G7811 Datasheet, PDF (1/1 Pages) Global Mixed-mode Technology Inc – ±3C Local Temperature Sensor with SMBus Serial

Global Mixed-mode Technology Inc.
G7811
±3°C Local Temperature Sensor with SMBus Serial
Interface
Features
„ Measures Local Temperatures
„ No Calibration Required
„ SMBus 2-Wire Serial Interface
„ Programmable Under/Overtemperature Alarms
„ Supports SMBus Alert Response
„ Accuracy:
±3°C (+60°C to + 100°C, local)
„ 320µA (typ) Average Supply Current During
Conversion
„ +3V to +5.5V Supply Range
„ Small 8-Lead MSOP Package
Applications
Desktop and Notebook
Computers
Smart Battery Packs
LAN Servers
Industrial Controllers
Central Office
Telecom Equipment
Test and Measurement
Multi-Chip Modules
General Description
The G7811 is a precise digital thermometer that reports
the temperature of both a remote sensor and its own
package.
The 2-wire serial interface accepts standard System
Management Bus (SMBus) Write Byte, Read Byte,
Send Byte, and Receive Byte commands to program
the alarm thresholds and to read temperature data.
The data format is in two’s-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 allows the user to control the sup-
ply current drain.
The G7811 is available in a small, 8-pin MSOP
surface-mount package.
Ordering Information
ORDER
NUMBER
G7811P81U
Note: P8 : MSOP-8
1: Bonding Code
U: Tape & Reel
MARKING
G7811
TEMP.
RANGE
-55°C to +125°C
PACKAGE
(Green)
MSOP-8
Pin Configuration
Typical Application Circuit
VCC 1
TST1 2
TST2 3
THERM 4
G7811
8 SMBCLK
7 SMBDATA
6 ALERT
MSOP-8
5 GND
0.1µF
3V TO 5.5V
VCC
GND
SMBCLK
SMBDATA
ALERT
THERM
10kΩ EACH
CLOCK
DATA
INTERRUPT TO µC
Ver: 0.3
Jun 16, 2009
TEL: [phone]
http://www.gmt.com.tw
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