ST Microelectronics

ST Microelectronics
Suite 3, Lvl 7, 43 Bridge St
Hurstville NSW 2220
Tel: 02 9580 3811
Fax: 02 9580 6440

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ST Microelectronics launches series of precision digital-output temperature sensors

ST Microelectronics  has released a new series of precision digital-output temperature sensors, operating over the -55 to +125 degrees C temperature range, which are suitable for low power applications in a wide range of product areas.

The STxx75 devices are software-compatible drop-in replacements for industry standard LM75, DS75 and TCN75A parts, and also complement ST Microelectronics STLM20 analog temperature sensor.

The digital sensors, in standard 8-lead TSSOP and SO-8 packages, are used in control application where a processor with an I2C bus/SMBus needs to take action based on an accurate digital reading of the local temperature, or where an alarm or interrupt is required when a preset temperature level is reached.

They use a band-gap temperature sensor, with a programmable 9-bit to 12-bit sigma-delta ADC (analog to digital converter) to digitise the temperature reading to a resolution of up to 0.0625 degrees C.

The STTS75 devices are factory-calibrated and require no external components.

Accuracy is plus or minus 3 degrees over the full -55 to +125 degrees C temperature range, and plus or minus 2 degrees from -25 to +100 degrees C.

The STTS75 series are designed for a supply voltage range of 2.7V to 5.5V and have a low operating current of 75uA (typical) at 3.3V.

In the power saving shutdown mode the standby current is a very low 1uA maximum. Power-up defaults enable standalone operation as a thermostat, and both temperature and hysteresis values are programmable.

Typical applications include any product with a hard drive including laptops, servers and some set-top boxes plus medical equipment, industrial controllers and LCD backlighting.

Brighter displays and higher speed circuits mean more heat is being generated, which must be dissipated in ever-smaller packages.

This challenge for thermal management in consumer and industrial electronics means that the temperature of ICs and ambient air must be carefully monitored to prevent over-heating and damage.

The STTS75 series is available in volume in SO-8 and MSOP8 (TSSOP8) packages.

ST Microelectronics News

ST Microelectronics unveil new series of high-performance three-axis linear accelerometers (12-Nov-2008)
ST Microelectronics have introduced a new family of high-performance three-axis linear accelerometers with digital output. The tiny 3x3x1mm sensors boast resolution scalability, smart embedded features and reduced power consumption, addressing the exploding demand for miniaturised motion-sensing solutions in the consumer and industrial markets.

TSH122 Video Buffers from ST Microelectronics Unlock Extra Battery Life for Mobile Video Products (11-Nov-2008)
Mobile video devices including digital cameras, camera phones and personal media players can run longer using the new TSH122 video buffer IC from ST Microelectronics, specialists in analogue ICs. The TSH122 video buffer IC has a low operating current of 1.7mA and draws a low standby current at just 4nA typical, 500nA maximum.

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