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參數(shù)資料
| 型號： | LM1229VEC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | I2C Compatible CMOS TV RGB and Deflection Processor |
| 中文描述： | WAVEFORM GENERATION, PQFP64 |
| 封裝： | PLASTIC, QFP-64 |
| 文件頁數(shù)： | 4/27頁 |
| 文件大?。?/td> | 969K |
| 代理商： | LM1229VEC |
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Video Signal Electrical Characteristics
(Continued)
Unless otherwise noted: T
= 25C, V
= +5.0V, V
= 0.70 V
P-P
, V
ABL
= V
CC
, C
L
= 10 pF, Video Outputs = 2.4 V
P-P
. See
(Note 7) for Min and Max parameters and (Note 6) for Typicals.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
A
V MIN GAIN
/
A
V MAX GAIN
A
V MATCH
Maximum gain attenuation.
Maximum contrast, V
ABL
= 5.0V.
–12
dB
Maximum gain match between
channels.
Gain tracking channel to channel. AC input signal. See (Note 11).
ABL control range upper limit.
ABL control range lower limit.
ABL Gain Reduction at V
ABL
=
2.5V.
ABL input bias current during
ABL.
ABL input current sink capability.
ABL channel to channel gain
tracking error.
Minimum input resistance (pins
45, 46, 47)
Maximum contrast, V
ABL
= 5.0V.
±
0.6
dB
A
V TRACK
V
ABL HIGH
V
ABL LOW
A
V 2.5
/A
V MAX
±
0.6
4.5
2.5
dB
V
V
(Note 12), AC input signal.
(Note 12), AC input signal.
(Note 12), AC input signal.
5.8
dB
I
ABL ACTIVE
(Note 12), AC input signal. V
ABL
=
2.5V
(Note 12), AC input signal.
Input signal = 0.7 V
P-P
, ABL voltage
set to 4.5V and 3.0V.
10
μA
I
ABL MAX
A
V ABL TRACK
1.0
mA
0
7.5
%
R
IP
20
M
OSD Electrical Characteristics
Unless otherwise noted: T
A
= 25C, V
CC
= +5.0V. See (Note 7) for Min and Max parameters and (Note 6) for Typicals.
Symbol
Parameter
DIGITAL MODE
V
LOW
Maximum low input voltage,
(OSD and Enable).
OSD: OSD black displayed
V
HIGH
Minimum high input voltage,
(OSD and Enable).
OSD: OSD colors displayed
V
OSD-11
OSD output amplitude.
OSD Enable = 1, OSD Contrast =
11.
V
OSD-10
OSD output amplitude.
OSD Enable = 1, OSD Contrast =
10.
V
OSD-01
OSD output amplitude.
OSD Enable = 1, OSD Contrast =
01.
V
OSD-00
OSD output amplitude.
OSD Enable = 1, OSD Contrast =
00.
V
OSD-AUX
OSD output amplitude (AUX).
OSD Enable = 1, OSD[5] = 1
V
OSD BLACK
Difference between OSD and video
black levels.
0x60
V
OSD WHITE
Output Match between channels.
OSD Contrast = 11, maximum
difference between R, G and B
V
OSD TRACK
Output Variation between channels. OSD contrast varied from max to
min
HT
MAX
OSD background video maximum
level.
See (Note 18).
HT
MIN
OSD background video minimum
level.
See (Note 18).
ANALOG MODE
A
V ANALOG OSD
Analog gain from pins 41, 42, 43 to
the video outputs, with input level
0.7 V
PP
.
Conditions
Min
Typ
Max
Units
Enable: video inputs selected
1.0
V
Enable: OSD inputs selected
3.0
V
2.65
V
2.35
V
2.15
V
1.75
V
3.0
V
Same channel, contrast and gain =
85
100
mV
3
%
3
%
OSD[3] = 1, OSD TRANS = 0x7F.
100
%
OSD[3] = 1, OSD TRANS = 0x00.
10
%
OSD Enable = 1, Gains at
maximum.
3.75
V/V
L
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