Overview
The STLM75DS2F, produced by STMicroelectronics, is a high-precision digital CMOS temperature sensor IC. It features a sigma-delta temperature-to-digital converter and an I2C-compatible serial digital interface. This device is designed for various general applications, including personal computers, system thermal management, electronics equipment, and industrial controllers. The STLM75DS2F is packaged in industry-standard 8-lead TSSOP and SO8 packages and is pin-for-pin and software compatible with the LM75B. It operates within a supply voltage range of 2.7 V to 5.5 V and has a typical supply current of 125 μA at 3.3 V.
Key Specifications
| Parameter | Value |
|---|---|
| Temperature Measurement Range | –55°C to +125°C (–67°F to +257°F) |
| Accuracy | ±0.5°C (typ), ±2°C (max) from –25°C to +100°C, ±3°C (max) over full range |
| Supply Voltage | 2.7 V to 5.5 V |
| Supply Current | 125 μA (typ) at 3.3 V |
| Conversion Time | 150 ms (max) |
| Interface | 2-wire I2C/SMBus-compatible |
| Package | SO8, MSOP8 (TSSOP8) |
| Output Pin Configuration | Open drain, configurable for interrupt or comparator/thermostat mode |
Key Features
- Measures temperatures from –55°C to +125°C (–67°F to +257°F) with ±0.5°C (typ) accuracy
- No external components required for temperature measurement
- Low operating current: 125 μA (typ)
- 2-wire I2C/SMBus-compatible serial interface with bus time-out feature and selectable bus address
- Programmable temperature threshold and hysteresis set points
- Power-up defaults permit standalone operation as a thermostat
- Shutdown mode to minimize power consumption
- Dual-purpose event pin for interrupt or comparator/thermostat mode
Applications
- Personal computers and peripherals
- System thermal management
- Electronics equipment
- Industrial controllers
- Communications equipment
Q & A
- What is the temperature measurement range of the STLM75DS2F? The STLM75DS2F measures temperatures from –55°C to +125°C (–67°F to +257°F).
- What is the accuracy of the STLM75DS2F? The device has an accuracy of ±0.5°C (typ), ±2°C (max) from –25°C to +100°C, and ±3°C (max) over the full range.
- What is the supply voltage range for the STLM75DS2F? The supply voltage range is 2.7 V to 5.5 V.
- What is the typical supply current of the STLM75DS2F at 3.3 V? The typical supply current is 125 μA at 3.3 V.
- What type of interface does the STLM75DS2F use? The device uses a 2-wire I2C/SMBus-compatible serial interface.
- Does the STLM75DS2F require external components for temperature measurement? No, the STLM75DS2F does not require external components for temperature measurement.
- What are the available packages for the STLM75DS2F? The device is available in SO8 and MSOP8 (TSSOP8) packages.
- Can the STLM75DS2F be used as a thermostat? Yes, the STLM75DS2F can operate as a thermostat with power-up defaults permitting standalone operation.
- How does the STLM75DS2F minimize power consumption? The device has a shutdown mode to minimize power consumption.
- Is the STLM75DS2F compatible with other devices? Yes, the STLM75DS2F is pin-for-pin and software compatible with the LM75B.
