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SGM840J

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-4V to 80V, Bidirectional, Ultra-Precision Current-Sense Amplifier with High PWM Rejection

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The SGM840J device is a bidirectional, fixed gain, voltage-output, current-sense amplifier which features high PWM rejection and wide common-mode voltage range from -4V to 80V. 

The high PWM rejection suppresses large common-mode transients (ΔV/Δt) on the output signal, which is particularly relevant for applications utilizing pulse width modulation (PWM), such as motor driver and solenoid control systems. The negative common-mode voltage capability allows the device to function even when the voltage is below ground, which is useful in typical applications like the flyback period of a solenoid. 

These characteristics make accurate current measurement without large transients and related recovery disturbances on the output voltage. 

The device is powered from a single 2.7V to 5.5V supply, and draws 1mA (TYP) supply current. The gain of SGM840J is 10V/V. The low offset in the zero-drift architecture enables highly accurate current sensing, even with very small voltage drops across the shunt as low as 10mV full-scale. 

The SGM840J is available in Green MSOP-8 and SOIC-8 packages. It operates in the temperature range of -40℃ to +125℃.

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FEATURES
  • High PWM Rejection
  • Excellent CMRR:
    • 130dB (TYP) DC CMRR
    • 80dB (TYP) AC CMRR at 50kHz
  • Wide Common-Mode Range: -4V to 80V
  • Gain Error:
    • +25℃: ±0.35% (MAX)
    • -40℃ to +125℃: ±2% (MAX)
  • Offset:
    • +25℃: ±100µV (MAX)
    • -40℃ to +125℃: ±250µV (MAX)
  • Available Gain: 10V/V
  • Available in Green MSOP-8 and SOIC-8 Packages
APPLICATIONS

Motor Controls
Solenoid and Valve Controls
Power Management
Actuator Controls
Pressure Regulators
Telecom Equipment

Ordering Information
Part Number
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM840JXMS8G/TR
Active
MSOP-8
8
YES
YESYESYESMSL1
40℃ to +125℃
View
View
SGM840JXS8G/TR
Active
SOIC-8
8
YES
YESYESYESMSL1
40℃ to +125℃
View
View

* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.

** The lead time provided is for reference purposes only and is subject to change based on different circumstances.

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SG Micro Corp (SGMICRO) specializes in the development, manufacturing and sales of high-performance and high-reliability integrated circuits for analog signal conditioning and system power management, offering innovative solutions to a broad range of applications in the industrial, automotive, communication, computing, consumer electronics, and medical equipment markets.
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