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.
View datasheet View product folder