型号LMP2231
品牌
分类精密运算放大器 (Vos<1mV)
描述具有 CMOS 输入的单路微功耗、1.6V、精密运算放大器
相关操作
产品概述

参数

Number of channels 1
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 1.6
Vos (offset voltage at 25°C) (max) (mV) 0.15
GBW (typ) (MHz) 0.13
Slew rate (typ) (V/µs) 0.048
Rail-to-rail In to V-, Out
Offset drift (typ) (µV/°C) 0.3
Iq per channel (typ) (mA) 0.01
Vn at 1 kHz (typ) (nV√Hz) 60
CMRR (typ) (dB) 97
Rating Catalog
Operating temperature range (°C) -40 to 125
Input bias current (max) (pA) 1
Iout (typ) (A) 0.022
Architecture CMOS
Input common mode headroom (to negative supply) (typ) (V) -0.2
Input common mode headroom (to positive supply) (typ) (V) -0.8
Output swing headroom (to negative supply) (typ) (V) 0.017
Output swing headroom (to positive supply) (typ) (V) -0.017
THD + N at 1 kHz (typ) (%) 0.002

封装 | 引脚 | 尺寸

SOIC (D) 8 29.4 mm² 4.9 x 6
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8

特性

  • (For VS = 5V, TA = 25°C, Typical Unless Otherwise Noted)

  • Supply Current 10 µA
  • Operating Voltage Range 1.6V to 5.5V
  • TCVOS (LMP2231A) ±0.4 µV/°C (max)
  • TCVOS (LMP2231B) ±2.5µV/°C (max)
  • VOS ±150 µV (max)
  • Input Bias Current 20 fA
  • PSRR 120 dB
  • CMRR 97 dB
  • Open Loop Gain 120 dB
  • Gain Bandwidth Product 130 kHz
  • Slew Rate 58 V/ms
  • Input Voltage Noise, f = 1 kHz 60 nV/√Hz
  • Temperature Range –40°C to 125°C

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说明

The LMP2231 is a single micropower precision amplifier designed for battery powered applications. The 1.6V to 5.5V operating supply voltage range and quiescent power consumption of only 16 μW extend the battery life in portable battery operated systems. The LMP2231 is part of the LMP precision amplifier family. The high impedance CMOS input makes it ideal for instrumentation and other sensor interface applications.

The LMP2231 has a maximum offset of 150 µV and maximum offset voltage drift of only 0.4 µV/°C along with low bias current of only ±20 fA. These precise specifications make the LMP2231 a great choice for maintaining system accuracy and long term stability.

The LMP2231 has a rail-to-rail output that swings 15 mV from the supply voltage, which increases system dynamic range. The common mode input voltage range extends 200 mV below the negative supply, thus the LMP2231 is ideal for use in single supply applications with ground sensing.

The LMP2231 is offered in 5-Pin SOT-23 and 8-pin SOIC packages.

The dual and quad versions of this product are also available. The dual, LMP2232 is offered in 8-pin SOIC and VSSOP. The quad, LMP2234 is offered in 14-pin SOIC and TSSOP.