AD22057R Datasheet

Interface - Sensor and Detector Interfaces


The AD22057R 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 commonmode 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 usinga +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. AD22057R Features • Gain of 320. Alterable from 31 to 3160• Input CMR from Below Ground to 63 (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 kV• Drives 1 kV 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: –408C to +1258C AD22057R Applications • Current Sensing• Motor Control• Interface for Pressure Transducers, Position Indicators,Strain Gages, and Other Low Level Signal Sources• Accelerometers


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Manufacturer information


Fairchild has a rich history as a pioneer in the semiconductor industry and that pioneering spirit endures today. In an era where diversity can dilute focus and hamper innovation, we specialize in the development and manufacturing of a complete portfolio of low- to high-power solutions for the mobile, industrial, cloud, automotive, lighting, and computing industries. Fairchild is one of the most reliable partners in the industry, offering the shortest time from concept to silicon, expert FAEs for customer support, and a flexible, multi-source supply chain. Our vision is clear – anticipate the power efficiencies demanded by tomorrow’s electronic products and deliver an amazing design experience

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