Digital Temperature Sensor and Thermal Watchdog
Global Mixed-mode Technology Inc.
G751
Digital Temperature Sensor and Thermal Watchdog
with Two-Wire Interface
Featu...
Description
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- temperature 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 exceeds 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 Comparator mode with default thresholds of 50°C TOS 45°C THYST. for G751-1...
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