سنسور و مبدل سنسور جریان

Product Attributes

Introduction

The TMCS1107 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 enables <3% full-scale error over the device's operating temperature range.

Input current flows through an internal 1.8mΩ conductor, whose resulting magnetic field is measured by an integrated Hall-effect sensor. This architecture eliminates the need for an external concentrator and simplifies design. The low conductor resistance minimizes power loss and heat dissipation. The inherent plated isolation provides 420V lifetime working voltage and 3kV_RMS basic isolation between the current path and circuitry. Integrated electrical shielding delivers excellent common-mode rejection and transient immunity.

The output voltage is proportional to the input current, with multiple sensitivity options available. Fixed sensitivity allows the TMCS1107 to operate from a single 3V to 5.5V supply, eliminating ratiometric error and improving power supply noise rejection. Current polarity is defined as positive when current flows into the positive input pin. Both unidirectional and bidirectional sensing variants are available.

The TMCS1107 draws a maximum supply current of 6mA, and all sensitivity options are rated for an operating temperature range of -40°C to +125°C.

Features

• Total error: typical ±1%, maximum ±3%, -40℃ to 125℃
• Sensitivity error: ±0.9%
• Offset voltage error: 40mA, temperature drift 0.2mA/℃
• Linearity error: 0.5%
• Multiple sensitivity options
• Zero-drift internal reference
• Bidirectional and unidirectional current sensing
• Operating supply voltage range: 3V to 5.5V
• Signal bandwidth: 80kHz
• 3kVRMS isolation rating
• Robust 420V lifetime working voltage
• Safety-related certifications: UL 1577 Component Recognition Program, IEC/CB 62368-1

Applications

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