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AD623ARZ

ADIAD623ARZ

Analog Devices Inc.
Instrumentation Amplifier 1 Circuit Rail-to-Rail 8-SOIC
NRND12,708 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The AD623ARZ is a single-channel instrumentation amplifier offering rail-to-rail output swing and operation from a single or dual supply. It is designed for low power consumption, drawing 375uA quiescent current. Its internal architecture provides a fixed gain or a user-adjustable gain with a single external resistor, making it versatile for various signal conditioning applications.

Why Choose This Part

Engineers choose the AD623ARZ for its excellent balance of low power consumption (375uA), rail-to-rail output, and high input impedance, making it ideal for battery-operated and single-supply applications. Its simple gain setting with one external resistor simplifies circuit design. The 800 kHz bandwidth and 0.3V/us slew rate provide adequate performance for many general-purpose signal conditioning needs.

Applications

Portable Medical Instruments
Its low power consumption and compact SOIC package make it suitable for battery-powered medical devices requiring precise signal amplification.
Transducer Interfaces
The AD623ARZ can accurately amplify small differential signals from sensors like load cells, strain gauges, and pressure transducers, converting them into a usable voltage range.
Low Power Data Acquisition Systems
For remote sensing or data logging applications where power efficiency is critical, this amplifier provides accurate measurement with minimal current draw.
Industrial Process Control
It is well-suited for amplifying sensor outputs in industrial environments, offering high common-mode rejection and robust performance over a -40C to 85C temperature range.
Battery-Powered Instruments
Its ability to operate from a single supply down to 2.7V and its low supply current are beneficial for handheld and other battery-operated equipment.

Key Specifications

Slew Rate 0.3V/us
Output Type Rail-to-Rail
Mounting Type Surface Mount
-3db Bandwidth 800 kHz
Amplifier Type Instrumentation
Package / Case 8-SOIC (0.154", 3.90mm Width)
Current - Supply 375uA
Number of Circuits 1
Current - Input Bias 17 nA
Operating Temperature -40degC ~ 85degC
Voltage - Input Offset 25 uV
Supplier Device Package 8-SOIC
Voltage - Supply Span (Max) 12 V
Voltage - Supply Span (Min) 2.7 V

Getting Started

To get started with the AD623ARZ, engineers typically prototype on a breadboard or custom PCB. The device operates from 2.7V to 12V supply. Gain can be set by a single resistor connected between the RG pins, as detailed in the datasheet. Standard operational amplifier practices for bypassing and layout should be followed for optimal performance.

AD623 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
AD623ARZ (this part) SOIC-8 12,708
AD623ANZ DIP-8 3,331

Also Consider

AD8221ARZ ADIAnalog Devices Inc. - For applications requiring higher bandwidth and lower noise, the AD8221ARZ offers improved performance characteristics while maintaining ease of use.