SparkFun INA237 Qwiic Current Sensor

Sparkfun ElectronicsSKU: RB-Spa-2725
Manufacturer #: SEN-31437

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Sale price £9.18

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Description

  • SparkFun INA237 Qwiic Current Sensor
  • Facilitates precise I2C current and power monitoring
  • Incorporates 16-bit delta-sigma ADC for accuracy
  • Monitors currents with ±50 µV offset voltage max
  • Features alert response time of 75 µS
  • Supports high-speed 2.94MHz I2C interface

The SparkFun INA237 Qwiic Current Sensor facilitates precise monitoring of DC current and power via I2C. This breakout board incorporates the INA237 digital power monitor from Texas Instruments, enabling the measurement of current, bus voltage, temperature, and power for an in-line DC input through a 16-bit delta-sigma analog-to-digital converter.

  • 1x SparkFun INA237 Qwiic Current Sensor
  • 2x Qwiic Connector
  • 1x 3-Pin Screw Terminal
  • 1x 15 mΩ Shunt Resistor Pre-populated on the Board
  • 16-bit Delta-Sigma ADC
  • Current monitoring accuracy: Offset voltage: ±50 µV (max), Offset drift: ±0.02 µV/°C (max), Gain error: ±0.3% (max), Gain error drift: ±50 ppm/°C (max), Common mode rejection: 120 dB (max)
  • Power monitoring accuracy: 1.6% full scale, -40°C to +125°C (max)
  • Alert response time: 75 µs
  • Common mode range: -0.3 V to +85 V
  • Bus voltage sensing input: 0 V to 85 V
  • Shunt full-scale differential range: ±163.84 mV / ±40.96 mV
  • 2.94 MHz high-speed I2C interface
  • Four available I2C addresses (selected by solder jumpers)
  • Default address: 0x40
  • Supply voltage: 2.7 V to 5 V
  • Operational current: 640 µA (typical)
  • Shutdown current: 5 µA (max)
  • Maximum power rating: 85 V/10 A
  • IN± shunt resistor: 10 mΩ (default)
  • Optional external shunt resistor connections
  • VBUS isolated from IN± by default
  • 0.1"-spaced through-hole header
  • Power (VCC/GND), I2C (SDA/SCL), and alert
  • Red power LED

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