Overview
The AD822AR is a dual precision, low power FET input operational amplifier produced by Analog Devices Inc. It 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. This amplifier features true single-supply capability, allowing it to accommodate input signals below ground in single-supply mode. The AD822AR is known for its high load drive, excellent ac and dc performance, and low noise characteristics, making it an exceptionally versatile amplifier for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 5 V to 30 V, ±2.5 V to ±15 V | V |
| Number of Channels | 2 | - |
| Unity-Gain Bandwidth | 1.8 MHz | Hz |
| Slew Rate | 3 V/μs | V/μs |
| Input Offset Voltage | 0.4 to 2 mV | mV |
| Input Bias Current | 2 to 25 pA | pA |
| Common Mode Rejection Ratio (CMRR) | 80 dB | dB |
| Quiescent Current | 800 μA per amplifier | μA |
| Output Current | Minimum of 15 mA | mA |
| Capacitive Load Drive | Up to 350 pF | pF |
| Operating Temperature Range | −40°C to +85°C | °C |
| Package Types | PDIP, MSOP, SOIC | - |
Key Features
- True Single-Supply Operation: The AD822AR can operate from a single supply of 5 V to 30 V or from dual supplies of ±2.5 V to ±15 V.
- Rail-to-Rail Output: Output voltage swing extends to within 10 mV of each rail, providing maximum output dynamic range.
- High Load Drive: Drives up to 350 pF of direct capacitive load and provides a minimum output current of 15 mA.
- Excellent AC Performance: Unity-gain bandwidth of 1.8 MHz, slew rate of 3 V/μs, and low noise characteristics.
- Good DC Performance: Maximum input offset voltage of 800 μV, offset voltage drift of 2 μV/°C, and low input bias currents.
- Low Noise: Input voltage noise of 13 nV/√Hz at 10 kHz.
- No Phase Inversion: Ensures stable operation without phase inversion.
Applications
The AD822AR is suitable for a wide range of applications due to its versatility and performance characteristics. Some key applications include:
- Medical Instrumentation: Its precision and low noise make it ideal for medical devices.
- Low Power References and Regulators: Suitable for applications requiring low power consumption and high precision.
- Audio Signal Processing: Used in audio signal channels due to its high load drive and low noise.
- Industrial Automation: Applicable in various industrial automation systems requiring precise and reliable signal processing.
Q & A
- What is the supply voltage range for the AD822AR?
The AD822AR 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 unity-gain bandwidth of the AD822AR?
The unity-gain bandwidth of the AD822AR is 1.8 MHz.
- What is the slew rate of the AD822AR?
The slew rate of the AD822AR is 3 V/μs.
- What is the maximum input offset voltage of the AD822AR?
The maximum input offset voltage of the AD822AR is 800 μV.
- What is the common mode rejection ratio (CMRR) of the AD822AR?
The CMRR of the AD822AR is 80 dB.
- What is the quiescent current per amplifier for the AD822AR?
The quiescent current per amplifier for the AD822AR is 800 μA.
- What is the minimum output current of the AD822AR?
The minimum output current of the AD822AR is 15 mA.
- What is the capacitive load drive capability of the AD822AR?
The AD822AR can drive up to 350 pF of direct capacitive load.
- What are the available package types for the AD822AR?
The AD822AR is available in PDIP, MSOP, and SOIC packages.
- What is the operating temperature range for the AD822AR?
The operating temperature range for the AD822AR is −40°C to +85°C.
- Is the AD822AR suitable for medical instrumentation?
Yes, the AD822AR is suitable for medical instrumentation due to its precision and low noise characteristics.
