AD624

a FEATURES Low Noise: 0.2 ␮V p-p 0.1 Hz to 10 Hz Low Gain TC: 5 ppm max (G = 1) Low Nonlinearity: 0.001% max (G = 1 to 200) High CMRR: 130 dB min (G = 500 to 1000) Low Input Offset Voltage: 25 ␮ V, max Low Input Offset Voltage Drift: 0.25 ␮V/؇ C max Gain Bandwidth Product: 25 MHz Pin Programmable Gains of 1, 100, 200, 500, 1000 No External Components Required Internally Compensated –INPUT G = 100 G = 200 Precision Instrumentation Amplifier AD624 FUNCTIONAL BLOCK DIAGRAM 50⍀ 225.3⍀ 4445.7⍀ 124⍀ G = 500 80.2⍀ RG1 RG2 VB 20k⍀ 20k⍀ AD624 10k⍀ 10k⍀ 10k⍀ 10k⍀ SENSE OUTPUT +INPUT 50⍀ REF PRODUCT DESCRIPTION PRODUCT HIGHLIGHTS 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 AD624C has an input offset voltage drift of less than 0.25 µV/°C, output offset voltage drift of less than 10 µV/°C, CMRR above 80 dB at unity gain (130 dB at G = 500) and a maximum nonlinearity of 0.001% at G = 1. In addition to these outstanding dc specifications, the AD624 exhibits superior ac performance as well. A 25 MHz gain bandwidth product, 5 V/µs slew rate and 15 µs settling time permit the use of the AD624 in high speed data acquisition applications. The AD624 does not ...