Overview
The AD820ARMZ-R7, manufactured by Analog Devices Inc., is a precision, low-power FET input operational amplifier. It is designed for single-supply operation from 5 V to 30 V and dual-supply operation from ±2.5 V to ±15 V. This op-amp is notable for its true single-supply capability, with an input voltage range that extends below the negative rail, allowing it to accommodate input signals below ground in single-supply mode. The AD820 offers excellent load drive, capacitive load drive up to 350 pF, and a minimum output current of 15 mA, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single) | 5 | - | 30 | V |
| Supply Voltage (Dual) | ±2.5 | - | ±15 | V |
| Unity-Gain Bandwidth | - | 1.8 | - | MHz |
| Slew Rate | - | 3 | - | V/μs |
| Quiescent Current | - | - | 800 | μA |
| Input Offset Voltage | - | - | 800 | μV |
| Input Bias Current | - | - | 25 | pA |
| Output Current | - | - | 20 | mA |
| Operating Temperature | -40 | - | 85 | °C |
| Package Type | - | - | - | 8-MSOP, 8-TSSOP |
Key Features
- True single-supply capability with input voltage range extending below the negative rail.
- Excellent load drive, including capacitive load drive up to 350 pF and a minimum output current of 15 mA.
- Low power consumption with a maximum quiescent current of 800 μA.
- High accuracy with an input offset voltage of 800 μV maximum and an offset voltage drift of 2 μV/°C typical.
- Low noise: 13 nV/√Hz at 10 kHz.
- Rail-to-rail output voltage swing, extending to within 10 mV of each rail.
- High slew rate of 3 V/μs and unity-gain bandwidth of 1.8 MHz.
Applications
- Battery-powered precision instrumentation.
- Photodiode preamps.
- Active filters.
- 12-bit to 14-bit data acquisition systems.
- Medical instrumentation.
- Low power references and regulators.
Q & A
- What is the supply voltage range for the AD820ARMZ-R7?
The AD820ARMZ-R7 can operate from a single supply of 5 V to 30 V or dual supplies of ±2.5 V to ±15 V.
- What is the unity-gain bandwidth of the AD820ARMZ-R7?
The unity-gain bandwidth of the AD820ARMZ-R7 is 1.8 MHz.
- What is the slew rate of the AD820ARMZ-R7?
The slew rate of the AD820ARMZ-R7 is 3 V/μs.
- What is the maximum quiescent current of the AD820ARMZ-R7?
The maximum quiescent current of the AD820ARMZ-R7 is 800 μA.
- What is the input offset voltage of the AD820ARMZ-R7?
The input offset voltage of the AD820ARMZ-R7 is 800 μV maximum.
- What is the operating temperature range of the AD820ARMZ-R7?
The operating temperature range of the AD820ARMZ-R7 is -40°C to +85°C.
- What package types are available for the AD820ARMZ-R7?
The AD820ARMZ-R7 is available in 8-MSOP and 8-TSSOP packages.
- What are some typical applications of the AD820ARMZ-R7?
Typical applications include battery-powered precision instrumentation, photodiode preamps, active filters, 12-bit to 14-bit data acquisition systems, medical instrumentation, and low power references and regulators.
- What is the capacitive load drive capability of the AD820ARMZ-R7?
The AD820ARMZ-R7 can drive up to 350 pF of direct capacitive load.
- What is the minimum output current of the AD820ARMZ-R7?
The minimum output current of the AD820ARMZ-R7 is 15 mA.
