Overview
The AD820BRZ-REEL7, produced by Analog Devices Inc., is a precision, low-power FET input operational amplifier. It is designed for single-supply operation from 5 V to 36 V or dual-supply operation from ±2.5 V to ±18 V. This op amp is notable for its true single-supply capability, allowing the input voltage range to extend below the negative rail, and its rail-to-rail output voltage swing. The AD820 is optimized for low power consumption, high precision, and excellent load drive capabilities, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single Supply) | 5 | - | 36 | V |
| Supply Voltage (Dual Supply) | ±2.5 | - | ±18 | V |
| Unity Gain Bandwidth | 1.8 | - | - | MHz |
| Slew Rate | 3 | - | - | V/μs |
| Input Offset Voltage | - | 800 | - | μV |
| Input Offset Voltage Drift | - | 2 | - | μV/°C |
| Input Bias Current | - | 25 | - | pA |
| Quiescent Current | - | 800 | - | μA |
| Capacitive Load Drive | - | 350 | - | pF |
| Minimum Output Current | 15 | - | - | mA |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- True single-supply operation with input voltage range extending below the negative rail.
- Rail-to-rail output voltage swing, providing maximum output dynamic range.
- Low power consumption with a maximum quiescent current of 800 μA.
- Excellent load drive capability, including capacitive load drive up to 350 pF and a minimum output current of 15 mA.
- High precision with low input offset voltage (800 μV max), low offset voltage drift (2 μV/°C), and low input bias current (25 pA max).
- Low noise: 13 nV/√Hz at 10 kHz.
- High AC performance: 1.8 MHz unity gain bandwidth, -93 dB THD at 10 kHz, and 3 V/μs slew rate.
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 AD820BRZ-REEL7? The AD820BRZ-REEL7 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 unity gain bandwidth of the AD820BRZ-REEL7? The unity gain bandwidth is 1.8 MHz.
- What is the slew rate of the AD820BRZ-REEL7? The slew rate is 3 V/μs.
- What is the maximum input offset voltage of the AD820BRZ-REEL7? The maximum input offset voltage is 800 μV.
- What is the input bias current of the AD820BRZ-REEL7? The input bias current is typically below 25 pA.
- What is the quiescent current of the AD820BRZ-REEL7? The quiescent current is 800 μA maximum.
- Can the AD820BRZ-REEL7 drive capacitive loads? Yes, it can drive up to 350 pF of direct capacitive load.
- What is the minimum output current of the AD820BRZ-REEL7? The minimum output current is 15 mA.
- What are some typical applications of the AD820BRZ-REEL7? Typical applications include battery-powered precision instrumentation, photodiode preamps, active filters, and medical instrumentation.
- What is the operating temperature range of the AD820BRZ-REEL7? The operating temperature range is -40°C to +85°C.
