a Single-Supply Sensor
Interface Amplifier
AD22057 FEATURES
Gain of ⴛ20. Alterable from ⴛ1 to ⴛ160
Input CMR from Below Ground to 6ⴛ (VS – 1 V)
Output Span 20 mV to (VS – 0.2) V
1-, 2-, 3-Pole Low-Pass Filtering Available
Accurate Midscale Offset Capability
Differential Input Resistance 400 k⍀
Drives 1 k⍀ Load to +4 V Using VS = +5 V
Supply Voltage: +3.0 V to +36 V
Transient Spike Protection and RFI Filters Included
Peak Input Voltage (40 ms): 60 V
Reversed Supply Protection: –34 V
Operating Temperature Range: –40ⴗC to +125ⴗC FUNCTIONAL BLOCK DIAGRAM
+VS OFS A1 A2 AD22057
IN+
A1 A2 IN– OUT GND APPLICATIONS
Current Sensing
Motor Control
Interface for Pressure Transducers, Position Indicators,
Strain Gages, and Other Low Level Signal Sources
Accelerometers GENERAL DESCRIPTION The AD22057 is a single-supply difference amplifier for amplifying and low-pass filtering small differential voltages (typically …