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NEW PRODUCT NEWS—edited by Harv Weiner

REMOTE/LOCAL TEMPERATURE SENSOR

The MAX1619 is the first remote temperature sensor with remote dual-alarm outputs, one of which can be used to activate CPU fan control without system intervention. The MAX 1619 is a precise digital thermometer (3ęC remote accuracy, 2ęC local accuracy) that measures the die temperature directly by means of an on-chip CPU thermal diode that replaces conventional thermistors or thermocouples. This allows the highest possible clock rates while keeping within the CPU thermal envelope. The remote overtemperature output is an unlatched, open-drain output that behaves as a thermostat. It can directly control a fan to reduce heat buildup, improve efficiency, and protect notebook computers against potentially destructive thermal overloads.

The two-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 read temperature data. Measurements can be taken automatically with the conversion rate programmed by the user or programmed to operate in a single-shot mode.

The MAX 1619 is available in a space-saving 16-pin QSOP package and is guaranteed for the military temperature range (-55 to +125ęC). Prices start from $2.96. A pre-assembled evaluation kit (MAX1619EVKIT) is available with recommended external components to reduce design time.

Maxim Integrated Products
(408) 737-7600
Fax: (408) 737-7194
www.maxim-ic.com

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