BH76809FVM

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 2) Large-output video driver with maximum output voltage of 5.2 Vpp. 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 ●Absolute maximum ratings Parameter Supply voltage Power dissipation Operating temperature range Storage temperature range （Ta=25℃） Symbol Vcc Pd Topr Tstg Ratings 3.55 470 -40～+85 -55～+125 Unit V mW Video driver amp gain 6dB 9dB 12dB 16.5dB Recommended input level 1Vpp 0.7Vpp 0.5Vpp 0.3Vpp ℃ ℃ ＊ Reduce by 4.7 mW/C over 25C, when mounted on a 70mm×70mm×1.6mm PCB board. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 1/16 2009.03 - Rev.A 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 Circuit current 2 Standby SW input current High-Level Standby switching voltage High-Level Standby Switching voltage Low-Level Voltage gain Maximum output level Frequency characteristic 1 Frequency characteristic 2 Frequency characteristic 3 Frequency characteristic 4 Differential Gain Differential Phase Y signal output S/N Symbol ICC1 ICC2 IthH VthH VthL GV Vomv Gf1 Gf2 Gf3 Gf4 DG DP SNY +74 +73 6.0 Typical value BH76806 FVM BH76809 FVM BH76812 FVM BH76816 FVM Unit mA Conditions No signal Standby mode When 3.0 V is applied to 4pin standby OFF standby ON Vo=100KHz, 1.0Vpp f=1KHz,THD=1% f=4.5MHz/100KHz f=8.0MHz/100KHz f=18MHz/100KHz f=23.5MHz/100KHz Vo=1.0Vp-p Standard stair step signal Vo=1.0Vp-p Standard stair step signal Band = 100 kHz to 6 MHz 75 Ω termination 100% chroma video signal Band = 100～500KHz 75Ωtermination 100％chroma video signal Band = 100～500KHz 75Ωtermination 100％chroma video signal 4.5 V applied via 150 Ω to output pin 75 Ω termination 16 0.0 45 1.2V min 0.45Vmax 9.0 5.2 -0.45 -3.0 -32 -51 0.5 1.0 +70 12.0 15 μA μA V V 16.5 dB Vpp dB dB dB dB % deg +70 dB C signal output S/N (AM) SNCA +77 +76 +75 +75 dB C signal output S/N (PM) Output pin source current Output DC offset voltage SNCP lextin Voff +65 30 ±50max dB mA mV www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 2/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM ●Measurement circuit Technical Note 1. 0 u F 1 1 S W2 A 8 IN C HA RGE PU MP GND OUT 2 0. 1 u NV CC 6d B/ 9d B / L PF 150K 7 1. 0 u F V V2 ( V C C) 2 10 u S W3 0. 1 u OS C 1 50 3 12 d B /1 6. 5d B 6 4. 7 u 7 5 V V4 4 5 75 ※ Test circuit is intended for shipment inspections, and differs from application circuit. Fig. 1 ●Control pin settings Parameter States H Standby（4pin） L OPEN Note Active Standby Standby ●Block diagram C1 C1 1 IN OUT C2 8 C2 CHARGE PUM P GND 6dB/9dB/ VCC VCC 2 NVCC NVCC 7 NVCC VVin in 3 150K LPF 12dB/16.5dB AMP 6 GND GND STBY ST BY 4 5 Vout Vout Fig.2 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 3/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM ●Pin descriptions Pin No. 1 Pin name C1 VCC VCC Technical Note equivalent circuit DC voltage +VCC ↑↓ 0V C1 Functions Flying capacitor "+" pin See function description for pins 7 and 8 GND GND NVCC 2 VCC VCC VCC Pin VCC Video signal input pin VIN 3 VIN VIN 100 4 . 1k 4 . 1k 0V 1μF Adaptive input signal Composite video signal/ chroma signal/RGB signal, etc. 150k 150K NVCC VCC VCC STBY 50K 250K 200K NV 4 STBY VCC to 0V GND GND ACTIVE/STANBY Switching Pin Terminal MODE Votage 1.2V～VCC ACTIVE (H) 0V～0.45V STANBY (L) VCC VCC Video signal output pin VOUT 5 VOUT 0V VOUT 75Ω 75Ω NVCC NVCC 1K VCC 6 GND NVCC GND 0V GND Pin ＊1 ＊2 The DC voltage in the figure is VCC = 3.0 V. These values are for reference only and are not guaranteed. These values are for reference only and are not guaranteed. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 4/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM ●Pin descriptions Technical Note Flying capacitor “-”pin (8pin) VCC GND VCC 7 NVCC VCC C2 -VCC C1 (-2.75V) 0V GND VCC VCC C2 0V ↑↓ -VCC (-2.75V) 8 C2 NVCC NVC Load voltage pins (7 pins) NVC ＊1 ＊2 The DC voltage in the figure is VCC = 3.0 V. These values are for reference only and are not guaranteed. 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) VCC Output capacitor is required due to DC voltage at output pin Amp (Dual power supply) VCC Output capacitor is not required since DC voltage is not applied to output pin 75Ω 1000μF 75Ω -VCC 75Ω 75Ω 1/2VCC Bias Fig.3 Fig.4 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 Ω (75 Ω + 75 Ω). 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 ROHM Co., Ltd. All rights reserved. 5/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM Technical Note Vcc +3V charge current Vcc +3V charge current SW1 SW2 + SW1 － SW2 Load capacitor + － -Vcc is generated Flying capacitor charge current 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 1μF 150k AMP Dual power supply amp 75Ω 75Ω アンプ H768xxFVM VCC -VCC Charge Pump Single chip integration Output capacitor not required for single power supply either. 3.3μF Charge pump 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 kΩ 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 kΩ) 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. 6/16 2009.03 - Rev.A 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 Ω driver. 1 μF X 150 KΩ = 1000 μF X 150 Ω (Input terminal time constant) (Output terminal time constant) Fig. 7 1μF 150k Technical Note 75Ω+75Ω=150Ω Sag a) Sag-free video signal (TG-7/1 output, H-bar) H-bar signal's TV screen output image b) Fig. 8 BH768xxFVM output (input = 1.0 µF, TG-7/1 output, H-bar) 75Ω Monitor 1μF 150k TG-7/1 75Ω 75Ω BH768xxFVM Fig. 9 Nearly identical sag characteristics c) 1000 uF + 150 Ω sag waveform (TG-7/1 output, H-bar) Monitor 75Ω 1000μF TG-7/1 75Ω Fig. 10 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 7/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM ●Application circuit 1.0μF(C18) Technical Note 1 ※ 10Ω(R2) 2 3.3μF (C2) VIDEO IN 1.0μF(C3) L:Standby 4 3 150k LPF IN CHARGE PUNP GND OUT 8 7 NVCC 6dB/9dB/ 12dB/16.5dB 6 1.0μF(C7) 75Ω(R5) 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 ROHM Co., Ltd. All rights reserved. 8/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM 1.Effects of charge pump circuit’s current ripple 10 Ω Technical Note Vcc Vcc pin 1μ F 2.Current ripple affects DAC, etc. 1μ F DAC etc. VIN VIDEO AMP 150kΩ 75 Ω 3.3μF VOUT 75Ω -Vcc Charge Pump 1μ F 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 Current waveform (B) between capacitor and IC 10mA/div A A AB Vcc 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 Vc c Current waveform (C)between single power supply and capacitor 10mA/div A C V cc 10Ω A A B A Fig.14 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 9/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM ●Pattern diagram of evaluation board Technical Note STBY GND ACT VIN R3 GND R2 VOUT C4 C3 R1 C2 VCC GND C1 GND GND GND ROHM GND BH76806/09/12/16FVM ●List of external components Symbol C1 C2 C3 C4 R1 R2 R3 Function Flying capacitor Tank capacitor Input coupling capacitor Decoupling capacitor Output resistor Output terminating resistance Input terminating resistance Input connector Output connector Fig. 15 Recommended value 1μF 1μF 1μF 3.3μF 75Ω 75Ω 75Ω BNC RCA (pin jack) Remark B characteristics are recommended B characteristics are recommended B characteristics are recommended B characteristics are recommended － Not required when connecting to TV or video signal test equipment. Required when connecting to video signal test equipment. www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 10/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM ●Reference data BH76812FVM 30 25 20 15 10 5 0 0 1 2 3 4 Technical Note Ta=25℃ 1 BH76812FVM Ta=25℃ CIRCUIT CURRENT [mA] STANDBY CURRENT [uA] 0.8 0.6 0.4 0.2 0 2.5 POWER SUPPLY VOLTAGE [V] 2.7 2.9 3.1 3.3 POWER SUPPLY VOLTAGE [V] 3.5 Fig. 16 Circuit current vs. Supply voltage BH76812FVM 20 Fig. 17 Circuit Current (Standby) vs. Supply Voltage VCC=3V VCC=3V 1 BH76812FVM CIRCUIT CURRENT [mA] 16 STANDBY CURRENT [uA] 18 0.8 0.6 14 12 0.4 0.2 0 -50 0 50 TEMPERATURE [℃] 100 10 -50 0 50 100 TEMPERATURE [℃] Fig. 18 Circuit current vs. Temperature BH76812FVM 50 Fig. 19 Circuit Current (Standby) vs. Temperature BH76812FVM 50 VCC=3V Ta=25℃ VOUT DC OFFSET [mV] VOUT DC OFFSET [mV] 25 25 0 0 -25 -25 -50 2.5 2.7 2.9 3.1 3.3 POWER SUPPLY VOLTAGE [V] 3.5 - 50 -50 0 50 TEMPERATURE [℃] 100 Fig. 20 Vout DC offset voltage vs. Supply voltage BH76812FVM VCC=3V Ta=25℃ Fig. 21 Vout DC offset voltage vs. Temperature BH76812FVM 12.5 12.4 12.3 Ta=25℃ 5 -5 VOLTAGE GAIN [dB] -25 -35 -45 -55 -65 -75 0.1 10 1 FREQUENCY [MHz] 100 VOLTAGE GAIN [dB] -15 12.2 12.1 12 11.9 11.8 11.7 11.6 11.5 2.5 2.7 2.9 3.1 3.3 POWER SUPPLY VOLTAGE [V] 3.5 Fig. 22 Frequency characteristic Fig. 23 Voltage gain vs. Supply voltage www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 11/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM BH76812FVM Technical Note BH76812FVM 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] VCC=3V Ta=25℃ 12.5 FREQENCY RESPONSE1:Gf1[dB] 12.4 VOLTAGE GAIN [dB] f=4. 5MHz/100kHz 12.3 12.2 12.1 12 11.9 11.8 11.7 11.6 11.5 -50 0 50 100 TEMPERATURE [℃] Fig. 24 Voltage gain vs. Temperature BH76812FVM 1 FREQUENCY RESPONSE1:Gf1[dB] 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 -50 0 50 100 TEMPERATURE[℃] Fig. 25 Frequency response 1 vs. Supply voltage BH76812FVM 0 VCC=3V f=4. 5MHz/100kHz FREQUENCY RESPONSE2:Gf2[dB] Ta=25℃ f=8MHz/100kHz -1 -2 -3 -4 -5 -6 2.5 2.7 2.9 3.1 3.3 3.5 POWER SUPPLY VOLTAGE: Vcc [V] Fig. 26 Frequency response 1 vs. Temperature BH76812FVM Fig. 27 Frequency response 2 vs. Supply voltage BH76812FVM FREQUENCY RESPONSE4:Gf4[dB] -40 f=23.5MHz/100kHz -45 -50 -55 -60 -65 -70 2.5 2.7 2.9 3.1 3.3 3.5 POWER SUPPLY VOLTAGE:Vcc[V] Ta=25℃ VCC=3V 0 FREQUENCY RESPONSE2:Gf2[dB] -1 -2 -3 -4 -5 -6 -50 f=8MHz/100kHz 0 50 TEMPERATURE [℃] 100 Fig. 28 Frequency response 2 vs. Temperature Fig.29 Frequency response 4 vs. Supply voltage BH76812FVM VCC=3V 7 BH76812FVM -40 FREQUENCY RESPONSE4:Gf4[dB] MAX OUTPUT VOLTAGE [Vpp] Ta=25℃ -45 -50 -55 -60 -65 -70 -50 0 f=23.5MHz/100kHz 6 5 4 3 2 1 0 50 100 2.5 TTEMPERATURE℃] EMPERATURE [ [Deg] 2.7 2.9 3.1 3.3 POWER SUPPLY VOLTAGE [V] 3.5 Fig. 30 Frequency response 4 vs. Temperature Fig. 31 Maximum output voltage level vs. Supply voltage www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 12/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM BH76812FVM MAXIMUM OUTPUT LEVEL:Vomv[Vpp] 6 5.8 5.6 5.4 5.2 5 4.8 4.6 4.4 4.2 4 -50 0 50 100 TEMPERATURE[V] -3 -1.5 -1.0 Technical Note BH76812FVM 3 VCC=3V VCC=3V Ta=25℃ OUTPUT DC VOLTAGE [V] 2 1 0 -1 -2 6dB 9dB 12dB 16.5dB -0.5 0.0 0.5 1.0 INPUT DC VOLTAGE [V] 1.5 Fig. 32 Maximum output level vs. Temperature BH76812FVM CHARGEPUMP OSC FREQUENCY [KHz] 300 Fig. 33 Output DC voltage – Input DC voltage BH76812FVM CHARGEPUMP OSC FREQUENCY [KHz] Ta=25℃ 300 VCC=3V 260 260 220 220 180 180 140 140 100 2.5 2.7 2.9 3.1 3.3 3.5 100 -50 0 50 100 POWER SUPPLY VOLTAGE [V] TEMPERATURE [℃] Fig. 34 Charge pump oscillation frequency vs. Supply voltage BH76812FVM CHARGEPUMP OUTPUT VOLTAGE [V] Fig. 35 Charge pump oscillation frequency vs. Temperature BH76812FVM CHARGEPUMP OUTPUT VOLTAGE [V] 0 -0.5 -1 -1.5 -2 -2.5 -3 0 10 20 30 LOAD CURRENT [mA] 40 Ta=25℃ 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 - 4.0 0.0 1.0 2.0 3.0 POWER SUPPLY VOLTAGE [V] 4.0 VCC=3V Ta=25℃ Fig. 36 Charge pump output voltage vs. Supply voltage BH76812FVM 3 Fig. 37 Charge pump load regulation BH76812FVM 3 Ta=25℃ VCC=3V DIFFERENTIAL PHASE [Deg] DIFFERENTIAL PHASE [Deg] 2.5 2 1.5 1 0.5 0 2.5 2.5 2 1.5 1 0.5 0 -50 2.7 2.9 3.1 3.3 POWER SUPPLY VOLTAGE [V] 3.5 0 50 TEMPERATURE [℃] 100 Fig. 38 Differential phase vs. Supply voltage Fig. 39 Differential phase vs. Temperature www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 13/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM BH76812FVM 3 2.5 Technical Note BH76812FVM 3 2.5 Ta=25℃ VCC=3V DIFFERENTIAL GAIN [%] DIFFERENTIAL GAIN [%] 2 1.5 1 0.5 0 2.5 2 1.5 1 0.5 0 -50 2.7 2.9 3.1 3.3 POWER SUPPLY VOLTAGE [V] 3.5 0 50 TEMPERATURE [℃] 100 Fig. 40 Differential gain vs. Supply voltage BH76812FVM 80 Ta=25℃ Fig. 41 Differential gain vs. Temperature BH76812FVM 80 VCC=3V 75 Y S/N [dB] Y S/N [dB] 75 70 70 65 65 60 2.5 2.7 2.9 3.1 3.3 POWER SUPPLY VOLTAGE [V] 3.5 60 -50 0 50 100 TEMPERATURE [℃] Fig. 42 S/N(Y) vs. Supply Voltage Fig.43 S/N(Y) vs. Temperature BH76812FVM 80 Ta=25℃ BH76812FVM VCC=3V 80 CHROMA S/N (AM) [dB] 75 CHROMA S/N (AM) [dB] 2.7 2.9 3.1 3.3 POWER SUPPLY VOLTAGE [V] 3.5 75 70 70 65 65 60 2.5 60 -50 0 50 TEMPERATURE [℃] 100 Fig. 44 S/N(C-AM) vs. Supply Voltage BH76812FVM 70 68 C SYSTEM PM S/N:SNcp[dB] 66 Fig. 45 S/N(C-AM) vs. Temperature BH76812FVM Ta=25℃ VCC=3V 70 62 60 58 56 54 52 50 2.5 2.7 2.9 3.1 3.3 3.5 POWER SUPPLY VOLTAGE: Vcc[V] CHROMA S/N (PM) [dB] 64 65 60 55 50 -50 0 50 100 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. 14/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM BH76812FVM 20 VCC=3V Ta=25℃ Technical Note CIRCUIT CURRENT [mA] 15 10 5 0 0.0 0.5 1.0 1.5 CTL TERMINAL VOLTAGE [V] 2.0 Fig. 48 Circuit current vs. CTL terminal voltage ●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. 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) 8. 9. 10. Target capacitor 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) 11. The HPF consists of input coupling capacitor C3 and 150 kΩ 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/(2π× C3 × 150 kΩ) (Recommendations: 1.0 µF, B characteristics, 6.3 V or higher maximum voltage) 12. 13. 14. The output resistor R5 should be placed close to the IC. 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 Ω) in the VCC line to improve the power supply's ripple effects. Although inserting a 10 Ω 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.) www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 15/16 2009.03 - Rev.A BH76806FVM, BH76809FVM, BH76812FVM, BH76816FVM ●Selection of order type Technical Note B H 7 6 8 0 6 F V M T R Part. No. BH76806FVM BH76809FVM BH76812FVM BH76816FVM Tape and Reel information MSOP8 Tape Quantity 2.9 ± 0.1 Embossed carrier tape 3000pcs TR (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) 4.0 ± 0.2 8 5 2.8 ± 0.1 1 4 0.475 0.9Max. 0.75 ± 0.05 0.08 ± 0.05 0.22 0.65 +0.05 −0.04 0.29 ± 0.15 0.6 ± 0.2 Direction of feed 0.145 +0.05 −0.03 0.08 M 0.08 S XX X X XXX XX X X XXX XX X X XXX XX X X XXX XX X X XXX 1Pin Reel Direction of feed ※Orders are available in complete units only. (Unit:mm) www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. 16/16 2009.03 - Rev.A Notice Notes 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, communication 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. R0039A