LM35
- Calibrated Directly in Celsius (Centigrade)
- Linear + 10-mV/°C Scale Factor
- 0.5°C Ensured Accuracy (at 25°C)
- Rated for Full −55°C to 150°C Range
- Suitable for Remote Applications
- Low-Cost Due to Wafer-Level Trimming
- Operates From 4 V to 30 V
- Less Than 60-µA Current Drain
- Low Self-Heating, 0.08°C in Still Air
- Non-Linearity Only ±¼°C Typical
- Low-Impedance Output, 0.1 Ω for 1-mA Load
The LM35 series are precision integrated-circuit temperature devices with an output voltage linearly-proportional to the Centigrade temperature. The LM35 device has an advantage over linear temperature sensors calibrated in Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 device does not require any external calibration or trimming to provide typical accuracies of ±¼°C at room temperature and ±¾°C over a full −55°C to 150°C temperature range. Lower cost is assured by trimming and calibration at the wafer level. The low-output impedance, linear output, and precise inherent calibration of the LM35 device makes interfacing to readout or control circuitry especially easy. The device is used with single power supplies, or with plus and minus supplies. As the LM35 device draws only 60 µA from the supply, it has very low self-heating of less than 0.1°C in still air. The LM35 device is rated to operate over a −55°C to 150°C temperature range, while the LM35C device is rated for a −40°C to 110°C range (−10° with improved accuracy). The LM35-series devices are available packaged in hermetic TO transistor packages, while the LM35C, LM35CA, and LM35D devices are available in the plastic TO-92 transistor package. The LM35D device is available in an 8-lead surface-mount small-outline package and a plastic TO-220 package.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LM35 Precision Centigrade Temperature Sensors datasheet (Rev. H) | PDF | HTML | 2017/12/21 | ||
| 應用說明 | Temperature Monitor for Power Modules and Power Electronic Parts | 2025/7/30 | ||||
| Circuit design | Low-input bias-current front end SAR ADC circuit (Rev. B) | PDF | HTML | 2024/9/24 | |||
| 應用說明 | Temperature sensors: PCB guidelines for surface mount devices (Rev. A) | 2019/1/18 | ||||
| 證書 | UL Certificate of Compliance Vol1-Sec14 E232195 | 2018/8/6 | ||||
| 技術文章 | What are you sensing? Pros and cons of four temperature sensor types | PDF | HTML | 2015/8/26 | |||
| 應用說明 | Thermocouple, Cold-Junction Compensation—Analog Approach | 2014/8/27 | ||||
| 應用說明 | AN-460 LM34/LM35 Precision Monolithic Temperature Sensors (Rev. C) | 2013/5/1 | ||||
| 應用說明 | AN-1852 Designing With pH Electrodes (Rev. A) | 2013/5/1 | ||||
| 應用說明 | TO-92 Packing Options / Ordering Instructions (Rev. A) | 2010/6/23 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
SLOC348 — LM35 Arduino Example Code v1.0
TIDA-01576 — 具有 16 位元 1-MSPS 雙同步取樣 ADC 的高準確度類比輸入模組參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TO-CAN (NDV) | 3 | Ultra Librarian |
| TO-92 (LP) | 3 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
| TO-220 (NEB) | 3 | Ultra Librarian |