G751_15 [GMT]
Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface;
| 型号： | G751_15 |
| 厂家： | 
GLOBAL MIXED-MODE TECHNOLOGY INC |
| 描述： | Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface |
| 文件： | 总1页 (文件大小：63K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Global Mixed-mode Technology Inc.
G751
Digital Temperature Sensor and Thermal Watchdog
with Two-Wire Interface
General Description
Features
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.
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
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.
Shutdown mode to minimize power con-
sumption
Up to 8 G751s can be connected to a single
bus
Key Specifications
Supply Voltage
Supply Current
3.0V to 5.5V
280µA (typ)
1mA (max)
2µA(typ)
operating
shutdown
Ordering Information
Temperature Accuracy
-25°C to 100°C ±2°C (max)
-55°C to 125°C ±3°C (max)
ORDER
NUMBER
(Pb free/Green)
G751-1P1f
T
OS THYST
PACKAGE
50°C/45°C
80°C/75°C
80°C/75°C
80°C/75°C
SOP-8
SOP-8
Applications
G751-2P1f
System Thermal Management
Personal Computers
Office Electronics
G751-2P8f
MSOP-8
TDFN3X3-8
G751-2RDf
Electronic Test Equipment
P1: SOP-8; P8: MSOP-8; RD: TDFN3X3-8
Pin Configuration
Typical Application Circuit
+VS 3V to 5.5V
Typical Bypass 0.1µF
(Unless mounted close
to Processor)
G751
G751
8
7
+Vs
SMBDATA
1
2
3
8
1
2
3
8
+Vs
A0
SMBDATA
A0
6
5
Address(Set as
desired)
A0
A1
A2
SMBCLK
O.S.
7
6
5
A1
A2
7
6
5
SMBCLK
O.S.
Thermal
Pad
3
To Processor
G751
A1
Interrupt Line
O.S. Out
1
2
GND
4
A2
SMBDATA
SMBCLK
4
GND
Interface
SOP-8/MSOP-8
TDFN3X3-8
4
O.S. Set for active low for
wire OR’d multiple
interrupt line
Note: Recommend connecting the Thermal Pad
to the Ground or let it keep floating.
TEL: 886-3-5788833
Ver: 3.1
http://www.gmt.com.tw
May 27, 2009
1
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