MAX1617MEE+

MAX1617MEE+ is a remote/local temperature sensor with an SMBus serial interface. It 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 replaces conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, with no calibration needed. The remote channel can also measure the die temperature of other ICs, such as microprocessors, that contain an onchip, 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. Applications include desktop and notebook computers, smart battery packs, LAN servers, industrial controls, central office telecom equipment, test and measurement, and multi-chip modules.

• Two channels: measures both remote and local temperatures
• No calibration required, SMBus 2-wire serial interface
• Programmable under/overtemperature alarms, supports SMBus alert response
• 70μA (max) supply current in auto-convert mode
• 3V to +5.5V supply range
• Temperature resolution is 8bits monotonicity guaranteed, VCC=+3.3V, TA=0°C to +85°C
• Standby supply current is 3µA typ at SMBus static, logic inputs forced to VCC or GND
• Conversion time is 125ms typ at from stop bit to conversion complete (both channels)
• 16 QSOP package
• Temperature range from -55°C to +125°C