Audio I/O. BD3822FS Datasheet

BD3822FS I/O. Datasheet pdf. Equivalent

Part BD3822FS
Description NTSC-PAL Audio I/O
Feature TECHNICAL NOTE Video/Audio Interfaces for TV and DVD Recorders NTSC-PAL Audio I/O Interface for Rec.
Manufacture Rohm
Total Page 9 Pages
Datasheet
Download BD3822FS Datasheet



BD3822FS
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



BD3822FS
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





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