DatasheetsPDF.com

BD3824FS Dataheets PDF



Part Number BD3824FS
Manufacturers Rohm
Logo Rohm
Description NTSC-PAL Audio I/O
Datasheet BD3824FS DatasheetBD3824FS Datasheet (PDF)

TECHNICAL NOTE Video/Audio Interfaces for TV and DVD Recorders NTSC-PAL Audio I/O Interface for Recording/Playing BD3822FS, BD3824FS ƔDescription BD3822FS and BD3824FS are the audio selectors with internal input selector, gain amp, ALC and power save ON/OFF functions. BD3822FS contains the 1/2 power compression amp for level meter and 2ch volume. BD3824FS contains the line amp. BD3822FS and BD3824FS unify the board pattern by pin compatible, and can be used individually as a high-end and low-e.

  BD3824FS   BD3824FS



Document
TECHNICAL NOTE Video/Audio Interfaces for TV and DVD Recorders NTSC-PAL Audio I/O Interface for Recording/Playing BD3822FS, BD3824FS ƔDescription BD3822FS and BD3824FS are the audio selectors with internal input selector, gain amp, ALC and power save ON/OFF functions. BD3822FS contains the 1/2 power compression amp for level meter and 2ch volume. BD3824FS contains the line amp. BD3822FS and BD3824FS unify the board pattern by pin compatible, and can be used individually as a high-end and low-end model. ƔFeatures 1) Low distortion (0.0015%) and low noise (3.2μVrms) by using a resistance ladder type circuit for volume. Shock sound in switching is also reduced (BD3822FS) 2) Low distortion (0.0015%) and low noises (2.3μVrms)(BD3824FS) 3) Contains an ALC 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-CMOS process; compact regulator in the set, being advantageous to heating in terms of quality 5) SSOP-A32 is used for package. The PCB layout can be easy and the area of PCB is reduced by putting sound input terminals together, and output terminals, too. 6) BD3822FS and BD3824FS can be used with the same PCB board. 7) I2C BUS data format of BD3822FS is upward compatible with BD3824FS, 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. ƔApplications DVD recorder ƔProduct lineup Function BD3822FS Volume function Available 1/2 power compression amp Available Line amp - Circuit current (mA) 7 Output noise (μVrms) 3.2 BD3822FS is an upstream compatible IC with BD3824FS. BD3824FS - Available 6.4 2.3 Ver.B Oct.2005 ƔAbsolute maximum ratings (Ta=25qC) Parameter Symbol Limits Unit Applied voltage VCC 10.0 V Input voltage Power Dissipation Operating temperature VIN Pd Topr VCC+0.3̻GND-0.3 950 *1 -40̻+85 *2 V mW qC Storage temperature Tastg -55̻+150 qC *1 Reduced by 7.6 mW/qC at 25qC or higher. Thermal resistance Tja = 131.6 (°C/W), when Rohm standard board is mounted. Rohm standard board : Size:70͙70͙1.6 (mm3) Material: FR4 glass-epoxy substrate (copper foil area: not more than 3%). *2 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. ƔOperating range (Basic operation at Ta͛25qC) Parameter Symbol Min. Typ. Max. Unit Power Supply voltage *3 VCC 7.0 - 9.5 V *3 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. 2/8 Ɣ Electric characteristics BD3822FS (Unless specified: Ta=25ͨ, VCC=9V, f=1kHz, VIN=1Vrms, Rg=600Ԉ, RL=10kԈ,Gain Amp=0dB,Volume=0dB, Input terminal=Front1,Output Terminal=OUT1) Parameter Limits Symbol Min. Typ. Max. Unit Conditions GENERAL INPUT Circuit current upon no signal IQ - 7 30 mA VIN=0Vrms Standby current IOFF - 540 1000 μA £Power OFF¤ MODE Voltage gain GV -1.5 0 1.5 dB GV=20log(VOUT/VIN) Maximum output voltage VOM 2.0 2.5 - Vrms VOM at THD(VOUT)=1% BW=400-30KHz Channel balance CB -1.5 0 1.5 dB CB = GV1-GV2 GV1:ch1Gain GV2:ch2 Gain Total harmonic distortion THD - 0.0015 0.05 % VIN=2Vrms,Volume=-12dB Gain Amp=5.6dB,BW=400-30KHz Output noise voltage * VNO - 3.2 16 μVrms Volume=-12dB,Gain Amp=5.6dB Rg = 0Ԉ, BW=IHF-A Residual noise voltage * VNOR - 2 10 μVrms Volume = -͡dB,Rg = 0Ԉ, BW=IHF-A Cross-talk between channels * CTC - -110 -80 dB Rg = 0Ԉ̜BW = IHF-A Input impedance RIN 77 110 143 kԈ *1) Maximum input voltage VIM 2.1 2.5 - Vrms VIM at THD(VOUT)=1% BW=400-30KHz *1) Cross-talk between selector CTS - -110 -80 dB Rg = 0Ԉ̜BW = IHF-A CTS=20log(VOUT/VIN) Tuner gain GTU 10 12 14 dB Tuner gain=12dB, VIN=0.25Vrms G=20log(VOUT/VIN) Output offset voltage VDC -20 0 20 mV Tuner SAPΦFront1 Volume control range VV1 -81 -78 -75 dB GV=20log(VOUT/VIN),BW = IHF-A Maximum attenuation GV MIN1 - -106 -85 dB Volume = -͡dB, BW = IHF-A GV=20log(VOUT/VIN) Step resolution 1 GV STEP1 - 1 - dB Volume=0̻-46dB Step resolution 2 GV STEP2 - 2 - dB Volume=-46̻-78dB Attenuation set error 1 GV ERR1 -2 0 2 dB Volume=0̻-58dB Attenuation set error 2 GV ERR2 -3 0 3 dB Volume=-60̻-78dB Minimum gain GMIN -1.5 0 1.5 dB Gain Amp=0dB,G=20log(VOUT/VIN) Maximum gain G MAX 4.5 6 7.5 dB Gain Amp=6dB,VIN=500mVrms G=20log(VOUT/VIN) Step resolution G STEP - 0.2 - dB 4.6dB to 5.6dB Gain set error G ERR -1.5 0 1.5 dB Mute ON Mute attenuation GMUTE - -110 -85 d.


BD3815KS BD3824FS BD3860K


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)