Overview
The STDS75DS2F from STMicroelectronics is a high-precision CMOS digital temperature sensor IC, equipped with a delta-sigma analog-to-digital converter (ADC) and an I2C-compatible serial digital interface. This device is designed for a wide range of applications, including personal computers, system thermal management, electronics equipment, and industrial controllers. It is packaged in an industry-standard 8-lead TSSOP or MSOP package, making it versatile and easy to integrate into various systems.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Temperature Range | -55°C to +125°C (-67°F to +257°F) |
| Temperature Accuracy | ±0.5°C (typ), ±2°C (max) from -25°C to +100°C |
| Operating Voltage Range | 2.7 V to 5.5 V |
| Operating Current | 125 µA (typ) at 3.3 V |
| Resolution | User-configurable from 9 bits (0.5 °C) to 12 bits (0.0625 °C) |
| Conversion Time | 150 ms (max) for 9-bit resolution |
| Interface | 2-wire I2C/SMBus-compatible serial interface |
| Address Selection | Up to 8 devices on the same bus using A0, A1, and A2 pins |
| Package | 8-lead TSSOP or MSOP |
| RoHS Compliance | Yes, Ecopack2 compliant |
Key Features
- No external components required for temperature measurement.
- Programmable temperature threshold and hysteresis set points.
- Separate open drain output pin for interrupt or comparator/thermostat output.
- Shutdown mode to minimize power consumption.
- Pin- and software-compatible with DS75 (drop-in replacement).
- Power-up defaults permit standalone operation as a thermostat.
- Thermal alarm function with comparator and interrupt modes.
Applications
- Personal computers and laptops for thermal management.
- System thermal management in various electronic equipment.
- Industrial controllers and automation systems.
- General electronics where precise temperature monitoring is required.
Q & A
- What is the operating temperature range of the STDS75DS2F?
The STDS75DS2F operates from -55°C to +125°C (-67°F to +257°F).
- What is the typical accuracy of the STDS75DS2F temperature sensor?
The typical accuracy is ±0.5°C, with a maximum accuracy of ±2°C from -25°C to +100°C.
- What is the operating voltage range of the STDS75DS2F?
The device operates from 2.7 V to 5.5 V.
- How much current does the STDS75DS2F typically consume?
The device typically consumes 125 µA at 3.3 V.
- What is the resolution of the temperature measurements?
The resolution is user-configurable from 9 bits (0.5 °C) to 12 bits (0.0625 °C).
- How long does it take for the STDS75DS2F to perform a temperature conversion?
The conversion time is up to 150 ms for 9-bit resolution.
- What type of interface does the STDS75DS2F use?
The device uses a 2-wire I2C/SMBus-compatible serial interface.
- Can multiple STDS75DS2F devices be connected on the same bus?
Yes, up to 8 devices can be connected using the A0, A1, and A2 pins for address selection.
- Is the STDS75DS2F RoHS compliant?
Yes, the STDS75DS2F is RoHS compliant and Ecopack2 certified.
- What is the purpose of the separate open drain output pin?
The separate open drain output pin operates as an interrupt or comparator/thermostat output.
