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PDF BH7649KS2 Data sheet ( Hoja de datos )

Número de pieza BH7649KS2
Descripción Video/Audio Signal Switchers
Fabricantes ROHM Semiconductor 
Logotipo ROHM Semiconductor Logotipo



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No Preview Available ! BH7649KS2 Hoja de datos, Descripción, Manual

High-performance Video Signal Switchers
VideoAudio Signal Switchers
for Car Navigation Car DVD Player
BH7649KS2
No.11066EAT05
Description
BH7649KS2 is built-in video switch, audio switch and isolation amplifier in a single chip.
Features
1) Video inputs selector: 7-inputs composite, Video outputs: 2-outputs 75video driver, 2-outputs AMP
2) Built in Video gain switch (-6dB / -3dB / 0dB / 3dB)
3) Built in Video LPF switch (6.75MHz / Through)
4) Built in sag compensation circuit
5) Enables two load drivers
6) Video driver: Able to be used without load
7) Video driver : Able to be used without output coupling capacitor(one load)
8) Audio inputs selector: 5-inputs(Lch, Rch), Audio outputs : 2-outputs(Lch, Rch)
9) Built in Audio gain switch (0dB / -6dB)
10) Built in Audio LPF switch (24kHz / Through)
11) Built in MUTE function
12) Audio/Video all inputs: Built in isolator function
13) Selectable isolator function for different Audio/Video input channels
14) Serial control with I2C-BUS (I2C-BUS is compatible with fast mode of Version2.0)
15) Optional Slave address modifications (90H / 92H)
Applications
Car navigation, Car DVD
Absolute maximum ratings (Ta=+25)
Parameter
Symbol
Ratings
Supply voltage VVcc
VVccmax
10
Supply voltage AVcc
AVccmax
10
Power dissipation
Pd
Input voltage range I2C-BUS input
(SCL, SDA)
Input voltage range Video selector, LOGIC
(VIN1, VRET1, VIN2, VRET2, VIN3, VRET3, VIN4, VRET4,
VIN5, VRET5, VIN6, VRET6, VIN7, VRET7, ADR)
Input voltage range Video driver
(VDIN1, VDIN2)
Input voltage range Audio seletor
(LIN1, ARET1, RIN1, LIN2, ARET2, RIN2, LIN3, ARET3, RIN3,
LIN4, ARET4, RIN4, LIN5, ARET5, RIN5)
Storage temperature range
VI2CIN
VIN1
VDIN1
VAIN1
Tstg
*1 When mounting on a 70mm×70mm×1.6mm 4-layer glass epoxy board
Reduced by 19mW/at Ta = +25or higher
1900 *1
-0.2 7.0
-0.2 5.1
-0.2 VVcc+0.2
-0.2 AVcc+0.2
-55+125
Unit
V
V
mW
V
V
V
V
Operating conditions
Parameter
Symbol
Ratings
Unit
Supply voltage VVcc
VVcc
+7.5 +9.5
Supply voltage AVcc
AVcc
+7.5 +9.5
Operating temperature range
Topr -40 +85
* This product is not designed for protection against radioactive rays.
V
V
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1/12
2011.04 - Rev.A

1 page




BH7649KS2 pdf
BH7649KS2
Package outlines
BH7649KS2
Technical Note
Lot No.
SQFP-T52(UNITmm )
Fig.3 Package outlines
Pin assignment table
No. I/O Pin Name
1-
2I
3I
4I
5-
6I
7I
8I
9-
10 I
11 I
12 I
13 -
VGND2
LIN1
ARET1
RIN1
ABIAS
LIN2
ARET2
RIN2
AGND
LIN3
ARET3
RIN3
AVcc
No. I/O
14 I
15 I
16 I
17 I
18 I
19 I
20 I
21 -
22 O
23 O
24 O
25 O
26 -
Pin Name
LIN4
ARET4
RIN4
ADR
LIN5
ARET5
RIN5
VBIAS
LOUT1
ROUT1
LOUT2
ROUT2
VVcc
No. I/O
27 O
28 O
29 O
30 O
31 -
32 I
33 O
34 I
35 O
36 I/O
37 I
38 O
39 I
Pin Name
VDOUT1
VDSAG1
VDOUT2
VDSAG2
VGND1
VDIN2
VOUT2
VDIN1
VOUT1
SDA
SCL
VREG
VIN1
No. I/O
40 I
41 I
42 I
43 I
44 I
45 I
46 I
47 I
48 I
49 I
50 I
51 I
52 I
Pin Name
VRET1
VIN2
VRET2
VIN3
VRET3
VIN4
VRET4
VIN5
VRET5
VIN6
VRET6
VIN7
VRET7
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
5/12
2011.04 - Rev.A

5 Page





BH7649KS2 arduino
BH7649KS2
Technical Note
Notes for use
(1) Absolute maximum ratings
If the absolute maximum ratings for applied voltage and/or operation temperature are exceeded, LSI damage may
result. Therefore, do not apply voltage or use in a temperature that exceeds these absolute maximum ratings. If it is
possible that absolute maximum ratings will be exceeded, use a physical safety device such as a fuse and make sure
that no conditions that might exceed the absolute maximum ratings will be applied to the LSI IC.
(2) GND potential
Regardless of the operation mode, the voltage of the GND pin should be at least the minimum voltage. Actually check
whether or not the voltage at each pin, including transient phenomena, is less than the
GND pin voltage.
(3) Thermal design
The thermal design should be done using an ample margin that takes into consideration the allowable dissipation
under actual use conditions. Perform thermal design in which there are adequate margins by taking into account the
allowable power dissipation in actual states of use.
(4) Shorts between pins and mounting errors
When mounting LSI ICs onto the circuit board, make sure each LSI’s orientation and position is correct. The ICs may
become damaged if they are not mounted correctly when the power is turned on. Similarly, damage may also result if a
short occurs, such as when a foreign object is positioned between pins in an IC, or between a pin and power supply or
GND connection.
(5) Operation in strong electromagnetic field
When used within a strong electromagnetic field, evaluate carefully to avoid the risk of operation faults.
(6) When not using a sag compensation circuit
Connect the sag compensation pin and output pin as closely as possible. There is a danger of high frequency
oscillation. Also make the distance from the output pin (OUT pin, SAG pin) to the 75Ω resistance as short as possible.
(7) When using a sag compensation circuit
Make the length of the output pin (OUT pin, SAG pin) and capacitor as short as possible. There is a danger of high
frequency oscillation. Also make the distance from the output pin (OUT pin, SAG pin) to the 75Ω resistance as short
as possible. If these cautions is not observed in board layout, connect a capacitor (0.01µF0.1µF) as short as
possible
(8) VGND1(31pin), VGND2(1pin) and AGND(9pin) connection
When to float any one of GND pins(VGND1, VGND2 and AGND) during operation, the internal ESD protection diode
Between VGND1, VGND2 and AGND may be damaged by large current surge. If the abnormal design like floating any
one of GND pins is required, it is advisable to connect external diodes between GND pins. The connection detail of
external diodes is illustrated in Fig.7.
AGND
9pin
BH7649KS2
VGND1
VGND2
31pin
1pin
:1SR154-400(ROHMetc.
Fig.7 External diodes
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
11/13
2011.04 - Rev.A

11 Page







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