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.
|Local Sensor Accuracy (Max) (+/- C)|
|Temp Resolution (Max) (bits)|
|Operating Temperature Range (C)|
|Supply Voltage (Min) (V)|
|Supply Voltage (Max) (V)|
|Supply Current (Typ) (uA)|
|Supply Current (Max) (uA)|
|Package Size: mm2:W x L (PKG)|
|Iq (Typ) (uA)|
|I2C, SMBus, 2-Wire|
|-40 to 125|
|Configurable Resolution, Programmable Alert, One-Shot Conversion, Shutdown|
|6SOT-23-THIN: 8 mm2: 2.8 x 2.9(SOT-23-THIN)|
|Catalog||LM73||TI's standard catalog product|