AD822AR-REEL

Current - Input Bias:	2pA
Base Part Number:	AD822
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	5 V ~ 30 V, ±2.5 V ~ 15 V
Current - Output / Channel:	20mA
Current - Supply:	1.4mA
Voltage - Input Offset:	400µV
Series:	--
-3db Bandwidth:	1.9MHz
Gain Bandwidth Product:	1.9MHz
Slew Rate:	3 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	2
Amplifier Type:	General Purpose
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

AD822AR-REEL is an instrumentation amplifier (IA) designed and manufactured by analog devices Inc. It is designed to function as a gain block or a buffer and to provide low distortion, high linearity and reliability in instrumentation, data acquisition and communications applications in a very compact package. This IC comes with a user selectable gain range of -0.5 to -10 and has a typical single supply operation from 3 V to 15 V. It has low input bias current, low noise and low power consumption compared to traditional amplifiers and can be used in wide range of applications from speed sensing to medical instrumentation.

Working Principle

The AD822AR-REEL uses the traditional instrumentation amplifier configuration with two differential voltage inputs and one output. Instrumentation amplifiers use the difference between two input signals and amplify it to generate a single output. The AD822AR-REEL is designed with a differential amplifier front end and an output buffer to increase the voltage range and eliminate offset voltage and noise in the circuit. The differential amplifier front end consists of two amplifiers arranged in a feedback configuration to provide high common mode rejection. The output buffer amplifies the differential amplifier\'s output and changes the series combined output impedance to provide high common mode rejection.

Application Fields

The AD822AR-REEL is ideal for medical instrumentation, speed sensing, industrial process controls, data acquisition and communications, low power amplifiers and instrumentation amplifiers. It is especially suited for applications where low voltage, low power consumption and high linearity are important. In medical instrumentation, it can be used for monitoring vital signs with low distortion and noise levels. In industrial process control and data acquisition systems, the AD822AR-REEL is suitable for measuring pressure, temperature, flow, level and weight. It can also be used in communications circuits to measure small differential signals, such as errors in transmission. In low power amplifiers and instrumentation amplifiers, the AD822AR-REEL provides high input impedance, low noise and excellent linearity in small form factor packages.

Conclusion

The AD822AR-REEL is an excellent choice for applications where low distortion, high linearity and reliability are required. It is suitable for a wide range of instrumentation, data acquisition and communication applications and offers low power consumption, high common mode rejection, low input bias current, low noise and high impedance.

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