ROHM BH76363FV Technical data
High-performance video signal Switcher Series
Video Drivers with Built-in
Low Voltage operation Single Video Switchers
High-performance System video Driver Series
Video Drivers with Built-in
Input Selection SW
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV
High-performance video signal Switcher Series
Wide Band
Low Voltage operation Single Video Switchers
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
INDEX
Video Drivers with Built-in
Low Voltage operation Single Video Switchers
BH76330FVM (3input 1output Video Switch)・・・・・・P2
BH76331FVM (3input 1output Video Switch)・・・・・・P2
No.09065EAT01
BH76360FV (6input 1output Video Switch)・・・・・・P17
BH76361FV (6input 1output Video Switch)・・・・・・P17
Wide Band
Low Voltage operation Single Video Switchers
BH76332FVM (3input 1output Video Switch)・・・・・・P2
BH76333FVM (3input 1output Video Switch)・・・・・・P2
BH76362FV (6input 1output Video Switch)・・・・・・P17
BH76363FV (6input 1output Video Switch)・・・・・・P17
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© 2009 ROHM Co., Ltd. All rights reserved.
1/32
2009.04 - Rev.A
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
Technical Note
Line-up of products with built-in video amplifier and video driver
3-input, 1-output video switch
BH76330FVM, BH76331FVM, BH76332FVM, BH76333FVM
● General
BH76330FVM, BH76331FVM, BH76332FVM, and BH76333FVM are video signal switching ICs, each with three inputs and
one circuit input, which feature wide dynamic range and frequency response. Since these ICs can be used with low voltage
starting at VCC = 2.8 V, they are applicable not only in stationary devices but also in mobile devices.
This product line-up supports a broad range of input signals, depending on whether or not a 6-dB video amplifier and video
driver are included and what combination of sync tip clamp type and bias (resistor termination) type inputs are used.
● Features
1) Able to use a wide range of power supply voltage, from 2.8 V to 5.5 V
2) Wide output dynamic range
3) Excellent frequency response
(BH76330FVM and BH76331FVM: 100 kHz/10 MHz 0 dB [Typ.], BH76332FVM and BH76333FVM: 100 kHz/30
MHz 0 dB [Typ.])
4) No crosstalk between channels (Typ. -65 dB, f = 4.43 MHz)
5) Built-in standby function, circuit current during standby is 0 µA (Typ.)
6) Sync tip clamp input (BH76330FVM, BH76332FVM)
7) Bias input (Zin = 150 k) (BH76331FVM, BH76333FVM)
8) 6-dB amp and 75 driver are built in (BH76330FVM, BH76331FVM)
9) Enables two load drivers [when using output coupling capacitor] (BH76330FVM, BH76331FVM)
10) Able to be used without output coupling capacitor (BH76330FVM)
11) MSOP8 compact package
● Applications
Input switching in car navigation systems, TVs, DVD systems, etc.
● Line-up
BH76330FVM BH76331FVM BH76332FVM BH76333FVM
Supply voltage 2.8 V to 5.5 V
Amp gain 6 dB -0.1 dB
Video driver Included －
Frequency response 100 kHz/10 MHz, 0 dB (Typ.) 100 kHz/30 MHz, 0 dB (Typ.)
Input type
● Absolute maximum ratings (Ta = 25℃)
Parameter Symbol Limits Unit
Supply voltage VCC 7.0 V
Power dissipation Pd 470 ＊1 mW
Input voltage range VIN 0 to VCC+0.2 V
Operating temperature
range
Storage temperature
range
● Operation range (Ta = 25℃)
Parameter Symbol Min. Typ. Max Unit
Supply voltage VCC 2.8 5.0 5.5 V
Sync tip
clamp
*1 When used while Ta = 25℃, 4.7 mW is dissipated per 1℃
Mounted on 70 mm x 70 mm x 1.6 mm glass epoxy board
Bias
(Zin = 150 k)
Topr
Ts tg
Sync tip
clamp
-40 to +85 ℃
-55 to +125 ℃
(Zin = 150 k)
Bias
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© 2009 ROHM Co., Ltd. All rights reserved.
2/32
2009.04 - Rev.A
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
● Electrical characteristics 1 (unless otherwise specified, Ta = 25℃, VCC = 5 V)
Parameter Symbol
76330 76331 76332 76333
Typ.
Unit Conditions
Circuit current 1 ICC1 10 9 mA When no signal
Circuit current 2 ICC2 0.0 µA During standby
Circuit current 3
ICC3-1 11 10
ICC3-2 17 －
During output of color bar signal
mA
During output of color bar signal
(no C in output)
Maximum output level VOM 4.6 3.8 3.4 Vpp f = 10 kHz, THD = 1%
Voltage gain GV 6.0 -0.1 dB Vin = 1.0 Vpp, f = 100 kHz
G
0 － dB Vin = 1.0 Vpp, f = 10 MHz/100 kHz
Frequency response
Crosstalk between
channels
F1
GF2 － 0 dB Vin = 1.0 Vpp, f = 30 MHz/100 kHz
CT -65 dB Vin = 1.0 Vpp, f = 4.43 MHz
Mute attenuation MT -65 dB Vin = 1.0 Vpp, f = 4.43 MHz
CTL pin switch level
CTL pin inflow current I
THH 1.2
V
VTHL 0.45
50
THH
V High level threshold voltage
Min
V Low level threshold voltage
Max
µA CTL pin = 2.0 V applied
Max
Input impedance Zin － 150 － 150 k
Differential gain DG 0.3 %
DP-1 0.7 0.3
Differential phase
DP-2 0.0 －
Y-related S/N SNY +75 +78 dB
C-related S/N [AM] SNCA +75
C-related S/N [PM] SNCP +65
Vin = 1.0 Vpp
Standard stair step signal
deg.
Same condition as above
(no C in output)
Vin = 1.0 Vpp, bandwidth: 100 k to 6 MHz
100% white video signal
Vin = 1.0 Vpp, bandwidth: 100 to 500 kHz
dB
100% chroma voltage signal
● Electrical characteristics 2 (unless otherwise specified, Ta = 25℃, VCC = 3 V)
Parameter Symbol
76330 76331 76332 76333
Typ.
Unit Conditions
Circuit current 1 ICC1 8.5 8.0 mA When no signal
Circuit current 2 ICC2 0.0 µA During standby
ICC3-1 9.5 9.0 mA During output of color bar signal
Circuit current 3
ICC3-2 15.5 －
During output of color bar signal
(no C in output)
Maximum output level VOM 2.7 2.8 1.8 1.9 Vpp f = 10 kHz, THD = 1%
Voltage gain GV 6.0 -0.1 dB Vin = 1.0 Vpp, f = 100 kHz
G
0 － dB Vin = 1.0 Vpp, f = 10 MHz/100 kHz
Frequency response
Crosstalk between
channels
F1
GF2 － 0 dB Vin = 1.0 Vpp, f = 30 MHz/100 kHz
-65 dB Vin = 1.0 Vpp, f = 4.43 MHz
C
T
Mute attenuation MT -65 dB Vin = 1.0 Vpp, f = 4.43 MHz
CTL pin switch level
CTL pin inflow current I
THH 1.2
V
VTHL 0.45
50
THH
V High level threshold voltage
Min
V Low level threshold voltage
Max
µA CTL pin = 2.0 V applied
Max
Input impedance Zin － 150 150 k
Differential gain DG 0.3 0.7 0.3 %
D
-1 1.0 0.3
P
Differential phase
DP-2 0.5 －
Y-related S/N SNY +75 +78 dB
C-related S/N [AM] SNCA +75 dB
C-related S/N [PM] SNCP +65 dB
(Note) Re: ICC3, VOM, GV, GF, CT, MT, DG, DP, SNY, SNCA, and SNCP parameters
BH76330FVM and BH76331FVM: RL = 150
BH76332FVM and BH76333FVM: RL = 10 k
Vin = 1.0 Vpp
Standard stair step signal
deg.
Same condition as above
(no C in output)
Vin = 1.0 Vpp, bandwidth: 100 k to 6 MHz
100% white video signal
Vin = 1.0 Vpp, bandwidth: 100 to 500 kHz
100% chroma video signal
Technical Note
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3/32
2009.04 - Rev.A
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
● Control pin settings
CTL
A B
STBY L(OPEN) L(OPEN)
IN1 L(OPEN) H
IN2 H L(OPEN)
IN3 H H
● Block diagram
CTLA
CTLB
CTLA
CTLB
Sync_Tip
IN1
Clamp
1
6dB
75Ω
IN2
2
Sync_Tip
Clamp
3 6
logic
Sync_Tip
Clamp
4 5
Fig.1 BH76330FV Fig.2 BH76331FV
Sync_Tip
IN1
Clamp
1
0dB
IN2
2
Sync_Tip
Clamp
3 6
logic
Sync_Tip
Clamp
4 5
Fig. 3 BH76332FV Fig. 4 BH76333FV
Technical Note
GND
8
OUT
7
VCC
IN3
GND
8
OUT
7
VCC
IN3
CTLA
CTLB
CTLA
CTLB
BIAS
IN1
IN2
1
2
BIAS
6dB
75Ω
GND
8
OUT
7
VCC
36
logic
BIAS
IN3
4 5
BIAS
IN1
IN2
1
2
BIAS
0dB
GND
8
OUT
7
VCC
36
logic
BIAS
IN3
4 5
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4/32
2009.04 - Rev.A
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
● I/O equivalent circuit diagrams
Input pins
Sync tip clamp input
BH76330FVM/BH76332FVM
Pin No. Name Equivalent circuit Pin No. Name Equivalent circuit
Bias input
BH76331FVM/BH76333FVM
Technical Note
1
3
5
IN1
IN2
IN3
IN
100Ω
Video signal input pin is used for sync tip clamp input.
・DC potential
BH76330FVM: 1.5 V BH76332FVM: 1.0 V
Control pins
Pin No. Name Equivalent circuit
200k
Ω
2
4
CTLA
CTLB
CTL
50kΩ
250kΩ
200kΩ
Switches operation mode [active or standby] and input
pin.
Threshold level is 0.45 V to 1.2 V.
Output pin
1
3
5
IN1
IN2
IN3
IN
100Ω
150kΩ
Video signal input pin is used for bias type input. Input
impedance is 150 k.
・DC potential
BH76331FVM: 3.1 V BH76333FVM: 2.5 V
With video driver
BH76330FVM/BH76331FVM
Without video driver
BH76332FVM/BH76333FVM
Pin No. Name Equivalent circuit Pin No. Name
OUT
7 OUT
14kΩ
Video signal output pin. Able to drive loads up to 75
(dual drive).
・DC potential
BH76330FVM: 0.16 V BH76331FVM: 2.5 V
7 OUT
Video signal output pin.
・DC potential
BH76332FVM: 0.3 V BH76333FVM: 1.8 V
OUT
3.0mA
Note 1) The above DC potential is only when VCC = 5 V. This value is a reference value and is not guaranteed.
Note 2) Numerical values shown in these figures are design values, and compliance to standards is not guaranteed.
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5/32
2009.04 - Rev.A
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
● Test Circuit Diagrams
VCC
Sync_Tip
IN1
0.01μF
50Ω
0.01μF
50Ω
Clamp
1
CTLA
A
2
Sync_Tip
Clamp
IN2
36
CTLB
A
4 5
logic
0.01μF
50Ω
0.01μF
50Ω
Sync_Tip
IN1
Clamp
1
CTLA
A
2
Sync_Tip
Clamp
IN2
3 6
CTLB
A
4 5
logic
6dB
Sync_Tip
Clamp
75Ω
GND
8
OUT
7
VCC
IN3
10μF
0.01μF
0.01μF
75Ω
75Ω
50Ω
10μF
V V
A
Fig. 5 BH76330FV/BH76331FV Test Circuit Diagram
Fig. 6 BH76332FV/BH76333FV Test Circuit Diagram
Test circuit diagrams are used for shipment inspections, and differ from application circuits.
● Application circuit examples
GND
8
OUT
7
VCC
IN3
470μF
0.1μF
When used without
output capacitor
7
75Ω
75Ω
47μF
VIDEO_IN
0.1μF
VIDEO_OUT
VIDEO_OUT
VCC
BIAS
VIDEO_IN
VIDEO_IN
IN1
1
4.7μF
CTLA
2
BIAS
IN2
36
4.7μF
CTLB
4 5
logic
VIDEO_IN
VIDEO_IN
Sync_Tip
IN1
Clamp
1
0.1μF
CTLA
2
Sync_Tip
Clamp
IN2
3 6
0.1μF
CTLB
4 5
logic
6dB
75Ω
Sync_Tip
Clamp
Fig. 7 BH76330FV
Fig. 8 BH76331FV
VIDEO_IN
VIDEO_IN
Sync_Tip
IN1
Clamp
1
0.1μF
CTLA
2
Sync_Tip
Clamp
IN2
3 6
0.1μF
CTLB
4 5
logic
0dB
Sync_Tip
Clamp
GND
8
OUT
7
VCC
IN3
0.1μF
0.1μF
47μF
VIDEO_OUT
VCC
VIDEO_IN
VIDEO_IN
VIDEO_IN
BIAS
IN1
1
4.7μF
CTLA
2
BIAS
IN2
36
4.7μF
CTLB
4 5
logic
Fig. 9 BH76332FV
Fig. 10 BH76333FV
See pages 6/16 to 10/16 for description of how to determine the capacity of I/O coupling capacitors.
6dB
Technical Note
GND
8
0dB
75Ω
OUT
7
VCC
IN3
OUT
OUT
GND
VCC
GND
VCC
8
7
IN3
8
7
IN3
0dB
Sync_Tip
Clamp
BIAS
BIAS
10μF
0.01μF
0.01μF
470μF
0.1μF
0.1μF
4.7μF
4.7μF
10kΩ
10μF
50Ω
75Ω
47μF
47μF
V V
A
VCC
VIDEO_OUT
VCC
VIDEO_IN
VIDEO_OUT
VCC
VIDEO_IN
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6/32
2009.04 - Rev.A
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
● Cautions for selection and use of application parts
When using this IC by itself ①
Input type
Sync_Tip_Clamp 10 M 0.1 µF
Bias 150 k 4.7 µF
Input impedance
Zin
Capacity of input coupling
capacitor (recommended
value)
Capacity of output coupling
capacitor (recommended
value)
470 µF to 1000 µF
Technical Note
Method for determining capacity of input coupling capacitor
The HPF is comprised of an input coupling capacitor and the internal input impedance Zin of the IC. Since the fc value of this HPF is
determined using the following equation (a), the above recommended capacity for the input capacitor is derived. Usually, the cutoff
frequency fc is several Hz.
fc = 1 / (2π × C × Zin)・・・・(a)
When evaluating the sag characteristics and determining the capacity of the capacitor during video signal input, a horizontal stripe signal
called "H bar" (shown in Fig. 10) is suitable, and this type of signal is used instead of a color bar signal to evaluate characteristics and
determine capacity.
Method for determining capacity of output coupling capacitor
The output pins of models with a 75 driver [BH76330FVM and BH76331FVM] have an HPF comprised of an output coupling capacitor and
load resistance R
approximately 470 µF to 1000 µF.
As for models without the 75 driver, an HPF is similarly comprised using the capacity of the output coupling capacitor and the input
impedance of the IC connected at the next stage, and the capacitance required for the output coupling capacitor should be estimated using
equation (a).
Fig.11 Example of Screen with Obvious Sag (H-bar Signal)
(= 150). When fc is set to approximately 1 Hz or 2 Hz, the capacity of the output coupling capacitor needs to be
L
When this IC is used as a standalone device ②
In models that include a 75 driver [BH76330FVM and BH76331FVM], up to two monitors (loads) can be connected (a connection example
is shown in Fig. 12). When there are multiple loads, the number of output coupling capacitors must be increased or a larger capacitance
must be used, based on the table shown below.
470μF
OUT
7
monitor
75Ω
75Ω
OUT
(470×2)μF
7
75Ω
monitor
75Ω
75Ω
monitor
75Ω
470μF
75Ω
monitor
75Ω
When this IC is used as a standalone device ③
The BH76330FVM is the only model that can be used without an output coupling capacitor.
This use method not only enables reductions in board space and part-related costs, but it is able to improve the sag characteristics by
improving low-range frequency response. However, when the output coupling capacitor is omitted, a direct current flows to the connected
set, so the specifications of the connected set should be noted carefully before starting use.
Note also that only one load can be connected when the output coupling capacitor is omitted.
Fig. 12 (a) Application Circuit Example 1 (Two Drives) Fig. 12 (b) Application Circuit Example 2 (Two Drives)
Application circuit example No. of output capacitors Capacitance per output capacitor (recommended values)
Fig. 12 (a) No. of drives required 470 µF to 1000 µF (same as with one drive)
Fig. 12 (b) 1 (No. of drive × 470 µF to 1000) uF
BH76330FV
OUT
monitor
7
75Ω
75Ω
Voltage at output ≒0.16V
When this voltage load resistance is applied,
a direct current is generated.
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© 2009 ROHM Co., Ltd. All rights reserved.
Fig.13 Application Example without Output Coupling Capacitor
7/32
2009.04 - Rev.A
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
yp
)
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
When using several of these ICs ①
When several of these ICs are used, it enables applications in which separate images are output to the car navigation system's front and
rear monitors.
Technical Note
VIDEO IN
VIDEO IN
VIDEO IN
IN1
1
IN2
3
IN3
5
Clamp
/Bias
Clamp
/Bias
Clamp
/Bias
7
OUT
470μF
75Ω
Front monitor
75Ω
IN1
IN2
IN3
1
3
5
Clamp
/Bias
Clamp
/Bias
Clamp
/Bias
7
OUT
470μF
75Ω
Rear monitor
75Ω
When several ICs are used at the same time, the number of parallel connections of input impedance equals the number of ICs being used,
which reduces the input impedance. This also raises the fc value of the HPF formed at the input pin block, so the capacitance of the input
coupling capacitor must be increased according to equation (a). The recommended values for calculation results are listed in the table
below.
When a clamp is used as the input type, the original input impedance becomes much greater, and if two or three are used at the same time
there is no need to change the capacitance of the input coupling capacitor.
Fig.14 Application Example when Using Several ICs
Capacitance of input
coupling capacitor
(recommended values)
Input type Input impedance per IC
Sync_Tip_Clamp Approx. 10 M
Bias 150 k
Number of ICs
used
Tota l
input impedance
2 Approx. 5 M 0.1 µF
3 Approx. 3 M 0.1 µF
2 75 k 6.8 µF~
3 50 k 10 µF~
When using several of these ICs ②
When three bias input type models (BH76331FVM or BH76333FVM) are used in parallel, they can be used for RGB signal switching
applications. Likewise, when one clamp input type model (BH76330FVM or BH76332FVM) is connected in parallel with two bias input type
models (a total of three ICs used in parallel), they can be used for component signal switching applications. The same method can be used
to determine the capacitance of I/O coupling capacitors of these applications.
VIDEO IN[R1]
4.7μF
VIDEO IN[R2]
4.7μF
VIDEO IN[R3]
4.7μF
VIDEO IN[G1]
4.7μF
VIDEO IN[G2]
4.7μF
VIDEO IN[G3]
4.7μF
Bias
IN1
1
Bias
IN2
3
Bias
IN3
5
Bias
IN1
1
Bias
IN2
3
Bias
IN3
5
BH76331FV
or BH76333FV
BH76331FV
or BH76333FV
VIDEO IN[B1]
4.7μF
VIDEO IN[B2]
4.7μF
VIDEO IN[B3]
4.7μF
Bias
IN1
1
Bias
IN2
3
Bias
IN3
5
BH76331FV
or BH76333FV
Fig. 15 (a). RGB Signal Switching Application Example
(using three bias input type models in parallel)
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© 2009 ROHM Co., Ltd. All rights reserved.
OUT
7
OUT
7
OUT
7
SW select
R_OUT
G_OUT
B_OUT
VIDEO IN[Py1]
VIDEO IN[Py2]
VIDEO IN[Py3]
VIDEO IN[Pb1]
VIDEO IN[Pb2]
VIDEO IN[Pb3]
VIDEO IN[Pr1]
VIDEO IN[Pr2]
VIDEO IN[Pr3]
Fig. 15 (b). Component Signal Switching Application Example
(using one clamp input type model and two bias input
e models in parallel
t
8/32
0.1uF
0.1uF
0.1uF
4.7uF
4.7uF
4.7uF
4.7uF
4.7uF
4.7uF
Clamp
IN1
1
Clamp
IN2
3
Clamp
IN3
5
Bias
IN1
1
Bias
IN2
3
Bias
IN3
5
Bias
IN1
1
Bias
IN2
3
Bias
IN3
5
BH76330FV
or BH76332FV
OUT
7
BH76331FV
or BH76333FV
OUT
7
BH76331FV
or BH76333FV
OUT
7
Py_OUT
Pb_OUT
Pr_OUT
SW select
2009.04 - Rev.A
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
k
(
)
y
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
Technical Note
● Cautions for use
1. The numerical values and data shown here are typical design values, not guaranteed values.
2. The application circuit examples show recommended circuits, but characteristics should be checked carefully before using
these circuits. If any external part constants are modified before use, factors such as variation in all external parts and
ROHM LSI ICs, including not only static characteristics but also transient characteristics, should be fully considered to set
an ample margin.
3. 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.
4. 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.
5. Thermal design
The thermal design should be done using an ample margin that takes into consideration the allowable dissipation under
actual use conditions.
6. 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 a power supply or
GND connection.
7. Operation in strong electromagnetic field
When used within a strong electromagnetic field, evaluate carefully to avoid the risk of operation faults.
8. Place the power supply's decoupling capacitor as close as possible to the VCC pin (PIN 6) and GND pin (PIN 8).
9. With a clamp input type model (BH76330FVM or BH76332FVM), if any unused input pins are left open they will oscillate, so
unused input pins should instead be connected to GND via a capacitor or else directly connected to VCC.
10. With models that do not include a 75
driver (BH76332FVM or BH76333FVM), in some cases the capacitance added to the
set board may cause the peak frequency response to occur at a high frequency. To lower the peak frequency, connect in
series resistors having resistance of several dozen
OUT
to several hundred as close as possible to the output pin.
Output pin
7
Fig.16 Positions where Resistors are Inserted to Lower Peak Frequency Response in BH76332FV or BH76333FV
Resistors (several dozen Ωto
several hundre dΩ) to lower pea
frequency
11. Frequency response in models that do not include a 75-
driver (BH76332FVM and BH76333FVM) was measured as 100
kH/30 MHz: 0 dB (Typ.) in the application circuit examples (shown in Fig. 9 and Fig. 10), and when resistance of about 1 or
2 k
is applied from the IC's output pin to GND, this frequency response can be improved (the lower limit of the applied
resistance should be 1 k
). In such cases, gain is reduced, since the output voltage is divided by the added resistance
and the output resistance of the IC.
1
OUT
7
3mA
Resistance to improve frequenc
response (R: 1-2 kΩ)
(a) Resistor insertion points
(b) Frequency response changes when resistance is inserted
Other constants are as in application examples (Figs. 9 & 10)
0
-1
-2
-3
-4
Voltage gain [dB]
-5
-6
-7
1M 10M 100M 1000M
Input amplitude: 1 Vpp, Output load resistance: 10 kΩ
R=1kΩ
R=2kΩ
No resistance
Frequency [Hz]
-0.10
-0.12
-0.14
-0.16
GAIN@f=100kHz[dB]
-0.18
-0.20
0.5 1 1.5 2 2.5
Resistance added to output pin [k]
出力端子付加抵抗値[kΩ]
(c) Voltage gain fluctuation when resistance is inserted
Voltage gain without inserted resistance: -0.11 dB
[f = 100 kHz]
Fig.17 Result of Resistance Inserted to Improve BH76332FVM/BH76333FVM Frequency Response
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2009.04 - Rev.A
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
Technical Note
12. With clamp input type models (BH76330FVM and BH76332FVM), if the termination impedance of the video input pin
becomes higher, sync contractions or oscillation-related problems may occur. Evaluate temperature and other
characteristics carefully and use at 1 k
Fig. 18. Relation between Input Pin Termination Impedance and Amount of Sync Contraction
or less.
6
5
4
3
2
at input pin [%]
1
Amount of sync contraction
入力端子でのsync縮み量[%]
0
01k2k3k
入力終端抵抗Rin[Ω]
Input termination resistance Rin [Ω]
● Evaluation board pattern diagram and circuit diagram
Fig. 19. Evaluation Board Circuit Diagram
Parts list
Symbol Function Recommended value
R1 R3 R5 Input terminating resistor 75
C1 C3 C5
R71 Output resistor 75
C7
C01
C02
Input coupling
capacitor
Output coupling
capacitor
Decoupling capacitor
Fig. 20. Evaluation Board Pattern Diagram
See pages 6/16 to 7/16 to determine
See pages 6/16 to 7/16 to determine
10 µF
0.1 µF
Comments
－
B characteristics recommended
－
B characteristics recommended
B characteristics recommended
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10/32
2009.04 - Rev.A
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