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CXA1785 Folha de dados(PDF) 10 Page - Sony Corporation

Nome de Peças CXA1785
Descrição Electrónicos  US Audio Multiplexing Decoder
Download  29 Pages
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Fabricante Electrônico  SONY [Sony Corporation]
Página de início  http://www.sony.co.jp
Logo SONY - Sony Corporation

CXA1785 Folha de dados(HTML) 10 Page - Sony Corporation

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CXA1785AR
Electrical Characteristics
AC Characteristics
Unless otherwise specified, VCC1 = 4.5 V, VCC2 = 12 V, VEE = GND, Ta = 25°C, SW5
→a, SW8→a, SW9→b,
SW10
→b, SW12A→a, SW12B→ON, SW13→b, SW20→OFF, SW22→OFF, SW24→OFF SW26→OFF,
SW27
→OFF, SW28→OFF, SW31→OFF, SW33→b, SW34→OFF, SW35→OFF, SW38→a, SW46→OFF. V5 =
0 V, V6 = 2.6 V, V13 = 2.7 V, V30 = 3.5 V, V32 = 2.1 V, V42 = 2.25 V, V46 = 1.5 V, V48 = 2.5 V, and VR1=6.8 k
(C): input SG11, (D): input SG7b (4.5 VP-P)
Note) Adjust the burst cleaning coil so that the amplitude of the color difference signal is the same at each 1H
of TP20 when SG5 (4.43 MHz, burst/chroma phase = ±135°) is input to (B) with a standard sample.
V42 = 1.2 V, input SG8 (-15 dB) to (A).
Measure the ratio between the output
amplitude (white-black) and input amplitude
at TP22.
Input SG8 (-14 dB) to (A). V1, V0, and V2
are the output amplitude (white-black) at
TP22 when V42 is changed to 1.2 V, 2.25 V
and 3.3 V.
Gct1 = 20log (V1/V0) Gct2 = 20log (V2/V0)
Input SG1 (0 dB) to (A) and adjust V42 so
that TP22 output amplitude (white-black) is
4 V when APL = 50 %
Va1 and Va2 are the amplitude at TP22
when APL = 10 % and 90 %.
Input SG1 (0 dB) to (A). Vad1, Vad2, and
Vad3 are the voltage at TP47 when APL =
10 %, 50 %, and 90 %.
SW5
→b, SW46→ON
Input SG2 (100 kHz) to (A) and adjust V42
so that the amplitude of the sine wave at
TP22 is 0.5 VP-P. Gp1 and Gp2 are the
amount of change in the output amplitude at
TP22 when SG2 is 2.1 MHz and V48 = 2 V
and 3 V.
SW5
→b, SW13→a, SW46→ON
Input SG2 (100 kHz) to (A) and adjust V42
so that the amplitude of the sine wave at
TP22 is 0.5 VP-P. Gp3 and Gp4 are the
amount of change in the output amplitude at
TP22 when SG2 is 2.4 MHz and V48 = 2 V
and 3 V.
Gmax
Gct1
Gct2
Va1
Va2
Vad1
Vad2
Vad3
Gp1
Gp2
Gp3
Gp4
Video Block
Video maximum gain
Amount of contrast ad-
justment gain variation
(1)
Amount of contrast ad-
justment gain variation
(2)
AGC amplitude char-
acteristics
AGC detection output
Amount of image qual-
ity adjustment variation
(composite video input,
NTSC)
Amount of image qual-
ity adjustment variation
(composite video input,
PAL)
33
36
39
3.0
5.5
dB
- 15
- 11
4.6
5.6
6.6
VP-P
2.0
2.5
3.0
2.7
3.0
3.4
1.1
1.7
2.3
V
0.1
0.5
0.9
6.0
9.0
- 4.0
- 1.0
dB
6.0
9.0
- 4.0
- 1.0
Item
Symbol
Conditions
Min.
Typ.
Max.
Unit


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