Atmel Digital Temperature Sensors Worlds Most Versatile Temperature Sensing SolutionsWhy Do Applications Need a Temperature Sensor Worlds Most As todays electronic systems run faster and as silicon content increases, these applications are generating more heat than ever, making the need to monitor Versatile temperature increasingly important. A temperature sensor can effectively measure the system and processor temperatures and allows the processor and system bus Temperature frequencies to be throttled back when the temperature exceeds a preset limit. This ensures product safety and reliability while minimizing the need for cooling fans and heat sinks which may not be practical in todays increasingly compact designs. Sensing For systems that do include a fan to maintain proper conditions, temperature sensors can be used to vary the fan speed as needed to reduce noise, reduce power Solutions consumption, and prolong the life of the fan. In portable applications that utilize Liion or Li polymer batteries, temperatures in excess of 60C can cause the batteries to overheat and swell, catch on fire, or even Ideal For: explode. A temperature sensor can actively monitor the battery temperature, allowing Industrial: Industrial controls, the system to warn the user, to shut itself down, or to even shut down the battery smart meters, HVAC, lighting charging in the event of an overtemperature situation, thereby increasing the safety ballast, fire alarms, test equip and reliability of the application. ment, medical devices, and LED lighting Digital Temperature Sensor Advantages and Benefits Consumer: Liion batteries, settop boxes, audio/video Would you rather have this equipment, game consoles, SCL AT30TS750A Or this white goods, thermostats, SDA MCU Temp Sensor and LED lighting ALERT V+ Communications: Telecom V+ Shunt No calibration required Processor Voltage equipment, smartphones, No separate ADC required Reference ADC NTC Increased system reliability Reference gate ways, routers, headsets, Thermistor No need for ADC on MCU ADC call servers, and power supplies Input More features and flexibility - Comparator Ability to control other circuits Computers: Desktops, laptops, V+ Digital Reduction in design complexity Input + netbooks, tablets, servers, Easier manufacturing flow SSDs and HDDs Better manufacturing throughput Shunt Voltage Power saving Reference Lower overall system cost Competing Solution Application Example: Atmel Digital Temperature Sensors provide highly accurate measurement to better control temperature and prolong the life of the LEDs. Temp Sensor Ambient Light G3 Sensor G2 PWM Occupancy ATtiny Micro LED Driver G1 Sensor G0 2 2014 / www.atmel.com