Document
Composite Video Amplifier
Output Capacitor-less Video Drivers
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
No.14064EBT02
●Description The BH768xxFVM 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 16.5 dB 2) Large-output video driver with maximum output voltage of 5.2 VP-P Supports wide and low-voltage operation range. 3) No output coupling capacitor is needed, which makes for a more compact design 4) Built-in standby function sets circuit current to 0 µA (typ.) during standby mode 5) Clear image reproduction by on-chip 8-order 4.5-MHz LPF (Low Pass Filter) 6) Bias input method is used to support chroma, video, and RGB signals. 7) 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.
BH76806FVM BH76809FVM BH76812FVM BH76816FVM
Video driver amp gain 6dB 9dB 12dB
16.5dB
Recommended input level 1 VP-P 0.7 VP-P 0.5 VP-P 0.3 VP-P
●Absolute maximum ratings (Ta=25℃)
Parameter
Symbol
Ratings
Unit
Supply voltage
VCC
3.55
V
Power dissipation
Pd 0.47
W
Operating temperature range
Topr
-40 to +85
℃
Storage temperature range
Tstg -55 to +125
℃
* Reduce by 4.7 mW/C over 25C, when mounted on a 70mm×70mm×1.6mm PCB board.
www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved.
1/16
2014.08 - Rev.B
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
●Operating range (Ta=25℃)
Parameter Supply voltage
Symbol VCC
Min. 2.5
TYP. 3.0
Max. 3.45
Unit V
Technical Note
●Electrical characteristics (Unless otherwise noted, Typ.: Ta=25℃, VCC=3V)
Parameter Circuit current 1
Typical value
Symbol BH76806 BH76809 BH76812 BH76816
FVM
FVM
FVM
FVM
Unit
Conditions
ICC1 16
15 mA No signal
Circuit current 2
ICC2
0.0
μA Standby mode
Standby SW input current High-Level
Standby switching voltage High-Level
Standby Switching voltage Low-Level
IthH VthH VthL
45 (min.) 1.2 (max.) 0.45
μA When 3.0 V is applied to 4pin V standby OFF V standby ON
Video driver amp gain
GV
6.0
9.0
12.0
16.5
dB Vo=100kHz, 1.0VP-P
Maximum output level
Vomv
5.2
VP-P f=1kHz,THD=1%
Frequency characteristic 1
Gf1
-0.45
dB f=4.5MHz/100kHz
Frequency characteristic 2
Gf2
-3.0 dB f=8.0MHz/100kHz
Frequency characteristic 3
Gf3
-32 dB f=18MHz/100kHz
Frequency characteristic 4 Differential Gain Differential Phase
Gf4 DG DP
Y signal output S/N
SNY +74
C signal output S/N (AM)
SNCA
+77
C signal output S/N (PM)
SNCP
Output pin source current
lextin
Output DC offset voltage
Voff
-51 0.5 1.0 +73 +70 +76 +75 +65 30 (max.) ±50
dB f=23.5MHz/100kHz
%
Vo =1.0VP-P Standard stair step signal
deg
Vo =1.0VP-P Standard stair step signal
Band = 100k to 6MHz +70 dB 75 Ω termination
100% chroma video signal
Band = 100 to 500kHz +75 dB 75Ωtermination
100%chroma video signal
Band = 100 to 500kHz dB 75Ωtermination
100%chroma video signal
mA
4.5 V applied via 150 Ω to output pin
mV 75 Ω termination
www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved.
2/16
2014.08 - Rev.B
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
●Measurement circuit
1µ
Technical Note
V2 (VCC)
OSC1
1
1 SW2
A 2 10µ
2
0.1µ
0.1µ 50
V4
3 4
8
IN CHARGE PUMP OUT
GND
NVCC
7
1µ V
LPF
150k
6dB/9dB/12dB/16.5dB +
-
6
4.7µ 75
5
V
75
※ Test circuit is intended for shipment inspections, and differs from application circuit. Fig. 1
●Control pin settings Parameter
Standby control
States STBY(4pin)=H STBY(4pin)=L STBY(4pin)=OPEN
Note STBY:OFF STBY:ON STBY:ON
●Block diagram
C1 1 VCC 2 VIN 3 STBY 4
IN CHARGE PUMP OUT
150k
LPF
GND
NVCC
6dB/9dB/12dB/16.5dB +
-
8 C2 7 NVCC 6 GND 5 VOUT
Fig. 2
www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved.
3/16
2014.08 - Rev.B
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
●Pin descriptions
Pin Pin No. name
equivalent circuit
DC voltage
Technical Note
Functions
1 C1
+VCC ↑↓
0V
Flying capacitor "+" pin
See function description for pins 7 and 8
2 VCC 3 VIN 4 STBY 5 VOUT
VCC
VCC Pin
Video signal input pin VIN
0V 1µF 150k
Adaptive input signal Composite video signal/ chroma signal/RGB signal, etc.
VCC to 0V
STANBY control Pin Terminal Voltage
MODE
1.2V to VCC (H)
STBY:OFF
0V to 0.45V (L)
STBY:ON
Video signal output pin
0V VOUT 75Ω
75Ω
6 GND
0V GND Pin
*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.,.