Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

ISO7221CDG4 Datasheet(PDF) 19 Page - Texas Instruments

Click here to check the latest version.
Part # ISO7221CDG4
Description  Dual Channel Digital Isolators
Download  35 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ISO7221CDG4 Datasheet(HTML) 19 Page - Texas Instruments

Back Button ISO7221CDG4 Datasheet HTML 15Page - Texas Instruments ISO7221CDG4 Datasheet HTML 16Page - Texas Instruments ISO7221CDG4 Datasheet HTML 17Page - Texas Instruments ISO7221CDG4 Datasheet HTML 18Page - Texas Instruments ISO7221CDG4 Datasheet HTML 19Page - Texas Instruments ISO7221CDG4 Datasheet HTML 20Page - Texas Instruments ISO7221CDG4 Datasheet HTML 21Page - Texas Instruments ISO7221CDG4 Datasheet HTML 22Page - Texas Instruments ISO7221CDG4 Datasheet HTML 23Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 19 / 35 page
background image
OSC
PWM
VREF
LPF
VREF
DCL
OUT
IN
0
1 S
Isolation Barrier
Low J Frequency
Channel
(DC...100 kbps)
High J Frequency
Channel
(100 kbps...150 Mbps)
ISO7220A, ISO7220B, ISO7220C, ISO7220M
ISO7221A, ISO7221B, ISO7221C, ISO7221M
www.ti.com
SLLS755N – JULY 2006 – REVISED SEPTEMBER 2015
8 Detailed Description
8.1 Overview
The isolator in the Functional Block Diagram is based on a capacitive isolation barrier technique. The I/O channel
of the ISO7220x and ISO7221x devices consists of two internal data channels, a high-frequency channel (HF)
with a bandwidth from 100 kbps up to 150 Mbps, and a low-frequency channel (LF) covering the range from 100
kbps down to DC. In principle, a single-ended input signal entering the HF-channel is split into a differential
signal via the inverter gate at the input. The following capacitor-resistor networks differentiate the signal into
transients, which then are converted into differential pulses by two comparators. The comparator outputs drive a
NOR-gate flip-flop whose output feeds an output multiplexer. A decision logic (DCL) at the driving output of the
flip-flop measures the durations between signal transients. If the duration between two consecutive transients
exceeds a certain time limit, (as in the case of a low-frequency signal), the DCL forces the output-multiplexer to
switch from the high-frequency to the low-frequency channel.
Because low-frequency input signals require the internal capacitors to assume prohibitively large values, these
signals are pulse-width modulated (PWM) with the carrier frequency of an internal oscillator, thus creating a
sufficiently high frequency signal, capable of passing the capacitive barrier. As the input is modulated, a low-pass
filter (LPF) is needed to remove the high-frequency carrier from the actual data before passing it on to the output
multiplexer.
8.2 Functional Block Diagram
Copyright © 2006–2015, Texas Instruments Incorporated
Submit Documentation Feedback
19
Product Folder Links: ISO7220A ISO7220B ISO7220C ISO7220M ISO7221A ISO7221B ISO7221C ISO7221M


Similar Part No. - ISO7221CDG4

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
ISO7221CDG4 TI-ISO7221CDG4 Datasheet
734Kb / 25P
[Old version datasheet]   DUAL DIGITAL ISOLATORS
ISO7221CDG4 TI-ISO7221CDG4 Datasheet
827Kb / 26P
[Old version datasheet]   DUAL DIGITAL ISOLATORS
More results

Similar Description - ISO7221CDG4

ManufacturerPart #DatasheetDescription
logo
Analog Devices
ADUM1200 AD-ADUM1200 Datasheet
704Kb / 20P
   Dual-Channel Digital Isolators
REV. B
ADUM1200 AD-ADUM1200_15 Datasheet
444Kb / 28P
   Dual-Channel Digital Isolators
Rev. I
ADUM1200UR-EP AD-ADUM1200UR-EP Datasheet
444Kb / 28P
   Dual-Channel Digital Isolators
Rev. I
ADUM1201 AD-ADUM1201_15 Datasheet
444Kb / 28P
   Dual-Channel Digital Isolators
Rev. I
ADUM1200 AD-ADUM1200_12 Datasheet
444Kb / 28P
   Dual-Channel Digital Isolators
Rev. I
ADUM1240 AD-ADUM1240 Datasheet
470Kb / 24P
   Micropower, Dual-Channel Digital Isolators
ADUM1240 AD-ADUM1240_V01 Datasheet
491Kb / 24P
   Micropower, Dual-Channel Digital Isolators
Rev. B
logo
Silicon Laboratories
SI8410 SILABS-SI8410 Datasheet
571Kb / 26P
   SINGLE & DUAL-CHANNEL DIGITAL ISOLATORS
logo
Texas Instruments
ISO7220A TI-ISO7220A_08 Datasheet
827Kb / 26P
[Old version datasheet]   DUAL DIGITAL ISOLATORS
ISO7220A TI-ISO7220A_10 Datasheet
827Kb / 28P
[Old version datasheet]   DUAL DIGITAL ISOLATORS
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com