TI TMCS1101A3BQDR

TMCS1101 is a galvanically isolated Hall-effect current sensor capable of measuring DC or AC current with high accuracy, excellent linearity, and temperature stability. A low-drift, temperature-compensated signal chain achieves <1.5% full-scale error over the device's temperature range. Input current flows through an internal 1.8mΩ conductor, whose resulting magnetic field is measured by an integrated Hall-effect sensor. This structure eliminates the need for an external concentrator and simplifies design. The low conductor resistance minimizes power loss and heat dissipation. Inherent galvanic isolation provides a 600V lifetime working voltage and 3kV_RMS basic isolation between the current path and circuitry. An integrated electrical shield delivers excellent common-mode rejection and transient immunity. The output voltage is proportional to input current, with four sensitivity options available. Fixed sensitivity allows the TMCS1101 to operate from a single 3V to 5.5V supply, eliminating ratiometric errors and improving power supply noise rejection. Current polarity is considered positive when current flows into the positive input pin. Both unidirectional and bidirectional sensing variants are available. The TMCS1101 draws a maximum supply current of 6mA and is rated for an operating temperature range of -40°C to +125°C across all sensitivity options. Safety certifications: UL 1577 component recognition program, IEC/CB 62368-1

• Overall error: typical ±0.51%, maximum ±1.15%, -40℃ to 85℃
• Sensitivity error: ±0.5%
• Offset voltage error: 9mA
• Temperature drift: 0.04mA/℃
• Linearity error: 0.05%

• Motor and load control
• Inverter and H-bridge current measurement
• Power factor correction
• Overcurrent protection
• DC and AC power monitoring