Technical Note
3/8
BH76106HFV, BH76109HFV, BH76112HFV, BH76206HFV
www.rohm.com
2009.03 - Rev.A
© 2009 ROHM Co., Ltd. All rights reserved.
Pin
No.
Pin
Name
IN OUT
Typical
voltage
Equivalent Circuit Function
1 GND - - 0V
GND pin
6 Stnby
○
- -
Standby pin
HIGH: Active
LOW: Standby
5 Vin ○ - 1.4V
Video signal input pin
This is a sync-tip clamp format
video signal input pin.
For the coupling capacitor,
0.1 μF is recommended.
2
3
Vsag
Vout
- ○ 0.2V
Video signal output pin
Video signal SAG correction pin
※The values show above (Voltage and resistance values) are reference values used for description, and are not guaranteed.
●Cautions on Use
(1) Numeric values and data that are cited are representative design values and their values are not guaranteed.
(2) Although we are confident recommending the application circuit example, carefully check the characteristics further in
conjunction with its use. If using it after modifying externally attached component constants, try to determine adequate
margins by including not just static characteristics but also transient characteristics to take into account variations in
externally attached components and the ROHM LSI.
(3) Absolute maximum ratings
If absolute maximum ratings such as applied voltage and operating temperature range are exceeded, the IC may be
damaged. Do not apply voltages or temperatures that exceed the absolute maximum ratings. If you are considering
circumstances in which an absolute maximum rating would be exceeded, implement physical safety measures such as
fuses and investigate ways of not applying conditions exceeding absolute maximum ratings to the LSI.
(4) GND potential
Even if the voltage of the GND pin is left in an operating state, make it the minimum voltage. Actually confirm that the
voltage of each pin does not become a lower voltage than the GND pin, including for transient phenomena.
(5) Thermal design
Perform thermal design in which there are adequate margins by taking into account the allowable dissipation under
conditions of actual use.
(6) Shorts between pins and mounting errors
When mounting the LSI on a board, be careful of the direction of the LSI and of misalignment. If mounted badly and
current is passed though it, the LSI may be damaged. The LSI also may be damaged if shorted by a foreign
substance getting in between LSI pins, between a pin and the power supply, or between a pin and GND.
(7) Operation in a strong electromagnetic field
Since the LSI could malfunction if used in a strong electromagnetic field, evaluate this carefully.
(8) Input termination resistor
Since there is a risk of oscillation at low temperatures (approximately -60 °C) if the termination resistor of the input pin
is made high impedance, set it to no more than 700 Ω.
If the termination resistor of the input pin is greater than 700 Ω, connect it as shown in the figure below.
※1 BH76106HFV
BH76109HFV
BH76112HFV
※2 BH76206HFV
DAC
0.1μ
Vin
DAC
0.1
1kΩ
Insert an emitter follower to
lower the output impedance.
1kΩ
0.1μ
Vin
Vin
DAC
470Ω
3Pin
2Pin
500
GND
(150k)
※
2
45k
※
1
225k
※
1
(35k)
※
2
100
Fig.3
Fig.2
