TMP468 ±0.75⁰C High-Accuracy Multi-channel Remote and Local Temperature Sensor | TI.com

TMP468
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±0.75⁰C High-Accuracy Multi-channel Remote and Local Temperature Sensor

 

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.

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

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Parametrics

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Part number Order Device type Interface Local sensor accuracy (Max) (+/- C) Temp resolution (Max) (bits) Operating temperature range (C) Supply voltage (Min) (V) Supply voltage (Max) (V) Supply current (Max) (uA) Features Remote channels (#) Addresses Rating Package Group Package size: mm2:W x L (PKG)
TMP468 Order now Remote     I2C, SMBus, 2-Wire     0.35     13     -40 to 125     1.7     3.6     375     One shot conversion control
Programmable Alert
Programmable conversion rate
Remote diode fault detection    
8     4     Catalog     DSBGA | 16
VQFN | 16    
See datasheet (DSBGA)
16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
LM95234 Order now Remote     I2C, SMBus, 2-Wire     2     11     -40 to 140     2.7     5.5     800     One shot conversion control
Programmable Alert
Programmable conversion rate
Remote diode fault detection
Shutdown
Thermal diode input stage filtering    
4     3     Catalog     WSON | 14     14WSON: 16 mm2: 4 x 4 (WSON | 14)    
TMP423 Order now Remote     I2C, SMBus, 2-Wire     2.5     12     -40 to 125     2.7     5.5     38     Shutdown     3     2     Catalog     SOT-23 | 8     8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)    
TMP464 Order now Remote     I2C, SMBus, 2-Wire     0.75     13     -40 to 125     1.7     3.6     375     One shot conversion control
Programmable Alert
Programmable conversion rate
Remote diode fault detection    
4     4     Catalog     VQFN | 16     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)