Overview
The AD8422BRZ-RL, produced by Analog Devices Inc., is a high precision, low power, low noise, rail-to-rail instrumentation amplifier. It is designed to deliver the best performance per unit microampere in the industry, making it an ideal choice for various precision applications. The AD8422 is the third generation development of the industry-standard AD620, employing new process technologies and design techniques to achieve higher dynamic range and lower errors while consuming less power than its predecessors.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Quiescent Current | 368 | μA | ||
| Input Voltage Noise at 1 kHz | 8 | nV/√Hz | ||
| Common-Mode Rejection Ratio (CMRR) at 10 kHz (G = 1) | 80 | 80 | dB | |
| Bandwidth (G = 1) | 2.2 | MHz | ||
| Gain Range | 1 | 1000 | ||
| Gain Error (G = 1000) | 0.04 | % | ||
| Input Offset Drift | 0.3 | μV/°C | ||
| Input Bias Current | 0.5 | nA | ||
| Supply Range (Single) | 4.6 | 36 | V | |
| Supply Range (Dual) | ±2.3 | ±18 | V | |
| Input Overvoltage Protection | 40 | V from opposite supply |
Key Features
- High precision dc performance with low noise and distortion.
- Rail-to-rail output and wide input range.
- Low power consumption with a maximum quiescent current of 368 μA.
- Excellent ac specifications, including 80 dB minimum CMRR at 10 kHz (G = 1) and 2.2 MHz bandwidth (G = 1).
- Gain range from 1 to 1000 set by a single resistor.
- Input overvoltage protection up to 40 V from the opposite supply rail.
- Very low bias current, making it suitable for high source impedance applications.
- Available in 8-lead LFCSP, 8-lead MSOP, and 8-lead SOIC_N packages.
Applications
- Medical instrumentation.
- Industrial process controls.
- Strain gages.
- Transducer interfaces.
- Precision data acquisition systems.
- Channel-isolated systems.
- Portable instrumentation.
Q & A
- What is the maximum quiescent current of the AD8422BRZ-RL? The maximum quiescent current is 368 μA.
- What is the input voltage noise at 1 kHz for the AD8422BRZ-RL? The input voltage noise at 1 kHz is 8 nV/√Hz.
- What is the common-mode rejection ratio (CMRR) at 10 kHz for a gain of 1? The CMRR at 10 kHz for a gain of 1 is 80 dB.
- What is the bandwidth of the AD8422BRZ-RL for a gain of 1? The bandwidth for a gain of 1 is 2.2 MHz.
- What is the gain range of the AD8422BRZ-RL? The gain range is from 1 to 1000.
- How is the gain set in the AD8422BRZ-RL? The gain is set by a single resistor.
- What is the input overvoltage protection of the AD8422BRZ-RL? The inputs are protected up to 40 V from the opposite supply rail.
- What are the available package types for the AD8422BRZ-RL? It is available in 8-lead LFCSP, 8-lead MSOP, and 8-lead SOIC_N packages.
- What are some typical applications of the AD8422BRZ-RL? Typical applications include medical instrumentation, industrial process controls, strain gages, transducer interfaces, precision data acquisition systems, channel-isolated systems, and portable instrumentation.
- What is the maximum input bias current of the AD8422BRZ-RL? The maximum input bias current is 0.5 nA.
