AD22055

a FEATURES Gain of 400. Alterable from 40 to 1000 Output Span 20 mV to (VS – 0.25) V 1 Pole Low-Pass Filtering Available Offset Capability Differential Input Resistance 230 k⍀ Drives 1 k⍀ Load to +4 V Using VS = +5 V Supply Voltage: +3 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: –40؇ C to +125؇ C APPLICATIONS Interface for Pressure Transducers, Position Indicator, Strain Gages and Other Low Level Signal Sources IN+ 8 Single Supply Bridge Transducer Amplifier AD22055 FUNCTIONAL BLOCK DIAGRAM +VS 6 OFS 7 FILT 3 AD22055 A1 IN– 1 A2 5 OUT 4 GAIN 2 GND GENERAL DESCRIPTION The AD22055 accepts a differential signal from a bridge transducer whose common-mode signal can be anywhere between the power supplies. The extended temperature range allows for local signal conditioning for oil and hydraulic pressure sensors as well as other automotive sensors. The use of an external gain resistor allows the user to compensate transducer gain error and temperature drift. +5 VOLT VREF OUTPUT 8 7 6 5 IN+ OFS +VS OUT AD22055 IN– GND FILT GAIN 1 2 3 4 1kΩ GAIN = 400 ANALOG GROUND Figure 1. Typical Application Circuit for a Pressure Sensor Interface REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties wh...