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TMP468AIRGTT

±0.75⁰C High-Accuracy Multi-channel Remote and Local Temperature Sensor

Manufacturer: TI
Mfr.Part #: TMP468AIRGTT
Datasheet: TMP468AIRGTT Datasheet (PDF)
Local sensor accuracy (max): 0.35
Type: Remote
Operating temperature range (°C): -40 to 125
Supply voltage (min) (V): 1.7
EDA/CAD Models: Request Free CAD Models for TMP468AIRGTT

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TMP468AIRGTT General Description

The TMP468 device is a multi-zone, high-accuracy, low-power temperature sensor using a two-wire, SMBus or I²C compatible interface. Up to eight remote diode-connected temperature zones can be monitored simultaneously in addition to the local temperature. Aggregating the temperature measurements across a system allows improved performance through tighter guard bands and can reduce board complexity. A typical use case is for monitoring the temperature across different processors, such as MCUs, GPUs, and FPGAs in complex systems such as servers and telecommunications equipment. Advanced features such as series resistance cancellation, programmable non-ideality factor, programmable offset, and programmable temperature limits are included to provide a robust thermal monitoring solution with improved accuracy and noise immunity.

Each of the eight remote channels (and the local channel) can be programmed independently with two thresholds that are triggered when the corresponding temperature is exceeded at the measured location. In addition, there is a programmable hysteresis setting to avoid constant toggling around the threshold.

The TMP468 device provides high accuracy (0.75°C) and high resolution (0.0625°C) measurement capabilities. The device supports low voltage rails (1.7 V to 3.6 V), common two-wire interfaces, and is available in a small, space efficient package (3 mm × 3 mm or 1.6 mm × 1.6 mm) for easy integration into computing systems. The remote junction supports a temperature range from –55°C to +150°C.

Key Features

8-Channel Remote Diode Temperature Sensor Accuracy: ±0.75°C (Maximum)
Local and Remote Diode Accuracy: ±0.75°C (Maximum)
Local Temperature Sensor Accuracy for the DSBGA Package: ±0.35°C (Maximum)
Temperature Resolution: 0.0625°C
Supply and Logic Voltage Range: 1.7 V to 3.6 V
67-µA Operating Current (1 SPS, All Channels Active)
0.3-µA Shutdown Current
Remote Diode: Series Resistance Cancellation,
η-Factor Correction, Offset Correction, and Diode Fault Detection
Register Lock Function Secures Key Registers
I²C or SMBus™ Compatible Two-Wire Interface With Pin-Programmable Address
16-Bump DSBGA and 16-Pin VQFN Packages

Specifications

Local sensor accuracy (max)	0.35	Type	Remote
Operating temperature range (°C)	-40 to 125	Supply voltage (min) (V)	1.7
Interface type	I2C, SMBus	Supply voltage (max) (V)	3.6
Features	ALERT	Supply current (max) (µA)	375
Temp resolution (max) (Bits)	13	Remote channels (#)	8
Addresses	4	Rating	Catalog