MAX6680MEE+ by Analog Devices

±1°C Fail-Safe Remote/Local Temperature Sensors with SMBus Interface


The MAX6680/MAX6681 are precise, two-channel digital thermometers. Each accurately measures the temperature of its own die and one remote PN junction and reports the temperature on a 2-wire serial interface. The remote junction can be a diode-connected transistor like the low-cost NPN type 2N3904 or PNP type 2N3906. The remote junction can also be a common-collector PNP, such as a substrate PNP of a microprocessor. The MAX6680/MAX6681 include pin-programmable default temperature thresholds for the active-low OVERT output, which provides fail-safe clock throttling or system shutdown. In addition, the devices are pin programmable to select whether the active-low OVERT output responds to either the local, remote, or both temperatures. The 2-wire serial interface accepts standard System Management Bus (SMBus™) commands such as Write Byte, Read Byte, Send Byte, and Receive Byte to read the temperature data and program the alarm thresholds and conversion rate. The MAX6680/MAX6681 can function autonomously with a programmable conversion rate, which allows the control of supply current and temperature update rate to match system needs. For conversion rates of 4Hz or less, the remote sensor temperature can be represented in extended mode as 10 bits + sign with a resolution of 0.125°C. When the conversion rate is 8Hz, output data is 7 bits + sign with a resolution of 1°C. The MAX6680/MAX6681 also include an SMBus timeout feature to enhance system reliability. The MAX6681 is an upgrade to the MAX6654. The MAX6680/MAX6681 remote accuracy is ±1°C with no calibration needed. They are available in a 16-pin QSOP package and operate throughout the -55°C to +125°C temperature range.

Where to Buy

Prices starting from US$5.88

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Farnell
from US$6.64
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element14
from US$6.17
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Analog Devices
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Newark Electronics
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Features

Two Alarm Outputs: Active-Low ALERT and Active-Low OVERT
Pin-Programmable Threshold for Active-Low OVERT Limit
Programmable Under/Overtemperature Active-Low ALERT Limit
Dual Channel: Measures Remote and Local Temperature
11-Bit, 0.125°C Resolution for Remote Temperature Measurements
High Accuracy ±1°C (max) from +60°C to +100°C (Remote)
No Calibration Required
SMBus/I²C-Compatible Interface
SMBus Timeout Prevents SMBus Lockup

Specifications

Sensor Type Remote
# Channels One
Interface 2-Wire/I2C/SMBus
Alarm Output AlertOvert
Functions Fan ControllerRemote & Local Sensor
Accuracy (±°C) 1
Parasite Pwr. No
Temp. Thresh. Programmable
Temp. Resolution (bits) 11
Oper. Temp. (°C) -55 to +125
Package/Pins QSOP/16
BudgetaryPrice (See Notes) 4.23


MAX6680MEE+ Sensors & Transducers by Analog Devices

TEMPERATURE SENSOR 1DEG C QSOP-16

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 -55°C
Sensing Temperature Max 125°C
Sensor Case Style QSOP
No. of Pins 16Pins
Supply Voltage Min 3V
Supply Voltage Max 5.5V
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

±1°C Fail-Safe Remote/Local Te | Analog Devices
TEMPERATURE SENSOR, 1DEG C, QSOP-16 | Farnell
Temperature Sensor, 1Deg C, Qsop-16 | Newark Electronics

Frequently Asked Questions

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Is the MAX6680MEE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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