Overview

Features and Benefits

  • Ideal for current shunt applications
  • EMI filters included
  • 1 μV/°C maximum input offset drift
  • High common-mode voltage range
    −4 V to +65 V operating (5V supply)
    −4 V to +35V operating (3.3V supply)
    −25 V to +75 V survival
  • Gain = 20 V/V
  • 3.3 V to 5.5 V supply range
  • Wide operating temperature range: −40°C to +125°C
  • Bidirectional current monitoring
  • <500 nV/°C typical offset drift
  • <10 ppm/°C typical gain drift
  • >90 dB CMRR dc to 10 kHz
  • Qualified for automotive applications

Product Details

The AD8207 is a single-supply difference amplifier ideal for amplifying small differential voltages in the presence of large common-mode voltage. The operating input common-mode voltage range extends from −4 V to +65 V with a 5 V supply. The AD8207 works with a single-supply voltage of 3.3 V to 5 V, and is ideally suited to withstand large input PWM common-mode voltages, typical in solenoid and motor control applications.

The AD8207 is available in an 8-lead SOIC package. Excellent dc performance over temperature keeps errors in the mea-surement loop to a minimum. Offset drift is typically less than 500 nV/°C, and gain drift is typically below 10 ppm/°C.

The AD8207 is ideal for bidirectional current sensing applications. It features two reference pins,VREF1 and VREF2, that allow the user to easily offset the output of the device to any voltage within the supply range. With VREF1 attached to the V+ pin and VREF2 attached to the GND pin, the output is set at half scale. Attaching both pins to GND causes the output to be unipolar, starting near ground. Attaching both pins to V+ causes the output to be unipolar starting near V+. Other output offsets are achieved by applying an external low impedance voltage to the VREF1 and VREF2 pins.

Applications
  • High-side current sensing in
    Motor control
    Solenoid control
    Diesel-injection control
    Engine management
    Suspension control
    Vehicle dynamic control
    DC-to-dc converters

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations

SPICE Models

Design Tools

ADIsimPE Linear and Mixed-Signal Circuit Simulator – Personal Edition

ADIsimPE, which is powered by SIMetrix/SIMPLIS, is a circuit simulation suite optimized for the design and development of analog and mixed signal circuits. SIMetrix mode is ideal for the simulation of general non-switching circuits. It provides full Pspice compatibility for use with industry-standard SPICE models. SIMPLIS (SIMulation Piecewise-Linear System) mode simulates the operation of switching circuits with vastly improved robustness, speed, and accuracy compared to standard SPICE. It is particularly useful for switching power supply, PLLs, and ADC/DAC applications.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Discussions

AD8207 Discussions

RE: Input Impedance of AD8207, purely resistive?
15 week(s) ago in Differential Amplifiers
RE: AD8207 or AD8210
15 week(s) ago in Amplifiers
RE: (AD8207)Can you tell us Rja and Rjc for AD8207?
23 week(s) ago in Differential Amplifiers
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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.