Rohm BA7654F Single circuit video signal switcher Datasheet

TECHNICAL NOTE
High-performance Video Signal Switchers
Single Circuit
Video Signal Switcher
BA7654F, BA7653AF/AFV ,BA7652AF
Description
The BA7654F, BA7653AF/AFV, or BA7652AF is a video signal (display signal) switch containing one 2-input or 3-input
circuit.
Each of the input pin formats is “sync-tip clamp input” that matches the synchronous tips of video signals (display signals) to
the same potential. The inputs have an high input impedance configuration, in which they can utilize a small clamp capacitor
(0.01 F (FZ) ceramic capacitor is recommended).
Features
1) Low value clamp capacitance can be used (Min. 3000 pF Recommended 0.01ǴF (FZ) ceramic capacitor)
2) Low voltage operation is possible (Operating range 4.0㨪7.0V)
3) Superimposed can be applied since switching speed of SW is fast and there is little switching noise (Typ. 70ns)
4) Low power consumption (Typ. 25mW when Vcc=5V)
5) Large dynamic range (Typ. 3.1VP-P when Vcc=5V)
6) Good frequency characteristics (Typ. 10 MHz 0 dB)
7) Low interchannel crosstalk (Typ. –70 dB)
8) Voltage can be applied to the CTL pin without a VCC voltage.
9) Built-in mute function (BA7652AF)
Applications
VCR, TV, and other applications that use display signals.
Product lineup
Part No.
BA7654F
BA7653AF/AFV
BA7652AF
Input type
2 in 1 Circuit
3 in 1 Circuit
3 in 1 Circuit
Mute
㧙
㧙
٤
Supply voltage(V)
4.0 㨪 7.0
Aug.2008
Absolute maximum ratings㧔Ta=25͠㧕
Parameter
Symbol
Supply voltage
Limits
BA7653AF
BA7653AFV
9
BA7654F
VCC
BA7652AF
Unit
V
Power dissipation
Pd
500*1
500*1
350*2
500*1
mW
Operating temperature
Topr
-25㨪+75
-30㨪+80
-30㨪+80
-30㨪+80
͠
Storage temperature
Tstg
-55㨪+125
͠
*1 Reduce by 5.0mW/qC over 25qC, when mounted on a 50mm˜50mm PCB board.(BA7654F, BA7653AF, BA7652AF)
2
* Reduce by 3.5mW/qC over 25qC, when mounted on a 50mm˜50mm PCB board.(BA7653AFV)
Operating range㧔Ta=25͠㧕
Parameter
Symbol
Limits
Unit
Supply voltage
VCC
4.0 㨪 7.0
Note: This IC is not designed to be radiation-resistant.
V
Electrical characteristics㧔Unless otherwise noted, Ta=25͠, Vcc=5.0V㧕
Parameter
Circuit current
Maximum output level
Voltage gain
Inter channel crosstalk
Frequency characteristics
CTL switching voltage
Symbol
ICC
Vom
GV
Cta
Cf
VTH L
VTH H
Min.
2.7
2.6
-0.5
㧙
-3.0
㧙
2.5
Typ.
5.0
3.1
0
-70
0
㧙
㧙
Max.
8.2
㧙
+0.5
㧙
+1.0
1.0
㧙
Unit
mA
VP-P
dB
dB
dB
V
Conditions
f=1kHz, THD=1.0㧑
f=1MHz, VIN=1.0VP-P
f=4.43MHz, VIN=1.0VP-P
f=10MHz/1MHz, VIN=1.0VP-P
VTH =㧔Vcc-0.75㧕˜0.44
Guaranteed design parameters (Unless otherwise noted, Ta=25͠, Vcc=5.0V㧕
Parameter
Differential phase
Differential gain
Symbol
DG
DP
Min.
㧙
㧙
Typ.
0
0.5
Max.
0.5
1.0
Unit
㧑
deg
2/8
Conditions
VIN=1.0VP-P, standard staircase signal
VIN=1.0VP-P, standard staircase signal
Block diagram
IN1
1
8
GND
CTL
2
7
OUT
IN2
3
6
VCC
5
Open.
Logic
GND
4
Fig.1
BA7654F
Fig.2
Fig.3
BA7653AF/AFV
BA7652AF
Control Pin Settings
BA7654F
CTL
L
H
OUT
IN1
IN2
BA7653AF/AFV
CTLa
L
H
L
H
CTLb
L
L
H
H
BA7652AF
OUT
IN1
IN2
IN3
IN3
3/8
㩷
㩷
CTLa
L
H
L
H
CTLb
L
L
H
H
OUT
IN1
IN2
IN3
MUTE
Pin descriptions 1/2 (BA7654F)
BA7654F
Pin No.
Pin name
1
IN1
DC voltage
㧔Vcc=5V㧕
Input/output
impedance
1.65V
10Mǡ or more
(3)
(IN2)
2
CTL
㧙
㧙
GND
0V
㧙
5
N.C.
open
open
6
Vcc
5V
㧙
7
OUT
0.95V
26ǡ
Equivalent circuit
IN1
(IN2)
CTL
4
(8)
4/8
㧙
Pin descriptions 2/2 (BA7653AF/53AFV/52AF)
BA7653AF/53AFV/52AF
Pin No.
Pin name
DC voltage
㧔Vcc=5V㧕
Input/output
impedance
1
(3)
(5)
IN1
(IN2)
(IN3)
1.65V
10Mǡ or more
2
CTLa
㧙
㧙
4
CTLb
㧙
㧙
6
Vcc
5.0V
㧙
7
OUT
0.95V
26ǡ
8
GND
0V
㧙
5/8
Equivalent circuit
IN1
(IN2)
(IN3)
CTLa
Application circuit 1/2 㧔BA7654F㧕
Vcc
Vcc
BA7654F
BA7654F
0.01 ٜ
0.01uF
C.VideoIN
IN
C.Video
11
IN 1
IN1
Vcc
Vcc
6
6
47 ٜ
47uF
0.01 ٜ
0.01uF
C.Video IN
IN
C.Video
0.1 ٜ
0.1u
IN 2
33 IN2
Open
55 Open
Logic
Logic
22
CTL
CTL
44
GND
GND
OUT
OUT
7
7
GND
GND
8
8
C.Video OUTOUT
C.Video
Fig.4
䋨When superimpossion is used䋩
Vcc
BA7654F
0.01uF
C.Video IN
1
IN1
3
IN2
Vcc
6
47u
0.1u
DC1.7V or more
Logic
5
Open
2
CTL
4
GND
OUT
7
C.Video OUT/DC OUT
GND 8
Fig.5
Cautions on use
1.
2.
3.
4.
5.
6.
7.
8.
Numbers and data in entries are representative design values and are not guaranteed values of the items.
Although ROHM is confident that the example application circuit reflects the best possible recommendations, be sure to
verify circuit characteristics for your particular application. Modification of constants for other externally connected circuits
may cause variations in both static and transient characteristics for external components as well as this Rohm IC. Allow
for sufficient margins when determining circuit constants.
Absolute maximum ratings
Use of the IC in excess of absolute maximum ratings, such as the applied voltage or operating temperature range
(Topr), may result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open
mode) when such damage is suffered. A physical safety measure, such as a fuse, should be implemented when using
the IC at times where the absolute maximum ratings may be exceeded.
GND potential
Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the
GND at any time, regardless of whether it is a transient signal or not.
Thermal design
Perform thermal design, in which there are adequate margins, by taking into account the permissible dissipation (Pd)
in actual states of use.
Short circuit between terminals and erroneous mounting
Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other
components on the circuits, can damage the IC.
Operation in strong electromagnetic field
Using the ICs in a strong electromagnetic field can cause operation malfunction.
For clamp operation stability
Set the output impedance of the stage before a BA7654AF input pin no more than 1 k.
6/8
9.
An input clamp capacitor will cause delay in operation at power on. Therefore, it is recommended to use a clamp
capacitor no larger than 0.1 F ( A 0.01F (FZ) ceramic capacitor is recommended).
10. CTL pin is in indeterminate status when left Open. Set it at “H” or “L” level.
11. For superimposed, a 1.7v DC voltage should be applied directly to an input pin.
Application circuit 2/2 㧔BA7653AF/53AFV/52AF㧕
BA7653AF/53AFV/52AF
Fig.6
䋨When superimpossion is used䋩
BA7653AF/53AFV/52AF
DC1.7V or more
DC1.7V
or
Fig.7
Cautions on use
1.
2.
3.
4.
5.
6.
7.
8.
9.
Numbers and data in entries are representative design values and are not guaranteed values of the items.
Although ROHM is confident that the example application circuit reflects the best possible recommendations, be sure to
verify circuit characteristics for your particular application. Modification of constants for other externally connected circuits
may cause variations in both static and transient characteristics for external components as well as this Rohm IC. Allow
for sufficient margins when determining circuit constants.
Absolute maximum ratings
Use of the IC in excess of absolute maximum ratings, such as the applied voltage or operating temperature range
(Topr), may result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open
mode) when such damage is suffered. A physical safety measure, such as a fuse, should be implemented when using
the IC at times where the absolute maximum ratings may be exceeded.
GND potential
Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the
GND at any time, regardless of whether it is a transient signal or not.
Thermal design
Perform thermal design, in which there are adequate margins, by taking into account the permissible dissipation (Pd)
in actual states of use.
Short circuit between terminals and erroneous mounting
Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other
components on the circuits, can damage the IC.
Operation in strong electromagnetic field
Using the ICs in a strong electromagnetic field can cause operation malfunction.
For clamp operation stability
Set the output impedance of the stage before a BA7653AF/53AFV/52AF input pin no more than 1 k.
An input clamp capacitor will cause delay in operation at power on. Therefore, it is recommended to use a clamp
capacitor no larger than 0.1 F ( A 0.01F (FZ) ceramic capacitor is recommended).
7/8
10. The BA7653AF/53AFV/52AF is a 3-input, 1-output switch. If it is used as a 2-input, 1-output switch, by leaving one input
Open and unused, the Open input pin will oscillate. However, this does not affect other pins and is not particularly a
problem for operation. If necessary, connect the input pin to GND via a capacitor or connect the input pin directly to VCC
to stop oscillation.
11. CTL pin is in indeterminate status when left Open. Set it at “H” or “L” level.
12. For superimposed, a 1.7v DC voltage should be applied directly to an input pin.
Ⴠ6HOHFWLRQRIRUGHUW\SH
%
$
7
5
6
4
(
)
Part No.
2
Tape and Reel information
BA7654F
BA7653AF/AFV
BA7652AF
SOP8
<Tape and Reel information>
<Dimension>
Tape
Embossed carrier tape
Quantity
2500pcs
Direction
of feed
E2
5.0±0.2
5
1
4
(The direction is the 1pin of product is at the upper left when you hold
reel on the left hand and you pull out the tape on the right hand)
0.15±0.1
1234
1234
1234
1234
1Pin
Reel
(Unit:mm)
1234
1234
0.1
1234
1.27
0.4±0.1
1234
1.5±0.1
0.11
6.2±0.3
4.4±0.2
0.3Min.
8
㶎When you order , please order in times the amount of package quantity.
SSOP-B8
<Tape and Reel information>
<Dimension>
Tape
Embossed carrier tape
Quantity
2500pcs
E2
3.0±0.2
5
6.4±0.3
4.4±0.2
0.3Min.
8
(The direction is the 1pin of product is at the upper left when you hold
reel on the left hand and you pull out the tape on the right hand)
0.15±0.1
0.1
1234
1234
1234
1234
1234
Reel
1234
0.22±0.1
0.65
1234
(0.52)
4
1234
1.15±0.1
0.1
1
Direction
of feed
1Pin
㶎When you order , please order in times the amount of package quantity.
8/8
Catalog No.08T298A '08.8 ROHM
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level
of reliability and the malfunction of which would directly endanger human life (such as medical
instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers
and other safety devices), please be sure to consult with our sales representative in advance.
It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance
of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow
for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in
order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM
cannot be held responsible for any damages arising from the use of the products under conditions out of the
range of the specifications or due to non-compliance with the NOTES specified in this catalog.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact your nearest sales office.
ROHM Customer Support System
www.rohm.com
Copyright © 2008 ROHM CO.,LTD.
THE AMERICAS / EUROPE / ASIA / JAPAN
Contact us : webmaster@ rohm.co. jp
21 Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan
TEL : +81-75-311-2121
FAX : +81-75-315-0172
Appendix1-Rev2.0
Similar pages