AD8194ACPZ-R7 Analog Devices Inc, AD8194ACPZ-R7 Datasheet

IC,Telecom Switching Circuit,LLCC,32PIN,PLASTIC

AD8194ACPZ-R7

Manufacturer Part Number
AD8194ACPZ-R7
Description
IC,Telecom Switching Circuit,LLCC,32PIN,PLASTIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8194ACPZ-R7

Function
Switch
Circuit
4 x 2:1
Voltage Supply Source
Single Supply
Voltage - Supply, Single/dual (±)
3 V ~ 3.6 V
Current - Supply
50mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-LFCSP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
2 inputs, 1 output HDMI/DVI high speed signal switch
Pin-to-pin compatible with the AD8193
Enables HDMI 1.3-compliant receiver
Standards compliant: HDMI receiver, DVI
32-lead, 5 mm × 5 mm, RoHS-compliant LFCSP
APPLICATIONS
Advanced television (HDTV) sets
Multiple input displays
Projectors
A/V receivers
Set-top boxes
GENERAL DESCRIPTION
The AD8194 is a low cost quad 2:1 TMDS® switch for high
speed HDMI™/DVI video applications. The AD8194 features
equalized inputs, ideal for systems with long cable runs. Its
primary function is to switch the high speed signals from one
of two single-link (HDMI or DVI) sources to the single-link
output. The AD8194 is a fully buffered switch solution with 50 Ω
input and output terminations, providing full-swing output
signal recovery and minimizing reflections for improved system
signal integrity.
The AD8194 is provided in a space-saving, 32-lead, LFCSP,
surface-mount, RoHS-compliant, plastic package and is specified
to operate over the −40°C to +85°C temperature range.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
4 TMDS channels per input/output
Supports 250 Mbps to 2.25 Gbps data rates
Supports 25 MHz to 225 MHz pixel clocks
Fully buffered unidirectional inputs/outputs
Equalized inputs for operation with long HDMI cables
Matched 50 Ω input and output on-chip terminations
Low added jitter
Single-supply operation (3.3 V)
(20 m at 2.25 Gbps)
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
PRODUCT HIGHLIGHTS
1.
2.
3.
4.
5.
6.
IP_A[3:0]
IN_A[3:0]
IP_B[3:0]
IN_B[3:0]
S_SEL
SET-TOP BOX
Data supports rates up to 2.25 Gbps, enabling greater than
1080p deep color (12-bit color) HDMI formats and greater
than UXGA (1600 × 2300) DVI resolutions.
Fully buffered inputs and outputs.
Input cable equalizer enables use of long cables at the
input. For a typical 24 AWG cable, the AD8194 compen-
sates for more than 20 m at data rates up to 2.25 Gbps.
Matched 50 Ω on-chip input and output terminations
improve system signal integrity.
Single-pin source select bit.
Low added jitter.
VTTI
VTTI
Buffered 2:1 TMDS Switch
+
+
Figure 2. Typical AD8194 Application for HDTV Sets
FUNCTIONAL BLOCK DIAGRAM
4
4
4
4
TYPICAL APPLICATION
HDTV SET
HIGH SPEED
EQ
©2007 Analog Devices, Inc. All rights reserved.
RECEIVER
AD8194
with Equalization
AVCC
Figure 1.
HDMI
CONTROL
SWITCH
LOGIC
CORE
AVEE
BUFFERED
Tx
AD8194
AD8194
4
4
DVD PLAYER
www.analog.com
+
VTTO
OP[3:0]
ON[3:0]

Related parts for AD8194ACPZ-R7

AD8194ACPZ-R7 Summary of contents

Page 1

FEATURES 2 inputs, 1 output HDMI/DVI high speed signal switch Pin-to-pin compatible with the AD8193 Enables HDMI 1.3-compliant receiver 4 TMDS channels per input/output Supports 250 Mbps to 2.25 Gbps data rates Supports 25 MHz to 225 MHz pixel clocks ...

Page 2

AD8194 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 Typical Application........................................................................... 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 Thermal Resistance ...................................................................... 4 Maximum ...

Page 3

SPECIFICATIONS T = 27°C, AVCC = 3.3 V, VTTI = 3.3 V, VTTO = 3.3 V, AVEE = 0 V, differential input swing = 1000 mV, pattern = PRBS 2 A data rate = 2.25 Gbps, TMDS outputs terminated with ...

Page 4

AD8194 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Rating AVCC to AVEE 3.7 V VTTI AVCC + 0.6 V VTTO AVCC + 0.6 V Internal Power Dissipation 1.2 W High Speed Input Voltage AVCC − 1.4 V < V High Speed ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS NOTES 1. THE AD8194 LFCSP HAS AN EXPOSED PADDLE (ePAD) ON THE UNDERSIDE OF THE PACKAGE, WHICH AIDS IN HEAT DISSIPATION. THE ePAD MUST BE ELECTRICALLY CONNECTED TO THE AVEE SUPPLY PLANE TO MEET THERMAL ...

Page 6

AD8194 TYPICAL PERFORMANCE CHARACTERISTICS T = 27°C, AVCC = 3.3 V, VTTI = 3.3 V, VTTO = 3.3 V, AVEE = 0 V, differential input swing = 1000 mV, pattern = PRBS 2 A data rate = 2.25 Gbps, TMDS ...

Page 7

T = 27°C, AVCC = 3.3 V, VTTI = 3.3 V, VTTO = 3.3 V, AVEE = 0 V, differential input swing = 1000 mV, pattern = PRBS 2 A data rate = 2.25 Gbps, TMDS outputs terminated with external ...

Page 8

AD8194 T = 27°C, AVCC = 3.3 V, VTTI = 3.3 V, VTTO = 3.3 V, AVEE = 0 V, differential input swing = 1000 mV, pattern = PRBS 2 A data rate = 2.25 Gbps, TMDS outputs terminated with ...

Page 9

THEORY OF OPERATION INTRODUCTION The primary function of the AD8194 is to switch the high speed signals from one of two (HDMI or DVI) single-link sources to one output. Each source group consists of four differential, high speed channels. The ...

Page 10

AD8194 SWITCHING MODE The source selector pin, S_SEL, is used to select which of the two input groups is routed to the output. Source A is selected when S_SEL is pulled up to logic high, and Source B is selected ...

Page 11

APPLICATION NOTES SWITCHING HIGH SPEED SIGNALS The AD8194 is a quad 2:1 TMDS switch that is used to switch the high speed signals of two input HDMI links to a single HDMI output. SWITCHING LOW SPEED SIGNALS Because the AD8194 ...

Page 12

AD8194 Both traces of a given differential pair must be equal in length to minimize intrapair skew. Maintaining the physical symmetry of a differential pair is integral to ensuring its signal integrity; excessive intrapair skew can introduce jitter through duty ...

Page 13

Auxiliary Control Signals There are four single-ended control signals associated with each source or sink in an HDMI/DVI application. These are hot plug detect (HPD), consumer electronics control (CEC), and two display data channel (DDC) lines. The two signals on ...

Page 14

AD8194 Evaluation Board The AD8194 evaluation board illustrates one way to implement a 2:1 HDMI link switch with an AD8194 and a CMOS switch. The AD8194 evaluation board deviates from a typical application in that it uses an HDMI connector ...

Page 15

Figure 26 shows the layout of the TMDS traces. These are 100 Ω differential, controlled-impedance traces. Serpentine traces are used for some of the paths to match the lengths within a group of four. The gray traces are routed on ...

Page 16

... BE BENEFICIAL IN HIGH TEMPERATURE ENVIRONMENTS. ORDERING GUIDE Temperature Model Range 1 AD8194ACPZ −40°C to +85°C 1 AD8194ACPZ-R7 −40°C to +85°C 1 AD8194-EVALZ RoHS Compliant Part. ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07004-0-11/07(0) 5 ...

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