Overview
The AD8422BRMZ-R7, produced by Analog Devices Inc., is a high-performance, low-power, rail-to-rail instrumentation amplifier. It is designed to deliver exceptional precision and low noise, making it an ideal choice for a variety of applications requiring high accuracy and reliability. The AD8422 employs advanced process technologies and design techniques to achieve a higher dynamic range and lower errors while consuming less power compared to its predecessors.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | ±2.3 V to ±18 V | ±2.3 V to ±18 V | V | |
| Single Supply Voltage | 4.6 V | 36 V | V | |
| Input Noise (RTI, G = 100) | 0.15 | μV p-p | ||
| Nonlinearity (G = 1, 2 kΩ load) | 0.5 | ppm | ||
| Common Mode Rejection Ratio (CMRR) at 10 kHz (G = 1) | 80 | dB | ||
| Bandwidth (G = 1) | 2.2 | MHz | ||
| Input Offset Drift | 0.3 | μV/°C | ||
| Input Bias Current | 0.5 | nA | ||
| Gain Range | 1 | 1000 | ||
| Operating Temperature Range | −40°C | +125°C | °C |
Key Features
- High precision dc performance with low noise and distortion.
- Rail-to-rail output and input overvoltage protection up to 40 V from the opposite supply.
- Wide supply range: 4.6 V to 36 V single supply and ±2.3 V to ±18 V dual supply.
- Low power consumption with a maximum quiescent current of 368 μA.
- Excellent ac specifications, including a 2.2 MHz bandwidth at a gain of 1.
- High common mode rejection ratio (CMRR), up to 150 dB at a gain of 1000.
- Available in 8-lead LFCSP, 8-lead MSOP, and 8-lead SOIC_N packages.
Applications
- Medical instrumentation: Suitable for high-precision medical devices requiring low noise and high accuracy.
- Industrial process controls: Ideal for applications involving precise signal amplification and conditioning.
- Strain gages and transducer interfaces: Optimized for use with various types of sensors and transducers.
- Precision data acquisition and vibration analysis: Offers high dynamic range and low noise, making it suitable for these applications.
Q & A
- What is the typical input noise of the AD8422 at a gain of 100?
The AD8422 has a typical input noise of 0.15 μV p-p RTI at a gain of 100. - What is the maximum nonlinearity of the AD8422 with a 2 kΩ load at a gain of 1?
The maximum nonlinearity is 0.5 ppm with a 2 kΩ load at a gain of 1. - What is the common mode rejection ratio (CMRR) of the AD8422 at 10 kHz and a gain of 1?
The CMRR is at least 80 dB at 10 kHz and a gain of 1. - What is the bandwidth of the AD8422 at a gain of 1?
The bandwidth is 2.2 MHz at a gain of 1. - What is the input offset drift of the AD8422?
The input offset drift is 0.3 μV/°C. - What is the maximum input bias current of the AD8422?
The maximum input bias current is 0.5 nA. - What are the available package types for the AD8422?
The AD8422 is available in 8-lead LFCSP, 8-lead MSOP, and 8-lead SOIC_N packages. - What is the operating temperature range of the AD8422?
The operating temperature range is from −40°C to +125°C. - What is the maximum quiescent current of the AD8422?
The maximum quiescent current is 368 μA. - What are some typical applications of the AD8422?
Typical applications include medical instrumentation, industrial process controls, strain gages, and transducer interfaces.
