TMCS1100A2QDR ACTIVE

Features for the TMCS1100

• Total error: ±0.4% typical, ±0.9% maximum, –40ºC to 85ºC
  • Sensitivity error: ±0.4%
  • Offset error: 7 mA
  • Offset drift: 0.04 mA/ºC
  • Linearityerror: 0.05%
• Lifetime and environmental drift: <±0.5%
• 3-kV_RMS isolation rating
• Robust 600-V lifetime working voltage
• Bidirectional and unidirectional current sensing
• External reference voltage
• Operating supply range: 3 V to 5.5 V
• Signal bandwidth: 80 kHz
• Multiple sensitivity options:
  • TMCS1100A1: 50mV/A
  • TMCS1100A2: 100mV/A
  • TMCS1100A3: 200mV/A
  • TMCS1100A4: 400mV/A
• Safety related certifications (planned)
  • UL 1577 Component Recognition Program
  • IEC/CB62368-1

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Description for the TMCS1100

The TMCS1100 is a galvanically isolated Hall-effect current sensorcapable of dc or ac current measurement with high accuracy, excellent linearity, and temperaturestability. A low-drift, temperature-compensated signal chain provides < 1% full-scale error across the devicetemperature range.

The input current flows through an internal 1.8-mΩ conductor that generates a magneticfield measured by an integrated Hall-effect sensor. This structure eliminates externalconcentrators and simplifies design. Low conductor resistance minimizes power loss and thermaldissipation. Inherent galvanic insulation provides a 600-V lifetime working voltage and3-kV_RMS basic isolation between the current path and circuitry. Integratedelectrical shielding enables excellent common-mode rejection and transient immunity.

The output voltage is proportional to the input current with four sensitivity options.Fixed sensitivity allows the TMCS1100 to operate from a single 3-V to 5.5-V powersupply, eliminates ratiometry errors, and improves supply noise rejection. The current polarity isconsidered positive when flowing into the positive input pin. The VREF inputpin provides a variable zero-current output voltage, enabling bidirectional or unidirectionalcurrent sensing.

The TMCS1100 draws a maximum supply current of 6 mA, and allsensitivity options are specified over the operating temperature range of –40°C to +125°C.