BH768xxFVM Datasheet by Rohm Semiconductor

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Composite Video Amplifier
Output Capacitor-less
Video Drivers
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
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. Video driver amp gain Recommended input level
BH76806FVM 6dB 1 VP-P
BH76809FVM 9dB 0.7 VP-P
BH76812FVM 12dB 0.5 VP-P
BH76816FVM 16.5dB 0.3 VP-P
Absolute maximum ratingsTa=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.
No.14064EBT02
Technical Note
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Operating range (Ta=25)
Parameter Symbol Min. TYP. Max. Unit
Supply voltage VCC 2.5 3.0 3.45 V
Electrical characteristics (Unless otherwise noted, Typ.: Ta=25, VCC=3V)
Parameter Symbol Typical value Unit Conditions
BH76806
FVM BH76809
FVM BH76812
FVM BH76816
FVM
Circuit current 1 ICC1 16 15 mA No signal
Circuit current 2 ICC2 0.0 A Standby mode
Standby SW input current
High-Level IthH 45 A When 3.0 V is applied to 4pin
Standby switching voltage
High-Level VthH (min.) 1.2 V standby OFF
Standby Switching voltage
Low-Level VthL (max.) 0.45 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 Gf4 -51 dB f=23.5MHz/100kHz
Differential Gain DG 0.5 %
Vo =1.0VP-P
Standard stair step signal
Differential Phase DP 1.0 deg
Vo =1.0VP-P
Standard stair step signal
Y signal output S/N SNY +74 +73 +70 +70 dB
Band = 100k to 6MHz
75 termination
100% chroma video signal
C signal output S/N (AM) SNCA +77 +76 +75 +75 dB
Band = 100 to 500kHz
75termination
100%chroma video signal
C signal output S/N (PM) SNCP +65 dB
Band = 100 to 500kHz
75termination
100%chroma video signal
Output pin source current lextin 30 mA 4.5 V applied via 150 to
output pin
Output DC offset voltage Voff (max.) ±50 mV 75 termination
Technical Note
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BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
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Measurement circuit
1
2
3
4
8
7
6
5
CHARGE PUMP
LPF
A
V
V
0.1µ
10µ
0.1µ
50
V4
OSC1
V2
(VCC)
1
2
SW2
4.7µ 75
75
6dB/9dB/12dB/16.5dB
NVCC
OUT
GND
150k
IN
+
-
Control pin settings
Parameter States Note
Standby control
STBY(4pin)=H STBY:OFF
STBY(4pin)=L STBY:ON
STBY(4pin)=OPEN STBY:ON
Block diagram
Test circuit is intended for shipment inspections, and differs from application circuit.
Fig. 1
Fig. 2
1
2
3
4
8
7
6
5
CHARGE PUMP
LPF 6dB/9dB/12dB/16.5dB
NVCC
OUT
GND
150k
IN
C1
VCC
VIN
STBY
C2
NVCC
GND
VOUT
+
-
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM oPin descriplions Pll’l Pll’l DC equivalenl Circuil Funclions No. name voltage vcc iii—j , Flying capacitor "+" pin ,7 +VCC 1 01 i ll See lunclion descriplion 7, J» 0V and 8 —L uvcc 2 VCC VCC VCC Pm Video signal input pin ©—l 3 VlN 0V 1W: Adaptive input signal Composite video signal/ chroma signal/RG3 sign chc STANBY control Pin Terminal VCC Voltage lo 1.2V to VCC 0v ( H ) 0V to 0.45V (L) we Video signal output pin ‘ vour 5 VOL” j %i av VOUT / chc 75“ 750 wfi 1k MODE srev 4 STBV STBYOFF STBYDN vcc 5 GND 6"” 0v GND Pin uvcc *1 The DC voltage in lhe ligure l5 VCC : 3.0 V. These values are lor relerence only and are nol guaranleed. * 2 These values are for reference only and are not guaranteed wwwmm'm 4/16 2014.08 - Rev.B © 2009 RQHM C0,. Ltd. All rights reserved.
Technical Note
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BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
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Pin descriptions
Pin
No.
Pin
name equivalent circuit DC
voltage Functions
1 C1 +VCC

0V
Flying capacitor "+" pin
See function description for pins 7
and 8
2 VCC
VCC VCC Pin
3 VIN 0V
Video signal input pin
4 STBY
VCC
to
0V
STANBY control Pin
Terminal
Voltage MODE
1.2V to VCC
( H ) STBY:OFF
0V to 0.45V
( L ) STBY:ON
5 VOUT 0V
Video signal output pin
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.
VIN
1µF 150k
Adaptive input signal
Composite video signal/
chroma signal/RGB signal, etc.
VOUT
75 75
, 7 X 71.,4l 7 7 7— W" *7 Hip fl 7 7 fi\/\/\ 97% / When the amplilier operates usirig single voltage power supply, th Therelore, a couplirig capacitor is required to prevent DC output. + 75 0). Therefore, the couplirig capacitor should be about 1000 u (See Figure 3.) When the amplilier operates usirig a dual (t) power supply, the op there is no need lor a coupling capacitor to prevent DC output. Since a coupling capacitor is not needed, there is no sagging of lo 4.) 2) Generation ol negative voltage by charge pump circuit As is shown in Figure 5, the charge pump consists of a pair of sw capacitor and load capacitor), generating a negative voltage. Whe negative voltage is obtained. www.rohm.com 5/16 42 2009 RDHM 00.. Ltd. All rights reserved.
Technical Note
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BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
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Pin descriptions
7 NVCC
-VCC
(-2.75V)
Flying capacitor “-”pin
(8pin)
8 C2
0V

-VCC
(-2.75V)
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
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
+ 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.
0V
VCC
NVCC
C1
C2
NVCC
Load voltage pins (7 pins)
Amp (Dual power supply)
VCC
-VCC
75
75
Amp (Single power supply)
VCC
75
75
1/2VCC Bias
1000µF
Fig.3 Fig.4
Output capacitor is required due to DC
voltage at output pin
Output capacitor is not required since
DC voltage is not applied to output pin
|_I eeeee
Technical Note
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BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
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SW1 SW2
charge current
charge current
Flying capacitor
Load capacitor
Vcc +3V
SW1 SW2
charge current
Flying capacitor Load capacitor
Vcc +3V
Vcc +3V charge current
-Vcc is generated
-Vcc is generated
charge transfer mode
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.
3.3uF
75Ω
75Ω
1µF
Vcc
1µF
1µF
CHARGE
PUMP
LPF VIDEO
AMP
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 VP-P).
A resistance termination method (150 k termination) 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.)
Fig. 5 Principles of Charge Pump Circuit
Fig. 6 BH768xxFVM Configuration Diagram
Fig. 7 a) Sag-tree TV Test Signal Generator Output(Sibasoku TG-7/1 , H-bar) W b) BH768xxFVM output (input : 1.0 0F, output, H-bar) (TV Test Signal Generator Sibasoku TG-7/1 output, H-bar) c) 1000 pF + 150 U sag wavelorm / Fig. 10 www.mhm.cem © 2009 ROHM Co” Ltd. A” nghts reserved. 7/16
Technical Note
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BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
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a) Sag-free TV Test Signal Generator Output(Sibasoku TG-7/1 , H-bar)
b) BH768xxFVM output (input = 1.0 µF, output, H-bar)
c) 1000 µF + 150 sag waveform
(TV Test Signal Generator Sibasoku TG-7/1 output, H-bar)
Fig. 7
1µF
150k
Sag
Sag is determined
by input capacitor
and input
resistance onl
y
.
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.
1 F X 150 K = 1000 F X 150
(Input terminal time constant) (Output terminal time constant)
H-bar signal's TV screen
output image
75
75
Monitor
1F
TG-7/1
BH768xxFVM
Nearly identical sag characteristics
Fig. 8
Fig. 9
Fig. 10
150k
TG-7/1
75
75
Monitor
1000F
VCC
-VCC
L LJ é g 7 fl i L 4_|_ I I H E ‘ 3—,1. —’E W
Technical Note
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Application circuit
1
2
3
4
8
7
6
5
CHARGE PUMP
LPF
1.0µF
(C18)
1.0µF(C7)
75Ω(R5)
6dB/9dB/12dB/16.5dB
NVCC
OUT
GND
150k
IN
3.3µF
(C2)
10Ω(R2)
1.0µF(C3)
VIDEO IN
+
-
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.
The effect of the resister inserted in the VCC line
1.Effects of charge pump
circuit’s current ripple
2.Current ripple affects DAC, etc.
DAC etc
3.3µF
Vcc端子
Vcc
1µF 75Ω
75Ω
CHARGE
PUMP
1µF
1µF
1µF
LPF VIDEO
AMP
A
lthough ROHM is confident that the example application circuit reflects the best possible
recommendations, be sure to verify circuit characteristics for your particular application.
Fig. 12 Effect of Charge Pump Circuit's Current Ripple on External Circuit
Fig. 11
cmnmnv Eula 2) Decoupling capacitor + Resistance 10707 «415mm no u mum ' ‘ mm.) mm”
Technical Note
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1) Decoupling capacitor only
2) Decoupling capacitor + Resistance 10
Current waveform (A)
between single power supply and C2
10mA/div
Current waveform (B)
between C2 and IC
10mA/div
Current waveform (A)
between single power supply and R2
10mA/div
Current waveform (B)
between R2 and C2
10mA/div
Current waveform (C)
between single power supply and C2
10mA/div
Fig.13
Fig.14
A(B)
Vcc
(A)
A
VCC
C2
A
A
Vcc
10Ω
A
VCC
C2
R2
(C)
(A)
(B)
n. o oi
Technical Note
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Pattern diagram of evaluation board
List of external components
Symbol Function
Recommended
value Remark
C1 Flying capacitor 1F B characteristics are recommended
C2 Tank capacitor 1F B characteristics are recommended
C3 Input coupling capacitor 1F B characteristics are recommended
C4 Decoupling capacitor 3.3F B characteristics are recommended
R1 Output resistor 75
R2 Output terminating resistance 75 Not required when connecting to TV
or video signal test equipment.
R3 Input terminating resistance 75 Required when connecting to video
signal test equipment.
CN1 Input connector BNC
CN2 Output connector RCA (pin jack)
SW STBY control SW
GND
GND GND
GND
GND
GND
GND
VCC C1
C2
C3
C4
STBY
ROHM BH76806/09/12/16FVM
R3
R1
R2
ACT
VIN VOUT
Fig. 15
CN1 CN2
SW
Technical Note
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BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
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Reference data
Fig. 16 Circuit current vs. Supply voltage
Fig. 18 Circuit current vs. Temperature Fig. 19 Circuit Current (Standby) vs. Temperature
Fig. 20 VOUT DC offset voltage
vs. Supply voltage
Fig. 21 VOUT DC offset voltage
vs. Temperature
Fig. 22 Frequency characteristic Fig. 23 Voltage gain vs. Supply voltage
POWER SUPPLY VOLTAGE [V]
CIRCUIT CURRENT [mA]
Ta=25
10
12
14
16
18
20
-50 0 50 100
CIRCUIT CURRENT [mA]
TEMPERATURE []
VCC=3V
-50
-25
0
25
50
-50 0 50 100
TEMPERATURE []
VOUT DC OFFSET [mV]
VCC=3V
0
0.2
0.4
0.6
0.8
1
2.5 2.7 2.9 3.1 3.3 3.5
STANDBY CURRENT [A]
POWER SUPPLY VOLTAGE [V]
Ta=25
11.5
11.6
11.7
11.8
11.9
12
12.1
12.2
12.3
12.4
12.5
2.5 2.7 2.9 3.1 3.3 3.5
VOLTAGE GAIN [dB]
POWER SUPPLY VOLTAGE [V]
Ta=25
0
0.2
0.4
0.6
0.8
1
-50 0 50 100
VCC=3V
TEMPERATURE []
STANDBY CURRENT [A]
-50
-25
0
25
50
2.5 2.7 2.9 3.1 3.3 3.5
VOUT DC OFFSET [mV]
Ta=25
POWER SUPPLY VOLTAGE [V]
-75
-65
-55
-45
-35
-25
-15
-5
5
0.1 1 10 100
VOLTAGE GAIN [dB]
FREQUENCY [MHz]
VCC=3V Ta=25
BH76812FVM BH76812FVM
BH76812FVM BH76812FVM
BH76812FVM BH76812FVM
BH76812FVM BH76812FVM
Fig. 17 Circuit Current (Standby) vs. Supply Voltage
0
5
10
15
20
25
30
01234
requency response 4 vs
Technical Note
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BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
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-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
2.5 2.7 2.9 3.1 3.3 3.5
POWER SUPPLY VOLTAGE:Vcc[V]
FREQENCY RESPONSE1:Gf1[dB]
Fig. 24 Voltage gain vs. Temperature Fig. 25 Frequency response 1 vs. Supply voltage
Fig. 26 Frequency response 1 vs. Temperature Fig. 27 Frequency response 2 vs. Supply voltage
Fig. 28 Frequency response 2 vs. Temperature Fig.29 Frequency response 4 vs. Supply voltage
Fig. 30 Frequency response 4 vs. Temperature Fig. 31 Maximum output voltage level vs. Supply voltage
11.5
11.6
11.7
11.8
11.9
12
12.1
12.2
12.3
12.4
12.5
-50 0 50 100
TEMPERATURE []
VOLTAGE GAIN [dB]
VCC=3V
-6
-5
-4
-3
-2
-1
0
-50 0 50 100
TEMPERATURE []
FREQUENCY RESPONSE2:Gf2[dB]
VCC=3V
TEMPERATURE [Deg]
-70
-65
-60
-55
-50
-45
-40
-50 0 50 100
FREQUENCY RESPONSE4:Gf4[dB]
VCC=3V
Ta=25
POWER SUPPLY VOLTAGE [V]
0
1
2
3
4
5
6
7
2.52.72.93.13.33.5
MAX OUTPUT VOLTAGE [VP-P]
Ta=25
-6
-5
-4
-3
-2
-1
0
2.5 2.7 2.9 3.1 3.3 3.5
FREQUENCY RESPONSE2:Gf2[dB]
Ta=25
POWER SUPPLY VOLTAGE: Vcc [V]
BH76812FVM
BH76812FVM
BH76812FVM
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
-50 0 50 100
TEMPERATURE[]
FREQUENCY RESPONSE1:Gf1[dB]
-70
-65
-60
-55
-50
-45
-40
2.5 2.7 2.9 3.1 3.3 3.5
POWER SUPPLY VOLTAGE:Vcc[V]
FREQUENCY RESPONSE4:Gf4[dB]
VCC=3V
BH76812FVM BH76812FVM
BH76812FVM Ta=25
BH76812FVM
BH76812FVM
f=8MHz/100kHz
f=23.5MHz/100kHz
f=23.5MHz/100kHz
f=8MHz/100kHz
f=4. 5MHz/100kHz
f=4. 5MHz/100kHz
TEMPERATURE []
Technical Note
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BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
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Fig. 37 Charge pump load regulation
Fig. 39 Differential phase vs. Temperature
Fig. 33 Output DC voltage – Input DC voltage
Fig. 34 Charge pump oscillation frequency
vs. Supply voltage
Fig. 36 Charge pump output voltage
vs. Supply voltage
Fig. 38 Differential phase vs. Supply voltage
-3
-2.5
-2
-1.5
-1
-0.5
0
0 10203040
LOAD CURRENT [mA]
CHARGEPUMP OUTPUT VOLTAGE [V]
VCC=3V Ta=25
100
140
180
220
260
300
-50 0 50 100
TEMPERATURE []
CHARGEPUMP OSC FREQUENCY [KHz]
VCC=3V
0
0.5
1
1.5
2
2.5
3
-50 0 50 100
TEMPERATURE []
DIFFERENTIAL PHASE [Deg]
VCC=3V
100
140
180
220
260
300
2.5 2.7 2.9 3.1 3.3 3.5
POWER SUPPLY VOLTAGE [V]
CHARGEPUMP OSC FREQUENCY [KHz]
Ta=25
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
0.01.02.03.04.0
POWER SUPPLY VOLTAGE [V]
CHARGEPUMP OUTPUT VOLTAGE [V]
Ta=25
0
0.5
1
1.5
2
2.5
3
2.5 2.7 2.9 3.1 3.3 3.5
POWER SUPPLY VOLTAGE [V]
DIFFERENTIAL PHASE [Deg]
Ta=25
-3
-2
-1
0
1
2
3
-1.5 -1.0 -0.5 0.0 0.5 1.0 1.5
INPUT DC VOLTAGE [V]
OUTPUT DC VOLTAGE [V]
VCC=3V Ta=25
6dB
9dB
12dB
16.5dB
4
4.2
4.4
4.6
4.8
5
5.2
5.4
5.6
5.8
6
-50 0 50 100
TEMPERATURE[V]
MAXIMUM OUTPUT LEVEL:Vomv[Vpp]
Fig. 32 Maximum output level vs. Temperature
BH76812FVM VCC=3V BH76812FVM
BH76812FVM BH76812FVM
BH76812FVM BH76812FVM
BH76812FVM BH76812FVM
Fig. 35 Charge pump oscillation frequency
vs. Temperature
Technical Note
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50
52
54
56
58
60
62
64
66
68
70
2.5 2.7 2.9 3.1 3.3 3.5
POWER SUPPLY VOLTAGE: Vcc[V]
C SYSTEM PM S/N:SNcp[dB]
Fig. 44 S/N(C-AM) vs. Supply Voltage Fig. 45 S/N(C-AM) vs. Temperature
Fig. 40 Differential gain vs. Supply voltage Fig. 41 Differential gain vs. Temperature
Fig. 42 S/N(Y) vs. Supply Voltage
Fig. 46 S/N(C-PM) vs. Supply Voltage Fig. 47 S/N(C-PM) vs. Temperature
Fig.43 S/N(Y) vs. Temperature
0
0.5
1
1.5
2
2.5
3
-50 0 50 100
TEMPERATURE []
DIFFERENTIAL GAIN [%]
VCC=3V
60
65
70
75
80
-50 0 50 100
TEMPERATURE []
Y S/N [dB]
VCC=3V
60
65
70
75
80
-50 0 50 100
TEMPERATURE []
CHROMA S/N (AM) [dB]
VCC=3V
50
55
60
65
70
-50 0 50 100
CHROMA S/N (PM) [dB]
TEMPERATURE []
VCC=3V
0
0.5
1
1.5
2
2.5
3
2.5 2.7 2.9 3.1 3.3 3.5
POWER SUPPLY VOLTAGE [V]
DIFFERENTIAL GAIN [%]
Ta=25
60
65
70
75
80
2.5 2.7 2.9 3.1 3.3 3.5
POWER SUPPLY VOLTAGE [V]
Y S/N [dB]
Ta=25
60
65
70
75
80
2.5 2.7 2.9 3.1 3.3 3.5
POWER SUPPLY VOLTAGE [V]
CHROMA S/N (AM) [dB]
Ta=25
Ta=25
BH76812FVM BH76812FVM
BH76812FVM BH76812FVM
BH76812FVM
BH76812FVM
BH76812FVM
BH76812FVM
Technical Note
15/16
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
www.rohm.com 2014.08 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
Cautions on use
1. Numbers and data in entries are representative design values and are not guaranteed values of the items.
2. 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.
4. Thermal design
Perform thermal design, in which there are adequate margins, by taking into account the permissible dissipation
(Pd) in actual states of use.
5. 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. Operation in strong electromagnetic field
Using the ICs in a strong electromagnetic field can cause operation malfunction.
7. 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)
8. Target capacitor
It is recommended to use a ceramic capacitor with good temperature characteristics (B).
9. 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.
10. 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)
11. The HPF consists of input coupling capacitor C3 and 150 k of 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/(2× C3 × 150 k) (Recommendations: 1.0 µF, B characteristics, 6.3 V or higher maximum voltage)
12. The output resistor R5 should be placed close to the IC.
13. Improper mounting may damage the IC.
14. 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.)
0
5
10
15
20
0.0 0.5 1.0 1.5 2.0
Fig. 48 Circuit current vs. STBY terminal voltage
STBY TERMINAL VOLTAGE [V]
CIRCUIT CURRENT [mA]
VCC=3V Ta=25
BH76812FVM
BH76806FVM, BH76809FVM, BH76812FVM, BH768 oSeleclion of order lype BH76 8 0 T R Tape and Reel Part No. 806FVM information 809FVM 812FVM 816FVM MSOP8 o o o o o O O O o O rmnn rmnn m’mm’ nnnn nnnn . o . . o uuuu uuuu uuuu uuuu uuuu \—‘ \ '\ 4. WWW"°"'“'“°'” 16/16 2014.03 - Rev.B © 2009 ROHM Co” Ltd. A” nghts reserved.
Technical Note
16/16
BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM
www.rohm.com 2014.08 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
Selection of order type
B H 7 6 8 0 T R
Part. No.
F
Tape and Reel
information
V M
BH76806FVM
BH76809FVM
BH76812FVM
BH76816FVM
6
Direction of feed
Reel
Order quantity needs to be multiple of the minimum quantity.
<Tape and Reel information>
Embossed carrier tapeTape
Quantity
Direction
of feed
The direction is the 1pin of product is at the upper right when you hold
reel on the left hand and you pull out the tape on the right hand
3000pcs
TR
()
1pin
MSOP8
<Dimension>
(Unit:mm)
ROHm SEMICONDUCTOR
R1102
A
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
Notice
ROHM Customer Support System
http://www.rohm.com/contact/
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
Notes
The information contained herein is subject to change without notice.
Before you use our Products, please contact our sales representative
and verify the latest specifica-
tions :
Although ROHM is continuously working to improve product reliability and quality, semicon-
ductors can break down and malfunction due to various factors.
Therefore, in order to prevent personal injury or fire arising from failure, please take safety
measures such as complying with the derating characteristics, implementing redundant and
fire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have no
responsibility for any damages arising out of the use of our Poducts beyond the rating specified by
ROHM.
Examples of application circuits, circuit constants and any other information contained herein are
provided only to illustrate the standard usage and operations of the Products. The peripheral
conditions must be taken into account when designing circuits for mass production.
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 or any other
parties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use of
such technical information.
The Products are intended for use in general electronic equipment (i.e. AV/OA devices, communi-
cation, consumer systems, gaming/entertainment sets) as well as the applications indicated in
this document.
The Products specified in this document are not designed to be radiation tolerant.
For use of our Products in applications requiring a high degree of reliability (as exemplified
below), please contact and consult with a ROHM representative : transportation equipment (i.e.
cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety
equipment, medical systems, servers, solar cells, and power transmission systems.
Do not use our Products in applications requiring extremely high reliability, such as aerospace
equipment, nuclear power control systems, and submarine repeaters.
ROHM shall have no responsibility for any damages or injury arising from non-compliance with
the recommended usage conditions and specifications contained herein.
ROHM has used reasonable care to ensur the accuracy of the information contained in this
document. However, ROHM does not warrants that such information is error-free, and ROHM
shall have no responsibility for any damages arising from any inaccuracy or misprint of such
information.
Please use the Products in accordance with any applicable environmental laws and regulations,
such as the RoHS Directive. For more details, including RoHS compatibility, please contact a
ROHM sales office. ROHM shall have no responsibility for any damages or losses resulting
non-compliance with any applicable laws or regulations.
When providing our Products and technologies contained in this document to other countries,
you must abide by the procedures and provisions stipulated in all applicable export laws and
regulations, including without limitation the US Export Administration Regulations and the Foreign
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