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See Technical Specifications

LM73C0QDDCRQ1

11- to 14-Bit Digital Temperature Sensor With 2-Wire Interface

Manufacturer:

Texas Instruments
Mfr.Part #:

LM73C0QDDCRQ1
Datasheet:

LM73C0QDDCRQ1 Datasheet (PDF)
Output Type:

Digital
Configuration:

Local
Accuracy:

+/- 1.45 C
Supply Voltage - Min:

2.7 V

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

LM73C0QDDCRQ1 General Description

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.

Key Features

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results
- LM73-Q1 Temperature grade 1: –40°C to 125°C
- LM73-Q1 HBM ESD Classification Level 2
- LM73-Q1 CDM ESD Classification Level C6
Single Address Pin Offers Choice of Three Selectable Addresses Per Version for a Total of Six Possible Addresses.
SMBus and I²C-compatible Two-Wire Interface
Supports 400-kHz Operation
Shutdown Mode With One-shot Feature Available for Very Low Average Power Consumption
Programmable Digital Temperature Resolution From 11 Bits to 14 Bits
Fast Conversion Rate Ideal for Quick Power Up and Measuring Rapidly Changing Temperature
Open-Drain ALERT Output Pin Goes Active When Temperature is Above a Programmed Temperature Limit
Very Stable, Low-noise Digital Output
UL Recognized Component
Temperature Accuracy: ±1.45°C (Maximum)
Temperature Range: –40°C to 125°C
Conversion Time
- 11-Bit (0.25°C): 14 ms (Maximum)
- 14-Bit (0.03125°C): 112 ms (Maximum)
Operating Supply Current: 320 µA (Typical)
Shutdown Supply Current: 1.9 µA (Typical)
Resolution: 0.25°C to 0.03125°C

Specifications

Product Category	Board Mount Temperature Sensors	Output Type	Digital
Configuration	Local	Accuracy	+/- 1.45 C
Supply Voltage - Min	2.7 V	Supply Voltage - Max	5.5 V
Interface Type	2-Wire, I2C, SMBus	Resolution	14 bit
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature	+ 125 C
Shutdown	Shutdown	Mounting Style	SMD/SMT
Qualification	AEC-Q100	Operating Supply Current	320 uA
Product	Temperature Sensors	Product Type	Temperature Sensor ICs
Series	LM73-Q1	Factory Pack Quantity	3000
Subcategory	Sensors	Type	Digital Temperature Sensor
Unit Weight	0.004286 oz