STLM75 Digital temperature sensor and thermal watchdog
The STLM75 is a high-precision digital CMOS temperature sensor IC with a sigma-delta temperature-to-digital 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 and SO8 packages.
The device contains a band gap temperature sensor and 9-bit ADC which monitor and digitize the temperature to a resolution up to 0.5 °C. The STLM75 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. The STLM75 is pin-for-pin and software compatible with the LM75B.
The STLM75 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 on-board sigma-delta analog-to-digital converter (ADC) converts the measured temperature to a digital value that is calibrated in degrees centigrade; for Fahrenheit applications a lookup table or conversion routine is required.
The STLM75 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
- Supports bus time-out feature
- Selectable bus address allows connection of up to eight devices on the bus
- Wide power supply range-operating voltage range: 2.7 V to 5.5 V
- Conversion time is 150 ms (max)
- Programmable temperature threshold and hysteresis set points
- Pin- and software-compatible with LM75 (drop-in replacement)
- Power-up defaults permit standalone operation as a thermostat
- Shutdown mode to minimize power consumption
- Output pin (open drain) can be configured for interrupt or comparator/thermostat mode (dual purpose event pin)
- Packages:
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功能框图
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STLM75 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 |
| STLM75M2F |
Active |
|
1000 |
SO-8 |
Tape And Reel |
-55 °C-125 °C |
STLM75M2F |
| STLM75DS2F |
Active |
|
1000 |
MSOP/TSSOP 8 |
Tape And Reel |
-55 °C-125 °C |
STLM75DS2F |
DATASHEET
| 描述 |
版本 |
大小 |
| STLM75 :Digital temperature sensor and thermal watchdog |
12 |
654KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN3108: STLM75 firmware library for the STM32F10x |
1 |
786KB |
| 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 |
| UM0608: ZigBee® smartplug board STEVAL-IHP001V2 |
1 |
1056KB |
| 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 |
2214KB |
| UM0874: Graphical display panel demonstration board based on the STM32F103VE |
1 |
1005KB |
| UM1010: Getting started with the iNEMO™ STEVAL-MKI062V2 |
1 |
875KB |
PRODUCT PRESENTATIONS
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