Overview
The AD820AR is a single-supply, rail-to-rail, low-power FET-input operational amplifier (op amp) from Analog Devices Inc. It features monolithic construction, making it suitable for portable equipment and battery-powered devices that operate over a wide temperature range. The op amp is known for its high accuracy in signal amplification, low power consumption, and high input impedance. It is available in an 8-pin SOIC package and is pin-for-pin compatible with other popular op amps like LM324, OP07, and LM723.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 1 Channel |
| GBP - Gain Bandwidth Product | 1.8 MHz |
| SR - Slew Rate | 3 V/μs |
| CMRR - Common Mode Rejection Ratio | 80 dB |
| Vos - Input Offset Voltage | 800 μV max |
| en - Input Voltage Noise Density | 13 nV/√Hz @ 10 kHz |
| Supply Voltage - Max | 36 V, ±18 V |
| Supply Voltage - Min | 5 V, ±2.5 V |
| Operating Supply Current | 900 μA |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +85°C |
| Mounting Style | SMD/SMT |
Key Features
- Monolithic construction
- Suitable for portable equipment and battery-powered devices
- Operates over a wide temperature range (-40°C to +85°C)
- Low thermal noise (4 nV/√Hz)
- Excellent input offset voltage, high frequency response, and high common-mode rejection ratio
- Pin-for-pin compatible with LM324, OP07, and LM723
- Dual-mode operation (single and dual supply)
- Low power consumption (15 μA max)
- High input impedance (1 MΩ typ) and low quiescent current (10 μA max)
- Fast settling time (100 ns typ)
Applications
- Signal processing
- Electronic devices
- High precision applications
- Low power systems
- Portable equipment
- Battery-powered devices
- Precision instrumentation
- Photodiode preamps
- Active filters
- 12- to 14-Bit data acquisition systems
- Medical instrumentation
- Low power references and regulators
Q & A
- What is the AD820AR operational amplifier?
The AD820AR is a single-supply, rail-to-rail, low-power FET-input operational amplifier from Analog Devices Inc.
- What are the key specifications of the AD820AR?
Key specifications include a gain bandwidth product of 1.8 MHz, a slew rate of 3 V/μs, and a common-mode rejection ratio of 80 dB. It also has an input offset voltage of 800 μV max and operates over a supply voltage range of 5 V to 36 V or ±2.5 V to ±18 V.
- What are the main features of the AD820AR?
The AD820AR features monolithic construction, low power consumption, high input impedance, and fast settling time. It is also pin-for-pin compatible with other popular op amps like LM324, OP07, and LM723.
- What are the typical applications of the AD820AR?
The AD820AR is used in signal processing, electronic devices, high precision applications, low power systems, portable equipment, battery-powered devices, precision instrumentation, photodiode preamps, active filters, and medical instrumentation.
- What is the operating temperature range of the AD820AR?
The AD820AR operates over a temperature range of -40°C to +85°C.
- What is the package type of the AD820AR?
The AD820AR is available in an 8-pin SOIC package.
- Is the AD820AR compatible with other op amps?
Yes, the AD820AR is pin-for-pin compatible with LM324, OP07, and LM723.
- What is the maximum quiescent current of the AD820AR?
The maximum quiescent current of the AD820AR is 900 μA.
- Can the AD820AR handle capacitive loads?
Yes, the AD820AR can drive up to 350 pF of direct capacitive load.
- What is the minimum output current of the AD820AR?
The minimum output current of the AD820AR is 15 mA.
