Product overview
Description
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. 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. The STLM75 is pin-for-pin and software compatible with the LM75B.
The STLM75 is specified for operating at supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the supply current is typically (125 μA).
The on-board sigma-delta analog-to-digital converter (ADC) converts the measured temperature to a digital value that is calibrated in degrees centigrade; for Fahrenheit applications a lookup table or conversion routine is required.
The STLM75 is factory-calibrated and requires no external components to measure temperature.
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All 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 (drop-in 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)
- Measures temperatures from –55°C to +125°C (–67°F to +257°F)
Circuit Diagram
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STMicroelectronics - STLM75
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Quality and Reliability
| Part Number | Marketing Status | Package | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| STLM75DS2F | Active | MiniSO-8 | Ecopack2 | |
| STLM75M2F | Active | SO-8 | Ecopack3 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| STLM75DS2F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STLM75M2F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
STLM75DS2F Active
STLM75M2F Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors