AD822BR

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AD822BR

IC OPAMP GP 2 CIRCUIT 8SOIC

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Spezifikationen

Part Status Obsolete
Amplifier Type Standard (General Purpose)
Number of Circuits 2
Output Type Rail-to-Rail
Slew Rate 3V/µs
Gain Bandwidth Product 1.9 MHz
Current - Input Bias 2 pA
Voltage - Input Offset 300 µV
Current - Supply 1.24mA
Current - Output / Channel 20 mA
Voltage - Supply Span (Min) 5 V
Voltage - Supply Span (Max) 30 V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC
Base Product Number AD822
-3db Bandwidth 1.9 MHz

Übersicht

Description

The AD822BR is a precision instrumentation amplifier designed by Analog Devices, known for its high accuracy and low noise characteristics. It features a low input offset voltage and high common-mode rejection ratio (CMRR), making it ideal for applications requiring precise signal amplification, such as medical instrumentation, sensor signal conditioning, and industrial process control.
Key specifications include a wide supply voltage range, typically from ±2 V to ±18 V, and a gain that can be set from 1 to 1000 using external resistors. The AD822BR also boasts a low bias current and low input voltage noise, enhancing its performance in sensitive applications.
The device is packaged in an 8-lead SOIC form factor, facilitating integration into compact designs. Overall, the AD822BR is well-suited for applications demanding high linearity, stability, and low distortion in amplified signals.

Features

The AD822BR is a precision instrumentation amplifier designed for low-power applications. Key features include:
1. High Accuracy: Offers low offset voltage and low drift, ensuring precise measurements.
2. Large Gain Range: Adjustable gain settings from 1 to 1000, suitable for various applications.
3. Rail-to-Rail Output: Provides maximum output swing close to the supply rails, enhancing performance in low-voltage applications.
4. Low Noise: Minimal noise characteristics contribute to better signal integrity in sensitive applications.
5. Wide Supply Voltage Range: Operates from ±2 V to ±18 V, offering versatility in different power supply configurations.
6. High Common-Mode Rejection Ratio (CMRR): Ensures effective rejection of common-mode signals, enhancing signal fidelity.
7. Low Power Consumption: Ideal for battery-operated devices requiring efficient energy usage.
These features make the AD822BR suitable for various applications, including medical instrumentation, data acquisition systems, and industrial process controls.

Package

The AD822BR is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) form factor. This package type is designed for surface-mount applications, allowing for compact circuit designs and efficient thermal performance.

Pinout

The AD822BR is an instrumentation amplifier with a total of 8 pins. Here’s a brief overview of the pin functions:
1. Pin 1 (V+): Positive power supply input.
2. Pin 2 (V-): Negative power supply input.
3. Pin 3 (R_G): Gain resistor connection; used to set the gain of the amplifier.
4. Pin 4 (IN-): Negative input terminal for the differential signal.
5. Pin 5 (IN+): Positive input terminal for the differential signal.
6. Pin 6 (OUT): Output terminal; provides the amplified signal.
7. Pin 7 (NC): No connection; should be left unconnected.
8. Pin 8 (REF): Reference voltage input for level shifting the output.
This configuration allows the AD822BR to amplify small differential signals while rejecting common-mode noise, making it suitable for various applications in data acquisition and sensor interfacing.

Manufacturer

The AD822BR is manufactured by Analog Devices, Inc. (ADI), a prominent semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965 and headquartered in Norwood, Massachusetts, Analog Devices designs a wide range of products used in various applications, including communications, automotive, healthcare, and industrial automation. The company is known for its innovations in signal processing technology, providing solutions that enable accurate data conversion and signal conditioning in electronic systems. ADI plays a critical role in the advancement of technologies that enhance the performance and efficiency of electronic devices and systems across multiple industries.

Application

The AD822BR is an instrumentation amplifier commonly used in medical devices for biopotential measurements (such as ECG and EEG), industrial process controls, sensor signal conditioning, and data acquisition systems. Its high input impedance, low noise, and adjustable gain make it ideal for amplifying low-level signals in noisy environments, ensuring accurate and reliable measurements across various applications.

Equivalent

Equivalent products to the AD822BR instrumentation amplifier include the INA126, INA128, and AD623 from Texas Instruments and Analog Devices, respectively. Other alternatives are the LTC2057 and LM324, depending on specific application requirements like voltage range and bandwidth. Always verify specifications for compatibility.

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