LMT90
- Industry-Standard Sensor Gain/Offset:
- 10mV/°C, 500mV at 0°C
- Drop-in functional equivalent to LM50C
- LMT90 Temperature Accuracy:
- ±3°C (Max) at 25°C
- ±4°C (Max) over −40°C to +125°C
- Operating supply range: 4.5V to 10V
- Quiescent Current (Typ): 95µA
- Available in Standard SOT23-3 package
- Nonlinearity: ±0.8°C (Max)
- DC Output Impedance: 2kΩ/4kΩ (typ/Max)
- Enables driving large capacitive loads
- Cost-Effective Alternative to Thermistors
The LMT90 device is a cost-optimized precision analog temperature sensor developed as a linear alternative to discrete thermistors. This device can measure temperatures from -40°C to 125°C using a single positive supply. The output voltage of the device is linearly proportional to temperature (10mV/°C) and has a DC offset of 500mV at 0°C. The offset allows reading negative temperatures without the need for a negative supply. The output voltage of the LMT90 ranges from 100mV (at –40°C) to 1.75V (at 125°C), simplifying analog-to-digital converter (ADC) interfacing.
The LMT90 is a drop-in equivalent to LM50C and does not require any external calibration, trimming or software linearization leading to simplifying the circuitry requirements in a single supply environment. Due to low quiescent current of LMT90 (typically around 95µA), self-heating is limited to a very low 0.2°C (in still air). This device is suitable for HVAC, appliance, and consumer electronics applications. Trimming and calibration of the LMT90 at the wafer level supports long-term availability, low cost and consistent accuracy (±3°C at 25°C, ±4°C over temperature range).
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기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | LMT90 Industry-Standard, ±3°C Accurate, Analog Centigrade (10mV/°C) Temperature Sensor in SOT-23 Package datasheet (Rev. C) | PDF | HTML | 2025/05/20 |
| Application note | SC Temp Sensors Challenge Precision RTDs and Thermistors in Build Automation (Rev. A) | 2019/05/08 | ||
| More literature | Analog Temperature Sensors | 2013/04/18 | ||
| User guide | LMT90 User Guide | 2013/01/31 |
설계 및 개발
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| SOT-23 (DBZ) | 3 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치