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ISO6763FDWR Datasheet(PDF) 20 Page - Texas Instruments

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Part # ISO6763FDWR
Description  ISO6760L Six-Channel Reinforced Digital Isolators with Integrated Interlock and Robust EMC
PDF  44 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ISO6763FDWR Datasheet(HTML) 20 Page - Texas Instruments

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8 Detailed Description
8.1 Overview
The ISO6760L family of devices have an ON-OFF keying (OOK) modulation scheme to transmit the digital data
across a silicon dioxide based isolation barrier. The transmitter sends a high frequency carrier across the barrier
to represent one digital state and sends no signal to represent the other digital state. The receiver demodulates
the signal after advanced signal conditioning and produces the output which goes through an interlock stage
before an output buffer. The ISO6760L family offers two options, a standard non-inverting channel, ISO6760L,
and a channel inverting ISO6760LN. The two offerings make the ISO6760L family compatable with historical
optocoupler based solutions. The ISO6760L devices also incorporate advanced circuit techniques to maximize
the CMTI performance and minimize the radiated emissions due to the high frequency carrier and IO buffer
switching. The conceptual block diagram of a digital capacitive isolator, Figure 8-1, shows a functional block
diagram of a typical channel.
8.2 Functional Block Diagram
TX IN
Oscillator
OOK
Modulation
Transmitter
Emissions
Reduction
Techniques
TX Signal
Conditioning
Envelope
Detection
RX Signal
Conditioning
Receiver
EN
RX OUT
SiO2 based
Capacitive
Isolation
Barrier
Copyright © 2016, Texas Instruments Incorporated
Figure 8-1. Conceptual Block Diagram of a Digital Capacitive Isolator
Figure 8-2 shows a conceptual detail of how the ON-OFF keying scheme works.
TX IN
RX OUT
Carrier signal through
isolation barrier
Figure 8-2. On-Off Keying (OOK) Based Modulation Scheme
ISO6760L
SLLSFO3 – DECEMBER 2021
www.ti.com
20
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Copyright © 2021 Texas Instruments Incorporated
Product Folder Links: ISO6760L



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