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LDC1000-Q1

SLOS886B – SEPTEMBER 2014 – REVISED OCTOBER 2014

LDC1000-Q1 Inductance to Digital Converter

1 Features

3 Description

Inductive

sensing

is

a

contactless,

short-range

1

•

Qualified for Automotive Applications

sensing technology that enables low-cost, high-

•

AEC-Q100 Qualified With the Following Results:

resolution sensing of conductive targets in the

–

Device Temperature Grade 0: –40°C to 150°C

presence of dust, dirt, oil, and moisture, making this

Ambient Operating Temperature Range E

technology extremely reliable in harsh environments.

Using a coil that can be created for example on a

–

Device Temperature Grade 1: –40°C to 125°C

PCB as a sensing element, the LDC1000-Q1 device

Ambient Operating Temperature Range Q

enables ultra-low cost system solutions.

–

Device HBM ESD Classification Level 2

Inductive

sensing

technology

enables

precise

–

Device CDM ESD Classification Level C6

measurement

of

linear

or

angular

position,

•

Magnet-Free Operation

displacement, motion, compression, vibration, metal

composition, and many other applications in markets

•

Sub-Micron Precision

including automotive, consumer, computer, industrial,

•

Adjustable Sensing Range (through Coil Design)

medical, and communications. Inductive sensing

•

Lower System Cost

offers better performance and reliability at lower cost

•

Remote Sensor Placement (Decoupling the LDC

than other competitive solutions.

from Harsh Environments)

The LDC1000-Q1 device is the first automotive-

•

High Durability (by Virtue of Contact-Less

qualified LDC, offering the benefits of inductive

Operation)

sensing in a low-power, small-footprint solution. The

product is available in a 16-pin TSSOP package and

•

Insensitivity to Environmental Interference (such

offers several modes of operation. An SPI interface

as Dirt, Dust, Water, Oil)

simplifies connection to an MCU.

•

Supply Voltage, Analog: 4.75 to 5.25 V

•

Supply Voltage, IO: 1.8 to 5.25 V

Device Information(1)

•

Supply Current (Without LC Tank): 1.7 mA

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

LDC1000-Q1

TSSOP (16)

5.00 mm × 4.40 mm

•

L Resolution: 24-bit

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

•

LC Frequency Range: 5 kHz to 5 MHz

Typical Application — Axial Distance Sensing

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

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.