Overview
The TMP464AIRGTR from Texas Instruments is a high-accuracy, low-power temperature sensor designed to monitor both local and remote temperatures. This device features a two-wire interface compatible with I2C or SMBus protocols, making it versatile for various applications. It can simultaneously monitor up to four remote diode-connected temperature zones in addition to the local temperature, enhancing system performance and reducing board complexity. The TMP464 is particularly suited for monitoring temperatures across different processors in complex systems such as servers, telecommunications equipment, and other high-integration environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Local and Remote Accuracy | ±0.75°C (Maximum) | °C |
| Temperature Resolution | 0.0625°C | °C |
| Supply and Logic Voltage Range | 1.7 V to 3.6 V | V |
| Operating Current (1 SPS, All Channels Active) | 43 µA | µA |
| Shutdown Current | 0.3 µA | µA |
| Remote Junction Temperature Range | –55°C to +150°C | °C |
| Package Type | 16-pin VQFN | |
| Package Size | 3 mm × 3 mm | mm |
| ADC Resolution | 13 Bits | |
| Series Resistance Cancellation | Up to 1 kΩ | Ω |
Key Features
- High accuracy (±0.75°C) and high resolution (0.0625°C) temperature measurements.
- Supports up to four remote diode-connected temperature zones and one local temperature zone.
- Series resistance cancellation, η-factor correction, offset correction, and diode fault detection for remote diodes.
- Register lock function to secure key registers.
- I2C or SMBus compatible two-wire interface with pin-programmable address.
- Programmable temperature limits and hysteresis settings.
- Low power consumption with 43 µA operating current and 0.3 µA shutdown current.
- Small, space-efficient 16-pin VQFN package.
Applications
- Temperature monitoring for MCUs, GPUs, ASICs, FPGAs, DSPs, and CPUs.
- Telecommunication equipment.
- Servers and personal computers.
- Cloud Ethernet switches.
- Secure data centers.
- Highly integrated medical systems.
- Precision instruments and test equipment.
- LED lighting thermal control.
Q & A
- What is the accuracy of the TMP464 temperature sensor?
The TMP464 has a maximum accuracy of ±0.75°C for both local and remote temperature measurements. - What is the temperature resolution of the TMP464?
The temperature resolution is 0.0625°C. - What is the supply and logic voltage range for the TMP464?
The supply and logic voltage range is from 1.7 V to 3.6 V. - How many remote temperature zones can the TMP464 monitor?
The TMP464 can monitor up to four remote diode-connected temperature zones in addition to one local temperature zone. - What is the operating current of the TMP464 when all channels are active?
The operating current is 43 µA when all channels are active at 1 SPS (sample per second). - What is the shutdown current of the TMP464?
The shutdown current is 0.3 µA. - What is the remote junction temperature range supported by the TMP464?
The remote junction supports a temperature range from –55°C to +150°C. - What package type and size does the TMP464 come in?
The TMP464 comes in a 16-pin VQFN package with a size of 3 mm × 3 mm. - Does the TMP464 support series resistance cancellation?
Yes, the TMP464 supports series resistance cancellation up to 1 kΩ. - What interfaces does the TMP464 support?
The TMP464 supports I2C or SMBus compatible two-wire interfaces with pin-programmable addresses.
