LM73CIMK-0/NOPB HVAC Temperature Sensors Board Mount Temperature Sensors Digital Ts W/Smbus Interface
temperature sensor circuit
,temperature control sensor
LM73CIMK-0/NOPB HVAC Temperature Sensors Board Mount Temperature Sensors Digital Ts W/Smbus Interface
1 Features
- Single Address Pin Offers Choice of Three Selectable Addresses Per Version for a Total of Six Possible Addresses.
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SMBus and I2C-compatible Two-Wire Interface
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Supports 400-Khz Operation
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Shutdown Mode With One-shot Feature Available for Very Low Average Power Consumption
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Programmable Digital Temperature Resolution From 11 Bits to 14 Bits
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Fast Conversion Rate Ideal for Quick Power Up and Measuring Rapidly Changing Temperature
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Open-Drain ALERT Output Pin Goes Active When Temperature is Above a Programmed Temperature Limit
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Very Stable, Low-noise Digital Output
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UL Recognized Component
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Key Specifications
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– Supply Current
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– Operating
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– 320 μA (Typical)
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– 495 μA (Maximum)
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– Shutdown
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– 8 μA (Maximum)
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– 1.9 μA (Typical)
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-
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– Temperature Accuracy
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– −10°C to 80°C: ±1.0°C (Maximum)
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– −25°C to 115°C: ±1.5°C (Maximum)
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– −40°C to 150°C: ±2°C (Maximum)
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– Resolution
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– 0.25°C to 0.03125°C
– Conversion Time
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– 11-Bit (0.25°C): 14 ms (Maximum)
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– 14-Bit (0.03125°C): 112 ms (Maximum)
2 Applications
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Portable Electronics
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Notebook Computers
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Automotive
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System Thermal Management
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Office Electronics
3 Description
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.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LM73 |
SOT (6) |
2.90 mm × 1.60 mm |
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