AD626ARZ

The AD626 is a low cost, true single- supply differential amplifier designed for amplifying and low- pass filtering small differential voltages from sources having a large common- mode voltage. The AD626 can operate from either a single supply of +2.4V to +10V, or dual supplies of +1.2V to ±6V. The input common- mode range of this amplifier is equal to 6 (+VS - 1V) which provides a +24V CMR while operating from a +5V supply. Furthermore, the AD626 features a CMR of 90 dB typ. The amplifier's inputs are protected against continuous overload of up to 50V, and RFI filters are included in the attenuator network. The output range is +0.03V to +4.9V using a +5V supply. The amplifier provides a preset gain of 10, but gains between 10 and 100 can be easily configured with an external resistor. 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 temperature range of - 40°C to +85°C. The AD626 is available in two 8- lead packages: a plastic mini- DIP and SOIC.

Applications

• Current Sensing
• Interface for Pressure Transducers, Position Indicators, Strain Gages, and Other Low Level Signal Sources

Key features

• Pin Selectable Gains of 10 and 100
• True Single- Supply Operation
• Single- Supply Range of +2.4V to +10V
• Dual- Supply Range of ±1.2V to ±6V
• Wide- Output Voltage Range of 30mV to 4.7V
• Optional Low- Pass Filtering
• Excellent DC Performance
• Low Input Offset Voltage: 500μV Max
• Large Common- Mode Range: 0V to +54V
• Low Power: 1.2mW (VS = +5V)
• Good CMR of 90 dB Typ
• AC Performance
• Fast Settling Time: 24μs (0.01%)
• Includes Input Protection
• Series Resistive Inputs (RIN = 200kΩ)
• RFI Filters Included
• Allows 50V Continuous Overload