AD626AR

低成本，单电源差分放大器 Low Cost, Single Supply Differential Amplifier

PRODUCT DESCRIPTION

The AD626 is a low cost, true single-supply differential amplifier designed for amplifying and low-pass filtering small differential voltages from sources having a large common-mode voltage.

The AD626 can operate from either a single supply of +2.4 V to +10 V, or dual supplies of ±1.2 V to ±6 V. The input common-mode range of this amplifier is equal to 6 +VS – 1 V which provides a +24 V CMR while operating from a +5 V supply. Furthermore, the AD626 features a CMR of 90 dB typ.

FEATURES

  Pin Selectable Gains of 10 and 100

  True Single-Supply Operation

     Single-Supply Range of +2.4 V to +10 V

     Dual-Supply Range of ± 1.2 V to ± 6 V

     Wide Output Voltage Range of 30 mV to 4.7 V

  Optional Low-Pass Filtering

  Excellent DC Performance

     Low Input Offset Voltage: 500 μV Max

     Large Common-Mode Range: 0 V to +54 V

     Low Power: 1.2 mW VS = +5 V

     Good CMR of 90 dB Typ

  AC Performance

     Fast Settling Time: 24 μs 0.01%

  Includes Input Protection

     Series Resistive Inputs RIN = 200 kΩ

     RFI Filters Included

     Allows 50 V Continuous Overload

APPLICATIONS

  Current Sensing

  Interface for Pressure Transducers, Position Indicators, Strain Gages, and Other Low Level Signal Sources