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Global Mixed-mode Technology - Digital Temperature Sensor and Thermal Watchdog

Numéro de référence G751
Description Digital Temperature Sensor and Thermal Watchdog
Fabricant Global Mixed-mode Technology 
Logo Global Mixed-mode Technology 





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G751 fiche technique
Global Mixed-mode Technology Inc.
G751
Digital Temperature Sensor and Thermal Watchdog
with Two-Wire Interface
Features
„SMBus interface
„Programmable Trip Point (TOS) and Hysteresis
(THYST)
„Separate open-drain output pin operates as
interrupt or comparator at output
„Register readback capability
„Power up defaults permit stand-alone opera-
tion as thermostat
„Shutdown mode to minimize power consump-
tion
„Up to 8 G751s can be connected to a single
bus
Key Specifications
„Supply Voltage
„Supply Current
operating
shutdown
„Temperature Accuracy
-25°C to 100°C
-55°C to 125°C
3.0V to 5.5V
280µA (typ)
1mA (max)
2µA(typ)
±2°C (max)
±3°C (max)
Applications
„System Thermal Management
„Personal Computers
„Office Electronics
„Electronic Test Equipment
General Description
The G751 is a temperature sensor, Delta-Sigma
analog-to-digital converter, and digital over- tem-
perature detector with SMBus interface. The host
can query the G751 at any time to read temperature.
The open-drain Over temperature Shutdown (O.S.)
output becomes active when the temperature ex-
ceeds a programmable limit. This pin can operate in
either “Comparator” or “Interrupt” mode.
The host can program both the temperature alarm
threshold (TOS) and the temperature at which the
alarm condition goes away (THYST). In addition, the
host can read back the contents of the G751’s TOS
and THYST registers. The sensor powers up in Com-
parator mode with default thresholds of 50°C TOS
45°C THYST. for G751-1 and 80°C TOS , 75°C THYST
for G751-2.
Ordering Information
PART
G751-1P1
G751-2P1
G751-2P8
TOS THYST
50°C/45°C
80°C /75°C
80°C /75°C
TRANSPORT
MEDIA
2500 Units on Tape
and Reel
2500 Units on Tape
and Reel
2500 Units on Tape
and Reel
PACKAGE
8 SOP
8 SOP
8 MSOP
P1: 8 SOP; P8: 8 MSOP
Pin Configuration
Typical Application
G751
SMBDATA 1
SMBCLK 2
O.S. 3
GND 4
8 +Vs
7 A0
6 A1
5 A2
8Pin SOP/MSOP
Address(Set as
desired)
7
A0 6
A1 5
A2
1
SMBDATA
Interface SMBCLK 2
+VS 3V to 5.5V
8
Typical Bypass 0.1 µF
(Unless mounted close
to Processor)
G751
3 To Processor
O.S. Out Interrupt Line
4 O.S. Set for active low for
wire OR’d multiple
interrupt line
Ver: 2.4
Nov 26, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
1

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