LDC1000-Q1 Converter Datasheet

LDC1000-Q1 Datasheet, PDF, Equivalent


Part Number

LDC1000-Q1

Description

Inductance to Digital Converter

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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LDC1000-Q1
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LDC1000-Q1
SLOS886B – SEPTEMBER 2014 – REVISED OCTOBER 2014
LDC1000-Q1 Inductance to Digital Converter
1 Features
1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 0: –40°C to 150°C
Ambient Operating Temperature Range E
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range Q
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C6
• Magnet-Free Operation
• Sub-Micron Precision
• Adjustable Sensing Range (through Coil Design)
• Lower System Cost
• Remote Sensor Placement (Decoupling the LDC
from Harsh Environments)
• High Durability (by Virtue of Contact-Less
Operation)
• Insensitivity to Environmental Interference (such
as Dirt, Dust, Water, Oil)
• Supply Voltage, Analog: 4.75 to 5.25 V
• Supply Voltage, IO: 1.8 to 5.25 V
• Supply Current (Without LC Tank): 1.7 mA
• RP Resolution: 16-bit
• L Resolution: 24-bit
• LC Frequency Range: 5 kHz to 5 MHz
2 Applications
• Drive-by-Wire Systems
• Gear-Tooth Counting
• Flow Meters
• Push-Button Switches
• Rotational Position Sensor
• Linear Position Sensor
• Pedal Position Sensor
• Throttle Position Sensor
3 Description
Inductive sensing is a contactless, short-range
sensing technology that enables low-cost, high-
resolution sensing of conductive targets in the
presence of dust, dirt, oil, and moisture, making this
technology extremely reliable in harsh environments.
Using a coil that can be created for example on a
PCB as a sensing element, the LDC1000-Q1 device
enables ultra-low cost system solutions.
Inductive sensing technology enables precise
measurement of linear or angular position,
displacement, motion, compression, vibration, metal
composition, and many other applications in markets
including automotive, consumer, computer, industrial,
medical, and communications. Inductive sensing
offers better performance and reliability at lower cost
than other competitive solutions.
The LDC1000-Q1 device is the first automotive-
qualified LDC, offering the benefits of inductive
sensing in a low-power, small-footprint solution. The
product is available in a 16-pin TSSOP package and
offers several modes of operation. An SPI interface
simplifies connection to an MCU.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LDC1000-Q1
TSSOP (16)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application — Axial Distance Sensing
0.25
0.5
Distance
0.75
1
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.

LDC1000-Q1
LDC1000-Q1
SLOS886B – SEPTEMBER 2014 – REVISED OCTOBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 Handling Ratings....................................................... 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Timing Requirements ................................................ 6
6.7 Typical Characteristics .............................................. 7
7 Detailed Description .............................................. 8
7.1 Overview ................................................................... 8
7.2 Functional Block Diagram ......................................... 8
7.3 Feature Description................................................... 8
7.4 Device Functional Modes........................................ 12
7.5 Programming........................................................... 14
7.6 Register Map........................................................... 16
8 Application and Implementation ........................ 26
8.1 Application Information............................................ 26
8.2 Typical Application ................................................. 28
9 Power Supply Recommendations...................... 32
10 Layout................................................................... 32
10.1 Layout Guidelines ................................................. 32
10.2 Layout Example .................................................... 33
11 Device and Documentation Support ................. 34
11.1 Trademarks ........................................................... 34
11.2 Electrostatic Discharge Caution ............................ 34
11.3 Glossary ................................................................ 34
12 Mechanical, Packaging, and Orderable
Information ........................................................... 34
4 Revision History
Changes from Revision A (September 2014) to Revision B
Page
• Changed pin configuration image and removed DAP from Pin Functions table .................................................................... 3
Changes from Original (September 2014) to Revision A
Page
• Changed the device status from Product Preview to Production Data ................................................................................. 1
2 Submit Documentation Feedback
Product Folder Links: LDC1000-Q1
Copyright © 2014, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LDC1000-Q1 SLOS886B – SEPT EMBER 2014 – REVISED OCTOBER 2014 LDC 1000-Q1 Inductance to Digital Converter 1 Features •1 Qualified for Automot ive Applications • AEC-Q100 Qualified With the Following Results: – Device Temperature Grade 0: –40°C to 150° C Ambient Operating Temperature Range E – Device Temperature Grade 1: –40 C to 125°C Ambient Operating Temperat ure Range Q – Device HBM ESD Classifi cation Level 2 – Device CDM ESD Class ification Level C6 • Magnet-Free Oper ation • Sub-Micron Precision • Adju stable Sensing Range (through Coil Desi gn) • Lower System Cost • Remote Se nsor Placement (Decoupling the LDC from Harsh Environments) • High Durabilit y (by Virtue of Contact-Less Operation) • Insensitivity to Environmental Int erference (such as Dirt, Dust, Water, O il) • Supply Voltage, Analog: 4.75 to 5.25 V • Supply Voltage, IO: 1.8 to 5.25 V • Supply Current (Without LC Tank): 1.7 mA • RP Resolution:.
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