Gain of 400. Alterable from 40 to 1000
Output Span 20 mV to (VS – 0.25) V
1 Pole Low-Pass Filtering Available
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
Interface for Pressure Transducers, Position
Indicator, Strain Gages and Other Low Level Signal
Single Supply Bridge
FUNCTIONAL BLOCK DIAGRAM
The AD22055 accepts a differential signal from a bridge trans-
ducer whose common-mode signal can be anywhere between
the power supplies.
The extended temperature range allows for local signal condi-
tioning for oil and hydraulic pressure sensors as well as other
The use of an external gain resistor allows the user to compen-
sate transducer gain error and temperature drift.
IN+ OFS +VS OUT
IN– GND FILT GAIN
GAIN = 400
Figure 1. Typical Application Circuit for a Pressure Sensor Interface
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