STMicroelectronics' STTS751 digital temperature sensor (DTS) is mounted on a circuit board to feed back accurate temperature data, allowing a system to manage its temperature, for example, by activating a cooling fan or shutdown circuitry.
Measuring 2 x 2 mm, this sensor is smaller than previous generation sensors and has an ultra-low 50 µA operating current, a power-saving 3 µA standby current, and a one-shot mode that makes the device ideal for battery-powered applications. One-shot operation allows the sensor to sleep for extended periods, waking only to provide an instantaneous reading when triggered by the system.
The STTS751 is accurate to within 1°C and communicates its temperature data via an industry standard system management bus (SMBus) interface. This allows the sensor to be easily designed into a wide range of consumer and professional equipment, including solid-state drives, large display backlights, smart batteries, servers and routers, telecom and Internet infrastructure, and e-readers.
- Single address pin (external resistor) to select four unique slave addresses
- Programmable conversion rates: 0.0625 to 32 conversions/sec
- Low operating current: 50 µA (typ) at 8 conversions/sec
- 4 user programmable resolutions: 9- to 12 bits
- Accuracy: ±1.0°C (typ) from 0 to +85°C
- Fast conversion time: 21 ms (typ) 10-bit
- Operating temperature: -40 to +125°C
- Operating voltage: 2.25 to 3.6 V
- Dual alarm: 1 interrupt and 1 therm
- Low standby current: 3 µA (typ)
- One-shot mode for power saving
- SOT23-6 and UDFN6 packages
- SMBus 2.0 compatible
- LED backlight units for large displays
- Telecom switches and base stations
- Solid state drives (SSDs)
- Portable electronics
- Servers and routers
- Notebook computers
- Smart batteries