LDC1051 Converter Datasheet

LDC1051 Datasheet, PDF, Equivalent


Part Number

LDC1051

Description

8-bit Rp only Inductance-to-Digital Converter

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download LDC1051 Datasheet


LDC1051
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LDC1051
SNOSCY0 – MARCH 2014
LDC1051: 8-bit Rp only Inductance-to-Digital Converter with SPI
1 Features
1 Remote Sensor Placement (Decoupling The LDC
From Harsh Environments)
• High Durability (By Virtue Of Contactless
Operation)
• Higher Flexibility For System Design (Using Coils
Or Springs As Sensors)
• Insensitive to Non-conductive Environmental
Interferers (such As Dirt, Dust, Oil etc.)
• Magnet-free Operation
• Supply Voltage: 5 V, typ
• Supply Voltage, IO: 1.8V to 5.5V
• Stand-by Current: 250uA, typ
• Rp Resolution: 8-bit
• LC Frequency Range: 5kHz to 5MHz
Axial Distance Sensing Application
Application Schematic
2 Applications
5V
LDO
VIO
5V
• Proximity Sensing
• Level Sensing
VIO
MOSI
VIO VDD
SDI INA
• Lateral Position Sensing
MCU
MISO
SCLK
GPIO
SDO
SCLK
CSB LDC1051
INB
Sensor
3 Description
INT/GPIO
INTB
CFA
CFB
Inductive sensing is a contactless, short-range
DGND
GND
sensing technology enabling high-resolution and low-
DGND CLDO
DAP
cost position sensing of conductive targets, even in
harsh environments. Using a coil or spring as a
sensor, the LDC1051 inductance-to-digital converter
DGND
DGND
AGND
provides system designers a way to achieve high
performance and reliability at a lower system cost
than other competing solutions.
Rp vs Distance With 14mm PCB Coil
14
The LDC1051 is pin compatible with the LDC1000
(16-bit Rp/24-bit L) and the LDC1041 (8-bit Rp/24-bit
L). This family of devices offers system designers
different resolution options based on their application
and system requirements.
The LDC1051 is available in a 5mm x 4mm WSON-
16 package. Device programming via SPI allows for
easy configuration using a microcontroller.
12
10
8
6
4
2
Device Information
ORDER NUMBER
PACKAGE
BODY SIZE
LDC1051NHRT
WSON (16)
5 mm × 4 mm
LDC1051NHRR
WSON (16)
5 mm × 4 mm
LDC1051NHRJ
WSON (16)
5 mm × 4 mm
0
012345678
Distance (mm)
C002
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.

LDC1051
LDC1051
SNOSCY0 – MARCH 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Terminal 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........................................ 11
7.5 Programming........................................................... 14
7.6 Register Map and Description................................. 15
8 Applications and Implementation ...................... 20
8.1 Application Information............................................ 20
8.2 Typical Applications ................................................ 21
9 Power Supply Recommendations...................... 25
10 Layout................................................................... 25
10.1 Layout Guidelines ................................................. 25
10.2 Layout Example .................................................... 26
11 Device and Documentation Support ................. 27
11.1 Trademarks ........................................................... 27
11.2 Electrostatic Discharge Caution ............................ 27
11.3 Glossary ................................................................ 27
12 Mechanical, Packaging, and Orderable
Information ........................................................... 27
4 Revision History
DATE
March 2014
REVISION
*
NOTES
Initial release.
2 Submit Documentation Feedback
Product Folder Links: LDC1051
Copyright © 2014, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LDC1051 SNOSCY0 – MARCH 20 14 LDC1051: 8-bit Rp only Inductance-to -Digital Converter with SPI 1 Features •1 Remote Sensor Placement (Decoupli ng The LDC From Harsh Environments) • High Durability (By Virtue Of Contactl ess Operation) • Higher Flexibility F or System Design (Using Coils Or Spring s As Sensors) • Insensitive to Non-co nductive Environmental Interferers (suc h As Dirt, Dust, Oil etc.) • Magnet-f ree Operation • Supply Voltage: 5 V, typ • Supply Voltage, IO: 1.8V to 5.5 V • Stand-by Current: 250uA, typ • Rp Resolution: 8-bit • LC Frequency R ange: 5kHz to 5MHz Axial Distance Sens ing Application Application Schematic 2 Applications 5V LDO VIO 5V • P roximity Sensing • Level Sensing VIO MOSI VIO VDD SDI INA • Lateral Pos ition Sensing MCU MISO SCLK GPIO SDO SCLK CSB LDC1051 INB Sensor 3 Descr iption INT/GPIO INTB CFA CFB Inductive sensing is a contactless, short-range DGND GND.
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