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LM73 I2C Temperature Sensor (SOT-23-6)

LM73 I2C Temperature Sensor (SOT-23-6)

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.
Use this along with our SOT23-DIP breakout to connect to your project and get accurate temperature readings to ±1.0°C accuracy from -10°C to 80°C with a resolution up to 0.03125°C. Works with 3.3V & 5V.

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SEN-00130

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Manufacturer: Texas Instruments

Model Number: 926-LM73CIMK-0/NOPB

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-23 package, the LM73 occupies very little board area while operating over a wide temperature range (-40°C to 150°C) and providing ±1.0°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.

Key Specifications

■ Supply Voltage 2.7V to 5.5V

■ Supply Current operating 320 μA (typ), 495 μA (max)

                                shutdown 8 μA (max), 1.9 μA (typ)

■ Temperature −10°C to 80°C ±1.0°C (max)

Accuracy −25°C to 115°C ±1.5°C (max)

                 −40°C to 150°C ±2.0°C (max)

■ Resolution 0.25°C to 0.03125°C

■ Conversion Time 11-bit (0.25°C) 14 ms (max)

                                    14-bit (0.03125°C) 112 ms (max)

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