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PDF TDA9205 Data sheet ( Hoja de datos )
| Número de pieza | TDA9205 | |
| Descripción | DC CONTROLLED 130MHz RGB PREAMPLIFIER | |
| Fabricantes | ST Microelectronics | |
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TDA9205
DC CONTROLLED 130MHz RGB PREAMPLIFIER
. 130MHz TYPICAL BANDWIDTH AT 1VPP
. 2.8ns TYP. RISE/FALL TIME
(3VPP/12pF LOAD)
. DC ADJUSTMENT : CONT, BRT, RGB DRIVE,
RGB CUT-OFF
. COMP. VIDEO INPUT AND POSITIVE OR
NEGATIVE SYNC INPUT
. INTERNAL BACKPORCH CLAMPING PULSE
GENERATOR WITH 3 SELECTABLE WIDTH
. BLANKING STAGE
. INTERNAL PULSE GENERATOR FOR CUT-
OFF LOOP GATING (INSIDE BLANKING)
. POSSIBILITY OF AC OR DC COUPLING TO
HIGH VOLTAGE AMPLIFIER
. VOLTAGE REFERENCE GENERATOR
. POWERFULL OUTPUT DRIVE CAPABILITY
. BICMOS PROCESS
SHRINK42
(Plastic Package)
ORDER CODE : TDA9205
PIN CONNECTIONS
DESCRIPTION
The TDA9205 is a DC controlled wideband video
amplifier intended for use in high resolution color
monitor. DC (0 to 5V) contrast and brightness
commands apply to the 3 channels. White balance
adjustment is performed using 3 separated drive
inputs. 3 feed-back inputs give a flexible DC level
shift of the output signals. Cut-off adjustments can
be easily performed with these 3 inputs.
Separated ground and supply for each channel and
large swing output voltage (0.5 to 8V) make the
TDA9205 suitable for AC or DC drive of discrete,
hybrid or monolitic high voltage CRT amplifier.
Attractive functions like sync separator, line
blanking, backporch generator, voltage reference
generator, feed-back polarity selection give to the
TDA9205 efficient features for performant and cost
effective application.
CONT
BRT
G BRT CAP
B BRT CAP
R BRT CAP
R DRIVE
R VCC
R GND
R IN
B DRIVE
B VCC
B GND
B IN
G DRIVE
G VCC
G GND
G IN
COMPVIDEO
HSYNC
SYNCOUT
DC VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
March 1996
42 VREF
41 FDBKPOL
40 DC ADJ
39 R CLAMP
38 B CLAMP
37 PVCC R
36 R OUT
35 R FDBK
34 PGND R
33 PVCC B
32 B OUT
31 B FDBK
30 PGND B
29 PVCC G
28 G OUT
27 G FDBK
26 PGND G
25 G CLAMP
24 BP ADJ
23 BLK
22 DC GND
1/11
1 page  
TDA9205
GENERAL DESCRIPTION (continued)
0dB is achieved for 5V on drive adjustment and
-6dB for 0V. Typical curves are given in Figures 4
and 5.
Figure 4 : Drive Adjustment versus Frequency
GAIN (dB)
15
0dB
-1dB
-2dB
10
-3dB
-4dB
-5dB
-6dB
5
VIDEO IN = 0.7 VCC
CONTRAST = Max.
VBRIGHTNESS = 2V
VDC LEVEL = 1V
0
10
F (MHz)
100
Figure 5 : Drive Adjustment versus Control Voltage
DAR (dB)
0
-2
-4
-6
VDRIVE (V)
-8
012345
5 - Blanking
The blankingstage switches the outputs to the infra
black level when a positive pulse is applied on the
TTL BLK input (Pin 23).
The infra black level is defined as black level minus
400mV on the video outputs.
Black level is reached with minimal brightness and
black level on video signal inputs.
6 - Output Stage
The output stage allows maximum voltage range
(between 0.5 and 8V).
To allow the TDA9205 to drive either discrete (with
cascade stage) or hybrid or monolitic high voltage
amplifier, the output has been designed to be able
to drive either capacitive or resistive load.
The three outputs are able to sink or source 30mA
maximum current.
As can be seen in the electrical specifications,
3.8ns rise and fall time are possible to achieved
with 3.5VPP on 12pF load. Typical large bandwidth
is given in Figure 6.
Figure 6 : Typical Large Signal Bandwidth
VIDEO OUT (VPP)
4
3
2
1
f (MHz)
0
10 100
7 - Output Clamp
The output clamp centers the output voltages to
the desired DC value. As for the brightness loop,
the output clamp includes a sample and hold sys-
tem (please refer to Figure 2).
The sampling is made by an internal pulse.
This pulse (CLPP) is located inside the blanking
pulse.
Each blanking pulse will trigger a 1µs internal
monostable (see Figure 7).
Figure 7
BLANKING
PIN 23
CLPP
1µs
During CLPP, the DC voltage of Pin 40 will be
compared to the Red, Green or Blue feed-back
signals on Pins 35, 27 or 31.
In order to allow DC or AC coupling between high
voltage amplifier and cathode, the polarity of this
feed-back signal can be either positive or negative.
The desired polarity is selectable by Pin 41.
If Pin 41 is at high level, the feed-back signals
(Pins 27-31-35) must have positive polarity (See
Figure 8a).
5/11
5 Page 
PACKAGE MECHANICAL DATA
42 PINS - PLASTIC SHRINK DIP
TDA9205
E
E1
B B1 e
e1
e2
D
c
E
42 22
.015
0,38
Gage Plane
1 21 e3
e2
SDIP42
Dimensions
A
A1
A2
B
B1
c
D
E
E1
e
e1
e2
e3
L
Min.
0.51
3.05
0.36
0.76
0.23
37.85
15.24
12.70
2.54
Millimeters
Typ.
3.81
0.46
1.02
0.25
38.10
13.72
1.778
15.24
3.30
Max.
5.08
4.57
0.56
1.14
0.38
38.35
16.00
14.48
18.54
1.52
3.56
Min.
0.020
0.120
0.0142
0.030
0.0090
1.490
0.60
0.50
0.10
Inches
Typ.
0.150
0.0181
0.040
0.0098
1.5
0.540
0.070
0.60
0.130
Max.
0.200
0.180
0.0220
0.045
0.0150
1.510
0.629
0.570
0.730
0.060
0.140
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result
from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics.
Specifications mentioned in this publication are subject to change without noti ce. This publication supersedes and replaces all
information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life
support devices or systems without express written approval of SGS-THOMSON Microelectronics.
© 1996 SGS-THOMSON Microelectronics - All Rights Reserved
Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips
I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to
the I2C Standard Specifications as defined by Philips.
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco
The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
11/11
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| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet TDA9205.PDF ] | |
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