Overview
The AD8422ARMZ-RL, produced by Analog Devices Inc., is a high-performance, low-power, rail-to-rail precision instrumentation amplifier. It is part of the third generation of instrumentation amplifiers, building on the industry-standard AD620 but with improved dynamic range, lower errors, and reduced power consumption. The AD8422 is designed to deliver exceptional performance per unit microampere, making it ideal for a variety of precision applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature | -40°C | 85°C | °C | |
| Supply Voltage (Single) | 4.6 V | 36 V | V | |
| Supply Voltage (Dual) | ±2.3 V | ±18 V | V | |
| Gain Range | 1 | 1000 | V/V | |
| Bandwidth (G = 1) | 2.2 MHz | kHz | ||
| CMRR at 10 kHz (G = 1) | 80 dB | dB | ||
| Input Offset Drift | 0.3 µV/°C | µV/°C | ||
| Input Bias Current | 0.5 nA | nA | ||
| Input Overvoltage Protection | 40 V | V | ||
| Package Type | 8-Lead MSOP |
Key Features
- High precision dc performance with low noise and low current noise.
- Wide supply range: 4.6 V to 36 V single supply and ±2.3 V to ±18 V dual supply.
- Gain range from 1 to 1000 set by a single external resistor.
- Rail-to-rail output and high CMRR (up to 150 dB at G = 1000).
- Input overvoltage protection up to 40 V from the opposite supply rail.
- Low input bias current (0.5 nA) and low input offset drift (0.3 µV/°C).
- High ESD immunity and robust input protection.
- Available in 8-lead LFCSP, 8-lead MSOP, and 8-lead SOIC_N packages.
Applications
- Medical instrumentation
- Industrial process controls
- Strain gages and transducer interfaces
- Precision data acquisition systems
- Channel-isolated systems
- Portable instrumentation
Q & A
- What is the operating temperature range of the AD8422ARMZ-RL?
The operating temperature range is from -40°C to 85°C for the 8-lead MSOP and 8-lead SOIC_N, and up to 125°C for the 8-lead LFCSP.
- What is the supply voltage range for the AD8422ARMZ-RL?
The supply voltage range is from 4.6 V to 36 V for single supply and ±2.3 V to ±18 V for dual supply.
- What is the gain range of the AD8422ARMZ-RL?
The gain range is from 1 to 1000, set by a single external resistor.
- What is the bandwidth of the AD8422ARMZ-RL at a gain of 1?
The bandwidth at a gain of 1 is 2.2 MHz.
- What is the CMRR at 10 kHz for a gain of 1?
The CMRR at 10 kHz for a gain of 1 is a minimum of 80 dB.
- What is the input offset drift of the AD8422ARMZ-RL?
The input offset drift is a maximum of 0.3 µV/°C).
- What is the input bias current of the AD8422ARMZ-RL?
The input bias current is a maximum of 0.5 nA).
- Does the AD8422ARMZ-RL have input overvoltage protection?
- In what packages is the AD8422ARMZ-RL available?
- What are some typical applications of the AD8422ARMZ-RL?
