Overview
The TMCS1108A4UQDR is a high-performance, galvanically isolated Hall-effect current sensor produced by Texas Instruments. This device is designed for accurate DC or AC current measurement, offering excellent linearity and temperature stability. It features a low-drift, temperature-compensated signal chain that ensures a full-scale error of less than 3% across the device temperature range of –40°C to 125°C. The TMCS1108A4UQDR is ideal for applications requiring robust isolation and high accuracy in current sensing.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Range | 3 V to 5.5 V | V |
| Signal Bandwidth | 80 kHz | kHz |
| Galvanic Isolation | 100 V | V |
| Total Error | ±1% typical, ±3% maximum | % |
| Sensitivity Error | ±0.9% | % |
| Offset Error | 40 mA | mA |
| Offset Drift | 0.2 mA/°C | mA/°C |
| Linearity Error | 0.5% | % |
| Sensitivity Option (TMCS1108A4UQDR) | 400 mV/A | mV/A |
| Maximum Operating Temperature | 125°C | °C |
| Minimum Operating Temperature | –40°C | °C |
| Package Type | SOIC (8 pins) | |
| Mounting Feature | Surface Mount |
Key Features
- High Accuracy and Linearity: The TMCS1108A4UQDR offers a total error of ±1% typical and ±3% maximum across the temperature range of –40°C to 125°C, ensuring high accuracy in current measurements.
- Multiple Sensitivity Options: Available in various sensitivity options (50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A), allowing for flexibility in different application requirements.
- Bidirectional and Unidirectional Sensing: Supports both bidirectional and unidirectional current sensing, making it versatile for various applications.
- Robust Galvanic Isolation: Provides 100-V functional isolation between the current path and circuitry, ensuring safety and reliability.
- Wide Operating Supply Range: Operates from a single 3-V to 5.5-V power supply, enhancing supply noise rejection and eliminating ratiometry errors.
- High Signal Bandwidth: Features a signal bandwidth of 80 kHz, suitable for high-frequency applications.
- Low Drift and Temperature Compensation: Includes a low-drift, temperature-compensated signal chain to maintain accuracy across the operating temperature range.
Applications
- Motor and Load Control: Ideal for monitoring and controlling motors and loads in various industrial and automotive applications.
- Inverter and H-Bridge Current Measurements: Suitable for measuring currents in inverter and H-bridge configurations.
- Power Factor Correction: Used in power factor correction circuits to improve power efficiency.
- Overcurrent Protection: Provides accurate current measurements for overcurrent protection in power systems.
- DC and AC Power Monitoring: Effective for monitoring both DC and AC power in various electrical systems.
- Automotive, Aerospace, and Industrial Automation: Widely used in these sectors due to its high accuracy, robust isolation, and reliability.
Q & A
- What is the operating temperature range of the TMCS1108A4UQDR?
The operating temperature range is –40°C to 125°C.
- What is the signal bandwidth of the TMCS1108A4UQDR?
The signal bandwidth is 80 kHz.
- What is the galvanic isolation voltage of the TMCS1108A4UQDR?
The galvanic isolation voltage is 100 V.
- What are the available sensitivity options for the TMCS1108 series?
The available sensitivity options are 50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A.
- Does the TMCS1108A4UQDR support bidirectional current sensing?
Yes, it supports both bidirectional and unidirectional current sensing.
- What is the typical total error of the TMCS1108A4UQDR?
The typical total error is ±1%.
- What is the maximum supply current of the TMCS1108A4UQDR?
The maximum supply current is 6 mA.
- What type of package does the TMCS1108A4UQDR come in?
The TMCS1108A4UQDR comes in an SOIC (8 pins) package.
- What are some common applications of the TMCS1108A4UQDR?
Common applications include motor and load control, inverter and H-bridge current measurements, power factor correction, overcurrent protection, and DC and AC power monitoring.
- Is the TMCS1108A4UQDR suitable for high-frequency applications?
Yes, it is suitable due to its high signal bandwidth of 80 kHz.
