MAX9918

PRODUCTION

-20V to +75V Input Range, Precision Uni-/Bidirectional, Current-Sense Amplifiers

Current-Sense Amplifiers with Input Common Range that Extends Well Below Ground (-20V)

Data Sheet (Rev. 10) Product Selection Table
Part Models
4
1ku List Price
Starting From $1.33
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Part Details

  • Reduce Protective Clamping for High Inductive Kickback Voltage
    • -20V to +75V Input Common-Mode Voltage Range
  • Supports Wide Range of Precision AC and DC Current Sensing Applications
    • Uni- or Bidirectional Current Sensing
    • 0.6% (max) Gain Accuracy Error
    • 400µV (max) Input Offset Voltage
    • 120kHz, -3dB Bandwidth (MAX9919N)
    • Reference Input for Bidirectional OUT
    • Rail-to-Rail Output
  • Saves Board Space
    • 8-Pin SOIC Package
    • Single-Supply Operation (4.5V to 5.5V)
  • AEC-Q100 Qualified (MAX9918ASA/V+, MAX9919FASA/V+, MAX9919NASA/V+, MAX9920ASA/V+ Only)
MAX9918
-20V to +75V Input Range, Precision Uni-/Bidirectional, Current-Sense Amplifiers
MAX9918, MAX9919, MAX9920: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 2

Technical Articles 6

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Hardware Ecosystem

Parts Product Life Cycle Description
Current Sense Amplifiers 1
MAX4080
PRODUCTION 76V, High-Side, Current-Sense Amplifiers with Voltage Output
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Tools & Simulations

SPICE Model 2

Evaluation Kits

MAX9918EVKIT

Evaluation Kit for the MAX9918

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Features and Benefits

  • Wide -20V to +75V Input Range Independent of Supply Voltage
  • Operates Off a Single +5V Supply
  • Unidirectional or Bidirectional Operation
  • Lead(Pb)-Free and RoHS Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX9918 evaluation kit (EV kit) provides a proven design to evaluate the MAX9918 wide input range, precision unidirectional/bidirectional, current-sense amplifier in an 8-pin SO package. The EV kit features Kelvin connections for force and sense at the amplifier inputs and a very precise current-sense resistor with a tolerance of ±0.5%. Various test points are included for additional evaluation.

The MAX9918 EV kit PCB comes with a MAX9918ASA+ installed. Contact the factory for free samples of the pin-compatible MAX9919FASA+, MAX9919NASA+, and MAX9920ASA+ to evaluate these devices.

Applications

  • 4x4 Transmission Control
  • Current Monitoring of Inductive Loads
  • Electronic Throttle Control
  • H-Bridge Motor Current Sensing
  • High- and Low-Side Precision Current Sensing
  • Precision High-Voltage Current Monitoring
  • Solenoid Current Sensing
  • Super-Capacitor Charge/Discharge Monitoring in Hybrid Cars
MAX9918EVKIT
Evaluation Kit for the MAX9918

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