LMT01-Q1 Datasheet, PDF (1/28 Pages) Texas Instruments – Accurate 2-Pin Digital Output Temperature Sensor with Pulse Count Interface

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LMT01-Q1
SNIS192 – NOVEMBER 2016
LMT01-Q1 0.5°C Accurate 2-Pin Digital Output Temperature Sensor with Pulse Count
Interface
1 Features
•1 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
2 Applications
• Automotive
• Digital Output Wired Probes
• HVAC
• Power Supplies
• Battery Management
3 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.
PART NUMBER
LMT01LPG
Device Information
PACKAGE
BODY SIZE (NOM)
TO-92 / LPG (2) 4.00 mm × 3.15 mm
1. For all available packages, see the orderable addendum at
the end of the data sheet.
2-Pin IC Temperature Sensor
VP
LMT01
Up to 2m
Min 2.0V
V_DD: 3.0V to 5.5V
GPIO
MCU/
FPGA/
ASIC
VN
Power Off
LMT01 Pulse Count Interface
Conversion Time
ADC Conversion Result
GPIO/
COMP
Power On
1
LMT01-Q1 Accuracy
1.0
0.8
Max Limit
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
Min Limit
-1.0
±50 ±25 0
25 50 75 100 125 150
LMT01 Junction Temperaure (ƒC)
C014
Typical units plotted in center of curve.
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.