Overview
The TMP461AIRUNR-S is a high-accuracy remote and local temperature sensor developed by Texas Instruments. This device is designed to provide precise temperature measurements in both local and remote locations, making it ideal for various applications requiring robust thermal monitoring. The TMP461AIRUNR-S features a built-in local temperature sensor and supports the use of low-cost discrete NPN or PNP transistors, or substrate thermal transistors or diodes as remote sensors. It operates over a supply voltage range of 1.7 V to 3.6 V and a temperature range of –40°C to 125°C, ensuring versatility in different environments.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Output Type | Digital | Configuration | Local, Remote |
| Accuracy | ±0.75°C (Remote), ±1°C (Local) | Supply Voltage - Min | 1.7 V |
| Supply Voltage - Max | 3.6 V | Interface Type | 2-Wire, Serial, SMBus |
| Resolution | 12 bit (0.0625°C) | Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +125°C | Shutdown | Shutdown |
| Mounting Style | SMD/SMT | Operating Supply Current | 400 µA |
| Pd - Power Dissipation | 531 µW | Package | 10-Lead WQFN |
Key Features
- High-Accuracy Temperature Measurement: ±0.75°C for remote diode and ±1°C for local sensor.
- Series Resistance Cancellation: Enhances accuracy by compensating for series resistance in the measurement path.
- η-Factor and Offset Correction: Programmable nonideality factor and offset correction for improved accuracy.
- Programmable Digital Filter: Reduces noise and improves signal quality.
- Diode Fault Detection: Detects faults in the remote diode sensors.
- Two-Wire and SMBus Serial Interface: Compatible with SMBus communication protocol and pin-programmable address.
- Low Power Consumption: 35 µA operating current at 1 SPS and 3 µA shutdown current.
Applications
The TMP461AIRUNR-S is ideal for multi-location, high-accuracy temperature measurements in various industries, including:
- Communication systems
- Computing and data centers
- Instrumentation and industrial control
- Automotive and aerospace applications requiring precise thermal monitoring
Q & A
- What is the accuracy of the TMP461AIRUNR-S temperature sensor?
The TMP461AIRUNR-S has an accuracy of ±0.75°C for the remote diode and ±1°C for the local sensor.
- What is the operating voltage range of the TMP461AIRUNR-S?
The device operates over a supply voltage range of 1.7 V to 3.6 V.
- What is the temperature measurement resolution of the TMP461AIRUNR-S?
The resolution is 0.0625°C for both local and remote channels, represented as a 12-bit digital code.
- Does the TMP461AIRUNR-S support SMBus communication?
- What is the package type of the TMP461AIRUNR-S?
The device is housed in a 10-lead WQFN package.
- What are some advanced features of the TMP461AIRUNR-S?
Advanced features include series resistance cancellation, η-factor and offset correction, programmable digital filter, and diode fault detection.
- What is the operating current of the TMP461AIRUNR-S?
The operating current is 35 µA at 1 SPS, and the shutdown current is 3 µA.
- Is the TMP461AIRUNR-S suitable for industrial applications?
- Can the TMP461AIRUNR-S detect faults in the remote diode sensors?
- What is the maximum operating temperature of the TMP461AIRUNR-S?
