Overview
The AD822BRZ is a dual precision, low power FET input operational amplifier (op-amp) 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 op-amp features true single-supply capability, allowing it to accommodate input signals below ground while in single-supply mode. The output voltage swing extends to within 10 mV of each rail, providing maximum output dynamic range. The AD822BRZ is available in three package varieties: 8-lead PDIP, MSOP, and SOIC_N, and is rated over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 5 | - | 30 | V (Single Supply) |
| Supply Voltage | ±2.5 | - | ±15 | V (Dual Supplies) |
| Input Voltage Range | -0.2 | - | +4 | V |
| Common-Mode Rejection Ratio (CMRR) | 66 | 80 | - | dB |
| Input Impedance (Differential) | 1013||0.5 | - | - | Ω||pF |
| Input Bias Current | 2 | - | 25 | pA |
| Offset Voltage | 0.4 | 2 | - | mV |
| Offset Drift | 2 | - | - | µV/°C |
| Unity-Gain Bandwidth | - | 1.8 | - | MHz |
| Slew Rate | - | 3 | - | V/µs |
| Supply Current per Amplifier | - | 800 | - | µA |
Key Features
- True single-supply capability with input voltage range extending below the negative rail.
- Output voltage swing extends to within 10 mV of each rail, providing maximum output dynamic range.
- Low power consumption with a supply current of 800 µA per amplifier.
- High dc precision with low input bias currents (below 25 pA) and low input voltage noise.
- High common-mode rejection ratio (CMRR) of up to 80 dB.
- Available in 8-lead PDIP, MSOP, and SOIC_N packages.
- Rated over the industrial temperature range of −40°C to +85°C.
Applications
- Battery-powered precision instrumentation.
- Photodiode preamps.
- Active filters.
- 12-bit to 14-bit data acquisition systems.
- Medical instrumentation.
- Low power references and regulators.
Q & A
- What is the supply voltage range for the AD822BRZ?
The AD822BRZ 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 voltage range for the AD822BRZ?
The input voltage range extends below the negative rail, allowing input signals below ground in single-supply mode, and up to +4 V.
- What is the common-mode rejection ratio (CMRR) of the AD822BRZ?
The CMRR is up to 80 dB.
- What is the unity-gain bandwidth of the AD822BRZ?
The unity-gain bandwidth is 1.8 MHz.
- What is the slew rate of the AD822BRZ?
The slew rate is 3 V/µs.
- What are the typical applications of the AD822BRZ?
Typical applications include battery-powered precision instrumentation, photodiode preamps, active filters, data acquisition systems, medical instrumentation, and low power references and regulators.
- What are the available package types for the AD822BRZ?
The AD822BRZ is available in 8-lead PDIP, MSOP, and SOIC_N packages.
- What is the operating temperature range for the AD822BRZ?
The operating temperature range is −40°C to +85°C.
- What is the input bias current of the AD822BRZ?
The input bias current is below 25 pA.
- What is the offset voltage of the AD822BRZ?
The offset voltage is up to 2 mV.
