GENERAL DESCRIPTION
The SX8733, SX8743 and SX8744 are digital temperature sensors with a 2-wire SMBus interface. It provides a lowcost solution to monitor the temperature of remote diodes as well as its own temperature with an on-chip PN junction sensor. Depending on the device version, 2, 3 or 4 programmable ports are included. They offer the possibility to trig under- / over- temperature alarms which can be used as an interrupt or to connect up to 3 external sensors in single-ended mode or 2 external sensors in differential mode. The parasitic resistances in series with the temperature monitoring diode can be cancelled by an algorithmic, a 3point or a Kelvin (4-wire) method. MUX MUX + ADC - 3 4 D2+ D2- + ADC - SMBUS SMBUS VSS VSS Key Product FEATURES
1 Internal and Up To 3 External Sensors Remote Diode Temp. Accuracy of ±0.5°C on the Temp. Range 25°C to 100°C 2 Temp. Output Formats: 0°C to 127°C and -40°C to 140°C With 0.125°C Resolution Parasitic Series Resistance Cancellation: Algorithmic, 3point and Kelvin (4-wire) Under-/ Over- Temp.
Semtech Corporation
