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INA240A1DR

Mfr. #:
INA240A1DR
Mfr.:
Texas Instruments
Product Type:
Current Sense Amplifier
Series:
INA240
Package / Case:
8-SOIC
Description:
20-V/V bidirectional current sense amplifier with enhanced PWM rejection.

Product Attributes

AttributeValue
Gain20 V/V
Input Offset Voltage±25 µV maximum
Supply Voltage2.7 to 5.5 V
Common-Mode Voltage-4 to 80 V
Gain Error0.20% maximum
PWM RejectionEnhanced
Operating Ambient Temperature-40 to 125 °C
Package Details8-SOIC (D)

Product Details

INA240A1DR is a Texas Instruments 20-V/V bidirectional current-sense amplifier in an eight-pin SOIC package for measuring the voltage across a shunt resistor.

Its -4-to-80-V common-mode range permits the shunt to sit on a high-voltage rail and also tolerate brief below-ground excursions, which matter during motor or solenoid flyback.

Enhanced PWM rejection suppresses common-mode switching transients before they appear as output ripple, so a controller can sample phase current while the load is being pulse-width modulated.

A maximum 25-microvolt input offset and 0.20-percent gain error reduce measurement uncertainty when the useful shunt drop is small rather than forcing a larger, hotter resistor.

The 2.7-to-5.5-V supply range and -40-to-125-degree-C ambient specification set the interface and temperature limits for the analog measurement path.

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