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Diodes Incorporated ZXCT199Q Bidirectional Current Monitors

Diodes Incorporated ZXCT199Q Bidirectional Current Monitors are automotive AEC-Q qualified and developed to handle very low sense voltages, allowing the use of very low-value sense resistors to monitor large currents. The low offset voltage and zero-drift architecture enable current sensing with maximum drops spanning the shunt to as low as 10mV full-scale. The ZXCT199Q series has three fixed voltage gain options: 50V/V, 100V/V, and 200V/V. The device measures the voltage over shunts at common-mode voltages from -0.1V to 26V, separate from the supply voltage.

The Diodes Incorporated ZXCT199Q Monitors OUT pin has a voltage proportional to the load current, which can then be processed with an ADC. These devices are created with zero-drift architecture and manufactured utilizing post-trim technology to accomplish low offset voltage, low gain drift, and low gain error over the entire temperature range for precise measurement.

The ZXCT199Q performs from a 2.7V to 26V power supply with a maximum supply current of 100μA. All versions are available in the SOT363 package and have a temperature range of -40°C to +125°C.

Features

  • Supply voltage range of 2.7V to 26V
  • Wide common-mode range of -0.1V to 26V
  • Gain error (maximum over temperature range)
    • A and B versions of ±1.0%
    • C version of ±0.8%
  • Choices of gains:
    • ZXCT 199QX1 of 50V/V
    • ZXCT 199QX2 of 100V/V
    • ZXCT 199QX3 of 200V/V
  • Rail-to-Rail output capability
  • Low quiescent current of 100μA (max)
  • Low offset voltage
    • A version max ±150μV
    • B version max ±100μV
    • C version max ±80μV
  • Zero-drift performance of 0.5μV/°C (max)
  • 6-Pin SOT363 package
  • Totally lead-free and fully RoHS compliant
  • Halogen and antimony-free, “Green” device
  • AEC-Q100 qualified

Applications

  • Vehicle valve controls
  • Vehicle body control systems
  • Vehicle motor controls, e-pumps
  • Vehicle e-compressors
  • Vehicle ADAS
  • EV OBC, BMS, ESP, high voltage DC/DC
  • Wireless charging
  • Current sensing (high-side/low-side)
  • Battery charging and discharging

Associated Products

Diodes Incorporated ZXCT199 Bidirectional Current Monitors

Single-stage instrumentation amplifiers are built to measure very small sense voltages accurately.

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Typical Application

Application Circuit Diagram - Diodes Incorporated ZXCT199Q Bidirectional Current Monitors
發佈日期: 2024-06-25 | 更新日期: 2024-07-02