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GENERAL DESCRIPTION

The TMP01 is a temperature sensor that generates a voltage output proportional to absolute temperature and a control signal from one of two outputs when the device is either above or below a specific temperature range. Both the high/low temperature trip points and hysteresis (overshoot) band are determined by user-selected external resistors. For high volume production, these resistors are available on board.

The TMP01 consists of a band gap voltage reference combined with a pair of matched comparators. The reference provides both a constant 2.5 V output and a voltage proportional to absolute temperature (VPTAT) which has a precise temperature coefficient of 5 mV/K and is 1.49 V (nominal) at 25°C. The comparators compare VPTAT with the externally set temperature trip points and generate an open-collector output signal when one of their respective thresholds has been exceeded.

FEATURES

?55°C to +125°C (?67°F to +257°F) operation

±1.0°C accuracy over temperature (typ)

Temperature-proportional voltage output

User-programmable temperature trip points

User-programmable hysteresis

20 mA open-collector trip point outputs

TTL/CMOS compatible

Single-supply operation (4.5 V to 13.2 V)

PDIP, SOIC, and TO-99 packages

APPLICATIONS

Over/under temperature sensor and alarm

Board-level temperature sensing

Temperature controllers

Electronic thermostats

Thermal protection

HVAC systems

Industrial process control

Remote sensors