Automotive Grade, 0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface - LMT01-Q1

LMT01-Q1 (ACTIVE)

Automotive Grade, 0.5°C Accurate 2-pin Temperature Sensor with a Pulse Train Interface

 

Description

The LMT01-Q1 is a high-accuracy, 2-pin temperature sensor with an easy-to-use pulse count interface which makes it an ideal digital replacement for PTC or NTC thermistors both on and off board in automotive, industrial, and consumer markets. The LMT01-Q1 digital pulse count output and high accuracy over a wide temperature range allow pairing with any MCU without concern for integrated ADC quality or availability, while minimizing software overhead. TI’s LMT01-Q1 achieves flat ±0.5°C accuracy with very fine resolution (0.0625°C) over a wide temperature range of –20°C to 90°C without system calibration or hardware/software compensation.

Unlike other digital IC temperature sensors, LMT01-Q1’s single wire interface is designed to directly interface with a GPIO or comparator input, thereby simplifying hardware implementation. Similarly, the LMT01's integrated EMI suppression and simple 2-pin architecture makes it ideal for on-board and off-board temperature sensing. The LMT01-Q1 offers all the simplicity of analog NTC or PTC thermistors with the added benefits of a digital interface, wide specified performance, EMI immunity, and minimum processor resources.

Features

  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 0: –40°C to +150°C
    • Temperature Grade 1: –40°C to +125°C
    • HMB ESD Component Classification Level 2
    • CDM ESD Component Classification Level C5
  • High Accuracy Over –40°C to 150°C Wide Temperature Range (–20°C to 90°C: ±0.5°C (max), 90°C to 150°C: ±0.62°C (max), –40°C to –20°C: ±0.7°C (max))
  • Precision Digital Temperature Measurement Simplified in a 2-Pin Package
  • Single-wire Pulse Count Digital Output Easily Read by Processor
  • Pulse Count Proportional to Temperature with 0.0625°C Resolution
  • Communication Frequency: 88 kHz
  • Continuous Temperature Update Every 100 ms
  • Conversion Current: 34 µA
  • Floating 2 V to 5.5 V (VP–VN) Supply Operation with Integrated EMI Immunity
  • 2-Pin Package Offering: TO-92/LPG (3.1 mm × 4 mm × 1.5 mm) – ½ the Size of Traditional TO-92

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Parametrics Compare all products in IR & Probe Temperature Sensors

 
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)
Interface
Special Features
LMT01-Q1 TMP107
0.5    0.4   
13    14   
-40 to 125
-40 to 150   
-55 to 125   
2    1.7   
5.5    5.5   
34    16   
1-wire    UART   
  Shutdown   

Other qualified versions of LMT01-Q1

Version Part Number Definition
Catalog LMT01 TI's standard catalog product