型号INA121
品牌
分类仪表放大器
描述FET 输入低功耗仪表放大器
相关操作
产品概述

参数

Number of channels 1
Vs (max) (V) 36
Vs (min) (V) 4.5
Input offset (±) (max) (µV) 500
Voltage gain (min) (V/V) 1
Voltage gain (max) (V/V) 10000
Noise at 1 kHz (typ) (nV√Hz) 20
Features Overvoltage protection
CMRR (min) (dB) 106
Input offset drift (±) (max) (V/°C) 0.000005
Input bias current (±) (max) (nA) 0.05
Iq (typ) (mA) 0.45
Bandwidth at min gain (typ) (MHz) 0.6
Gain error (±) (max) (%) 0.5
Operating temperature range (°C) -40 to 85
Rating Catalog
Type Resistor
Gain nonlinearity (±) (max) (%) 0.005
Output swing headroom (to negative supply) (typ) (V) 0.15
Output swing headroom (to positive supply) (typ) (V) -0.9
Input common mode headroom (to negative supply) (typ) (V) 2
Input common mode headroom (to positive supply) (typ) (V) -2
Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 1

封装 | 引脚 | 尺寸

PDIP (P) 8 92.5083 mm² 9.81 x 9.43
SOIC (D) 8 29.4 mm² 4.9 x 6

特性

  • LOW BIAS CURRENT: ±4pA
  • LOW QUIESCENT CURRENT: ±450µA
  • LOW INPUT OFFSET VOLTAGE: ±200µV
  • LOW INPUT OFFSET DRIFT: ±2µV/°C
  • LOW INPUT NOISE: 20nV/sqrt(Hz) at f = 1kHz (G =100)
  • HIGH CMR: 106dB
  • WIDE SUPPLY RANGE: ±2.25V to ±18V
  • LOW NONLINEARITY ERROR: 0.001% max
  • INPUT PROTECTION TO ±40V
  • 8-PIN DIP AND SO-8 SURFACE MOUNT

说明

The INA121 is a FET-input, low power instrumentation amplifier offering excellent accuracy. Its versatile three-op amp design and very small size make it ideal for a variety of general purpose applications. Low bias current (±4pA) allows use with high impedance sources.

Gain can be set from 1V to 10,000V/V with a single external resistor. Internal input protection can withstand up to ±40V without damage.

The INA121 is laser-trimmed for very low offset voltage (±200µV), low offset drift (±2µV/°C), and high common-mode rejection (106dB at G = 100). It operates on power supplies as low as ±2.25V (+4.5V), allowing use in battery operated and single 5V systems. Quiescent current is only 450µA.

Package options include 8-pin plastic DIP and SO-8 surface mount. All are specified for the -40°C to +85°C industrial temperature range.