Datasheet4U Logo Datasheet4U.com

MAX6649 - +145C Precision SMBus-Compatible Remote/ Local Sensors

General Description

The MAX6646/MAX6647/MAX6649 are precise, twochannel digital temperature sensors.

The devices accurately measure the temperature of their own die and a remote PN junction, and report the temperature in digital form using a 2-wire serial interface.

Key Features

  • o Dual Channel: Measures Remote and Local Temperature o 0.125°C Resolution o High Accuracy ±1°C (max) from +60°C to +145°C (Remote), and ±2°C (max) from +60°C to +100°C (Local) o Measures High-Ideality Thermal Diodes Up to +170°C (Apparent) +145°C (Real) o Two Alarm Outputs: ALERT and OVERT o Programmable Under/Overtemperature Alarm Temperature Thresholds o Programmable Conversion Rate o SMBus-Compatible Interface o SMBus Timeout MAX6646/MAX6647/MAX6649 Ordering Information PART TEMP RANGE PIN.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
MAX6640 2-Channel Temperature Monitor Maxim Integrated Products
MAX6641 SMBus-Compatible Temperature Monitor Maxim Integrated Products
MAX6642 SMBus-Compatible Remote/Local Temperature Sensor Maxim Integrated Products
MAX6643 Automatic PWM Fan-Speed Controllers Maxim Integrated Products
MAX6644 Automatic PWM Fan-Speed Controllers Maxim Integrated Products

Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX664 Dual Mode 5V/Programmable Vicropower Voltage Regulators
MAX6646 +145C Precision SMBus-Compatible Remote/ Local Sensors
MAX6647 +145C Precision SMBus-Compatible Remote/ Local Sensors
MAX6648 Precision SMBus-Compatible Remote/Local Temperature Sensors
MAX660 CMOS Monolithic Voltage Converter

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
19-2540; Rev 1; 7/03 +145°C Precision SMBus-Compatible Remote/ Local Sensors with Overtemperature Alarms General Description The MAX6646/MAX6647/MAX6649 are precise, twochannel digital temperature sensors. The devices accurately measure the temperature of their 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 commoncollector PNP on a CPU, FPGA, or ASIC. The 2-wire serial interface accepts standard system management bus (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, the MAX6646/MAX6647/MAX6649 include an SMBus timeout.