Overview
The AD822BR is a dual precision, low power FET input operational amplifier (op-amp) manufactured by Analog Devices Inc. This device is designed to operate from a single supply of 5 V to 30 V or from dual supplies of ±2.5 V to ±15 V, making it versatile for various applications. The AD822BR is known for its high precision and low power consumption, making it suitable for a wide range of electronic systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±2.5 | - | ±15 | V |
| Input Voltage Range | -0.2 | - | +4 | V |
| Common-Mode Rejection Ratio (CMRR) | 66 | 80 | - | dB |
| Input Impedance (Differential) | 10^13 || 0.5 | - | - | Ω || pF |
| Input Bias Current | 2 | 25 | - | pA |
| Offset Voltage | 0.4 | 2 | - | mV |
| Offset Voltage Drift | 2 | - | - | µV/°C |
| Unity-Gain Bandwidth | 1.8 | - | - | MHz |
| Slew Rate | 3 | - | - | V/µs |
| Supply Current | 0.8 | - | - | mA |
| Output Current / Channel | - | - | 20 | mA |
Key Features
- True Single-Supply Capability: The AD822BR can operate from a single supply of 5 V to 30 V or from dual supplies of ±2.5 V to ±15 V, allowing input signals below ground in single-supply mode.
- Low Power Consumption: The device has a low supply current of 800 µA per amplifier.
- High Precision: Features an offset voltage of 800 µV maximum, offset voltage drift of 2 µV/°C, and input bias currents below 25 pA.
- High Bandwidth: Offers a unity-gain bandwidth of 1.8 MHz and a slew rate of 3 V/µs.
- Low Noise: Provides low input voltage noise, making it suitable for precision applications.
- Output Voltage Swing: Output voltage swing extends to within 10 mV of each rail, providing maximum output dynamic range.
Applications
- Precision Data Acquisition Systems: Suitable for high-precision data acquisition due to its low noise and high accuracy.
- Medical Instrumentation: Used in medical devices requiring high precision and low power consumption.
- Industrial Process Controls: Ideal for industrial applications where precision and reliability are crucial.
- Aerospace Instrumentation: Employed in aerospace applications due to its high performance and reliability.
- Strain Gages and Transducer Interfaces: Used in strain gage and transducer interfaces for precise signal conditioning.
Q & A
- What is the supply voltage range for the AD822BR?
The AD822BR can operate from a single supply of 5 V to 30 V or from dual supplies of ±2.5 V to ±15 V.
- What is the typical input bias current of the AD822BR?
The typical input bias current is below 25 pA.
- What is the unity-gain bandwidth of the AD822BR?
The unity-gain bandwidth is 1.8 MHz.
- What is the slew rate of the AD822BR?
The slew rate is 3 V/µs).
- What is the maximum output current per channel for the AD822BR?
The maximum output current per channel is 20 mA).
- What are the typical applications of the AD822BR?
Typical applications include precision data acquisition systems, medical instrumentation, industrial process controls, aerospace instrumentation, and strain gage and transducer interfaces).
- What is the common-mode rejection ratio (CMRR) of the AD822BR?
The CMRR is 66 dB to 80 dB).
- What is the offset voltage drift of the AD822BR?
The offset voltage drift is 2 µV/°C).
- What are the available package types for the AD822BR?
The AD822BR is available in 8-lead PDIP, MSOP, and SOIC_N packages).
- What is the operating temperature range for the AD822BR?
The operating temperature range is −40°C to +85°C).
