This document introduces the features and characteristics of AD8229-KGD, an ultralow noise instrumentation amplifier designed for measuring small signals in the presence of large common-mode signals. The device features 1 nV/√Hz input noise, 45 nV/√Hz output noise, 126 dB CMRR, and 15 MHz bandwidth. It is suitable for various harsh environment data acquisition, exhaust gas measurement and other occasions.
The document details the AD8229-KGD, an ultralow noise instrumentation amplifier specifically designed for measuring small signals in harsh environments and at high temperatures. It features industry-leading input noise performance of 1 nV/√Hz and is dielectrically isolated to prevent leakage currents at elevated temperatures.
Key specifications include a common-mode rejection ratio (CMRR) up to 126 dB, a bandwidth of 15 MHz at unity gain, and an operating temperature range from −40°C to +210°C. The device is configured with a single resistor for gain settings ranging from 1 to 1000. This manual is written in Chinese.
| Input Noise Voltage Density | 1 nV/√Hz |
|---|---|
| Output Noise Voltage Density | 45 nV/√Hz |
| Maximum Operating Temperature | +210°C |
| Minimum CMRR (G=1) | 86 dB |
| Maximum CMRR (G=100) | 126 dB |
| Bandwidth at Unity Gain | 15 MHz |
| Slew Rate | 22 V/µs |
| Gain Range | 1 to 1000 |
The device is designed for operation up to +210°C.
Gain is set using a single external resistor, with a range from 1 to 1000.
It is suitable for down-hole instrumentation, harsh environment data acquisition, exhaust gas measurements, and vibration analysis.