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Maxim MAX40056 bidirectional current sense amplifier

The MAX40056 is a bidirectional current-sense amplifier with an input common-mode range that extends from -0.1 V to +65 V

Maxim MAX40056 product image

The MAX40056 is a bidirectional current-sense amplifier with an input common-mode range that extends from -0.1 V to +65 V together with protection against negative inductive kickback voltages to -5 V. This CSA is well-suited for phase current monitoring of inductive loads, such as motors and solenoids, where pulse width modulation is used to control the drive voltage and current. The MAX40056 uses an improved technique to help reject common-mode input PWM edges with slew rates up to and beyond ±500 V/µs.


Key features

  • Fast, 500 ns PWM Edge recovery from 500 V/µs PWM Edges
  • 60 dB AC CMRR Rejection at 50 V, ±500 V/µs PWM Edges
  • 140 dB DC CMRR Rejection
  • -0.1 V to +65 V Input Voltage Range

 

Additional features:

  • Fast, 500 ns PWM Edge recovery from 500 V/µs PWM Edges
  • 60 dB AC CMRR Rejection at 50 V, ±500 V/µs PWM Edges
  • 140 dB DC CMRR Rejection
  • -0.1 V to +65 V Input Voltage Range
  • -5 V to +70 V Protective Immunity
  • 300 kHz, -3 dB Bandwidth
  • Multiple Gain Options; 10 V/V, 20 V/V, 50 V/V
  • Internal, 1 % Reference for Bidirectional Offset
  • 5 µV (Typ) Input Offset Voltage
  • Rail-to-Rail Output
  • 2.02 mm x 1.4 mm WLP-8 and 8-pin μMAX
  • -40 °C to +125 °C Temperature Range


Applications

  • ​Automotive
  • Battery Stack Monitors
  • Current Monitoring of Inductive Loads
  • PWM H-Bridge Motor In-line/In-phase/Winding Current Sensing
  • Solenoid Current Sensing


Available tools

Evaluation Kit

https://www.maximintegrated.com/en/products/analog/amplifiers/MAX40056T.html/tb_tab2

Video:

https://www.maximintegrated.com/en/design/videos.html/vd_5989779179001#popupmodal

 

 

Maxim MAX40056 bidirectional current sense amplifier | EBV Elektronik

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