Overview
The TMCS1100A4QDR from Texas Instruments is a precision, galvanically isolated Hall-effect current sensor designed for high-accuracy DC or AC current measurements. This device is AEC-Q100 qualified, making it suitable for automotive applications, and features a temperature range of –40°C to 125°C. It offers excellent linearity and temperature stability, with a low-drift, temperature-compensated signal chain that ensures less than 1% full-scale error across the device temperature range. The TMCS1100A4QDR is integrated with electrical shielding, providing excellent common-mode rejection and transient immunity.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | –40°C to 125°C | °C |
| Total Error | ±0.4% (typical), ±0.9% (maximum), –40°C to 85°C | % |
| Sensitivity Error | ±0.4% | % |
| Offset Error | 7 mA | mA |
| Offset Drift | 0.04 mA/°C | mA/°C |
| Linearity Error | 0.05% | % |
| Lifetime and Environmental Drift | <±0.5% | % |
| Isolation Rating | 3 kV RMS | kV RMS |
| Lifetime Working Voltage | 600 V | V |
| Operating Supply Range | 3 V to 5.5 V | V |
| Signal Bandwidth | 80 kHz | kHz |
| Sensitivity Option (TMCS1100A4) | 400 mV/A | mV/A |
| Input Conductor Resistance | 1.8 mΩ | mΩ |
| Maximum Supply Current | 6 mA | mA |
Key Features
- AEC-Q100 qualified for automotive applications
- Temperature Grade 1: –40°C to 125°C
- Functional Safety-Capable
- Bidirectional and unidirectional current sensing
- External reference voltage (VREF) for variable zero-current output voltage
- Robust 600-V lifetime working voltage and 3-kV RMS isolation rating
- Multiple sensitivity options: 50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A
- Safety-related certifications: UL 1577 Component Recognition Program, IEC/CB 62368-1
- Integrated electrical shielding for excellent common-mode rejection and transient immunity
- Low conductor resistance minimizes power loss and thermal dissipation
Applications
- Motor and load control
- Inverter and H-bridge current measurements
- Power factor correction
- Overcurrent protection
- DC and AC power monitoring
Q & A
- What is the operating temperature range of the TMCS1100A4QDR?
The operating temperature range is –40°C to 125°C.
- What is the total error of the TMCS1100A4QDR?
The total error is ±0.4% typical and ±0.9% maximum from –40°C to 85°C.
- What are the sensitivity options available for the TMCS1100-Q1 series?
The sensitivity options are 50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A.
- What is the isolation rating of the TMCS1100A4QDR?
The isolation rating is 3 kV RMS.
- What is the lifetime working voltage of the TMCS1100A4QDR?
The lifetime working voltage is 600 V.
- What is the signal bandwidth of the TMCS1100A4QDR?
The signal bandwidth is 80 kHz.
- Can the TMCS1100A4QDR be used for both bidirectional and unidirectional current sensing?
Yes, it can be used for both bidirectional and unidirectional current sensing using the VREF input pin.
- What are the safety-related certifications for the TMCS1100A4QDR?
The device is certified under UL 1577 Component Recognition Program and IEC/CB 62368-1.
- What is the maximum supply current of the TMCS1100A4QDR?
The maximum supply current is 6 mA.
- What is the input conductor resistance of the TMCS1100A4QDR?
The input conductor resistance is 1.8 mΩ.
