STCN75 Digital temperature sensor and thermal watchdog
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
技术特性
- Measures temperatures from –55 °C to +125 °C (–67 °F to +257 °F)
- ±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
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功能框图
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STCN75 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STCN75DS2F |
Active |
|
1000 |
MSOP/TSSOP 8 |
Tape And Reel |
-55 °C-125 °C |
STCN75DS2F |
DATASHEET
| 描述 |
版本 |
大小 |
| STCN75 :DS5156: Digital temperature sensor and thermal watchdog |
9 |
601KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2680: Fan speed controller based on STDS75 or STLM75 digital temperature sensor and ST72651AR6 MCU |
1 |
120KB |
USER MANUALS
| 描述 |
版本 |
大小 |
| UM0452: Temperature sensor evaluation board |
1 |
1175KB |
| UM0690: STEVAL-IFS012V1 demonstration board for multiple temperature sensors |
1 |
2190KB |
| UM0963: STEVAL-IFS012V1 demonstration board based on multiple temperature sensors and RTCs |
1 |
567KB |
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