Overview
The AD820AR-REEL7, produced by Analog Devices Inc., is a precision, low power FET input operational amplifier. This device is designed to operate from a single supply of 5 V to 36 V or from dual supplies of ±2.5 V to ±18 V. It features true single-supply capability, allowing the input voltage range to extend below the negative rail, which is particularly useful for accommodating input signals below ground in single-supply mode. The AD820 is known for its excellent load drive, low power consumption, and high precision, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single/Dual) | 5 V / ±2.5 V | - | 36 V / ±18 V | V |
| Unity Gain Bandwidth | - | 1.8 MHz | - | MHz |
| Slew Rate | - | 3 V/μs | - | V/μs |
| Input Offset Voltage | - | - | 800 μV | μV |
| Input Bias Current | - | - | 25 pA | pA |
| Quiescent Current | - | 800 μA | - | μA |
| Output Current | - | - | 15 mA | mA |
| Operating Temperature Range | -40°C | - | +85°C | °C |
| Package Type | - | - | 8-Lead SOIC_N | - |
Key Features
- True single-supply capability with input voltage range extending below the negative rail.
- Output voltage swing extends to within 10 mV of each rail, providing maximum output dynamic range.
- Excellent load drive capability, including direct capacitive load up to 350 pF and minimum output current of 15 mA.
- Low power consumption with a maximum quiescent current of 800 μA.
- High precision with low input offset voltage (800 μV max), low input bias current (25 pA max), and low noise (13 nV/√Hz @ 10 kHz).
- High ac performance with a unity gain bandwidth of 1.8 MHz and a slew rate of 3 V/μs.
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 operating supply voltage range for the AD820AR-REEL7?
The AD820AR-REEL7 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 AD820AR-REEL7?
The unity gain bandwidth is 1.8 MHz.
- What is the slew rate of the AD820AR-REEL7?
The slew rate is 3 V/μs.
- What is the maximum input offset voltage of the AD820AR-REEL7?
The maximum input offset voltage is 800 μV.
- What is the maximum input bias current of the AD820AR-REEL7?
The maximum input bias current is 25 pA.
- What is the quiescent current of the AD820AR-REEL7?
The quiescent current is 800 μA.
- What is the minimum output current of the AD820AR-REEL7?
The minimum output current is 15 mA.
- What is the operating temperature range for the AD820AR-REEL7?
The operating temperature range is -40°C to +85°C.
- In what package type is the AD820AR-REEL7 available?
The AD820AR-REEL7 is available in an 8-Lead SOIC_N package.
- What are some typical applications of the AD820AR-REEL7?
Typical applications include battery-powered precision instrumentation, photodiode preamps, active filters, data acquisition systems, medical instrumentation, and low power references and regulators.
