型号THS4531
品牌
分类全差分放大器
描述超低功耗 0.25mA、RRO、全差动放大器
相关操作
产品概述

参数

Number of channels 1
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.5
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5
BW at Acl (MHz) 36
Acl, min spec gain (V/V) 1
Slew rate (typ) (V/µs) 220
Architecture Bipolar, Fully Differential ADC Driver
Vn at flatband (typ) (nV√Hz) 10
Iq per channel (typ) (mA) 0.25
Rail-to-rail Out
Vos (offset voltage at 25°C) (max) (mV) 1
Operating temperature range (°C) -40 to 125
Iout (typ) (mA) 26
2nd harmonic (dBc) 128
3rd harmonic (dBc) 137
Frequency of harmonic distortion measurement (MHz) 0.001
GBW (typ) (MHz) 30
Input bias current (max) (pA) 210000
Features Shutdown
CMRR (typ) (dB) 116
Rating Catalog

封装 | 引脚 | 尺寸

SOIC (D) 8 29.4 mm² 4.9 x 6
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
WQFN (RUN) 10 4 mm² 2 x 2

特性

  • Ultra Low Power:
    • Voltage: 2.5 V to 5.5 V
    • Current: 250 µA
    • Power-Down Mode: 0.5 µA (typical)
  • Fully-Differential Architecture
  • Bandwidth: 36 MHz
  • Slew Rate: 200 V/µs
  • THD: –120 dBc at 1 kHz (1 VRMS, RL= 2 kΩ)
  • Input Voltage Noise: 10 nV/√Hz (f = 1 kHz)
  • High DC Accuracy:
    • VOS Drift: ±4 µV/˚C (–40°C to +125°C)
    • AOL: 114 dB
  • Rail-to-Rail Output (RRO)
  • Negative Rail Input (NRI)
  • Output Common-Mode Control

说明

The THS4531 is a low-power, fully-differential op amp with input common-mode range below the negative rail and rail-to-rail output. The device is designed for low-power data acquisition systems and high density applications where power consumption and dissipation is critical.

The device features accurate output common-mode control that allows for dc coupling when driving analog-to-digital converters (ADCs). This control, coupled with the input common-mode range below the negative rail and rail-to-rail output, allows for easy interface from single-ended ground-referenced signal sources to successive-approximation registers (SARs), and delta-sigma (ΔΣ) ADCs using only single-supply 2.5 V to 5 V power. The THS4531 is also a valuable tool for general-purpose, low-power differential signal conditioning applications.

The THS4531 is characterized for operation over the extended industrial temperature range from –40°C to +125°C. The following package options are available: