STMicroelectronics STLM75
The STLM75 is a high-precision digital CMOS temperature sensor IC with a sigma-delta temperature-to-digital converter and an I2C-compatible serial digital interface. It is targeted for general applications such as personal computers, system thermal management, electronics equipment, and industrial controllers, and is packaged in the industry standard 8-lead TSSOP and SO8 packages. The device contains a band gap temperature sensor and 9-bit ADC which monitor and digitize the temperature to a resolution up to 0.5 °C.FEATURES
● Measures temperatures from –55°C to +125°C (–67°F to +257°F) – ±0.5°C (typ) accuracy – ±2°C (max) accuracy from –25°C to +100°C● Low operating current: 125 µA (typ)
● No external components required
● 2-wire I2C/SMBus-compatible serial interface – Supports bus time-out feature – Selectable bus address allows connection of up to eight devices on the bus
● Wide power supply range-operating voltage range: 2.7 V to 5.5 V
● Conversion time is 150 ms (max)
● Programmable temperature threshold and hysteresis set points
● Pin- and software-compatible with LM75 (dropin replacement)
● Power-up defaults permit standalone operation as a thermostat
● Shutdown mode to minimize power consumption
● Output pin (open drain) can be configured for interrupt or comparator/thermostat mode (dual purpose event pin)
● Packages: – SO8 – MSOP8 (TSSOP8) SO8 MSOP8 (TSSOP8) August 2010 Doc ID 13296 Rev 12 1/40 1
DESCRIPTION
1DESCRIPTION
STLM75 The STLM75 is typically accurate to (±3 °C - max) over the full temperature measurement range of –55 °C to 125 °C with ±2 °C accuracy in the –25 °C to +100 °C range.