ISL28134：零漂移轨对轨放大器概述

全新5V超低噪声、斩波稳定式零漂移轨对轨放大器---ISL28134能在与竞争对手放大器耗电量类似情况下，将噪声降低一半，进一步扩展了Intersil精密运算放大器产品系列。对于压力、温度、医疗、应变计和惯性传感器的模拟前端的微小信号放大来说，ISL28134是卓越的设计选择。该产品可在24位delta sigma型模数转换器（ADC）之前提供放大作用，是低噪声仪表系统的理想选择。

The ISL28134 is a single, chopper-stabilized Zero-Driftoperational amplifier optimized for single and dual supplyoperation from 2.25V to 6.0V and ±1.125V and ±3.0V. TheISL28134 uses auto-correction circuitry to provide very low inputoffset voltage, drift and a reduction of the 1/f noise corner below0.1Hz. The ISL28134 achieves ultra low offset voltage, offsettemperature drift, wide gain bandwidth and rail-to-railinput/output swing while minimizing power consumption.

The ISL28134 is ideal for amplifying the sensor signals of analogfront-ends that include pressure, temperature, medical, straingauge and inertial sensors down to the μV levels.The ISL28134 can be used over standard amplifiers with highstability over the industrial temperature range of -40°C to +85°Cand the full industrial temperature range of -40°C to +125°C.The ISL28134 is available in an industry standard pinout SOICand SOT-23 packages.

应用信息

Medical instrumentationSensor gain ampsPrecision low drift, low frequency ADC driversPrecision voltage reference buffersThermopile, thermocouple, and other temperature sensors front-end amplifiersInertial sensorsProcess control systemsWeight scales and strain gauge sensors

特性：

Rail-to-rail inputs and outputs

CMRR @ VCM = 0.1V beyond VS . . . . . . . . . . . . 135dB, typ

VOH and VOL . . . . . . . . . . . . . . . . . . . ..10mV from VS, typ

No 1/f noise corner down to 0.1Hz

Input noise voltage . . . . . . . . . . . . . . . . .10 nV/√Hz @ 1kHz

0.1Hz to 10Hz noise voltage. . . . . . . . . . . . . 250nVP-P

Low offset voltage . . . . . . . . . . . . . . . . . . 2.5μV, Max

Superb offset drift . . . . . . . . . . . . . . . . . .15nV/°C, Max

Single supply . . . . . . . . . . . . . . . . . . . . . 2.25V to 6.0V

Dual supply . . . . . . . . . . . . . . . . . . . . . . 125V to ±3.0V

Low ICC . . . . . . . . . . . . . . . . . . . . . . . . 675μA, typ

Wide bandwidth . . . . . . . . . . . . . . . . . . . . . 3.5MHz

Operating temperature range

Industrial . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C

Full industrial . . . . . . . . . . . . . . . . . . . . . -40°C to +125°C

封装：

Single: SOIC, SOT-23, UTDFN (1.6mmx1.6mm)