型号INA2128
品牌
分类仪表放大器
描述双路低功耗仪表放大器
相关操作
产品概述

参数

Number of channels 2
Vs (max) (V) 36
Vs (min) (V) 4.5
Input offset (±) (max) (µV) 50
Voltage gain (min) (V/V) 1
Voltage gain (max) (V/V) 10000
Noise at 1 kHz (typ) (nV√Hz) 8
Features Current Feedback, Overvoltage protection
CMRR (min) (dB) 120
Input offset drift (±) (max) (V/°C) 0.0000005
Input bias current (±) (max) (nA) 5
Iq (typ) (mA) 0.7
Bandwidth at min gain (typ) (MHz) 1.3
Gain error (±) (max) (%) 0.5
Operating temperature range (°C) -40 to 85
Rating Catalog
Type Resistor
Gain nonlinearity (±) (max) (%) 0.002
Output swing headroom (to negative supply) (typ) (V) 0.8
Output swing headroom (to positive supply) (typ) (V) -0.9
Input common mode headroom (to negative supply) (typ) (V) 1.7
Input common mode headroom (to positive supply) (typ) (V) -1.4
Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.2

封装 | 引脚 | 尺寸

SOIC (DW) 16 106.09 mm² 10.3 x 10.3

特性

  • LOW OFFSET VOLTAGE: 50µV max
  • LOW DRIFT: 0.5µV/°C max
  • LOW INPUT BIAS CURRENT: 5nA max
  • HIGH CMR: 120dB min
  • INPUTS PROTECTED to ±40V
  • WIDE SUPPLY RANGE: ±2.25V to ±18V
  • LOW QUIESCENT CURRENT: 700µA / IA
  • 16-PIN PLASTIC DIP, SOL-16
  • APPLICATIONS
    • SENSOR AMPLIFIER THERMOCOUPLE, RTD, BRIDGE
    • MEDICAL INSTRUMENTATION
    • MULTIPLE-CHANNEL SYSTEMS
    • BATTERY OPERATED EQUIPMENT

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说明

The INA2128 is a dual, low power, general purpose instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design and small size make it ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200kHz at G = 100).

A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40V without damage.

The INA2128 is laser trimmed for very low offset voltage (50µV), drift (0.5µV/°C) and high common-mode rejection (120dB at G ≥ 100). It operates with power supplies as low as ±2.25V, and quiescent current is only 700µA per IA—ideal for battery operated and multiple-channel systems.

The INA2128 is available in 16-pin plastic DIP, and SOL-16 surface-mount packages, specified for the -40°C to +85°C temperature range.