Description

The AD22057RZ is a difference amplifier used for amplifying and low-pass filtering small differential voltages, usually 100 mV FS at a gain of 40 from sources having a large common mode voltage. It is a single-supply type that operates in a voltage supply range of +3.0 V to +36 V. It is designed with a gain of 320 that can be adjusted from x1 to x160.

Specifications and features

• Gain of 320, alterable from x1 to x160
• Input CMR from Below Ground to 6x (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 kΩ
• Drives 1 kV Load to +4 V Using VS = +5 V
• Transient Spike Protection and RFI Filters Included
• Peak Input Voltage (40 ms): 60 V
• Reversed Supply Protection: –34 V
• Operating Temperature Range: –40℃ to +125℃

Application Scenarios

The AD22057RZ is commonly used in the following scenarios:

• Current Sensing
• Motor Control
• Interface for Pressure Transducers, Position Indicators, Strain Gages, and Other Low-Level Signal Sources
• Accelerometers

Comparison

• High gain of up to 320 (default gain = 40)
• Can operate on a single supply voltage in the range of +3.0 V to +36 V
• Has a low-pass filtering option available with a 1 to 3-pole filter
• Has transient spike protection and RFI filters for increased reliability in operation
• Can drive up to 1 kV load to +4 V using VS = +5 V

• Low output span of 20 mV to (VS – 0.2) V
• Differential input resistance is only 400 kΩ