MAX6649MUA+

The MAX6649MUA+ 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
• Programmable conversion rate
• SMBus compatible interface
• SMBus timeout
• Desktop Computers; Graphics Processors; Multichip Modules; Notebook Computers; Servers; Test and Measurement Equipment; Thin Clients; Workstations

Applications

Industrial, Sensing & Instrumentation

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party