AD8421ARZ-R7
Overview
The AD8421ARZ-R7 is a low power, ultra-low noise instrumentation amplifier designed for high-performance signal conditioning in precision measurements. It features an exceptional 35V/us slew rate and 10 MHz bandwidth, making it suitable for high-speed data acquisition systems and multiplexed applications.
Why Choose This Part
The AD8421 combines a low 3nV/vHz voltage noise with a wide 10 MHz bandwidth, which is rare for an instrumentation amplifier. Its 60 uV maximum input offset and 1 nA input bias current ensure high DC precision, while the wide 5V to 36V supply range accommodates diverse power rail requirements.
Applications
Key Specifications
Getting Started
To evaluate this IC, utilize the EVAL-INAMP-82RZ evaluation board which supports the SOIC-8 package and allows for easy gain setting via a single external resistor. Ensure decoupling capacitors (typically 0.1uF and 10uF) are placed as close to the power supply pins as possible to maintain stability during high-speed transients.
AD8421 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | Current - Input Bias | Voltage - Input Offset | Stock |
|---|---|---|---|---|
| AD8421ARZ-R7 (this part) | SOIC-8 | 1 nA | 60 uV | 1,528 |
| AD8421BRZ (Analog Devices Inc.) | SOIC-8 | 100 pA | 25 uV | 2,584 |
| AD8421ARMZ (Analog Devices Inc.) | TSSOP-8 | 1 nA | 60 uV | 16 |
| AD8421ARZ-RL (Analog Devices Inc.) Reel | SOIC-8 | 1 nA | 60 uV | 7,801 |
| AD8421ARZ (Analog Devices Inc.) | SOIC-8 | 1 nA | 60 uV | 6,954 |
