AD22050 Datasheet | Analog Devices

a Features Gain of ؋20. Alterable from ؋1 to ؋ 160 Input CMR from Below Ground to 6؋ (VS - 1 V) Output Span 20 m V to (VS - 0.2) V 1-, 2-, 3-Pole Low-Pass Filtering Available Accurate Midscale Offset Capability Differential Input Resistance 400 k ⍀ Drives 1 k ⍀ Load to +4 V Using V S = +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 APPLICATIONS Current Sensing Motor Control Interface for Pressure Transducers, Position Indicators, Strain Gages, and Other Low Level Signal Sources Single-Supply Sensor Interface Amplifier AD22050 FUNCTIONAL BLOCK DIAGRAM +VS OFS A1 A2 IN+ A1 IN- A2 OUT GENERAL DESCRIPTION The AD22050 is a single-supply difference amplifier for amplifying and low-pass filtering small differential voltages (typically 100 m V FS at a gain of 40) from sources having a large monmode voltage. Supply voltages from +3.0 V to +36 V can be used. The input mon-mode range extends from below ground to +24 V using a +5 V supply with excellent rejection of this mon-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. +VS (CAR BATTERY) SOLENOID LOAD +5V ANALOG OUTPUT 4V PER AMP 100m⍀ 200k⍀ CMOS DRIVER C CORNER FREQUENCY = 0.796Hz-␮F CHASSIS POWER DARLINGTON SINGLE-POLE LOW-PASS FILTERING, GAIN: 40 ANALOG GROUND Figure 1. Typical Application Circuit for a Current Sensor Interface REV. C 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 which may result from its use. No...