Overview
The TMCS1101A4UQDR, produced by Texas Instruments, is a galvanically isolated Hall-effect current sensor designed for high-accuracy DC or AC current measurements. This device features excellent linearity and temperature stability, making it suitable for a wide range of applications. The TMCS1101A4UQDR operates with a low-drift, temperature-compensated signal chain, ensuring a total error of less than 1.5% across the device temperature range of –40°C to 125°C. It integrates an internal 1.8-mΩ conductor that generates a magnetic field measured by an integrated Hall-effect sensor, eliminating the need for external concentrators and minimizing power loss and thermal dissipation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Sensitivity | 400 mV/A | mV/A |
| Total Error | ±0.51% (typical), ±1.15% (maximum) | % |
| Sensitivity Error | ±0.5% | % |
| Offset Error | ±6 mA to ±52.5 mA | mA |
| Offset Drift | ±0.04 mA/°C | mA/°C |
| Linearity Error | ±0.05% | % |
| Lifetime and Environmental Drift | <±0.5% | % |
| Isolation Rating | 3 kVRMS | kVRMS |
| Lifetime Working Voltage | 600 V | V |
| Operating Supply Range | 3 V to 5.5 V | V |
| Signal Bandwidth | 80 kHz | kHz |
| Input Conductor Resistance | 1.8 mΩ | mΩ |
| Maximum Power Dissipation | 673 mW (both sides) | mW |
| Operating Temperature Range | –40°C to 125°C | °C |
Key Features
- Bidirectional and unidirectional current sensing capabilities.
- Zero drift internal reference for improved accuracy.
- Galvanic isolation with 3-kVRMS basic isolation and 600-V lifetime working voltage.
- Integrated electrical shielding for excellent common-mode rejection and transient immunity.
- Fixed sensitivity options (50 mV/A, 100 mV/A, 200 mV/A, 400 mV/A) to eliminate ratiometry errors and improve supply noise rejection.
- Low conductor resistance (1.8 mΩ) to minimize power loss and thermal dissipation.
- Safety-related certifications including UL 1577 Component Recognition Program and IEC/CB 62368-1.
- Maximum supply current of 6 mA.
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 sensitivity of the TMCS1101A4UQDR?
The sensitivity of the TMCS1101A4UQDR is 400 mV/A.
- What is the total error range of the TMCS1101A4UQDR?
The total error range is ±0.51% (typical) and ±1.15% (maximum) across the device temperature range.
- What is the operating supply range of the TMCS1101A4UQDR?
The operating supply range is from 3 V to 5.5 V.
- What is the signal bandwidth of the TMCS1101A4UQDR?
The signal bandwidth is 80 kHz.
- Does the TMCS1101A4UQDR support bidirectional current sensing?
- What is the isolation rating of the TMCS1101A4UQDR?
The isolation rating is 3 kVRMS with a 600-V lifetime working voltage.
- What are the safety certifications for the TMCS1101A4UQDR?
The device has certifications including UL 1577 Component Recognition Program and IEC/CB 62368-1.
- What is the maximum power dissipation of the TMCS1101A4UQDR?
The maximum power dissipation is 673 mW (both sides).
- What is the operating temperature range of the TMCS1101A4UQDR?
The operating temperature range is from –40°C to 125°C.
- What are some common applications for the TMCS1101A4UQDR?
