AD22057 Single Supply Sensor Interface Amplifier

The AD22057 is a single-supply difference amplifier for the amplification and low-pass filtering of small differential voltages from sources having a large common-mode voltage. Supply voltages from +3 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 range is achieved by the use of a special resitive attenuator at the input, laser trimmed to a very high differential balance. Low initial offset voltage and offset voltage drift are specified, and long-term stability of gain and offset voltage is also provided. Provisions are included for optional low-pass filtering and gain adjustment. An accurate midscale offset feature allows bipolar signals to be amplified.

Supply voltages from +3 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 range is achieved by the use of a special resitive attenuator at the input, laser trimmed to a very high differential balance. Low initial offset voltage and offset voltage drift are specified, and long-term stability of gain and offset voltage is also provided.

Provisions are included for optional low-pass filtering and gain adjustment. An accurate midscale offset feature allows bipolar signals to be amplified.

Features and Benefits
  • 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 kΩ
  • Drives 1kΩ 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
    • Amplifiers
    Power Management
    Automotive
    • Powertrain Body and Chassis
    AD22057 SPICE Macro-Model
    Data Sheets
    Documentnote
    AD22057: Single-Supply Sensor Interface Amplifier Data Sheet (Rev. A)PDF 192 kB
    Application Notes
    Documentnote
    AN-669: Effectively Applying the AD628 Precision Gain Block (Rev. 0)PDF 193 kB
    Technical Books
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD22057R Production8 ld SOICOTH 98-40 to 125C8.155.76N
    AD22057R-REEL Production8 ld SOICREEL 2500-40 to 125C8.155.76N
    AD22057RZ Production8 ld SOICOTH 98-40 to 125C7.235.09Y
    AD22057RZ-RL Production8 ld SOICREEL 2500-40 to 125C7.235.09Y
    Reference Materials
    AD22057: Single-Supply Sensor Interface Amplifier Data Sheet (Rev. A) ad22057
    AD22057N SPICE Macro-Model Rev. A, 11/95 ad22057
    AD22057T SPICE Macro-Model Rev. A, 11/95 ad22057
    AN-669: Effectively Applying the AD628 Precision Gain Block (Rev. 0) ad8350
    AN-669: 有效地使用AD628精密增益模块 (Rev. 0) ad8350
    Auto-Zero Amplifiers ad693
    Current Measurement in Solenoids for Automotive Control Systems ad22057
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