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AD22050
ObsoleteSingle-Supply Sensor Interface Amplifier
Part Details
- Gain of ×20, Alterable from ×1 to ×160
- Input CMR from Below Ground to 6× (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 kO
- Drives 1kO 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: -40°C to + 125°C
The AD22050 is a single-supply difference amplifier for amplifying and low-pass filtering small differential voltages (typically 100 mV FS at a gain of 40) from sources having a large common-mode voltage.
Supply voltages from +3.0 V to +36 V can be used. The input common-mode range extends from below ground to +24 V using a +5 V supply with excellent rejection of this common-mode voltage. This is achieved by the use of a special resistive attenuator at the input, laser trimmed to a very high differential balance.
Provisions are included for optional low-pass filtering and gain adjustment. An accurate midscale offset feature allows bipolar signals to be amplified.
Suggested Replacement Parts
High Voltage, Precision Difference Amplifier
Documentation
Data Sheet 1
Application Note 1
Technical Articles 2
Technical Book 1
This is the most up-to-date revision of the Data Sheet.