TMCS1100
±600V basic isolation, 20Arms 80kHz Hall-effect current sensor with external reference
TMCS1100
- Total error: ±0.4% typical, ±0.9% maximum, –40°C to 85°C
- Sensitivity error: ±0.4%
- Offset error: 7mA
- Offset drift: 0.04mA/°C
- Linearity error: 0.05%
- Lifetime and environmental drift: <±0.5%
- 3kVRMS isolation rating
- Robust 600V lifetime working voltage
- Bidirectional and unidirectional current sensing
- External reference voltage
- Operating supply range: 3V to 5.5V
- Signal bandwidth: 80kHz
- Multiple sensitivity options:
- TMCS1100A1: 50mV/A
- TMCS1100A2: 100mV/A
- TMCS1100A3: 200mV/A
- TMCS1100A4: 400mV/A
- Safety related certifications
- UL 1577 Component Recognition Program
- IEC/CB 62368-1
The TMCS1100 is a galvanically isolated Hall-effect current sensor capable of DC or AC current measurement with high accuracy, excellent linearity, and temperature stability. A low-drift, temperature-compensated signal chain provides < 1% full-scale error across the device temperature range.
The input current flows through an internal 1.8mΩ conductor that generates a magnetic field measured by an integrated Hall-effect sensor. This structure eliminates external concentrators and simplifies design. Low conductor resistance minimizes power loss and thermal dissipation. Inherent galvanic insulation provides a 600V lifetime working voltage and 3kVRMS basic isolation between the current path and circuitry. Integrated electrical 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 3V to 5.5V power supply, eliminates ratiometry errors, and improves supply noise rejection. The current polarity is considered positive when flowing into the positive input pin. The VREF input pin provides a variable zero-current output voltage, enabling bidirectional or unidirectional current sensing.
The TMCS1100 draws a maximum supply current of 6mA, and all sensitivity options are specified over the operating temperature range of –40°C to +125°C.


TMCS1100 won a gold Leadership in Engineering Achievement Program (LEAP) Award in the Switches & Sensors category.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
TMCS1100EVM — TMCS1100 isolated Hall-effect current sensing evaluation module
TMCS1100 TINA-TI Reference Design (Rev. A)
TINA-TI — SPICE-based analog simulation program
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Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
SOIC (D) | 8 | Ultra Librarian |
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Video series
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CS-MAGNETIC-ERROR-TOOL-CALC — Hall-Effect Current Sensor Comparison and Error Tool
Hall-effect current sensors
Release Information
First release