台湾致新 G781P8F MSOP-8 代理商 主推

　　General Description

　　The G781 is a precise digital thermometer that reports

　　the temperature of both a remote sensor and its own

　　package. The remote sensor is a diode-connected transistor

　　typically a low-cost, easily mounted 2N3904 NPN

　　type that replace conventional thermistors or thermocouples.

　　Remote accuracy is ±1°C with no calibration

　　needed. It also has a build-in noise filtering function in

　　remote sensor measuring the diode temperature. The

　　remote channel can also measure the die temperature

　　of other ICs, such as microprocessors, that contain an

　　on-chip, diode-connected transistor.

　　The 2-wire serial interface accepts standard System

　　Management Bus (SMBus) Write Byte, Read Byte,

　　Send Byte, and Receive Byte commands to program

　　the alarm thresholds and to read temperature data.

　　The data format is 11bits plus sign, with each bit corresponding

　　to 0.125°C, in two’s-complement format.

　　Measurements can be done automatically and

　　autonomously, with the conversion rate programmed

　　by the user or programmed to operate in a single-shot

　　mode. The adjustable rate allows the user to control

　　the supply current drain.

　　The G781 and G781-1 have the same functions but

　　different SMBus slave addresses. This allows for one

　　of each to be on the bus at the same time.

　　The G781 is available in a small, 8-pin SOP, MSOP

　　and TDFN surface-mount package.