LM74
- 0.0625°C Temperature Resolution
- Shutdown Mode Conserves Power Between Temperature Reading
- SPI and MICROWIRE Bus Interface
- 5-Bump DSBGA Package Saves Space
Key Specifications
- Supply Voltage 3.0V or 2.65V to 5.5V
- Supply
Current
- Operating265μA (typ)520μA (max)
- Shutdown3μA (typ)
- Temperature
Accuracy
- −10°C to 65°C, ±1.25°C(max)
- −25°C to 110°C, ±2.1°C(max)
- −55°C to 125°C, ±3°C(max)
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The LM74 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE compatible interface. The host can query the LM74 at any time to read temperature. A shutdown mode decreases power consumption to less than 10 μA. This mode is useful in systems where low average power consumption is critical.
The LM74 has 12-bit plus sign temperature resolution (0.0625°C per LSB) while operating over a temperature range of −55°C to +150°C.
The LM74's 3.0V to 5.5V supply voltage range, low supply current and simple SPI interface make it ideal for a wide range of applications. These include thermal management and protection applications in hard disk drives, printers, electronic test equipment, and office electronics. The LM74 is available in the SOIC package as well as the 5-Bump DSBGA package.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM74 SPI/ MICROWIRE 12-Bit Plus Sign Temperature Sensor datasheet (Rev. K) | 2013. 3. 22 | ||
| 애플리케이션 노트 | AN-1256 Tiny Temperature Sensors for Portable Systems (Rev. A) | 2013. 4. 26 | |||
| 애플리케이션 노트 | Tiny Temperature Sensors for Remote Systems | 2003. 2. 17 |
설계 및 개발
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LM70SW-LINUX — LM70용 Linux 드라이버
The Linux driver supports the LM70 series of Temperature Sensors. The Linux driver supports communication through the SPI bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline StatusAvailable in Linux Main line: Yes
Available through git.ti.com: N/A
- lm70
- tmp121
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
| DSBGA (YTA) | 5 | Ultra Librarian |