Overview
The TMCS1100A2QDRQ1 is a galvanically isolated Hall-effect current sensor produced by Texas Instruments. It is designed for high-accuracy DC or AC current measurement with excellent linearity and temperature stability. This sensor features a low-drift, temperature-compensated signal chain that ensures less than 1% full-scale error across the device temperature range. The input current flows through an internal 1.8-mΩ conductor, generating a magnetic field measured by an integrated Hall-effect sensor, which simplifies design and minimizes power loss and thermal dissipation. The device is AEC-Q100 qualified for automotive applications and operates over a wide temperature range of –40°C to 125°C.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TMCS1100A2QDRQ1 |
| Sensor Type | Hall Effect |
| Package | 8-SOIC |
| Voltage Supply | 3 V to 5.5 V |
| Operating Temperature | –40°C to 125°C |
| Linearity Error | ±0.05% |
| Frequency Response | Up to 80 kHz |
| Sensitivity | 100 mV/A |
| Output Type | Ratiometric, Voltage |
| Current Supply (Max) | 6 mA |
| Accuracy | ±0.4% |
| Polarization | Bidirectional |
| Number of Channels | 1 |
| Mounting Type | Surface Mount |
| Isolation Rating | 3-kV RMS |
| Lifetime Working Voltage | 600 V |
Key Features
- AEC-Q100 Qualified: Suitable for automotive applications with a temperature grade 1 rating of –40°C to 125°C.
- High Accuracy and Linearity: Total error of ±0.4% typical and ±0.9% maximum, with a linearity error of ±0.05%.
- Galvanic Isolation: 3-kV RMS isolation rating and a 600-V lifetime working voltage, ensuring robust electrical isolation.
- Bidirectional Current Sensing: Capable of measuring both positive and negative currents with an external reference voltage input.
- Wide Operating Voltage Range: Operates from a single 3-V to 5.5-V power supply, eliminating ratiometry errors and improving supply noise rejection.
- High Frequency Response: Signal bandwidth of up to 80 kHz.
- Low Power Consumption: Maximum supply current of 6 mA.
- Compact Surface-Mount Package: Easy integration into various applications with a compact 8-SOIC package.
- Functional Safety-Capable: Designed with safety features to meet stringent safety standards.
Applications
- Motor Control: Precise current measurement for motor control systems.
- Power Supply Monitoring: Monitoring current in power supply units for reliability and efficiency.
- Battery Management: Accurate current sensing in battery management systems.
- Industrial Automation: Used in various industrial automation applications requiring precise current measurement.
- Renewable Energy Systems: Suitable for current measurement in renewable energy systems such as solar and wind power.
Q & A
- What is the operating temperature range of the TMCS1100A2QDRQ1?
The operating temperature range is –40°C to 125°C.
- What is the sensitivity of the TMCS1100A2QDRQ1?
The sensitivity is 100 mV/A.
- What is the maximum supply current of the TMCS1100A2QDRQ1?
The maximum supply current is 6 mA.
- Is the TMCS1100A2QDRQ1 suitable for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the isolation rating of the TMCS1100A2QDRQ1?
The isolation rating is 3-kV RMS, with a 600-V lifetime working voltage.
- Can the TMCS1100A2QDRQ1 measure both AC and DC currents?
Yes, it is capable of measuring both AC and DC currents.
- What is the frequency response of the TMCS1100A2QDRQ1?
The signal bandwidth is up to 80 kHz.
- How does the TMCS1100A2QDRQ1 handle bidirectional current sensing?
It uses an external reference voltage input to enable bidirectional or unidirectional current sensing.
- What are some common applications of the TMCS1100A2QDRQ1?
Common applications include motor control, power supply monitoring, battery management, industrial automation, and renewable energy systems.
- Is the TMCS1100A2QDRQ1 RoHS compliant?
Yes, it is RoHS3 compliant.
