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LMT70, LMT70A ±0.05°C Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC
SNIS187A
March 2015 – July 2015
LMT70
,
LMT70A
PRODUCTION DATA.
CONTENTS
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LMT70, LMT70A ±0.05°C Precision Analog Temperature Sensor, RTD and Precision NTC Thermistor IC
1
Features
2
Applications
3
Description
4
Wide-Range Precision Active RTD or NTC Replacement (−55°C to 150°C)
5
Revision History
6
Device Comparison Table
7
Pin Configuration and Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
ESD Ratings
8.3
Recommended Operating Conditions
8.4
Thermal Information
8.5
Electrical Characteristics
8.6
Electrical Characteristics Temperature Lookup Table (LUT)
8.7
Switching Characteristics
8.8
Typical Performance Characteristics
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Temperature Analog Output (TAO)
9.3.1.1
LMT70 Output Transfer Function
9.3.1.1.1
First Order Transfer Function
9.3.1.1.2
Second Order Transfer Function
9.3.1.1.3
Third Order Transfer Function
9.3.1.2
LMT70A TAO Matching
9.3.1.3
TAO Noise Considerations
9.3.1.4
TAO Capacitive Loads
9.3.2
TON Digital Input
9.3.3
Light Sensitivity
9.4
Device Functional Modes
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Temperature Algorithm Selection
10.2.2.2
ADC Requirements
10.2.3
Finer Resolution LUT
10.2.4
Application Curves
10.3
System Examples
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.1.1
Mounting and Temperature Conductivity
12.2
Layout Example
13
Device and Documentation Support
13.1
Related Links
13.2
Documentation Support
13.2.1
Related Documentation
13.3
Community Resources
13.4
Trademarks
13.5
Electrostatic Discharge Caution
13.6
Glossary
14
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
YFQ|4
MXBG165
Thermal pad, mechanical data (Package|Pins)
Orderable Information
snis187a_oa
snis187a_pm
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