Overview
The AD820AR-REEL is a precision, low power FET input operational amplifier (op amp) produced by Analog Devices Inc. This device is designed for single-supply or dual-supply operation, making it highly versatile for various applications. It can operate from a single supply of 5 V to 36 V or dual supplies of ±2.5 V to ±18 V. The AD820 is known for its true single-supply capability, allowing input signals below ground in single-supply mode and providing an output voltage swing that extends to within 10 mV of each rail.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single/Dual) | 5 / ±2.5 | - | 36 / ±18 | V |
| Input Offset Voltage | 0.4 | 2 | 1.5 | mV |
| Input Bias Current | 2 | 25 | 40 | pA |
| Unity Gain Bandwidth | - | 1.8 | - | MHz |
| Slew Rate | - | 3 | - | V/μs |
| Output Current | - | - | 20 | mA |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | - | 8-Lead SOIC_N |
Key Features
- True Single-Supply Operation: The AD820 can operate from a single supply of 5 V to 36 V or dual supplies of ±2.5 V to ±18 V, allowing input signals below ground in single-supply mode.
- Rail-to-Rail Output: The output voltage swing extends to within 10 mV of each rail, providing maximum output dynamic range.
- Low Power Consumption: The device operates with a low supply current of 800 μA.
- High Precision: Features an offset voltage of 800 μV maximum, offset voltage drift of 2 μV/°C, and low input bias currents below 25 pA.
- High Load Drive Capability: Drives up to 350 pF of direct capacitive load and provides a minimum output current of 15 mA.
- Low Noise and Distortion: Offers −93 dB THD at 10 kHz and a slew rate of 3 V/μs.
Applications
- Industrial Control Systems: Suitable for use in industrial control systems due to its high precision and robust performance.
- Medical Devices: Ideal for medical devices requiring low power consumption and high accuracy.
- Aerospace and Defense: Used in various aerospace and defense applications where reliability and precision are critical.
- Automotive Systems: Applicable in automotive systems for signal conditioning and amplification.
- Test and Measurement Equipment: Employed in test and measurement equipment for its high accuracy and stability.
Q & A
- What is the supply voltage range for the AD820AR-REEL?
The AD820AR-REEL can operate from a single supply of 5 V to 36 V or dual supplies of ±2.5 V to ±18 V.
- What is the typical input bias current of the AD820AR-REEL?
The typical input bias current is below 25 pA.
- What is the unity gain bandwidth of the AD820AR-REEL?
The unity gain bandwidth is 1.8 MHz.
- What is the slew rate of the AD820AR-REEL?
The slew rate is 3 V/μs.
- What is the maximum output current of the AD820AR-REEL?
The maximum output current is 20 mA.
- What is the operating temperature range for the AD820AR-REEL?
The operating temperature range is −40°C to +85°C.
- What package types are available for the AD820AR-REEL?
The AD820AR-REEL is available in 8-Lead SOIC_N and 8-Lead MSOP packages.
- Is the AD820AR-REEL RoHS compliant?
Yes, the AD820AR-REEL is RoHS compliant.
- What are the key applications of the AD820AR-REEL?
The AD820AR-REEL is suitable for industrial control systems, medical devices, aerospace and defense, automotive systems, and test and measurement equipment.
- What is the typical supply current of the AD820AR-REEL?
The typical supply current is 800 μA.
