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Digital temperature sensor and thermal watchdog
Download Datasheet
The STDS75 is a high-precision CMOS (digital) temperature sensor IC with a delta-sigma analog-to-digital (ADC) 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 package.
The device contains a bandgap temperature sensor and programmable 9- to 12-bit ADC which monitor and digitize the temperature to a resolution up to 0.0625 °C. The STDS75 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. At power-up, the STDS75 defaults to 9-bit resolution for software compatibility with the STLM75.
The STDS75 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 onboard delta-sigma analog-to-digital converter (ADC) converts the measured temperature to a digital value that is calibrated in °C; for Fahrenheit applications a lookup table or conversion routine is required.
The STDS75 is factory-calibrated and requires no external components to measure temperature.
Key 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
- Selectable serial bus address allows connection of up to eight devices on the same bus
- Thermometer resolution is user-configurable from 9 (default) to 12 bits (0.5 °C to 0.0625 °C)
- 9-bit conversion time is 150 ms (max)
- Programmable temperature threshold and hysteresis set points
- Wide power supply range - operating voltage range: 2.7 V to 5.5 V
- Pin- and software-compatible with DS75 (drop-in replacement)
- Power-up defaults permit standalone operation as thermostat
- Shutdown mode to minimize power consumption
- Separate open drain output pin operates as an interrupt or comparator/thermostat output (dual purpose event pin)
- MSOP8 (TSSOP8) package
Circuit Diagram
Resources
Technical Documentation
| Description | Version | Size | |
|---|---|---|---|
|
DS5156: Digital temperature sensor and thermal watchdog | 9.0 | 600 KB |
| Description | Version | Size | |
|---|---|---|---|
|
|
AN2680: Fan speed controller based on STDS75 or STLM75 digital temperature sensor and ST72651AR6 MCU | 1.4 | 125 KB |
Publications and Collaterals
| Description | Version | Size | |
|---|---|---|---|
|
|
STTS75 | 2.2 | 706 KB |
| Description | Version | Size | |
|---|---|---|---|
|
|
MEMS ans Sensors Smart Motion tracking, IoT and enhanced user experience | 1.0 | 1 MB |
Tools and Software
| Part Number | Manufacturer | Description |
|---|---|---|
| AWS IoT Core | AWS | AWS IoT Core is a managed cloud platform that lets connected devices easily and securely interact with cloud applications and other devices. |
| AZURE Cloud | Microsoft | Microsoft Azure is an ever-expanding set of cloud services to help your organization meet your business challenges. It's the freedom to build, manage, and deploy applications on a massive, global network using your favorite tools and frameworks. |
| Watson IoT Platform | IBM | IBM Watson IoT Platform is a managed, cloud-hosted service designed to make it simple to derive value from your Internet of Things devices. |
| Part Number | Manufacturer | Description |
|---|---|---|
| SensiBLE | SensiEDGE | Tiny 20*30mm SOM integrating Microcontroller + BLE + Battery + Sensors: Microphone, Accelerometer, Magnetometer, Gyroscope, plus Humidity, Temperature, Proximity, ambient Light and UV sensors. Featuring low power ARM® 32-bit Cortex®-M4 CPU with FPU and certified BLE 4.1, the SensiBLE `hardware-ready' module will speed up IoT product development! |
| SensiSUB | SensiEDGE | Tiny 20*30mm SOM integrating Microcontroller + SUB-1GHz + Battery + Sensors: Microphone, Accelerometer, Magnetometer, Gyroscope, plus Humidity, Temperature, Proximity, ambient Light and UV sensors. SensiSUB is a Ready to use module pre-programmed with 6LoWPAN protocol, includes SPIRIT1 low-power, sub-1GHz RF transceiver and features ARM® 32-bit Cortex®-M4 CPU with FPU. Design advanced IoT applications with no RF expertise! |
| Part Number | Manufacturer | Description |
|---|---|---|
| STSW-ST7055 | ST | Fan speed controller based on STDS75 or STLM75 digital temperature sensor and ST72651AR6 MCU |
| Part Number | Manufacturer | Description |
|---|---|---|
| Evatronix Electronic Design Services | Evatronix | We deliver embedded design services in the fields of electronic and mechanical hardware as well as embedded software. |
| SensiEDGE Hardware customization services | SensiEDGE | SensiEDGE offers end-to-end development services including Hardware, Firmware, Software development, Enclosure, Cloud and mobile APPs. SensiEDGE offers full customization services for all its SOM, and combines modules with additional components to help reach proof of concept stage in a very short time. Speed up your IoT product development right now with help from SensiEDGE! |
Sample & Buy
| Part Number | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Marketing Status | Unit Price (US$) * | Quantity | ECCN (US) | Country of Origin | More info | Order from ST | Order from Distributors |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STDS75DS2F | MSOP/TSSOP 8 | Tape And Reel | -55 | 125 | Active : Product is in volume production | - | EAR99 | MALAYSIA | MORE INFO | Buy Direct Add to cart | DISTRIBUTOR AVAILABILITY |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
Quality & Reliability
| Part Number | Marketing Status | Package | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| STDS75DS2F | Active | MSOP/TSSOP 8 | Ecopack2 |
|
(**) 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.
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MORE INFO
No availability reported, please contact our Sales office
Active: In Production.
| Distributor Name | Region | Stock | Min. Order |
|---|
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