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G751-2 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers

Part No. G751-2
Description  Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface
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Maker  ETC [List of Unclassifed Manufacturers]
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Ver: 2.2
Nov 07 2001
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G751
Global Mixed-mode Technology Inc.
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
3.0V to 5.5V
Supply Current
operating
280µA (typ)
1mA (max)
shutdown
2µA(typ)
Temperature Accuracy
-25°C to 100°C
±2°C (max)
-55°C to 125°C
±3°C (max)
Applications
System Thermal Management
Personal Computers
Office Electronics
Electronic Test Equipment
Pin Configuration
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
TOS THYST
Transport Media
PACKAGE
G751-1
50°C/45°C 2500 Units on Tape and Reel
8 SOP
G751-2 80°C /75°C 2500 Units on Tape and Reel
8 SOP
Typical Application
SMBDATA
8Pin SOP
1
2
3
45
6
7
8
G751
+Vs
A0
A1
A2
SMBCLK
O.S.
GND
G751
+V
S 3V to 5.5V
Typical Bypass 0.1 µF
(Unless mounted close
to Processor)
To Processor
Interrupt Line
O.S. Set for active low for
wire OR’d multiple
interrupt line
Address(Set as
desired)
Interface
8
3
O.S. Out
4
7
6
5
1
2
A0
A1
A2
SMBDATA
SMBCLK
SMBDATA
8Pin SOP
1
2
3
45
6
7
8
G751
+Vs
A0
A1
A2
SMBCLK
O.S.
GND
SMBDATA
8Pin SOP
1
2
3
45
6
7
8
G751
+Vs
A0
A1
A2
SMBCLK
O.S.
GND
G751
+V
S 3V to 5.5V
Typical Bypass 0.1 µF
(Unless mounted close
to Processor)
To Processor
Interrupt Line
O.S. Set for active low for
wire OR’d multiple
interrupt line
Address(Set as
desired)
Interface
8
3
O.S. Out
4
7
6
5
1
2
A0
A1
A2
SMBDATA
SMBCLK
G751
+V
S 3V to 5.5V
Typical Bypass 0.1 µF
(Unless mounted close
to Processor)
To Processor
Interrupt Line
O.S. Set for active low for
wire OR’d multiple
interrupt line
Address(Set as
desired)
Interface
8
3
O.S. Out
4
7
6
5
1
2
A0
A1
A2
SMBDATA
SMBCLK




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