BH76361FV-E2 Rohm Semiconductor, BH76361FV-E2 Datasheet - Page 22

• Manufacturer Part Number: BH76361FV-E2
• Description: IC VIDEO DVR -0.1DB BIAS 16-SSOP
• Manufacturer: Rohm Semiconductor

Specifications of BH76361FV-E2

• Applications: 6:1 Multiplexer-Amplifier
• Number Of Circuits: 1
• Current - Supply: 10mA
• Voltage - Supply, Single/dual (±): 2.8 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: BH76361FV-E2TR

●
When using this IC by itself ①
When this IC is used as a standalone device ②
When this IC is used as a standalone device ③
© 2009 ROHM Co., Ltd. All rights reserved.
BH76330FVM, BH76331FVM, BH76360FV, BH76361FV,
BH76332FVM, BH76333FVM, BH76362FV, BH76363FV
www.rohm.com
Cautions for selection and use of application parts
Method for determining capacity of input coupling capacitor
Method for determining capacity of output 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.
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.
The output pins of models with a 75 driver [BH76360FV and BH76361FV] 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).
In models that include a 75 driver [BH76360FV and BH76361FV], 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.
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.
The BH76360FV is the only model that can be used without an output coupling capacitor.
Note also that only one load can be connected when the output coupling capacitor is omitted.
Application circuit example
Fig. 12 (a) Application Circuit Example 1 (Two Drives)
fc = 1 / (2π × C × Zin)・・・・(a)
Sync_Tip_Clamp
Input type
Fig12(a)
Fig12(b)
Bias
L
(= 150). When fc is set to approximately 1 Hz or 2 Hz, the capacity of the output coupling capacitor needs to be
OUT
Fig.11 Example of Screen with Obvious Sag (H-bar Signal)
16
470μF
470μF
75Ω
75Ω
Input impedance
monitor
monitor
Fig.13 Application Example without Output Coupling Capacitor
150kΩ
10MΩ
No. of output capacitors
75Ω
75Ω
No. of drives required
Zin
BH76360FV
1
OUT
16
capacitor (recommended value)
Capacity of input coupling
22/32
75Ω
monitor
Fig. 12 (b) Application Circuit Example 2 (Two Drives)
0.1uF
4.7uF
Capacitance per output capacitor (recommended values)
75Ω
470 µF to 1000 µF (same as with one drive)
OUT
(No. of drive × 470 µF to 1000) uF
16
(470×2)μF
Voltage at output ≒0.16V
When this voltage load resistance is applied,
a direct current is generated.
75Ω
75Ω
capacitor (recommended value)
Capacity of output coupling
monitor
monitor
75Ω
75Ω
470uF~1000uF
Technical Note
2009.04 - Rev.A