參數(shù)資料
型號: TDA938X
廠商: NXP Semiconductors N.V.
英文描述: TV signal processor-Teletext decoder with embedded m-Controller
中文描述: 電視信號處理器與嵌入式米圖文電視解碼器控制器
文件頁數(shù): 118/140頁
文件大?。?/td> 570K
代理商: TDA938X
1999 Sep 28
118
Philips Semiconductors
Preliminary Device Specification
TV signal processor-Teletext decoder with
embedded
μ
-Controller
TDA935X/6X/8X series
Control part
S
ATURATION CONTROL
;
NOTE
30
C.1.1
saturation control range
63 steps; see Fig.46
52
dB
C
ONTRAST CONTROL
;
NOTE
30
C.2.1
C.2.2
contrast control range
tracking between the three
channels over a control range of
10 dB
contrast reduction
63 steps; see Fig.47
20
0.5
dB
dB
C.2.6
6
dB
B
RIGHTNESS CONTROL
C.3.1
brightness control range
63 steps; see Fig.48
±
0.7
V
RGB
AMPLIFIERS
C.4.1
output signal amplitude
(peak-to-peak value)
at nominal luminance input
signal, nominal contrast and
white-point adjustment;
note 49
tbf
2.0
tbf
V
C.4.2
maximum signal amplitude
(black-to-white)
input signal amplitude
(CVBS/Y-input, pins 38 or 41) at
which the soft clipping is
activated
output signal amplitude for the
‘red’ channel (peak-to-peak
value)
tbf
V
C.4.3
note 49
tbf
V
C.4.4
at nominal settings for
contrast and saturation
control and no luminance
signal to the input (R
Y, PAL)
tbf
2.1
tbf
V
C.4.5
C.4.6
nominal black level voltage
black level voltage
2.5
2.5
V
V
when black level stabilisation
is switched-off (via AKB bit)
C.4.61
C.4.7
black level voltage control range VSD bit active; note 50
width of video blanking with HBL
bit active
control range of the
black-current stabilisation
blanking level
level during leakage
measurement
level during ‘low’ measuring
pulse
level during ‘high’ measuring
pulse
adjustment range of the ratio
between the amplitudes of the
RGB drive voltage and the
measuring pulses
1.8
15.3
2.5
15.6
3.2
15.9
V
μ
s
note 51
C.4.8
±
1
V
C.4.9
C.4.10
difference with black level,
note 49
0.5
0.1
V
V
C.4.11
0.25
V
C.4.12
0.38
V
C.4.13
note 49
±
3
dB
NUMBER
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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