G751-1P1 Datasheet, PDF (1/11 Pages) Global Mixed-mode Technology Inc – Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface

Global Mixed-mode Technology Inc.
G751
Digital Temperature Sensor and Thermal Watchdog
with Two-Wire Interface
Features
„SMBus interface
„Programmable Trip Point (T_OS) and Hysteresis
(T_HYST)
„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 (T_OS) and the temperature at which the
alarm condition goes away (T_HYST). In addition, the
host can read back the contents of the G751’s T_OS
and T_HYST registers. The sensor powers up in Com-
parator mode with default thresholds of 50°C T_OS
45°C T_HYST. for G751-1 and 80°C T_OS , 75°C T_HYST
for G751-2.
Ordering Information
PART
G751-1P1
G751-2P1
G751-2P8
T_OS T_HYST
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
+V_S 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: [phone]
http://www.gmt.com.tw
1