홈 센서 온도 센서 디지털 온도 센서
홈
센서
온도 센서
디지털 온도 센서

LM73-Q1

활성

2선 인터페이스를 지원하는 11~14비트 디지털 온도 센서

지금 주문
데이터 시트

LM73-Q1

활성
데이터 시트 지금 주문

제품 상세 정보

Local sensor accuracy (max) 1.45 Type Local Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion, UL recognized Supply current (max) (µA) 550 Temp resolution (max) (bps) 14 Remote channels (#) 0 Addresses 6 Rating Automotive
Local sensor accuracy (max) 1.45 Type Local Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 2.7 Interface type I2C, SMBus Supply voltage (max) (V) 5.5 Features ALERT, One-shot conversion, UL recognized Supply current (max) (µA) 550 Temp resolution (max) (bps) 14 Remote channels (#) 0 Addresses 6 Rating Automotive
SOT-23-THN (DDC) 6 8.12 mm² 2.9 x 2.8
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • LM73-Q1 Temperature grade 1: –40°C to 125°C
    • LM73-Q1 HBM ESD Classification Level 2
    • LM73-Q1 CDM ESD Classification Level C6
  • 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
  • Temperature Accuracy: ±1.45°C (Maximum)
  • Temperature Range: –40°C to 125°C
  • Conversion Time
    • 11-Bit (0.25°C): 14 ms (Maximum)
    • 14-Bit (0.03125°C): 112 ms (Maximum)
  • Operating Supply Current: 320 µA (Typical)
  • Shutdown Supply Current: 1.9 µA (Typical)
  • Resolution: 0.25°C to 0.03125°C
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • LM73-Q1 Temperature grade 1: –40°C to 125°C
    • LM73-Q1 HBM ESD Classification Level 2
    • LM73-Q1 CDM ESD Classification Level C6
  • 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
  • Temperature Accuracy: ±1.45°C (Maximum)
  • Temperature Range: –40°C to 125°C
  • Conversion Time
    • 11-Bit (0.25°C): 14 ms (Maximum)
    • 14-Bit (0.03125°C): 112 ms (Maximum)
  • Operating Supply Current: 320 µA (Typical)
  • Shutdown Supply Current: 1.9 µA (Typical)
  • Resolution: 0.25°C to 0.03125°C

The LM73-Q1 is a digital output temperature sensor featuring an integrated incremental Delta-Sigma ADC. The LM73-Q1 communicates with a two-wire interface that is compatible with SMBus and I2C interfaces, and the host can query the LM73-Q1 at any time to read temperature.

The LM73-Q1 operates over a wide temperature range (–40°C to 125°C) and provides ±1.45°C accuracy from –10°C to 80°C. The LM73-Q1 includes four selectable resolution options that allow the temperature conversion time and sensitivity to be adjusted for optimal performance. The LM73-Q1 defaults to 11-bit mode (0.25°C/LSB), and will measure temperature in a maximum time of 14 ms, making it ideal for applications that require temperature data very soon after power-up. In its 14-bit maximum resolution mode (0.03125°C/LSB), the LM73-Q1 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, the LM73-Q1 has a time-out feature that will automatically reset the clock and data lines, if these lines are held low for an extended period of time. This prevents a bus lock-up condition without requiring host processor intervention.

The LM73-Q1 is a digital output temperature sensor featuring an integrated incremental Delta-Sigma ADC. The LM73-Q1 communicates with a two-wire interface that is compatible with SMBus and I2C interfaces, and the host can query the LM73-Q1 at any time to read temperature.

The LM73-Q1 operates over a wide temperature range (–40°C to 125°C) and provides ±1.45°C accuracy from –10°C to 80°C. The LM73-Q1 includes four selectable resolution options that allow the temperature conversion time and sensitivity to be adjusted for optimal performance. The LM73-Q1 defaults to 11-bit mode (0.25°C/LSB), and will measure temperature in a maximum time of 14 ms, making it ideal for applications that require temperature data very soon after power-up. In its 14-bit maximum resolution mode (0.03125°C/LSB), the LM73-Q1 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, the LM73-Q1 has a time-out feature that will automatically reset the clock and data lines, if these lines are held low for an extended period of time. This prevents a bus lock-up condition without requiring host processor intervention.

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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
LM73 활성 I2C/SMBus 인터페이스를 지원하는 ±1°C 온도 센서 Commercial version of the LM73-Q1
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TMP75-Q1 활성 산업 표준 LM75 폼 팩터 및 핀아웃의 I2C/SMBus 인터페이스를 지원하는 오토모티브 온도 센서 Lower power (85 µA) I²C alternative with support for up to 8 device addresses, NIST traceable
비교 대상 장치와 유사한 기능
TMP102-Q1 활성 2.56mm2 패키지에 I2C/SMBus를 제공하는 오토모티브 ±2°C 1.4V~3.6V 디지털 온도 센서 Lower cost, smaller size and lower power alternative

기술 자료

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2개 모두 보기
유형 직함 날짜
* Data sheet LM73-Q1 2.7-V, SOT-23, 11- to 14-Bit Digital Temperature Sensor With 2-Wire Interface datasheet PDF | HTML 2016/12/06
Technical article How to maximize powertrain efficiency and reliability with high-accuracy temperatu PDF | HTML 2021/05/10

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