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PDF BD3823FV Data sheet ( Hoja de datos )
| Número de pieza | BD3823FV | |
| Descripción | NTSC-PAL Audio I/O | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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TECHNICAL NOTE
Video / Audio Interfaces for TV and DVD Recorders
NTSC-PAL Audio I/O
Interface for Recording
BD3823FV
ƔDescription
BD3823FV is a low-noise (3.2ҏμVrms), low distortion (0.0015%), 5ch selector, incorporating a resistor-ladder type
volume.
Because of a wide power supply voltage range (7V to 14.5V), BD3823FV can meet a wide input voltage (to 4.5 Vms), and high S/N
can be achieved. In addition, the built-in volume does not add any distortion ratio characteristics, even when the attenution is varied,
and is applicable for high-quality audio systems.
ƔFeatures
1) A resistor-ladder type volume circuit is with a low distortion ratio (0.0015% with volume set to –6dB) and low noise (3.2 ȝVrms with
volume set to -6dB).
2) By grouping sound input terminals with output terminals, the PCB layout is reduced.
3) Small package SSOP - B20 achieves good crosstalk characteristicss (-110 dB).
4) The use of Bi-CMOS process enables low current consumption and energy saving design.
Because of low current consumption, BD3823FV has the advantage in quality over the scaling down of the internal regulators and
heat controls.
ƔApplications
DVD recorders
ƔAbsolute maximum rating (Ta=25°C)
Parameter
Symbol
Limits
Unit
Applied Voltage
VCC
SCL, SDA
15.0
7.0
V
Input voltage
Power Dissipation
VIN
VCC+0.3̻GND-0.3
V
Pd
810 *1
mW
Operating Temperature
Topr
-40䌾+85 *2
°C
Storage Temperature
Tastg
-55̻+150
°C
*1 Reduced by 6.5 mW/qC at 25qC or higher.
Thermal resistance Tja = 154 (°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 Ta=25ͨ)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Power supply voltage *3
VCC 7.0 12.0 14.5
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.
Ver.B Oct.2005
!
1 page  
ƔApplication circuit diagram
VCC
SELECT
80HEX 84HEX
㪉㪇㩷
DVD
A/D
OUT1
OUT2 VCC
㪚㪈㪌㩷
10ȝ
㪈㪐㩷
㪚㪈㪋㩷
10ȝ
㪈㪏㩷
㪈㪎㩷
VRR
FILTER AGND
㪚㪈㪊㩷
10ȝ
㪚㪈㪉㩷
10ȝ
㪚㪈㪈㩷
㪊㪊㩷 10ȝ
㪈㪍㩷 㪈㪌㩷 㪈㪋㩷
SCL
㪈㪊㩷
SDA
㪈㪉㩷
DGND
㪈㪈㩷
VCC
Regulator
AGND
1/2VCC
I2C
LOGIC㩷
DGND
0䌾-30.5dB/0.5dB step -㺙
0䌾-30.5dB/0.5dB step -㺙
GAIN SELECTOR
0, 2, 4, 6dB㩷
INPUT
㪈㪈㪇㫂㩷
㪈㩷
㪈㪈㪇㫂㩷
㪉㩷
㪈㪈㪇㫂㩷
㪊㩷
㪈㪈㪇㫂㩷
㪋㩷
㪈㪈㪇㫂㩷
㪌㩷
㪈㪈㪇㫂㩷
㪍㩷
㪈㪈㪇㫂㩷
㪎㩷
㪈㪈㪇㫂㩷
㪏㩷
㪈㪈㪇㫂㩷
㪐㩷
㪈㪈㪇㫂㩷
㪈㪇㩷
㪚㪈㩷
1ȝ
㪚㪉㩷 㪚㪊㩷
1ȝ 1ȝ
㪚㪋㩷 㪚㪌㩷 㪚㪍㩷 㪚㪎㩷 㪚㪏㩷 㪚㪐㩷 㪚㪈㪇㩷
1ȝ 1ȝ 1ȝ 1ȝ 1ȝ 1ȝ 1ȝ
Front1
Front2
Tuner1
Tuner2 EXT11 EXT12 EXT21 EXT22
Fig.2! Application Circuit Diagram
EXT31
EXT32
Pin No. Pin Name
Pin Description
1 Front1 Front 1ch input terminal
2 Front2 Front 2ch input terminal
3 Tuner1 Tuner 1 ch input
4 Tuner2 Tuner 2 ch input
5 EXT11 External 1 1ch input terminal
6 EXT12 External 1 2ch input terminal
7 EXT21 External 2 1ch input terminal
8 EXT22 External 2 2ch input terminal
9 EXT31 External 3 1ch input terminal
10 EXT32 External 3 2ch input terminal
Pin No. Pin Name
Pin Description
11 DGND Ground ternial
12 SDA I2C communication data terminal
13
SCL
I2C communication clock
terminal
14 AGND Ground terminal
15 FILTER 1/2VCC terminal
16 VRR Ripple filter terminal
17 VCC Power supply terminal
18 OUT2 Volume 2ch output terminal
19 OUT1 Volume 1ch output terminal
20 SELECT Slave address selection terminal
5/8
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet BD3823FV.PDF ] | |
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