Features: Single Channel: Measures Remote CPU Tem-perature
No Calibration Required
SMBus 2-Wire Serial Interface
Programmable Under/Overtemperature Alarms
Supports SMBus Alert Response
Accuracy:
±3°C (+60°C to +100°C, remote)
3µA (typ) Standby Supply Current
300µA (max) Supply Current in Auto- Convert Mode
+3V to +5.5V Supply Range
Small, 10-Pin MSOP Package Application-Desktop and Notebook
-Central Office
-Computers
-Telecom Equipment
-Smart Battery Packs
-Test and Measurement
-LAN Servers
-Multi-Chip Modules
-Industrial Controls
Pinout
SpecificationsVcc to GND................................-0.3V to +6V
DXP, ADD to GND.........................-0.3V to (Vcc + 0.3V)
DXN to GND................................-0.3V to +0.8V
SMBCLK, SMBDATA,ALERT,STBY to GND .................-0.3V to +6V
SMBDATA,ALERTCurrent.........................-1mA to +50mA
DXN Current...................................±1mA
ESD Protection (all pins, human body model)..................2000V
Continuous Power Dissipation(TA = +70°C)
MSOP (derate 5.6mW/°C above +70°C)...................444mW
Operating Temperature Range...................-55°C to +125°C
Junction Temperature.............................+150°C
Storage temperature Range....................-65°C to +165°C
Lead Temperature (soldering, 10sec).....................+300°CDescriptionThe G766 is a precise digital thermometer that reports the temperature of a remote sensor. The remote sensor of G766 is a diode-connected transistor typically a low-cost, easily mounted 2N3904 NPN type-that replace con-ventional thermistors or thermocouples. Remote ac-curacy is ±3°C for multiple transistor manufacturers, with no calibration needed. The G766 can also meas-ure the die temperature of other ICs, such as micro-processors, that contain an on-chip, diode-connected transistor.
The 2-wire serial interface accepts standard System Management Bus (SMBusTM) Write Byte, Read Byte, Send Byte, and Receive Byte commands to program
the alarm thresholds and to read temperature data. The data format of G766 is 7 bits plus sign, with each bit cor-responding to 1°C, in twos-complement format. Meas-urements can be done automatically and autono-mously, with the conversion rate programmed by the user or programmed to operate in a single-shot mode. The adjustable rate of G766 allows the user to control the sup-ply-current drain.
The G766 is available in a small, 10-pin MSOP sur-face-mount package.
G766 Data Sheet
