參數(shù)資料
型號(hào): TDA4884
廠商: NXP SEMICONDUCTORS
元件分類: 音頻/視頻放大
英文描述: Advanced monitor video controller for OSD
中文描述: 3 CHANNEL, VIDEO PREAMPLIFIER, PDIP20
封裝: 0.300 INCH, PLASTIC, SOT-146-1, DIP-20
文件頁(yè)數(shù): 4/28頁(yè)
文件大小: 189K
代理商: TDA4884
1997 Nov 26
4
Philips Semiconductors
Product specification
Three gain control video pre-amplifier for OSD
TDA4884
5
BLOCK DIAGRAM
Fig.1 Block diagram and basic application circuit for DC and AC coupling.
handbook, full pagewidth
10 k
10 k
10 M
75
33
33
220
VOLTAGE
CONVERTER
VOLTAGE
CONVERTER
CHANNEL 1
6.2 V
CLAMP
CLIPPING
gain
control
VP
VP
VP = 8 V
1
2
22 nF
20
19
3
4
10 k
10 M
75
33
33
10
10
10
100
10
220
VOLTAGE
CONVERTER
CHANNEL 2
CLAMP
CLIPPING
REF
GAIN
VP
5
17
16
15
18
6
7
22 nF
22 nF
10 M
75
18
10 k
18
VOLTAGE
CONVERTER
CHANNEL 3
test mode
ultra black
blanking
horizontal blanking
switch off
signal
input
signal
input
signal
input
clamping pulse
vertical blanking
test mode
output clamping
input
clamping
CLAMP
CLIPPING
PULSE
DECODER
8
+
14
13
12
5.8 V
11
9
voltage
output
voltage
output
voltage
output
current
output
current
output
current
output
feedback
feedback
feedback
gain
control
gain
control
10
VP
VP
contrast
control
10 k
15 k
1.5 k
1.5 k
6.8 k
68 k
1 k
1 k
93
k
10 k
8 V
10 k
cut-off
control
15 k
6.8 k
68 k
8 V
25 MHz
60 MHz
40 MHz
BAV21
VCRT = 75 V
860
VCRT = 65 V
VCRT2 = 65 V
VCRT = 75 V
BFQ236
47 nF
BFQ236
BFQ235
BFQ256
BAV21
cut-off
BAV21
cut-off
control
CRT
BFQ256
BFQ235
BFQ235
10 k
TDA4884
MHA917
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