The AD624 is a high precision, low noise, instrumentation amplifier designed primarily for use with low level transducers, including load cells, strain gauges and pressure transducers. An outstanding combination of low noise, high gain accuracy, low gain temperature coefficient and high linearity make the AD624 ideal for use in high resolution data acquisition systems.
The AD624 instrumentation amplifier from Analog Devices offers exceptionally low noise (0.2 pV p‑p from 0.1 Hz to 10 Hz) and high gain accuracy across a wide temperature range. It provides pin‑programmable gains of 1, 100, 200, 500 and 1000 without external components, and additional gains can be set with a single external resistor.
Designed for low‑level transducers such as load cells and strain gauges, the device features a 130 dB minimum CMRR at high gain, a 25 MHz gain‑bandwidth product, and a supply range of +6 V to +18 V. Detailed specifications, typical characteristics, and application notes are included in this datasheet.
| Low Noise | 0.2 pV p‑p (0.1 Hz‑10 Hz) |
|---|---|
| Gain Bandwidth Product | 25 MHz |
| Input Offset Voltage | 25 pV max |
| CMRR | 130 dB min (G = 500‑1000) |
| Supply Voltage Range | +6 V to +18 V |
The AD624 achieves a low noise of 0.2 pV p‑p measured from 0.1 Hz to 10 Hz.
Pin‑programmable gains of 1, 100, 200, 500 and 1000 are provided on the chip without any external parts.
The device operates from a supply voltage of +6 V up to +18 V.
The AD624 provides a minimum CMRR of 130 dB at gains between 500 and 1000.