7-Channel Precision Remote-Diode Thermistor and Local Temperature Monitor - Maxim Integrated Products
Description
19-3476; Rev 3; 8/07
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7-Channel Precision Remote-Diode, Thermistor, and Local Temperature Monitor
General Description
The MAX6698 precision multichannel temperature sensor monitors its own temperature, the temperatures of three external diode-connected transistors, and the temperatures of three thermistors.
All temperature channels have programmable alert thresholds.
Channels 1, 4, 5, and 6 also have programmable overtemperature thresholds.
When the measured temperature of a channel exceeds the respective threshold, a status bit is set in one of the status registers.
Two opendrain outputs, OVERT and ALERT, assert corresponding to these bits in the status register.
The 2-wire serial interface supports the standard system management bus (SMBus™) protocols: write byte, read byte, send byte, and receive byte for reading the temperature data and programming the alarm thresholds.
The MAX6698 is specified for an operating temperature range of -40°C to +125°C and is available in 16-pin QSOP and 16-pin TSSOP packages.
Features
♦ Three Thermal-Diode Inputs and Three Thermistor Inputs ♦ Local Temperature Sensor ♦ 1°C Remote Temperature Accuracy (+60°C to +100°C) ♦ Temperature Monitoring Begins at POR for FailSafe System Protection ♦ ALERT and OVERT Outputs for Interrupts, Throttling, and Shutdown ♦ Small 16-Pin QSOP and 16-Pin TSSOP Packages ♦ 2-Wire SMBus Interface
MAX6698
Ordering Information
PART MAX6698EE_ _ MAX6698UE_ _ TEMP RANGE -40°C to +125°C -40°C to +125°C PINPACKAGE 16 QSOP 16 TSSOP PKG CODE E16-1 U16-1
Applications
Desktop Computers Notebook Computers Workstations Servers
*See the Slave Address section.
Pin Configuration appears at end of data sheet.
Typical Application Circuit
+3.
3V
1 2 3 4 5 6 7 8
DXP1 DXN1 DXP2 DXN2 DXP3 DXN3 THER3 VREF
GND 16
MAX6698
SMBCLK 15 SMBDATA 14 ALERT 13 VCC 12 OVERT 11 THER1 10 THER2 9
REX3
REX2
REX1
RTHER3
RTHER2
RTHER1
SMBus is a trademark of Intel Corp.
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