) 0.5
Operating temperature range (°C) -40 to 85
Rating Catalog
Type Resistor
Gain nonlinearity (±) (max) (%) 0.004
Output swing headroom (to negative supply) (typ) (V) 0.4
Output swing headroom (to positive supply) (typ) (V) -0.9
Input common mode headroom (to negative supply) (typ) (V) 4.3
Input common mode headroom (to positive supply) (typ) (V) -4.8
Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.8

封装 | 引脚 | 尺寸

PDIP (N) 16 181.42 mm² 19.3 x 9.4
SOIC (D) 16 59.4 mm² 9.9 x 6

特性

  • LOW QUIESCENT CURRENT: 460µA
  • PRECISION VOLTAGE REFERENCE: 1.24V, 2.5V, 5V or 10V
  • SLEEP MODE
  • LOW OFFSET VOLTAGE: 250µV max
  • LOW OFFSET DRIFT: 2µV/°C max
  • LOW INPUT BIAS CURRENT: 20nA max
  • HIGH CMR: 100dB min
  • LOW NOISE: 38nV/sqrt(Hz) at f = 1kHz
  • INPUT PROTECTION TO ±40V
  • WIDE SUPPLY RANGE
    • Single Supply: 2.7V to 36V
    • Dual Supply: ±1.35V to ±18V
  • 16-PIN DIP and SO-16 SOIC PACKAGES

说明

The INA125 is a low power, high accuracy instrumentation amplifier with a precision voltage reference. It provides complete bridge excitation and precision differential-input amplification on a single integrated circuit.

A single external resistor sets any gain from 4 to 10,000. The INA125 is laser-trimmed for low offset voltage (250µV), low offset drift (2µV/°C), and high common-mode rejection (100dB at G = 100). It operates on single (+2.7V to +36V) or dual (±1.35V to ±18V) supplies.

The voltage reference is externally adjustable with pin-selectable voltages of 2.5V, 5V, or 10V, allowing use with a variety of transducers. The reference voltage is accurate to ±0.5% (max) with ±35ppm/°C drift (max). Sleep mode allows shutdown and duty cycle operation to save power.

The INA125 is available in 16-pin plastic DIP and SO-16 surface-mount packages and is specified for the -40°C to +85°C industrial temperature range.