Overview
The AD822AN, produced by Analog Devices Inc., is a dual precision, low power FET input operational amplifier. It is designed to operate from a single supply of 3V to 36V or from dual supplies of ±1.5V to ±18V. This op-amp features true single-supply capability, allowing it to accommodate input signals below ground in single-supply mode. The AD822AN is known for its high load drive capability, excellent AC and DC performance, and low power consumption, making it an exceptionally versatile amplifier for various applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max |
|---|---|---|---|---|
| Supply Voltage | Single Supply | 3V | - | 36V |
| Supply Voltage | Dual Supplies | ±1.5V | - | ±18V |
| Input Voltage Range | TMIN to TMAX | -0.2V | - | +4V |
| Offset Voltage | A Grade | 0.1mV | 0.8mV | 2mV |
| Offset Voltage Drift | A Grade | - | 2µV/°C | - |
| Input Bias Current | VCM = 0V | 2pA | 25pA | - |
| Unity Gain Bandwidth | - | - | 1.8MHz | - |
| Slew Rate | - | - | 3V/µs | - |
| Quiescent Current | TMIN to TMAX | 1.24mA | 1.6mA | - |
| Capacitive Load Drive | G = +1 | - | - | 350pF |
| Operating Output Current | TMIN to TMAX | - | - | 15mA |
Key Features
- True Single Supply Operation: The AD822AN can operate from a single supply of 3V to 36V or from dual supplies of ±1.5V to ±18V, with an input voltage range extending below the negative rail.
- High Load Drive Capability: Drives up to 350pF of direct capacitive load and provides a minimum output current of 15mA.
- Excellent AC Performance: Features a unity gain bandwidth of 1.8MHz, a slew rate of 3V/µs, and –93dB total harmonic distortion (THD) at 10kHz.
- Good DC Performance: Offers low input offset voltage (maximum 800µV), low offset voltage drift (2µV/°C), and low input bias currents (below 25pA).
- Low Power Consumption: Quiescent current is typically 1.6mA per amplifier.
- Low Noise: Input voltage noise is 13nV/√Hz at 10kHz.
- No Phase Inversion: Ensures stable operation without phase inversion.
Applications
- Medical Instrumentation: Suitable for medical devices requiring high precision and low power consumption.
- Low Power References and Regulators: Ideal for applications needing stable voltage references and regulators.
- Industrial Automation: Used in various industrial control systems due to its robust performance and versatility.
- Audio Equipment: Applies to audio circuits requiring low noise and high fidelity.
- Measurement and Testing Equipment: Employed in precision measurement instruments due to its high accuracy and stability.
Q & A
- What is the supply voltage range for the AD822AN?
The AD822AN can operate from a single supply of 3V to 36V or from dual supplies of ±1.5V to ±18V.
- What is the input voltage range for the AD822AN?
The input voltage range extends below the negative rail, allowing input signals below ground in single-supply mode.
- What is the unity gain bandwidth of the AD822AN?
The unity gain bandwidth is 1.8MHz.
- What is the slew rate of the AD822AN?
The slew rate is 3V/µs.
- How much capacitive load can the AD822AN drive?
The AD822AN can drive up to 350pF of direct capacitive load.
- What is the maximum output current of the AD822AN?
The maximum output current is 15mA.
- What is the quiescent current of the AD822AN?
The quiescent current is typically 1.6mA per amplifier.
- What are the key DC performance characteristics of the AD822AN?
The AD822AN features low input offset voltage (maximum 800µV), low offset voltage drift (2µV/°C), and low input bias currents (below 25pA).
- In what temperature range is the AD822AN rated?
The AD822AN is rated over the industrial temperature range of –40°C to +85°C.
- What packages are available for the AD822AN?
The AD822AN is available in 8-lead PDIP, MSOP, and SOIC_N packages.
