Shenzhen Meiyuxin Technology Co., Ltd. [TI Distributor] LM73C0QDDCRQ1 11 to 14-bit digital temperature sensor with two-wire interface! ! !

Iillustrate

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

The LM73-Q1 operates over a wide temperature range (–40°C to 125°C) and is accurate to ±1.45°C from -10°C to 80°C. The LM73-Q1 includes four selectable resolution options that can be used to adjust temperature conversion time and sensitivity for optimal performance. The LM73-Q1 defaults to 11-bit mode (0.25°C/LSB) and can measure temperature up to 14ms, which is ideal for applications that require fast temperature data acquisition after power-up. In the highest resolution 14-bit mode (0.03125°C/LSB), the LM73-Q1 is optimized to sense very small temperature changes.

Any one of three unique device addresses can be selected via a single multilevel address line. An open-drain ALERT output activates filtered data and clock lines when temperature exceeds programmable limits for excellent noise tolerance and reliable communication. In addition, the LM73-Q1 has a time-out feature that automatically resets the clock and data lines if they are held low for an extended period of time. This prevents a bus lock condition without host processor intervention.

Characteristic

1• Suitable for automotive electronics applications

• Has the following AEC-Q100 qualified results

– LM73-Q1 Temperature Grade 1: -40°C to 125°C

– LM73-Q1 exceeds Human Body Model (HBM) Electrostatic Discharge (ESD) Classification Level 2

– LM73-Q1 Charged Device Model (CDM) ESD classification level C6

• An address pin can select any of three selectable addresses for each version, for a total of 6 available addresses.

• Two-wire interface compatible with SMBus and I2C

• Supports 400kHz operating frequency

• Shutdown mode with one-shot capability for very low average power consumption

• 11-bit to 14-bit programmable digital temperature resolution

• Fast slew rate for fast power-up and measuring fast-charge temperature

• Open-drain ALERT output pin activates when temperature exceeds programmed temperature limit

• Very stable low noise digital output

• UL Listed Device

• Temperature Accuracy: ±1.45°C (Maximum)

• Temperature range: -40°C to 125°C

• Conversion time

– 11 bits (0.25°C): 14ms (maximum)

– 14 bits (0.03125°C): 112ms (maximum)

• Operating Supply Current: 320µA (Typical)

• Shutdown Supply Current: 1.9 µA (Typical)

• Resolution: 0.25°C to 0.03125°C

Application

• Car Air Conditioner

• Advanced Driver Assistance Systems (ADAS)

• Air flow sensor

• Infotainment processor management

• Dashboard system

• UREA sensor

• HID lights