NTSC-PAL Audio I/O Interface for Recording/Playing BD3822FS, BD3824FS

Transcription

1 TEHNIAL NOTE Video/Audio Interfaces for TV and DVD Recorders NTS-PAL Audio I/O Interface for Recording/Playing BD8FS, BD84FS Description BD8FS and BD84FS are the audio selectors with internal input selector, gain amp, AL and power save ON/OFF functions. BD8FS contains the / power compression amp for level meter and ch volume. BD84FS contains the line amp. BD8FS and BD84FS unify the board pattern by pin compatible, and can be used individually as a high-end and low-end model. Features ) Low distortion (.%) and low noise (.μvrms) by using a resistance ladder type circuit for volume. Shock sound in switching is also reduced (BD8FS) ) Low distortion (.%) and low noises (.μvrms)(bd84fs) ) ontains an AL circuit, and can also be used as an RF output 4) Best suited to energy-saving design by low current consumption by using the Bi-MOS process; compact regulator in the set, being advantageous to heating in terms of quality ) SSOP-A is used for package. The PB layout can be easy and the area of PB is reduced by putting sound input terminals together, and output terminals, too. ) BD8FS and BD84FS can be used with the same PB board. 7) I BUS data format of BD8FS is upward compatible with BD84FS, and can be used without changing the software. 8) A system is employed, in which the waveform connected to the input (tuner, Front, Ext) is not distorted even in standby mode. Applications DVD recorder Product lineup Function BD8FS BD84FS Volume function Available - / power compression amp Available - Line amp - Available ircuit current (ma) 7.4 Output noise (μvrms).. BD8FS is an upstream compatible I with BD84FS. Ver.B Oct.

2 Absolute maximum ratings (Ta= ) Parameter Symbol Limits Unit Applied voltage. V Input voltage V IN. GND-. V Power Dissipation Pd 9 * mw Operating temperature Topr -4 8 * Storage temperature Tastg - * Reduced by 7. mw/ at or higher. Thermal resistance ja =. ( /W), when Rohm standard board is mounted. Rohm standard board : Size: 7 7. (mm ) Material: FR4 glass-epoxy substrate (copper foil area: not more than %). * As long as voltage stays within operating voltage range, certain circuit operation is guaranteed in the operating temperature range. Allowable power loss conditions are related to temperature, to which care must be taken. In addition though the standard value of its electrical characteristics cannot be guaranteed under the conditions other than those specified, basic functions are maintained. Operating range (Basic operation at Ta ) Parameter Symbol Min. Typ. Max. Unit Power Supply voltage * V * As long as temperature and operating voltage meet specifications In addition, though the standard value of its electrical characteristics cannot be guaranteed under the conditions other than those specified, basic functions are maintained. /8

3 Electric characteristics BD8FS (Unless specified: Ta=, =9V, f=khz, V IN =Vrms, Rg=, RL=k,Gain Amp=dB,Volume=dB, Input terminal=front,output Terminal=OUT) Parameter Symbol Limits Min. Typ. Max. Unit onditions GENERAL INPUT VOLUME GAIN AMP MUTE AL Square-Law ompression Amp ircuit current upon no signal IQ - 7 ma VIN=Vrms Standby current IOFF - 4 μa Power OFF MODE Voltage gain GV -.. db GV=log(VOUT/VIN) Maximum output voltage VOM.. - Vrms hannel balance B -.. db Total harmonic distortion THD -.. % Output noise voltage * VNO -. μvrms VOM at THD(VOUT)=% BW=4-KHz B = GV-GV GV:chGain GV:ch Gain VIN=Vrms,Volume=-dB Gain Amp=.dB,BW=4-KHz Volume=-dB,Gain Amp=.dB Rg =, BW=IHF-A Residual noise voltage * VNOR - μvrms Volume = - db,rg =, BW=IHF-A ross-talk between channels * T db Rg = BW = IHF-A Input impedance RIN 77 4 k *) Maximum input voltage VIM.. - Vrms ross-talk between selector TS db VIM at THD(VOUT)=% BW=4-KHz *) Rg = BW = IHF-A TS=log(VOUT/VIN) Tuner gain GTU 4 db Tuner gain=db, VIN=.Vrms G=log(VOUT/VIN) Output offset voltage VD - mv Tuner SAP Front Volume control range VV db GV=log(VOUT/VIN),BW = IHF-A Maximum attenuation GV MIN db Volume = - db, BW = IHF-A GV=log(VOUT/VIN) Step resolution GV STEP - - db Volume= -4dB Step resolution GV STEP - - db Volume=-4-78dB Attenuation set error GV ERR - db Volume= -8dB Attenuation set error GV ERR - db Volume=- -78dB Minimum gain GMIN -.. db Gain Amp=dB,G=log(VOUT/VIN) Maximum gain G MAX db Gain Amp=dB,VIN=mVrms G=log(VOUT/VIN) Step resolution G STEP -. - db 4.dB to.db Gain set error G ERR -.. db Mute attenuation GMUTE db Mute ON GMUTE=log(VOUT/VIN) BW = IHF-A Volume=- db, or -78dB AL I/O level AL - - dbv Suppression level is set to -dbv. AL I/O level AL dbv Suppression level is set to -dbv. AL I/O level AL dbv Suppression level is set to -7dBV. Output offset voltage VD OFF - mv VIN =dbv D maximum output voltage VD MAX V VIN =dbv D standard output voltage VD ST...9 V VIN =-dbv D voltage difference between channels D output voltage linearity VD - mv VIN =-dbv VD/ VIN *: ) Refers to,,,9,,,,,4,,,, pin terminals V VIN =- -dbv /8

4 Electric characteristics BD84FS (Unless specified: Ta=, =9V, f=khz, V IN =Vrms, Rg=, RL=k,Gain Amp=dB,Volume=dB, Input terminal=front,output Terminal=OUT) Limits Parameter Symbol Unit onditions Min. Typ. Max. GENERAL INPUT GAINAMP ircuit current upon no signal IQ ma VIN=Vrms Standby current IOFF μa Power OFF MODE Voltage gain GV db GV=log(VOUT/VIN), RL=k Maximum output voltage VOM.8. - Vrms Maximum output voltage VOM.. - Vrms Maximum output voltage VOM.. - Vrms Output terminal = OUT/OUT, RL=k VOM at THD(VOUT)=% Gain Amp=dB, BW=4-kHz Output terminal=rf OUT VOM at THD(VOUT)=% AL=OFF, RL=k BW=4-kHz Output terminal= LINE OUT/LINE OUT VOM at THD(VOUT)=% RL=4.7k External LPF Gvc=dB BW=4-kHz hannel balance B -.. db B = GV-GV GV:chGain GV:ch Gain Total harmonic distortion THD -.. % VIN=Vrms,BW=4-KHz Output noise voltage * VNO -.. μvrms Rg =, BW=IHF-A ross-talk between channels * T db Rg =,BW = IHF-A Input impedance RIN 77 4 k *) Maximum input voltage VIM.. - Vrms ross-talk between selector * TS db Tuner gain GTU 4 db Output offset voltage VD - mv Minimum gain GMIN -.. db Maximum gain GMAX.. db VIM at THD(VOUT)=% BW=4-KHz*) Rg =,BW = IHF-A TS=log(VOUT/VIN) Tuner gain=db VIN=.Vrms, G=log(VOUT/VIN) Tuner Front, Tuner Gain = 8dB Gain Amp=dB G=log(VOUT/VIN) Gain Amp=dB,VIN=mVrms G=log(VOUT/VIN) RF MUTE Mute attenuation GMUTE db Mute ON, BW = IHF-A GMUTE=log(VOUT/VIN) AL AL I/O level AL I/O level AL AL - - dbv Suppression level is set to -dbv dbv Suppression level is set to -dbv. AL I/O level AL dbv Suppression level is set to -7dBV.. *) Refers to,,9,,,,,4,,pin terminals.. VP-99A (Average value detection, effective value display) IHF-A filter by Matsushita ommunication is used fo measurement.. Phase between input/output is the same. 4. This I is not designed to be radiation-resistant. 4/8

5 Example of application circuit Front Front A/D DVD D/A LINE OUT Power ON/OFF.M 4.7 R 4 47k 4 (h) (h) R RF OUT SDA SL D D,4.,4.8,.,.,.4,.,.dB AL / GND I BUS LOGI Power ON/OFF VOL -78dB, - db VOL - 78dB,- db AMP INPUT SELETOR 8,dB (h) (h) (h) (h) (h) (h) (h) (h) (h) (h) R R k 4.7 k 4.7 Tuner Tuner Tuner AP SAP_O Tuner_ Tuner_ AP EXT EXT EXT EXT EXT EXT DET DET SAP Unit R : [ ] : [F] Fig. Example of application circuit (BD8FS) /8

6 Example of application circuit Front Front A/D LINE OUT OUT OUT D/A 7 LINE OUT Power OFF R R R R 4 4 (h) (h) ,dB,dB DVD R R FILTER GND / GND SDA SL I BUS LOGI Power OFF RF OUT SELET -.db -.db AL INPUT SELETOR,8,dB,8,dB N.. (h) (h) N.. N.. (h) (h) (h) (h) (h) (h) (h) (h) R M Tuner Tuner Tuner_Tuner_ AP EXT EXT EXT EXT EXT EXT RF BIAS Fig. Example of application circuit (BD84FS) Unit R : [ ] : [F] Reference data QUIESENT URRENT : IQ [ma] QUIESENT URRENT : IQ[mA] TOTAL HARMONI DISTORTION : THDN[%] m m m SUPPLY VOLTAGE : [V] Fig. Quiescent current vs Supply voltage (BD8FS) SUPPLY VOLTAGE : [V] Fig.4 Quiescent current vs Supply voltage (BD84FS) OUTPUT VOLTAGE : VOUT[Vrms] Fig. Total harmonic distortion vs Output voltage (BD8FS) /8

7 TOTAL HARMONI DISTORTION : THDn m m m 8 OUTPUT VOLTAGE : VOUT [Vrms] VOLTAGE GAIN : GV [db] k k k FREQUENY : f [Hz] VOLTAGE GAIN : GV [db] k k k FREQUENY : f [Hz] Fig. Total harmonic distortion vs Output voltage (BD84FS) Fig.7 Voltage gain vs Frequency (BD8FS) Fig.8 Voltage gain vs Frequency (BD84FS) - OUTPUT VOLTAGE : VOUT [Vrms] m -dbv m -dbv -7dBV m u m m m OUTPUT VOLTAGE : VOUT [V] 4 m.. MAXIMUM OUTPUT VOLTAGE : V OUT [Vrms] INPUT VOLTAGE : VIN [Vrms] INPUT VOLTAGE : VIN [Vrms] LOAD RESISTANE : RL [Hz] Fig.9 AL I/O characteristic (BD8FS) Fig. Square-Low ompression amp I/O characteristic (BD84FS) Fig. Output load characteristic (BD8FS, BD84FS) Operation Notes. 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 I. Allow for sufficient margins when determining circuit constants.. Absolute maximum ratings Use of the I in excess of absolute maximum ratings, such as the applied voltage or operating temperature range (Topr), may result in I damage. Assumptions should not be made regarding the state of the I (short mode or open mode) when such damage is suffered. A physical safety measure, such as a fuse, should be implemented when using the I at times where the absolute maximum ratings may be exceeded. 4. GND potential Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the GND at any time, regardless of whether it is a transient signal or not.. Thermal design 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 Is. Wrong mounting direction or shorts between terminals, GND, or other components on the circuits, can damage the I. 7. Operation in strong electromagnetic field Using the Is in a strong electromagnetic field can cause operation malfunction. 7/8

8 Selection of order type B D 8 F S E Part No. BD8FS BD84FS Tape and Reel information SSOP-A <Dimension> <Tape and Reel information> Tape Embossed carrier tape Quantity pcs 7.8 ±..4 ±.. ±. 7.Min. Direction of feed E (orrect direction: pin 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).8 ±...8. ±... ± Unit:mm) Reel pin Direction of feed Orders are available in complete units only. The contents described herein are correct as of October, The contents described herein are subject to change without notice. For updates of the latest information, please contact and confirm with ROHM O.,LTD. Any part of this application note must not be duplicated or copied without our permission. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams and information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM O.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM O., LTD. is granted to any such buyer. The products described herein utilize silicon as the main material. The products described herein are not designed to be X ray proof. Published by Application Engineering Group 8/8 atalog NO.T9Be '. ROHM TSU

9 Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM O.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM O.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM O., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the NOTES specified in this catalog. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact your nearest sales office. ROHM ustomer Support System THE AMERIAS / EUROPE / ASIA / JAPAN ontact us : webmaster@ rohm.co.jp opyright 8 ROHM O.,LTD. Saiin Mizosaki-cho, Ukyo-ku, Kyoto -88, Japan TEL : FAX : Appendix-Rev.