BH76806FVM-TR [ROHM]

Video Amplifier, 1 Channel(s), 1 Func, PDSO8, ROHS COMPLIANT, MSOP-8;
BH76806FVM-TR
型号: BH76806FVM-TR
厂家: ROHM    ROHM
描述:

Video Amplifier, 1 Channel(s), 1 Func, PDSO8, ROHS COMPLIANT, MSOP-8

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High-performance Video Driver Series  
Output Capacitor-less  
Video Drivers  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
No.09064EAT02  
Description  
The BH768xx series video drivers are the optimum solution for high density integration systems such as, digital still  
cameras, mobile phones, and portable video devices. A built-in charge pump circuit eliminates the need for a large output  
coupling capacitor. Features include: a built-in LPF, low-voltage (2.5 V) operation, and 0 µA current consumption during  
standby mode.  
Features  
1)  
Select from four video driver amp gain settings: 6 dB, 9 dB, 12 dB, and 16 dB  
Large-output video driver with maximum output voltage of 5.2 Vpp.  
Supports wide and low-voltage operation range.  
2)  
3)  
4)  
5)  
6)  
7)  
No output coupling capacitor is needed, which makes for a more compact design  
Built-in standby function sets circuit current to 0 µA (typ.) during standby mode  
Clear image reproduction by on-chip 8-order 4.5-MHz LPF (Low Pass Filter)  
Bias input method is used to support chroma, video, and RGB signals.  
MSOP8 compact package  
Applications  
Mobile telephones, DSCs (digital still cameras), DVCs (digital video cameras), portable game systems,  
portable media players, etc.  
Line up matrix  
Part No.  
Video driver amp gain  
Recommended input level  
BH76806FVM  
BH76809FVM  
BH76812FVM  
BH76816FVM  
6dB  
9dB  
1Vpp  
0.7Vpp  
0.5Vpp  
0.3Vpp  
12dB  
16.5dB  
Absolute maximum ratings Ta=25℃)  
Parameter Symbol  
Ratings  
3.55  
Unit  
V
Supply voltage  
Vcc  
Pd  
Power dissipation  
470  
mW  
Operating temperature range  
Storage temperature range  
Topr  
Tstg  
-40+85  
-55+125  
Reduce by 4.7 mW/C over 25C, when mounted on a 70mm×70mm×1.6mm PCB board.  
www.rohm.com  
2009.03 - Rev.A  
1/16  
© 2009 ROHM Co., Ltd. All rights reserved.  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Operating range (Ta=25)  
Parameter  
Symbol  
Vcc  
Min.  
2.5  
TYP.  
3.0  
Max.  
3.45  
Unit  
V
Supply voltage  
Electrical characteristics (Unless otherwise noted, Typ.: Ta=25, VCC=3V)  
Typical value  
BH76806 BH76809 BH76812 BH76816  
FVM FVM FVM FVM  
Parameter  
Symbol  
Unit  
Conditions  
Circuit current 1  
ICC1  
ICC2  
IthH  
16  
15  
mA No signal  
Circuit current 2  
0.0  
45  
μA Standby mode  
Standby SW input current  
High-Level  
μA When 3.0 V is applied to 4pin  
Standby switching voltage  
High-Level  
VthH  
VthL  
GV  
1.2V min  
V
V
standby OFF  
standby ON  
Standby Switching voltage  
Low-Level  
0.45Vmax  
Voltage gain  
6.0  
9.0  
12.0  
16.5  
dB Vo=100KHz, 1.0Vpp  
Vpp f=1KHz,THD=1%  
dB f=4.5MHz/100KHz  
dB f=8.0MHz/100KHz  
dB f=18MHz/100KHz  
dB f=23.5MHz/100KHz  
Maximum output level  
Frequency characteristic 1  
Frequency characteristic 2  
Frequency characteristic 3  
Frequency characteristic 4  
Differential Gain  
Vomv  
Gf1  
5.2  
-0.45  
-3.0  
-32  
Gf2  
Gf3  
Gf4  
-51  
Vo=1.0Vp-p  
DG  
0.5  
%
Standard stair step signal  
Vo=1.0Vp-p  
deg  
Differential Phase  
DP  
1.0  
Standard stair step signal  
Band = 100 kHz to 6 MHz  
dB 75 termination  
Y signal output S/N  
SNY  
+74  
+77  
+73  
+76  
+70  
+75  
+70  
+75  
100% chroma video signal  
Band = 100500KHz  
C signal output S/N (AM)  
SNCA  
dB 75Ωtermination  
100chroma video signal  
Band = 100500KHz  
dB 75Ωtermination  
100chroma video signal  
C signal output S/N (PM)  
SNCP  
+65  
30  
4.5 V applied via 150 to  
output pin  
Output pin source current  
Output DC offset voltage  
lextin  
Voff  
mA  
75 termination  
±50max  
mV  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
2009.03 - Rev.A  
2/16  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Measurement circuit  
1. 0u F  
1
8
7
I N  
OUT  
1
2
CHARGE PUMP  
GND  
S W2  
2
A
1. 0u F  
NVCC  
V
V2  
( V CC)  
10 u  
0. 1u  
6d B/9dB/  
S W3  
LPF  
12dB/16. 5dB  
3
4
6
5
0. 1 u  
OS C1  
50  
4. 7 u  
7 5  
V4  
75  
V
Test circuit is intended for shipment inspections, and differs from application circuit.  
Fig. 1  
Control pin settings  
Parameter  
States  
H
Note  
Active  
Standby4pin)  
L
Standby  
Standby  
OPEN  
Block diagram  
C1  
C2  
1
2
8
7
IN  
OUT  
CHARGE PUMP  
GND  
VCC  
NVCC  
NVCC  
6dB/9dB/  
LPF  
Vin  
GND  
12dB/16.5dB  
3
4
6
5
AMP  
STBY  
Vout  
Fig.2  
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2009.03 - Rev.A  
3/16  
© 2009 ROHM Co., Ltd. All rights reserved.  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Pin descriptions  
Pin  
No.  
Pin  
DC  
voltage  
equivalent circuit  
Functions  
name  
VCC  
VCC  
+VCC  
↑↓  
0V  
Flying capacitor "+" pin  
1
C1  
See function description for pins 7  
and 8  
C1  
GND  
GND  
NVCC  
2
VCC  
VCC  
VCC Pin  
VCC  
Video signal input pin  
VIN  
4 .1k  
4 .1k  
100  
150k  
3
VIN  
0V  
1μF  
Adaptive input signal  
VIN  
150K  
Composite video signal/  
NV  
chroma signal/RGB signal, etc.  
VCC  
VCC  
ACTIVE/STANBY Switching Pin  
Terminal  
MODE  
Votage  
1.2VVCC  
ACTIVE  
( H )  
50K  
STBY  
VCC  
to  
0V  
4
STBY  
250K  
200K  
0V0.45V  
STANBY  
( L )  
GND  
GND  
VCC  
VCC  
Video signal output pin  
VOUT  
VOUT  
5
0V  
VOUT  
75Ω  
75Ω  
NVCC  
NVCC  
1K  
VCC  
6
GND  
GND Pin  
0V  
GND  
NVCC  
1 The DC voltage in the figure is VCC = 3.0 V. These values are for reference only and are not guaranteed.  
2 These values are for reference only and are not guaranteed.  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
2009.03 - Rev.A  
4/16  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Pin descriptions  
Flying capacitor -pin  
(8pin)  
VCC  
VCC  
GND  
-VCC  
(-2.75V)  
C1  
7
NVCC  
VCC  
C2  
0V  
GND  
VCC  
VCC  
C2  
0V  
↑↓  
-VCC  
(-2.75V)  
8
C2  
NVC  
NVCC  
NVC  
Load voltage pins (7 pins)  
1 The DC voltage in the figure is VCC = 3.0 V. These values are for reference only and are not guaranteed.  
2 These values are for reference only and are not guaranteed.  
Description of operations  
1) Principles of video driver with no output coupling capacitor  
Amp (Single power supply)  
Amp (Dual power supply)  
VCC  
VCC  
Output capacitor is required due to DC  
Output capacitor is not required since  
DC voltage is not applied to output pin  
voltage at output pin  
75Ω  
75Ω  
75Ω  
1000μF  
75Ω  
-VCC  
Fig.4  
1/2VCC Bias  
Fig.3  
When the amplifier operates using single voltage power supply, the operating potential point is approximately 1/2 Vcc.  
Therefore, a coupling capacitor is required to prevent DC output. For the video driver, the load resistance is 150 (75 Ω  
+ 75 ). Therefore, the coupling capacitor should be about 1000 µF when a low bandwidth for transmission is considered.  
(See Figure 3.)  
When the amplifier operates using a dual (±) power supply, the operating point can be set at GND level, and therefore,  
there is no need for a coupling capacitor to prevent DC output.  
Since a coupling capacitor is not needed, there is no sagging of low-frequency characteristics in output stage. (See Figure  
4.)  
2) Generation of negative voltage by charge pump circuit  
As is shown in Figure 5, the charge pump consists of a pair of switches (SW1 and SW2) and a pair of capacitors (flying  
capacitor and load capacitor), generating a negative voltage. When +3 V is applied to this IC, approximately -2.83 V of  
negative voltage is obtained.  
www.rohm.com  
2009.03 - Rev.A  
5/16  
© 2009 ROHM Co., Ltd. All rights reserved.  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Vcc +3V  
Vcc +3V  
charge current  
charge current  
SW1 SW2  
+
+
-Vcc is generated  
Load capacitor  
SW1  
SW2  
charge current  
Flying capacitor  
Flying capacitor  
Load capacitor  
+
Vcc +3V  
charge current  
charge transfer mode  
+
+
+
-Vcc is generated  
Fig. 5 Principles of Charge Pump Circuit  
1) Configuration of BH768xxFVM Series  
As is shown in Figure 6, in the BH768xxFVM Series, a dual power supply amplifier is integrated with a charge pump circuit  
in the same IC. This enables operation using a + 3V single power supply while also using a dual power supply amplifier,  
which eliminates the need for an output coupling capacitor.  
VCC  
Dual power supply amp  
アンH768xxFVM  
1μF  
75Ω  
AMP  
75Ω  
Output capacitor not required  
for single power supply either.  
integration  
Single chip  
VCC  
-VCC  
Charge Pump  
Charge pump  
3.3μF  
768xxFVM  
1μF  
Fig. 6 BH768xxFVM Configuration Diagram  
2) Input terminal type and sag characteristics  
BH768xxFVM Series devices provide both a low-voltage video driver and a large dynamic range (approximately 5.2 Vpp).  
A resistance termination method (150 ktermination) is used instead of the clamp method, which only supports video  
signals, since it supports various signal types.  
The BH768xxFVM series supports a wide range of devices such as, video signals, chroma signals, and RGB signals that  
can operate normally even without a synchronization signal.  
In addition, input terminating resistance (150 k) can use a small input capacitor without reducing the sag low-band  
It is recommended to use a H-bar signal when evaluating sag characteristics, since it makes sag more noticeable. (See  
Figures 7 to 10.)  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
2009.03 - Rev.A  
6/16  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Sag is determined  
by input capacitor  
and input  
resistance only.  
Cut-off frequency for input capacitor and input impedance is  
the same as when the output capacitor is set at 1000 µF with  
an ordinary 75 driver.  
1μF  
150k  
75Ω+75Ω=150Ω  
1 μF X 150 K= 1000 μF X 150 ꢀ  
(Input terminal time constant) (Output terminal time constant)  
Sag  
Fig. 7  
a) Sag-free video signal (TG-7/1 output, H-bar)  
H-bar signal's TV screen  
output image  
Fig. 8  
b) BH768xxFVM output (input = 1.0 µF, TG-7/1 output, H-bar)  
75Ω  
Monitor  
1μF  
75Ω  
75Ω  
TG-7/1  
BH768xxFVM  
Fig. 9  
Nearly identical sag characteristics  
c) 1000 uF + 150 sag waveform (TG-7/1 output, H-bar)  
Monitor  
75Ω  
75Ω  
1000μF  
TG-7/1  
Fig. 10  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
2009.03 - Rev.A  
7/16  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Application circuit  
1.0μF(C18)  
1
8
7
OUT  
IN  
CHARGE PUNP  
GND  
10Ω(R2)  
1.0μF(C7)  
2
NVCC  
3.3μF  
6dB/9dB/  
12dB/16.5dB  
(C2)  
6
VIDEO IN  
LPF  
3
4
1.0μF(C3)  
75Ω(R5)  
L:Standby  
5
VIDEO OUT  
High  
Open  
Low  
Active  
Standby  
Standby  
Although ROHM is confident that the example application circuit reflects the best possible  
recommendations, be sure to verify circuit characteristics for your particular application.  
Fig. 11  
www.rohm.com  
2009.03 - Rev.A  
8/16  
© 2009 ROHM Co., Ltd. All rights reserved.  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
1.Effects of charge pump  
Vcc  
circuit’s current ripple  
Vcc pin  
2.Current ripple affects DAC, etc.  
3.3μF  
VOUT  
1μF  
1μF  
VIN  
75Ω  
VIDEO  
AMP  
DAC etc.  
75Ω  
-Vcc  
Charge Pump  
1μF  
Fig. 12 Effect of Charge Pump Circuit's Current Ripple on External Circuit  
1) Decoupling capacitor only  
Current waveform (A) between single  
power supply and capacitor  
10mA/div  
Vcc  
Current waveform (B)  
between capacitor and IC  
10mA/div  
A
A
B
A
Vcc  
Fig.13  
2) Decoupling capacitor + Resistance 10Ω  
Current waveform (A) between single  
power supply and capacitor  
10mA/div  
Current waveform (B)between single  
power supply and capacitor  
10mA/div  
Vcc  
Current waveform (C)between single  
power supply and capacitor  
10mA/div  
10  
Ω
A
A
B
A
A
C
Fig.14  
Vcc  
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© 2009 ROHM Co., Ltd. All rights reserved.  
2009.03 - Rev.A  
9/16  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Pattern diagram of evaluation board  
STBY  
ACT  
GND  
R2  
VIN  
GND  
R3  
VOUT  
R1  
C4  
C1  
C3  
C2  
VCC  
GND  
GND  
GND  
GND  
GND  
ROHM  
BH76806/09/12/16FVM  
Fig. 15  
List of external components  
Recommended  
value  
Symbol  
C1  
Function  
Flying capacitor  
Remark  
1μF  
1μF  
B characteristics are recommended  
B characteristics are recommended  
B characteristics are recommended  
B characteristics are recommended  
C2  
Tank capacitor  
1μF  
C3  
Input coupling capacitor  
Decoupling capacitor  
Output resistor  
C4  
3.3μF  
75Ω  
R1  
Not required when connecting to TV  
or video signal test equipment.  
Required when connecting to video  
signal test equipment.  
R2  
Output terminating resistance  
75Ω  
75Ω  
R3  
Input terminating resistance  
Input connector  
BNC  
RCA (pin jack)  
Output connector  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
2009.03 - Rev.A  
10/16  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Reference data  
BH76812FVM  
Ta=25℃  
BH76812FVM  
Ta=25℃  
30  
25  
20  
15  
10  
5
1
0.8  
0.6  
0.4  
0.2  
0
0
0
1
2
3
4
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
POWER SUPPLY VOLTAGE [V]  
POWER SUPPLY VOLTAGE [V]  
Fig. 17 Circuit Current (Standby) vs. Supply Voltage  
Fig. 16 Circuit current vs. Supply voltage  
VCC=3V  
BH76812FVM  
BH76812FVM  
VCC=3V  
1
20  
18  
16  
14  
12  
10  
0.8  
0.6  
0.4  
0.2  
0
-50  
0
50  
100  
-50  
0
50  
TEMPERATURE []  
100  
TEMPERATURE []  
Fig. 18 Circuit current vs. Temperature  
Fig. 19 Circuit Current (Standby) vs. Temperature  
Ta=25℃  
BH76812FVM  
BH76812FVM  
VCC=3V  
50  
25  
50  
25  
0
0
-25  
-50  
-25  
-50  
-50  
0
50  
100  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
TEMPERATURE []  
POWER SUPPLY VOLTAGE [V]  
Fig. 21 Vout DC offset voltage  
vs. Temperature  
Fig. 20 Vout DC offset voltage  
vs. Supply voltage  
BH76812FVM  
Ta=25℃  
BH76812FVM  
VCC=3V Ta=25℃  
12.5  
12.4  
12.3  
12.2  
12.1  
12  
5
-5  
-15  
-25  
-35  
-45  
-55  
11.9  
11.8  
11.7  
11.6  
11.5  
-65  
-75  
100  
10  
1
FREQUENCY [MHz]  
0.1  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
POWER SUPPLY VOLTAGE [V]  
Fig. 22 Frequency characteristic  
Fig. 23 Voltage gain vs. Supply voltage  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
2009.03 - Rev.A  
11/16  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
BH76812FVM  
VCC=3V  
BH76812FVM  
Ta=25℃  
12.5  
12.4  
12.3  
12.2  
12.1  
12  
1
0.8  
0.6  
0.4  
0.2  
0
f=4. 5MHz/100kHz  
11.9  
11.8  
11.7  
11.6  
11.5  
-0.2  
-0.4  
-0.6  
-0.8  
-1  
-50  
0
50  
100  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
TEMPERATURE []  
POWER SUPPLY VOLTAGE:Vcc[V]  
Fig. 25 Frequency response 1 vs. Supply voltage  
Fig. 24 Voltage gain vs. Temperature  
BH76812FVM  
VCC=3V  
BH76812FVM  
Ta=25℃  
1
0.8  
0.6  
0.4  
0.2  
0
0
-1  
-2  
-3  
-4  
-5  
-6  
f=4. 5MHz/100kHz  
f=8MHz/100kHz  
-0.2  
-0.4  
-0.6  
-0.8  
-1  
-50  
0
50  
100  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
TEMPERATURE[  
]
POWER SUPPLY VOLTAGE: Vcc [V]  
Fig. 27 Frequency response 2 vs. Supply voltage  
Fig. 26 Frequency response 1 vs. Temperature  
BH76812FVM  
Ta=25℃  
f=23.5MHz/100kHz  
BH76812FVM  
VCC=3V  
-40  
-45  
-50  
-55  
-60  
-65  
-70  
0
-1  
-2  
-3  
-4  
-5  
-6  
f=8MHz/100kHz  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
POWER SUPPLY VOLTAGE:Vcc[V]  
-50  
0
50  
100  
TEMPERATURE []  
Fig. 28 Frequency response 2 vs. Temperature  
Fig.29 Frequency response 4 vs. Supply voltage  
BH76812FVM  
VCC=3V  
BH76812FVM  
Ta=25℃  
7
6
5
4
3
2
1
0
-40  
-45  
-50  
-55  
-60  
-65  
-70  
f=23.5MHz/100kHz  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
-50  
0
50  
100  
POWER SUPPLY VOLTAGE [V]  
TEMPERATURE []  
Fig. 31 Maximum output voltage level vs. Supply voltage  
Fig. 30 Frequency response 4 vs. Temperature  
www.rohm.com  
2009.03 - Rev.A  
12/16  
© 2009 ROHM Co., Ltd. All rights reserved.  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
BH76812FVM  
VCC=3V  
Ta=25℃  
BH76812FVM  
VCC=3V  
3
2
6
5.8  
5.6  
5.4  
5.2  
5
1
6dB  
9dB  
0
12dB  
16.5dB  
4.8  
4.6  
4.4  
4.2  
4
-1  
-2  
-3  
-1.5  
-1.0 -0.5  
0.0  
0.5  
1.0  
1.5  
-50  
0
50  
100  
INPUT DC VOLTAGE [V]  
TEMPERATURE[V]  
Fig. 32 Maximum output level vs. Temperature  
Fig. 33 Output DC voltage – Input DC voltage  
BH76812FVM  
VCC=3V  
BH76812FVM  
Ta=25℃  
300  
260  
220  
180  
140  
100  
300  
260  
220  
180  
140  
100  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
-50  
0
50  
100  
POWER SUPPLY VOLTAGE [V]  
TEMPERATURE []  
Fig. 35 Charge pump oscillation frequency  
vs. Temperature  
Fig. 34 Charge pump oscillation frequency  
vs. Supply voltage  
BH76812FVM  
BH76812FVM  
Ta=25℃  
VCC=3V Ta=25℃  
1.0  
0.5  
0
-0.5  
-1  
0.0  
-0.5  
-1.0  
-1.5  
-2.0  
-2.5  
-3.0  
-3.5  
-4.0  
-1.5  
-2  
-2.5  
-3  
0.0  
1.0  
2.0  
3.0  
4.0  
0
10  
20  
30  
40  
POWER SUPPLY VOLTAGE [V]  
LOAD CURRENT [mA]  
Fig. 36 Charge pump output voltage  
vs. Supply voltage  
Fig. 37 Charge pump load regulation  
BH76812FVM  
BH76812FVM  
VCC=3V  
Ta=25℃  
3
2.5  
2
3
2.5  
2
1.5  
1
1.5  
1
0.5  
0.5  
0
0
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
-50  
0
50  
100  
TEMPERATURE []  
POWER SUPPLY VOLTAGE [V]  
Fig. 39 Differential phase vs. Temperature  
Fig. 38 Differential phase vs. Supply voltage  
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2009.03 - Rev.A  
13/16  
© 2009 ROHM Co., Ltd. All rights reserved.  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
BH76812FVM  
BH76812FVM  
VCC=3V  
Ta=25℃  
3
2.5  
2
3
2.5  
2
1.5  
1
1.5  
1
0.5  
0
0.5  
0
-50  
0
50  
100  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
POWER SUPPLY VOLTAGE [V]  
TEMPERATURE []  
Fig. 40 Differential gain vs. Supply voltage  
Fig. 41 Differential gain vs. Temperature  
BH76812FVM  
VCC=3V  
Ta=25℃  
BH76812FVM  
80  
75  
70  
65  
60  
80  
75  
70  
65  
60  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
-50  
0
50  
100  
POWER SUPPLY VOLTAGE [V]  
TEMPERATURE []  
Fig.43 S/N(Y) vs. Temperature  
Fig. 42 S/N(Y) vs. Supply Voltage  
BH76812FVM  
Ta=25℃  
VCC=3V  
BH76812FVM  
80  
75  
70  
65  
60  
80  
75  
70  
65  
60  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
-50  
0
50  
100  
POWER SUPPLY VOLTAGE [V]  
TEMPERATURE []  
Fig. 44 S/N(C-AM) vs. Supply Voltage  
Fig. 45 S/N(C-AM) vs. Temperature  
BH76812FVM  
Ta=25℃  
BH76812FVM  
VCC=3V  
70  
68  
66  
64  
62  
60  
58  
56  
54  
52  
50  
70  
65  
60  
55  
50  
2.5  
2.7  
2.9  
3.1  
3.3  
3.5  
-50  
0
50  
100  
POWER SUPPLY VOLTAGE: Vcc[V]  
TEMPERATURE []  
Fig. 46 S/N(C-PM) vs. Supply Voltage  
Fig. 47 S/N(C-PM) vs. Temperature  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
2009.03 - Rev.A  
14/16  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
BH76812FVM  
VCC=3V Ta=25℃  
20  
15  
10  
5
0
0.0  
0.5  
1.0  
1.5  
2.0  
CTL TERMINAL VOLTAGE [V]  
Fig. 48 Circuit current vs. CTL terminal voltage  
Cautions on use  
1.  
2.  
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.  
3.  
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.  
Thermal design  
4.  
5.  
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.  
6.  
7.  
Operation in strong electromagnetic field  
Using the ICs in a strong electromagnetic field can cause operation malfunction.  
Wiring from the decoupling capacitor C2 to the IC should be kept as short as possible.  
This capacitance value may have ripple effects on the IC, and may affect the S-N ratio. It is recommended to use  
as large a decoupling capacitor as possible. (Recommendations: 3.3 µF, B characteristics, 6.3 V or higher)  
Target capacitor  
8.  
It is recommended to use a ceramic capacitor with good temperature characteristics (B).  
The NVCC (7 pin) terminal generates a voltage that is used within the IC, so it should not be connected to a load  
unless necessary. This capacitor (C7) has a large capacitance value with low negative voltage ripple.  
Capacitors C18 and C2 should be placed as close as possible to the IC. If the wire length to the capacitor is too  
long, it can lead to switching noise. (Recommended C18: 1.0 µF; C2: 3.3 µF, B characteristics, 6.3 V or higher  
maximum voltage)  
9.  
10.  
11.  
The HPF consists of input coupling capacitor C3 and 150 kof the internal input.  
Be sure to check for video signal sag before determining the C3 value.  
The cut-off frequency fc can be calculated using the following formula.  
fc = 1/(2π× C3 × 150 k) (Recommendations: 1.0 µF, B characteristics, 6.3 V or higher maximum voltage)  
The output resistor R5 should be placed close to the IC.  
12.  
13.  
14.  
Improper mounting may damage the IC.  
A large current transition occurs in the power supply pin when the charge pump circuit is switched. If this affects  
other ICs (via the power supply line), insert a resistor (approximately 10 ) in the VCC line to improve the power  
supply's ripple effects. Although inserting a 10 resistor lowers the voltage by about 0.2 V, this IC has a wide margin  
for low-voltage operation, so dynamic range problems or other problems should not occur. (See Figures 12 to 14.)  
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2009.03 - Rev.A  
15/16  
© 2009 ROHM Co., Ltd. All rights reserved.  
Technical Note  
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM  
Selection of order type  
8 0 6  
H 7 6  
T R  
B
F
M
V
Tape and Reel  
information  
Part. No.  
BH76806FVM  
BH76809FVM  
BH76812FVM  
BH76816FVM  
MSOP8  
<Dimension>  
<Tape and Reel information>  
Tape  
Embossed carrier tape  
Quantity  
3000pcs  
2.9 0.1  
Direction  
of feed  
TR  
8
5
(Correct direction: 1pin of product should be at the upper left when you  
hold reel on the left hand, and you pull out the tape on the right hand)  
1
4
+0.05  
0.03  
0.145  
0.475  
+0.05  
0.22 0.04  
M
0.08  
X X  
X
X X  
X
X X  
X
X X  
X
X X  
X
0.65  
0.08 S  
X
X
X
X
X
X X  
X
X X  
X
X X  
X
X X  
X
X X  
X
Direction of feed  
1Pin  
Reel  
(Unit:mm)  
Orders are available in complete units only.  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
2009.03 - Rev.A  
16/16  
Notice  
N o t e s  
No copying or reproduction of this document, in part or in whole, is permitted without the  
consent of ROHM Co.,Ltd.  
The content specified herein is subject to change for improvement without notice.  
The content specified herein is for the purpose of introducing ROHM's products (hereinafter  
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,  
which can be obtained from ROHM upon request.  
Examples of application circuits, circuit constants and any other information contained herein  
illustrate the standard usage and operations of the Products. The peripheral conditions must  
be taken into account when designing circuits for mass production.  
Great care was taken in ensuring the accuracy of the information specified in this document.  
However, should you incur any damage arising from any inaccuracy or misprint of such  
information, ROHM shall bear no responsibility for such damage.  
The technical information specified herein is intended only to show the typical functions of and  
examples of application circuits for the Products. ROHM does not grant you, explicitly or  
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and  
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the  
use of such technical information.  
The Products specified in this document are intended to be used with general-use electronic  
equipment or devices (such as audio visual equipment, office-automation equipment, commu-  
nication devices, electronic appliances and amusement devices).  
The Products specified in this document are not designed to be radiation tolerant.  
While ROHM always makes efforts to enhance the quality and reliability of its Products, a  
Product may fail or malfunction for a variety of reasons.  
Please be sure to implement in your equipment using the Products safety measures to guard  
against the possibility of physical injury, fire or any other damage caused in the event of the  
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM  
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed  
scope or not in accordance with the instruction manual.  
The Products are not designed or manufactured to be used with any equipment, device or  
system which requires an extremely high level of reliability the failure or malfunction of which  
may result in a direct threat to human life or create a risk of human injury (such as a medical  
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller,  
fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of  
any of the Products for the above special purposes. If a Product is intended to be used for any  
such special purpose, please contact a ROHM sales representative before purchasing.  
If you intend to export or ship overseas any Product or technology specified herein that may  
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to  
obtain a license or permit under the Law.  
Thank you for your accessing to ROHM product informations.  
More detail product informations and catalogs are available, please contact us.  
ROHM Customer Support System  
http://www.rohm.com/contact/  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
R0039  
A

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