INA250 - 36V Low-/High-Side, Bi-Directional, Current Sense Amp w/Precision Integrated Shunt Resistor

Updated : 2020-01-09 14:22:48
Description

The INA250 is a voltage-output, current-sensing amplifier family that integrates an internal shunt resistor to enable high-accuracy current measurements at common-mode voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device is a bidirectional, low- or high-side current-shunt monitor that allows an external reference to be used to measure current flowing in both directions through the internal current-sensing resistor sensor. The integration of the precision current-sensing resistor provides calibration equivalent measurement accuracy with ultra-low temperature drift performance and ensures an optimized Kelvin layout for the sensing resistor is always obtained.

The INA250 family is available in four output voltage scales: 200 mV/A, 500 mV/A, 800 mV/A, and 2 V/A. This device is fully tested and specified for continuous currents up to 10 amps at the maximum temperature of 125°C. The INA250 operates from a single 2.7-V to 36-V supply and draws a maximum of 300 µA of supply current. All INA250 gain versions are specified over the extended operating temperature range (–40°C to 125°C), and are available in a TSSOP-16 package.

Products containing the "INA250" keyword are: INA250-Q1 , INA250A1PW , INA250A1PW , INA250A1PWR , INA250A1PWR , INA250A1QPWRQ1 , INA250A1QPWRQ1 , INA250A2PW , INA250A2PW , INA250A2PWR , INA250A2PWR , INA250A2QPWRQ1 , INA250A2QPWRQ1 , INA250A3PW , INA250A3PW , INA250A3PWR , INA250A3QPWRQ1 , INA250A3QPWRQ1 , INA250A4PW , INA250A4PW
Features

  • Precision Integrated Shunt Resistor:
    • Shunt Resistor: 2 mΩ
    • Shunt Resistor Tolerance: 0.1% (Max)
    • 15 A Continuous from –40°C to 85°C
    • 0°C to 125°C Temperature Coefficient:
      10 ppm/°C
  • High Accuracy:
    • Gain Error (Shunt and Amplifier): 0.3% (Max)
    • Offset Current: 50 mA (Max, INA250A2)
  • Four Available Gains:
    • INA250A1: 200 mV/A
    • INA250A2: 500 mV/A
    • INA250A3: 800 mV/A
    • INA250A4: 2 V/A
  • Wide Common-Mode Range: –0.1 V to 36 V
  • Specified Operating Temperature: –40°C to 125°C

Parametrics
StatusACTIVE
SubFamilyCurrent sense amplifiers analog output
Common mode voltage36
RatingCatalog
FeaturesBi-directional^Integrated Shunt^Low-side Capable
Supply Voltage2.7
Input offset (+/-)100mA^50mA^30mA^20mA
Input offset drift (+/-)250 µA/C
Gain2000mV/A^200mV/A^500mV/A^800mV/A
Gain error0.3
CMRR100
Bandwidth50
Iq0.35
Approx. price1.25 | 1ku
Operating temperature range-40 to 125
Package GroupTSSOP|16
Package size: mm2:W x L (PKG)[pf]16TSSOP[/pf]: 22 mm2: 4.4 x 5 (TSSOP|16)