Overview
The AD822ARZ, 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 5 V to 30 V or from dual supplies of ±2.5 V to ±15 V. This op amp is notable for its true single-supply capability, allowing it to accommodate input signals below ground while in single-supply mode. The AD822ARZ is available in various package types, including 8-lead PDIP, MSOP, and SOIC_N, and is rated over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Test Conditions/Comments | A Grade | B Grade | Unit |
|---|---|---|---|---|
| Supply Voltage | Single supply: 5 V to 30 V, Dual supplies: ±2.5 V to ±15 V | - | - | V |
| Input Voltage Range | TMIN to TMAX | -0.2 to +4 | -0.2 to +4 | V |
| Common-Mode Rejection Ratio (CMRR) | VCM = 0 V to 2 V | 66 to 80 | 66 to 80 | dB |
| Input Impedance (Differential) | - | 10^13 || 0.5 | 10^13 || 0.5 | Ω || pF |
| Input Bias Current | VCM = 0 V | 2 to 25 | 2 to 12 | pA |
| Offset Voltage | - | 0.4 to 2 | 0.3 to 1.5 | mV |
| Offset Voltage Drift | - | 2 | 2 | µV/°C |
| Unity-Gain Bandwidth | - | 1.8 MHz | 1.8 MHz | MHz |
| Total Harmonic Distortion (THD) | f = 10 kHz | -93 dB | -93 dB | dB |
| Slew Rate | - | 3 V/µs | 3 V/µs | V/µs |
| Supply Current per Amplifier | - | 800 µA | 800 µA | µA |
Key Features
- True single-supply capability with input voltage range extending below the negative rail.
- Low power consumption with a supply current of 800 µA per amplifier.
- High dc precision with low offset voltage (maximum 2 mV), low offset voltage drift (2 µV/°C), and low input bias currents (below 25 pA).
- High output dynamic range with output voltage swing extending to within 10 mV of each rail.
- Low noise performance with input voltage noise of 10 nV/√Hz at 1 kHz.
- High bandwidth and slew rate, with a unity-gain bandwidth of 1.8 MHz and a slew rate of 3 V/µs.
- Available in 8-lead PDIP, MSOP, and SOIC_N packages.
Applications
- Instrumentation and measurement systems requiring high precision and low noise.
- Medical devices, such as ECG and EEG amplifiers.
- Aerospace and defense applications where high reliability and precision are critical.
- Industrial control systems and data acquisition systems.
- Audio and video equipment where low distortion and high fidelity are necessary.
Q & A
- What is the supply voltage range for the AD822ARZ?
The AD822ARZ can operate from a single supply of 5 V to 30 V or from dual supplies of ±2.5 V to ±15 V.
- What are the key features of the AD822ARZ?
The AD822ARZ features true single-supply capability, low power consumption, high dc precision, high output dynamic range, low noise performance, and high bandwidth and slew rate.
- What are the typical applications of the AD822ARZ?
The AD822ARZ is commonly used in instrumentation and measurement systems, medical devices, aerospace and defense applications, industrial control systems, and audio and video equipment.
- What is the input voltage range of the AD822ARZ?
The input voltage range extends below the negative rail, allowing for input signals below ground in single-supply mode.
- What is the offset voltage and drift of the AD822ARZ?
The offset voltage is a maximum of 2 mV, and the offset voltage drift is 2 µV/°C.
- What is the unity-gain bandwidth and slew rate of the AD822ARZ?
The unity-gain bandwidth is 1.8 MHz, and the slew rate is 3 V/µs.
- What are the available package types for the AD822ARZ?
The AD822ARZ is available in 8-lead PDIP, MSOP, and SOIC_N packages.
- What is the common-mode rejection ratio (CMRR) of the AD822ARZ?
The CMRR is between 66 dB to 80 dB for VCM = 0 V to 2 V.
- What is the input impedance of the AD822ARZ?
The differential input impedance is 10^13 || 0.5 Ω || pF.
- What is the total harmonic distortion (THD) of the AD822ARZ?
The THD is -93 dB at f = 10 kHz.
