Overview
The AD820ARMZ, produced by Analog Devices Inc., is a precision, low-power, FET input operational amplifier. It is designed to operate from a single supply of 5 V to 36 V or dual supplies of ±2.5 V to ±18 V. This op amp features true single-supply capability, allowing it to accommodate input signals below ground in single-supply mode. The AD820 is known for its high dc precision, low input bias currents, and low input voltage noise, making it suitable for a wide range of applications requiring high accuracy and low power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range | 5 | - | 36 | V (Single Supply) |
| Supply Voltage Range (Dual) | ±2.5 | - | ±18 | V |
| Input Offset Voltage | 0.4 | 2 | 0.3 | mV |
| Offset Voltage Drift | 2 | 2 | - | μV/°C |
| Input Bias Current | 2 | 25 | - | pA |
| Unity Gain Bandwidth | 1.8 | 1.8 | - | MHz |
| Slew Rate | 3 | 3 | - | V/μs |
| Output Current | 15 | - | - | mA |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | - | 8-Lead MSOP, 8-Lead SOIC_N, 8-Lead PDIP |
Key Features
- True Single-Supply Capability: Operates from a single supply of 5 V to 36 V or dual supplies of ±2.5 V to ±18 V.
- Low Power Consumption: Quiescent supply current of 800 μA.
- High DC Precision: Input offset voltage of 800 μV maximum, offset voltage drift of 2 μV/°C.
- Low Input Bias Currents: Typical input bias currents below 25 pA.
- Low Input Voltage Noise: Suitable for high impedance sources up to 1 GΩ.
- High Dynamic Range: Output voltage swing extends to within 10 mV of each rail.
- Load Drive Capability: Drives up to 350 pF of direct capacitive load and provides a minimum output current of 15 mA.
- Frequency Compensation: Internal frequency compensation to prevent oscillation.
Applications
- Instrumentation: Suitable for precision instrumentation due to its high dc precision and low noise.
- Medical Devices: Used in medical equipment requiring high accuracy and low power consumption.
- Industrial Automation: Ideal for industrial control systems and data acquisition systems.
- Aerospace and Defense: Can be used in various aerospace and defense applications due to its robust performance characteristics.
- Portable Electronics: Suitable for battery-powered devices due to its low power consumption.
Q & A
- What is the supply voltage range for the AD820ARMZ?
The AD820ARMZ 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 AD820ARMZ?
The typical input bias current is below 25 pA.
- What is the unity gain bandwidth of the AD820ARMZ?
The unity gain bandwidth is 1.8 MHz.
- What is the slew rate of the AD820ARMZ?
The slew rate is 3 V/μs.
- What is the maximum output current of the AD820ARMZ?
The minimum output current is 15 mA.
- What are the operating temperature ranges for the AD820ARMZ?
The operating temperature range is -40°C to +85°C.
- What packages are available for the AD820ARMZ?
The AD820ARMZ is available in 8-Lead MSOP, 8-Lead SOIC_N, and 8-Lead PDIP packages.
- What is the input offset voltage of the AD820ARMZ?
The input offset voltage is 800 μV maximum.
- What is the common-mode rejection ratio (CMRR) of the AD820ARMZ?
The CMRR is 66 dB to 80 dB depending on the common-mode voltage range.
- Can the AD820ARMZ drive capacitive loads?
Yes, it can drive up to 350 pF of direct capacitive load.
