Overview
The AD820ARZ is a precision, low-power FET input operational amplifier (op amp) manufactured by Analog Devices Inc. This single-supply or dual-supply op amp is designed for a wide range of applications requiring high dc precision and low power consumption. It operates from a single supply of 5 V to 36 V or from dual supplies of ±2.5 V to ±18 V, making it versatile for various circuit designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Current - Output / Channel | - | - | 20 | mA |
| Voltage - Supply, Single/Dual (±) | 5 | - | 36 | V |
| Voltage - Supply, Dual (±) | ±2.5 | - | ±18 | V |
| Operating Temperature | -40 | - | 85 | °C |
| Mounting Type | - | - | Surface Mount | - |
| Package / Case | - | - | 8-SOIC (0.154", 3.90mm Width) | - |
| Unity Gain Bandwidth | 1.9 | 1.8 | - | MHz |
| Slew Rate | 3 | 3 | - | V/μs |
| Initial Offset Voltage | 0.1 | 0.8 | - | mV |
| Offset Voltage Drift | 2 | 2 | - | μV/°C |
| Input Bias Current | 2 | 25 | - | pA |
Key Features
- Low Power Consumption: The AD820ARZ operates with a low supply current of 800 μA, making it suitable for power-sensitive applications.
- High DC Precision: It features an initial offset voltage of 0.8 mV maximum and an offset voltage drift of 2 μV/°C, ensuring high dc precision.
- Wide Supply Range: The op amp can operate from a single supply of 5 V to 36 V or from dual supplies of ±2.5 V to ±18 V.
- Rail-to-Rail Output: The output voltage swing extends to within 10 mV of each rail, providing maximum output dynamic range.
- High Load Drive Capability: The AD820ARZ can drive up to 350 pF of direct capacitive load and provides a minimum output current of 15 mA.
- Low Input Bias Current: Typical input bias currents are below 25 pA, which is beneficial for high-impedance source applications.
Applications
- Industrial Automation: Suitable for various industrial control systems due to its high precision and robust performance.
- Medical Devices: Used in medical equipment where low power consumption and high dc precision are critical.
- Aerospace and Defense: Applicable in aerospace and defense systems requiring reliable and precise operational amplifiers.
- Automotive Systems: Employed in automotive electronics for sensor interfaces and signal conditioning.
- Test and Measurement Equipment: Ideal for test and measurement instruments that demand high accuracy and low noise.
Q & A
- What is the operating temperature range of the AD820ARZ?
The AD820ARZ operates over a temperature range of -40°C to 85°C.
- What are the supply voltage ranges for the AD820ARZ?
The AD820ARZ can operate from a single supply of 5 V to 36 V or from dual supplies of ±2.5 V to ±18 V.
- What is the unity gain bandwidth of the AD820ARZ?
The unity gain bandwidth of the AD820ARZ is 1.8 MHz.
- What is the slew rate of the AD820ARZ?
The slew rate of the AD820ARZ is 3 V/μs.
- What is the maximum output current of the AD820ARZ?
The AD820ARZ can provide a minimum output current of 15 mA.
- What is the input bias current of the AD820ARZ?
The typical input bias current of the AD820ARZ is below 25 pA.
- What is the offset voltage drift of the AD820ARZ?
The offset voltage drift of the AD820ARZ is 2 μV/°C.
- What package types are available for the AD820ARZ?
The AD820ARZ is available in an 8-SOIC package.
- Can the AD820ARZ drive capacitive loads?
Yes, the AD820ARZ can drive up to 350 pF of direct capacitive load.
- What are some common applications of the AD820ARZ?
The AD820ARZ is commonly used in industrial automation, medical devices, aerospace and defense systems, automotive systems, and test and measurement equipment.
