MAX6642ATT94+T by Analog Devices

±1°C, SMBus-Compatible Remote/Local Temperature Sensor with Overtemperature Alarm


The MAX6642 precise, two-channel digital temperature sensor accurately measures the temperature of its own die and a remote PN junction and reports the temperature data over a 2-wire serial interface. The remote PN junction is typically a substrate PNP transistor on the die of a CPU, ASIC, GPU, or FPGA. The remote PN junction can also be a discrete diode-connected small-signal transistor. The 2-wire serial interface accepts standard system management bus (SMBus™), Write Byte, Read Byte, Send Byte, and Receive Byte commands to read the temperature data and to program the alarm thresholds. To enhance system reliability, the MAX6642 includes an SMBus timeout. The temperature data format is 10 bits with the least significant bit (LSB) corresponding to +0.25°C. The active-low ALERT output asserts when the local or remote overtemperature thresholds are violated. A fault queue can be used to prevent the active-low ALERT output from setting until two consecutive faults have been detected. Measurements can be done autonomously or in a single-shot mode. Remote accuracy is ±1°C maximum error between +60°C and +100°C. The MAX6642 operates from -40°C to +125°C, and measures remote temperatures between 0°C and +150°C. The MAX6642 is available in a 6-pin TDFN package with an exposed pad.

Where to Buy

Prices starting from US$1.84

Distributor Stock
Logo for Farnell
Farnell
from US$1.84
659
in stock
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Logo for Newark Electronics
Newark Electronics
from US$1.94
659
in stock
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Logo for element14
element14
from US$2.16
659
in stock
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Features

Integrated Temperature Sensor Enables Simultaneous Dual Temperature (Remote and Local) Measurements Remote Accuracy ±1°C Local Accuracy ±2°C from +60°C to +100°C Measures Remote Temperature up to +150°C 0.25°C Resolution
Remote Accuracy ±1°C
Local Accuracy ±2°C from +60°C to +100°C
Measures Remote Temperature up to +150°C
0.25°C Resolution
Dual Zone Monitoring Automates Over-Temperature Alarms Programmable Remote/Local Temperature Thresholds ALERT Output
Programmable Remote/Local Temperature Thresholds
ALERT Output
Small Footprint 3mm x 3mm TDFN Package with Exposed Pad Low Thermal Mass Reduces Measurement Latency SMBus/I2C Address Hardwired
3mm x 3mm TDFN Package with Exposed Pad
Low Thermal Mass Reduces Measurement Latency
SMBus/I2C Address Hardwired

Specifications

Sensor Type Remote
# Channels One
Interface 2-Wire/I2C/SMBus
Alarm Output Alert
Functions Remote & Local SensorSingle Temperature Alarm
Accuracy (±°C) 1
Parasite Pwr. No
Temp. Thresh. Programmable
Temp. Resolution (bits) 10
Oper. Temp. (°C) -40 to +125
Package/Pins TDFN/6
BudgetaryPrice (See Notes) 1.45


MAX6642ATT94+T Sensors & Transducers by Analog Devices

TEMPERATURE SENSOR 1DEG C TDFN-6

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

IC Output Type Digital
Sensing Accuracy Range ± 1°C
Sensing Temperature Min -40°C
Sensing Temperature Max 125°C
Sensor Case Style TDFN
No. of Pins 6Pins
Supply Voltage Min 3V
Supply Voltage Max 5.5V
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Temperature Sensor, 1Deg C, Tdfn-6 | Newark Electronics
TEMPERATURE SENSOR, 1DEG C, TDFN-6 | element14

Frequently Asked Questions

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Is the MAX6642ATT94+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX6642ATT94+T .

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