Overview
The AD822ARMZ is a dual precision, low power FET input operational amplifier (op amp) produced by Analog Devices Inc. This component is designed for general-purpose amplifier applications and extends its utility to precision instrumentation systems, medical equipment, and automotive applications. It operates from a single supply of 5 V to 30 V or from dual supplies of ±2.5 V to ±15 V, offering true single-supply capability with an input voltage range that extends below the negative rail. This feature allows the AD822 to accommodate input signals below ground while in single-supply mode.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 5 | - | 30 | V (Single Supply) |
| Supply Voltage | ±2.5 | - | ±15 | V (Dual Supply) |
| Input Offset Voltage | 0.4 | 2 | 0.3 | mV (A Grade), mV (B Grade) |
| Input Offset Voltage Drift | 2 | - | - | µV/°C |
| Input Bias Current | 2 | 25 | - | pA (VCM = 0 V) |
| Unity-Gain Bandwidth | - | 1.8 | - | MHz |
| Slew Rate | - | 3 | - | V/µs |
| Supply Current per Amplifier | - | 800 | - | µA |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Types | - | PDIP, MSOP, SOIC_N, TSSOP | - | - |
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 an input offset voltage of 0.4 mV to 2 mV and an offset voltage drift of 2 µV/°C.
- Low input bias currents below 25 pA and low input voltage noise.
- High bandwidth of 1.8 MHz and a slew rate of 3 V/µs.
- Output voltage swing extends to within 10 mV of each rail, providing maximum output dynamic range.
- Available in multiple package types including PDIP, MSOP, SOIC_N, and TSSOP.
- Operates over an industrial temperature range of -40°C to +85°C.
Applications
- Precision instrumentation systems.
- Medical equipment.
- Automotive applications.
- General-purpose amplifier applications.
- Wheatstone bridge sensors.
- Differential drives for high-resolution input ADCs.
- Remote sensors.
Q & A
- What is the supply voltage range for the AD822ARMZ?
The AD822ARMZ 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 input offset voltage of the AD822ARMZ?
The input offset voltage is 0.4 mV to 2 mV for the A grade and 0.3 mV to 1.5 mV for the B grade.
- What is the input bias current of the AD822ARMZ?
The input bias current is below 25 pA at VCM = 0 V.
- What is the unity-gain bandwidth of the AD822ARMZ?
The unity-gain bandwidth is 1.8 MHz.
- What is the slew rate of the AD822ARMZ?
The slew rate is 3 V/µs.
- What are the package types available for the AD822ARMZ?
The AD822ARMZ is available in PDIP, MSOP, SOIC_N, and TSSOP packages.
- What is the operating temperature range for the AD822ARMZ?
The operating temperature range is -40°C to +85°C.
- What are some typical applications of the AD822ARMZ?
Typical applications include precision instrumentation systems, medical equipment, automotive applications, and general-purpose amplifier applications.
- How does the AD822ARMZ handle input signals below ground in single-supply mode?
The AD822ARMZ has true single-supply capability with an input voltage range that extends below the negative rail, allowing it to accommodate input signals below ground.
- What is the output voltage swing of the AD822ARMZ?
The output voltage swing extends to within 10 mV of each rail, providing maximum output dynamic range.
