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參數(shù)資料
| 型號： | TDA4886A |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | 140 MHz video controller with I2C-bus |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP24 |
| 封裝： | 0.400 INCH, PLASTIC, SDIP-24 |
| 文件頁數(shù)： | 32/52頁 |
| 文件大?。?/td> | 495K |
| 代理商： | TDA4886A |
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1998 Dec 04
32
Philips Semiconductors
Product specification
140 MHz video controller with I
2
C-bus
TDA4886A
12 TEST AND APPLICATION INFORMATION
Fig.15 Basic applications for different kinds of post amplifiers with DC or AC coupling.
MHB266
handbook, full pagewidth
to cathode
70 V
Application with integated
post amplifier, AC-coupled cathode
and black level restoration cicuit.
Application with integated
post amplifier, DC-coupled cathode
and negative feedback.
24
TDA4886A
I
2
C-BUS
BLACK LEVEL
RESTORATION
1
23
2
22
3
21
4
20
5
19
6
18
7
17
8
16
9
15
10
14
11
13
12
output clamping
blanking
pull-up
resistors
to cathode
subcontrast setting
contrast modulation input
90 V
90 V
Application with discrete
post amplifier, DC-coupled
cathode and negative
feedback.
to cathode
limiting input
input clamping
vertical blanking
OSD
inputs
fast blanking
5 V
8 V
12.1
Test boards
For high frequency measurements a special test
application and printed-circuit board with only a few
external components is built. It utilizes the internal positive
feedback of the output signals during output clamping with
control bit FPOL = 1. Figure 16 shows the test application
circuit and Figs 17 and 18 show the layout and mounting
of the double-sided printed-circuit board. Most
components are of SMD type. Short HF loops and
minimum crosstalk between the channels and between
signal inputs and outputs are achieved by properly shaped
ground areas.
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