Overview
The AD820AR-3V is a precision, single-supply, rail-to-rail, low-power FET-input operational amplifier (op amp) produced by Analog Devices Inc. This op amp is designed for high accuracy in signal amplification and is suitable for a wide range of applications, including signal processing, electronic devices, and high-precision systems. It operates from a single supply of 3 V to 36 V or dual supplies of ±2.5 V to ±18 V, making it versatile for various power configurations. The AD820AR-3V features monolithic construction, low thermal noise, and excellent input offset voltage, making it a reliable choice for many industries.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3 V, ±2.5 V | - | 36 V, ±18 V | V |
| Input Offset Voltage | 0.4 | 2 | 1.0 | mV |
| Input Bias Current | 2 | 25 | 10 | pA |
| Slew Rate | - | 3 | - | V/μs |
| Gain Bandwidth Product | - | 1.8 MHz | - | - |
| Common Mode Rejection Ratio (CMRR) | 70 | 80 | 74 | dB |
| Quiescent Current | 620 | 800 | - | μA |
| Output Current | 15 | - | - | mA |
| Capacitive Load Drive | - | - | 350 | pF |
| Operating Temperature Range | -40°C | - | +85°C | °C |
Key Features
- Monolithic construction suitable for portable equipment and battery-powered devices.
- Low thermal noise (4 nV/√Hz) and excellent input offset voltage.
- High common-mode rejection ratio (CMRR) of up to 80 dB.
- Pin-for-pin compatible with LM324, OP07, and LM723.
- Low power consumption with a maximum quiescent current of 800 μA.
- High input impedance (1 MΩ typical) and low quiescent current.
- Fast settling time (100 ns typical) and wide operating temperature range.
- Rail-to-rail output and single-supply operation.
Applications
- Signal processing and electronic devices.
- High-precision applications and low power systems.
- Portable equipment and battery-powered devices.
- Automotive, medical, industrial, and consumer electronics.
Q & A
- What is the supply voltage range for the AD820AR-3V?
The AD820AR-3V operates from a single supply of 3 V to 36 V or dual supplies of ±2.5 V to ±18 V.
- What is the typical slew rate of the AD820AR-3V?
The typical slew rate is 3 V/μs.
- What is the gain bandwidth product of the AD820AR-3V?
The gain bandwidth product is 1.8 MHz.
- What is the common mode rejection ratio (CMRR) of the AD820AR-3V?
The CMRR is up to 80 dB.
- What is the maximum quiescent current of the AD820AR-3V?
The maximum quiescent current is 800 μA.
- What is the operating temperature range of the AD820AR-3V?
The operating temperature range is from -40°C to +85°C.
- Is the AD820AR-3V pin-for-pin compatible with other op amps?
Yes, it is pin-for-pin compatible with LM324, OP07, and LM723.
- What is the typical input bias current of the AD820AR-3V?
The typical input bias current is below 25 pA.
- What is the maximum output current of the AD820AR-3V?
The maximum output current is 15 mA.
- Can the AD820AR-3V drive capacitive loads?
Yes, it can drive up to 350 pF of direct capacitive load.
