STDS75
Digital temperature sensor and thermal watchdog-
Active
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.
Download
Datasheet
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
Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DS5156: Digital temperature sensor and thermal watchdog
|
9.0 | 600 KB |
Application Notes
| Description | Version | Size |
|---|---|---|
|
AN2680: Fan speed controller based on STDS75 or STLM75 digital temperature sensor and ST72651AR6 MCU
|
1.1 | 93 KB |
User Manual
| Description | Version | Size |
|---|---|---|
|
UM0452: Temperature sensor evaluation board
|
1.3 | 1,155 KB |
|
UM0690: STEVAL-IFS012V1 demonstration board for multiple temperature sensors
|
1.0 | 2,185 KB |
|
UM0963: STEVAL-IFS012V1 demonstration board based on multiple temperature sensors and RTCs
|
1.0 | 2,206 KB |
|
UM1539: STEVAL-IFS017V1 multi device temperature sensor and RTC demo
|
1.0 | 5,702 KB |
Related Tools and Software
Related Tools and Software
| Part Number | Description |
|---|---|
| STEVAL-IFS003V1 | Temperature Sensor board based on STLM75 / STDS75 and ST72F651 |
| STEVAL-IFS017V1 | Multiple-device temperature sensor and RTC demonstration board based on the STM32 |
| STEVAL-MKI120V1 | LPS331AP adapter board for standard DIL24 socket |
| STSW-ST7055 | Fan speed controller based on STDS75 or STLM75 digital temperature sensor and ST72651AR6 MCU |
Publications and Collaterals
Flyer
| Description | Version | Size |
|---|---|---|
|
STTS75
|
1.0 | 707 KB |
Sample & Buy
Top| Part Number | Marketing Status | Package | Packing Type | Operating Temperature (min) | Operating Temperature (max) | Automotive Grade | Order From ST | Unit Price (US$)* @ | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STDS75DS2F | Active | MSOP/TSSOP 8 | Tape And Reel | -55 | 125 | _ |
| Ecopack2 | PDF XML | ||||||||||||||||||||||
(*) 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 (**) 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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