Overview
The TMP468AIRGTT from Texas Instruments is a high-accuracy, multi-zone temperature sensor designed for precise temperature monitoring in various applications. This device supports up to eight remote diode-connected temperature zones, in addition to a local temperature sensor, making it ideal for complex systems such as servers and telecommunications equipment. It features a two-wire, SMBus or I²C compatible interface and operates on low voltage rails from 1.7 V to 3.6 V, ensuring efficient and reliable performance.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 16-Pin VQFN (RGT) |
| Operating Temperature Range (°C) | -40 to 125 |
| Supply Voltage Range (V) | 1.7 to 3.6 |
| Temperature Resolution (°C) | 0.0625 |
| Maximum Accuracy (°C) | ±0.75 |
| Operating Current (µA) at 1 SPS, All Channels Active | 67 |
| Shutdown Current (µA) | 0.3 |
| Remote Diode Temperature Range (°C) | -55 to +150 |
| Interface Type | I²C or SMBus |
| Package Dimensions (mm) | 3x3 (VQFN) |
Key Features
- High accuracy temperature measurement: ±0.75°C for both local and remote diodes.
- High resolution: 0.0625°C.
- Support for up to eight remote diode-connected temperature zones and one local temperature sensor.
- 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.
- Low power consumption: 67 µA operating current and 0.3 µA shutdown current.
- Programmable temperature limits and hysteresis settings.
Applications
The TMP468AIRGTT is particularly suited for monitoring temperatures in complex systems such as servers, telecommunications equipment, and other computing systems. It is ideal for monitoring the temperature of various processors like MCUs, GPUs, and FPGAs, helping to improve system performance and reduce board complexity.
Q & A
- What is the maximum accuracy of the TMP468AIRGTT temperature sensor?
The maximum accuracy of the TMP468AIRGTT is ±0.75°C for both local and remote diodes. - What is the temperature resolution of the TMP468AIRGTT?
The temperature resolution is 0.0625°C. - What is the operating voltage range of the TMP468AIRGTT?
The operating voltage range is from 1.7 V to 3.6 V. - How many remote diode-connected temperature zones can the TMP468AIRGTT support?
The TMP468AIRGTT can support up to eight remote diode-connected temperature zones. - What interface types does the TMP468AIRGTT support?
The TMP468AIRGTT supports I²C or SMBus compatible two-wire interfaces. - What are the dimensions of the VQFN package?
The VQFN package dimensions are 3x3 mm. - What is the operating current and shutdown current of the TMP468AIRGTT?
The operating current is 67 µA at 1 SPS with all channels active, and the shutdown current is 0.3 µA. - Does the TMP468AIRGTT have any advanced features for remote diode measurement?
Yes, it includes series resistance cancellation, η-factor correction, offset correction, and diode fault detection. - Can the temperature limits and hysteresis be programmed on the TMP468AIRGTT?
Yes, the temperature limits and hysteresis settings can be programmed independently for each channel. - What is the remote diode temperature range of the TMP468AIRGTT?
The remote diode temperature range is from -55°C to +150°C.
