AD626

The AD626 is a low cost, true single supply differential ampli- fier designed for amplifying and low-pass filtering small differen-tial voltages from sources having a large common-mode voltage.The AD626 can operate from either a single supply of +2.4 V to+10 V, or dual supplies of ±1.2 V to ±6 V. The input common-mode range of this amplifier is equal to 6 (+V_S  1 V) which provides a +24 V CMR while operating from a +5 V supply.Furthermore, the AD626 features a CMR of 90 dB typ.

The amplifier's inputs are protected against continuous overload of up to 50 V, and RFI filters are included in the attenuatornetwork. The output range is +0.03 V to +4.9 V using a +5 Vsupply. The amplifier provides a preset gain of 10, but gains be-tween 10 to 100 can be easily configured with an external resis-tor. Furthermore, a gain of 100 is available by connecting the G= 100 pin to analog ground. The AD626 also offers low-pass filter capability by connecting a capacitor between the filter pin and analog ground.The AD626A and AD626B operate over the industrial tempera-ture range of 40°C to +85°C. The AD626 is available in two 8-lead packages: a plastic mini-DIP and SOIC.