LM73
- Single Address Pin Offers Choice of Three
Selectable Addresses Per Version for a Total of
Six Possible Addresses. - SMBus and I2C-compatible Two-Wire Interface
- Supports 400-Khz Operation
- Shutdown Mode With One-shot Feature Available
for Very Low Average Power Consumption - Programmable Digital Temperature Resolution
From 11 Bits to 14 Bits - Fast Conversion Rate Ideal for Quick Power Up
and Measuring Rapidly Changing Temperature - Open-Drain ALERT Output Pin Goes Active When
Temperature is Above a Programmed
Temperature Limit - Very Stable, Low-noise Digital Output
- UL Recognized Component
- Key Specifications
- Supply Current
- Operating
- 320 µA (Typical)
- 495 µA (Maximum)
- Shutdown
- 8 µA (Maximum)
- 1.9 µA (Typical)
- Operating
- Temperature Accuracy
- −10°C to 80°C: ±1.0°C (Maximum)
- −25°C to 115°C: ±1.5°C (Maximum)
- −40°C to 150°C: ±2°C (Maximum)
- Resolution
- 0.25°C to 0.03125°C
- Conversion Time
- 11-Bit (0.25°C): 14 ms (Maximum)
- 14-Bit (0.03125°C): 112 ms (Maximum)
- Supply Current
The LM73 is an integrated, digital-output temperature sensor featuring an incremental Delta-Sigma ADC with a two-wire interface that is compatible with the SMBus and I2C interfaces. The host can query the LM73 at any time to read temperature.
Available in a 6-pin SOT package, the LM73 occupies very little board area while operating over a wide temperature range (–40°C to 150°C) and providing ±1°C accuracy from –10°C to 80°C. The user can optimize between the conversion time and the sensitivity of the LM73 by programming it to report temperature in any of four different resolutions. Defaulting to 11-bit mode (0.25°C/LSB), the LM73 measures temperature in a maximum time of 14 ms, making it ideal for applications that require temperature data very soon after power-up. In its maximum resolution, 14-bit mode (0.03125°C/LSB), the LM73 is optimized to sense very small changes in temperature.
A single multi-level address line selects one of three unique device addresses. An open-drain ALERT output goes active when the temperature exceeds a programmable limit. Both the data and clock lines are filtered for excellent noise tolerance and reliable communication. Additionally, a time-out feature on the clock and data lines causes the LM73 to automatically reset these lines if either is held low for an extended time, thus exiting any bus lock-up condition without processor intervention.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | LM73 2.7-V, SOT-23, 11- to 14-Bit Digital Temperature Sensor With 2-Wire Interface datasheet (Rev. F) | PDF | HTML | 2015. 10. 29 | |
| 애플리케이션 노트 | How to Read and Interpret Digital Temperature Sensor Output Data (Rev. A) | PDF | HTML | 2025. 1. 21 | ||
| 인증서 | UL Certificate of Compliance Vol1-Sec6 E232195 | 2018. 8. 9 | |||
| 애플리케이션 노트 | Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) | 2013. 5. 6 |
설계 및 개발
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LM73SW-LINUX — LM73용 Linux 드라이버
The Linux driver supports the LM73 Temperature Sensor. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- lm73
Linux Source Files
(...)
DIGITALTEMPSENSORSEVM-SW — Eval Board Software for Hardware Monitors and Digital Temp Sensors
SENSOREVAL — Eval Board Software For Hardware Monitors And Digital Temperature Sensors
SensorEval
SensorEval software supports the latest TI temperature sensor and hardware monitor evaluation boards via USB interface. It also allows access to sensors mounted directly on motherboards that support Intel chip sets.
- Download SensorEval Software and Manual
- Windows XP support is offered for (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23-THN (DDC) | 6 | Ultra Librarian |