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TDA6920X .. |TDA6920XSIEMENSN/a988avaiAudio/Video 7x5 Matrix Switch
TDA6920XINFINEONN/a1885avaiAudio/Video 7x5 Matrix Switch


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TDA6920X-TDA6920X ..
Audio/Video 7x5 Matrix Switch
Wireless Components
7 x 5 Video Matrix Switch
TDA 6920 Version 1.0
Specification August 1999
Edition 03.99
Published by Infineon Technologies AG i. Gr.,
SC,
Balanstraße 73,
81541 München

© InfineonTechnologiesAG i.Gr. 25.08.99.
All Rights Reserved.
Attention please!

As far as patents or other rights of third parties are concerned, liability is only assumed for components, not for applications, processes and circuits im-
plemented within components or assemblies.
The information describes the type of component and shall not be considered as assured characteristics.
Terms of delivery and rights to change design reserved.
Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest
InfineonTechnologies Office.
InfineonTechnologiesAG is an approved CECC manufacturer.
Packing

Please use the recycling operators known to you. We can also help you – get in touch with your nearest sales office. By agreement we will take packing
material back, if it is sorted. You must bear the costs of transport.
For packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs incurred.
Components used in life-support devices or systems must be expressly authorized for such purpose!

Critical components1 of the InfineonTechnologiesAG, may only be used in life-support devices or systems2 with the express written approval of the
InfineonTechnologiesAG.A critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the failure of that life-
support device or system, or to affect its safety or effectiveness of that device or system.Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sustain human life. If they
fail, it is reasonable to assume that the health of the user may be endangered.
Product Info
Product Info
General Description
The TDA 6920 switches 7 video input
sources to 5 outputs. Each output can
be switched to only one input, but one
input can be switched to all outputs.
The C-input may be combined with
one CVBS input as Y for Y+C (S-VHS)
operation. Y+C operation is selected
by bus.
Features
�Fast I2C-BUS controlled
(max. 400 kHz)Cascadable (2 bus addresses)7 CVBS inputs, 5 outputs
3 inputs with clamp disable by bus1 input selectable as Y-input
(S-VHS)1 additional C-input (S-VHS)Y+C operation for S-VHS
selected by busFully ESD protected-60 dB max. crosstalk at 5 MHz
(P-DSO-28 only)Low operating voltage of 7.5 V5V operation is possible with
reduced output signals of
max. 2 Vpp15 MHz minimum bandwidthNoise insensitive clamping inputslow impedance off condition
separate for each output
Application
�Television setsSatellite receiversVideo mixing desks
Ordering Information
Table of ContentsTable of Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12.1Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.2Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.3Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.4Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3.1Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.2Pin Definition and Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
3.3Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
3.4Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
3.5Block Diagram (P-DSO-28) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4.1Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.1.1Application Circuit P-DSO-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.1.2Application Circuit P-DSO-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4.1.3Application Circuit P-DIP-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5.1Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.1.1Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.1.2Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
5.1.3AC/DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
5.2Address selection (fast I2C-Bus) . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
5.3Data selection ( fast I2C-BUS ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
5.4Data Mode Selections (fast I2C-Bus). . . . . . . . . . . . . . . . . . . . . . . . .5-6
5.5BUS Protocol ( fast I2C-BUS ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
5.6Test Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
5.7Electrical Diagramms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9
Product Description2.1Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.2Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.3Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.4Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Product Description
2.1Overview

The TDA 6920 switches 7 video input sources to 5 outputs. Each output can be
switched to only one input, but one input can be switched to all outputs. The
C-input may be combined with one CVBS input as Y for Y+C (S-VHS)
operation. Y+C operation is selected by bus.
2.2Features
Fast I2C-BUS controlled (max. 400 kHz)Cascadable (2 bus addresses)7 CVBS inputs, 5 outputs, 3 inputs with clamp disable by bus1 input selectable as Y-input (S-VHS)1 additional C-input (S-VHS)Y+C operation for S-VHS, selected by busFully ESD protected-60 dB max. crosstalk at 5 MHz (P-DSO-28 only)Low operating voltage of 7.5 V5V operation is possible with reduced output signals of max. 2 Vpp15 MHz minimum bandwidthNoise insensitive clamping inputslow impedance off condition, separate for each output
2.3Application
Television setsSatellite receiversVideo mixing desks
Product Description
2.4Package Outlines

P-DSO-28
P-DIP-18
Functional Description3.1Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.2Pin Definition and Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
3.3Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
3.4Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
3.5Block Diagram (P-DSO-28) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Functional Description
3.1Pin Configuration

Pin_config_1.wmf
Figure 3-1Pin Configuration P-DSO-28
Pin_config_2.wmf
Figure 3-2Pin Configuration P-DIP-18
Functional Description
3.2Pin Definition and Function
Functional Description
3.3Pin Description
Functional Description
Functional Description
3.4Functional Description

The main function of the IC is to switch 7 input video sources to 5 outputs.
Each output can be switched to only one input.
It is possible to have the same input connected to several outputs.
3 of the inputs can be used as non-clamping-input, switching is controlled by
bus.
The clamping function of the other 4 inputs can be switched off by external
resistor divider.
All switching possibilities are controlled by the I2C-BUS.
All outputs can be switched to low impedance off condition by the I2C-BUS.
Driving 75 Ω load requires external transistors.
The recommended coupling capacitor at each input is 47 nF.
Each clamping input requires a 75 Ω (max. 500 Ω) termination resistor.
Operation without or with a termination resistor greater than 500 Ω causes mal-
function of the new high performance clamping circuit.
Unused input‘s should be directly grounded.
6 x 8 bits are necessary to determine one complete configuration change
(1 addressbyte, 5 databytes).
Minimum configuration change for 1 output needs 2 x 8 bit (1 addressbyte,
1 databyte).
Power on reset state: all 5 outputs switched to input 1, all inputs clamped, Y+C
off.
Functional Description
3.5Block Diagram (P-DSO-28)

Figure 3-3Block Diagram (P-DSO-28)
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