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PDF U2203B Data sheet ( Hoja de datos )
| Número de pieza | U2203B | |
| Descripción | RGB Video Amplifier System for Monitors | |
| Fabricantes | TEMIC Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de U2203B (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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RGB Video Amplifier System for Monitors
U2203B
Description
The U2203B-A is a wideband video amplifier IC system
especially designed for use in high-resolution RGB moni-
tors. The IC includes three well matched video
amplifiers, three gated differential amplifiers for black-
level clamping and brightness control and the function for
simultaneously contrast control. Separate adjustment of
the maximum gain of each channel is also possible.
Features
D 3 channels, high bandwidth (90 MHz @ –3 dB)
D Matched attenuators for contrast control
D Black-level clamping for brightness control
D Independent gain control of each amplifier
D ESD protection according to MIL-STD. 883
Vs1 1
CONTRAST CAP 2
CONTRAST CAP 3
R VIDEO IN 4
SUPPLY
REG.
RED
1k
40
90
28 Vs1
27 R DRIVE
26 R CLAMP (–)
25 R VIDEO OUT
R CLAMP CAP 5
G VIDEO IN 6
GROUND 7
G CLAMP CAP 8
GREEN
1k
90
40
24 R CLAMP (+)
23 Vs2
22 G DRIVE
21 G CLAMP (–)
B VIDEO IN 9
B CLAMP CAP 10
Vin REF 11
CONTRAST 12
2.4V
REF
CONTRAST
CONTROL
Vs1 13
CLAMP GATE 14
1.4V
REF
BLUE
1k
90
40
20 G VIDEO OUT
19 G CLAMP (+)
18 B DRIVE
17 B CLAMP (–)
U2203B
16 B VIDEO OUT
15 B CLAMP (+)
95 10749
Figure 1. Block diagram
TELEFUNKEN Semiconductors
Rev. A2, 27-Jan-97
1 (7)
1 page  
AC Characteristics
U2203B
20
18
16
14
12
10
8
6
4
2
0
1
95 10748
C = 0 pF
C = 10 pF
C = 27 pF
C = 47 pF
10
Frequency ( MHz )
100
1000
Figure 4. Gain vs. frequency (various peaking), V12 = 12 V (contrast), V15 = V19 = V24 = 4 V (brightness)
10
0
–10
–20
–30
–40
–50
–60
1
95 10747
10
Frequency ( MHz )
100
1000
Figure 5. Relative gain vs. frequency (no peaking), V12 = variable (contrast), V15 = V19 = V24 = 4 V (brightness),
0 dBrel = 17.7 dB, C = 0 pF
TELEFUNKEN Semiconductors
Rev. A2, 27-Jan-97
5 (7)
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet U2203B.PDF ] | |
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