TMP121AIDBVT

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1. DESCRIPTION

The TMP121AIDBVT and TMP123 are SPI-compatible temperature sensors available in the tiny SOT23-6 package. Requiring no external components, the TMP121AIDBVT and TMP123 are capable of measuring temperatures within 2°C of accuracy over a temperature range of −40°C to +125°C. Low supply current, and a supply range from 2.7V to 5.5V, make the TMP121 and TMP123 excellent candidates for low-power applications. The TMP121 and TMP123 are ideal for extended thermal measurement in a variety of communication, computer, consumer, environmental, industrial, and instrumentation applications.

2. FEATURES

    1. DIGITAL OUTPUT: SPI-Compatible Interface

    2. RESOLUTION: 12-Bit + Sign, 0.0625°C

    3. ACCURACY: ±1.5°C from −25°C to +85°C (max)

    4. LOW QUIESCENT CURRENT: 50µA (max)

    5. WIDE SUPPLY RANGE: 2.7V to 5.5V

    6. TINY SOT23-6 PACKAGE

    7. OPERATION TO 150°C

3. APPLICATIONS

    1. POWER-SUPPLY TEMPERATURE MONITORING

    2. COMPUTER PERIPHERAL THERMAL PROTECTION

    3. NOTEBOOK COMPUTERS

    4. CELL PHONES

    5. BATTERY MANAGEMENT

    6. OFFICE MACHINES

4. PIN CONFIGURATIONS

5. APPLICATIONS INFORMATION

The TMP121AIDBVT and TMP123 are 12-bit plus sign read-only digital temperature sensors optimal for thermal management and thermal protection applications. The TMP121AIDBVT and the TMP123 communicate through a serial interface that is SPI-compatible. Temperature is converted to a 12-bit plus sign data word with 0.0625°C resolution. The TMP121AIDBVT and TMP123 are specified for a temperature range of −40°C to +125°C, with operation extending from −55°C to +150°C. The TMP121AIDBVT and TMP123 are optimal for low power applications, with a 0.5s conversion period for reduced power consumption. The TMP121AIDBVT and TMP123 are specified for a supply voltage range of 2.7V to 5.5V, and also feature a hardware shutdown to provide additional power savings. The TMP121AIDBVT and TMP123 require no external components for operation, though a 0.1µF supply bypass capacitor is recommended.