The MAX6647MUA+ is a +145°C precision SMBus compatible remote/local sensor with over temperature alarm in 8 pin μMAX package. This two channel digital temperature sensor accurately measures the temperature of its own die and a remote PN junction and report the temperature in digital form using a 2-wire serial interface. The remote PN junction is typically the emitter-base junction of a common collector PNP on a CPU, FPGA or ASIC. The 2-wire serial interface accepts standard system management buses (SMBus) write byte, read byte, send byte and receive byte commands to read the temperature data and to program the alarm thresholds. To enhance system reliability IC include a SMBus timeout. Measurements can be done autonomously at the programmed conversion rate or in a single-shot mode. The adjustable conversion rate allows optimizing supply current and temperature update rate to match system needs. It is used in multichip modules, graphics processors, servers and workstations.
Supply voltage range is 3V to 5.5V
Operating temperature range from 0°C to +145°C
0.125°C resolution
Measures high-ideality thermal diodes up to +170°C (apparent) & +145°C (real)
Two alarm outputs, ALERT (complementary) and OVERT (complementary)
Programmable under/overtemperature alarm temperature thresholds
(EN)
