Electronic Components Datasheet Search
Selected language     English  ▼


TDA4884 Datasheet(PDF) 5 Page - NXP Semiconductors

Part No. TDA4884
Description  Advanced monitor video controller for OSD
Download  28 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo 

 
 5 page
background image
1997 Nov 26
5
Philips Semiconductors
Product specification
Three gain control video pre-amplifier for OSD
TDA4884
6
PINNING
SYMBOL
PIN
DESCRIPTION
GC2
1
gain control channel 2
VIN1
2
signal input channel 1
GC1
3
gain control channel 1
GND
4
ground
VIN2
5
signal input channel 2
CC
6
contrast control, OSD switch
VP
7
supply voltage
VIN3
8
signal input channel 3
HBL
9
horizontal blanking, switch-off
CL
10
input clamping, vertical blanking,
test mode
GC3
11
gain control channel 3
FB3
12
feedback channel 3
VOUT3
13
voltage output channel 3
IOUT3
14
current output channel 3
FB2
15
feedback channel 2
VOUT2
16
voltage output channel 2
IOUT2
17
current output channel 2
FB1
18
feedback channel 1
VOUT1
19
voltage output channel 1
IOUT1
20
current output channel 1
Fig.2 Pin configuration.
handbook, halfpage
GC2
GND
CC
HBL
CL
VOUT1
IOUT1
FB1
VOUT2
IOUT2
FB2
VOUT3
VIN1
VIN2
VIN3
VP
IOUT3
FB3
GC3
GC1
1
2
3
4
5
6
7
8
9
10
11
12
20
19
18
17
16
15
14
13
TDA4884
MHA918
7
FUNCTIONAL DESCRIPTION
The RGB input signals 0.7 V (p-p) are capacitively coupled
into the TDA4884 (pins 2, 5 and 8) from a low ohmic
source and are clamped to an internal DC voltage (artificial
black level). Composite signals will not disturb normal
operations because an internal clipping circuit cuts all
signal parts below black level. All channels have a
maximum total voltage gain of 7 dB (maximum contrast
and maximum individual channel gain). With the nominal
channel gain of 1 dB and nominal contrast setting the
nominal black-to-white output amplitude is 0.79 V (p-p).
DC voltages are used for contrast and gain control.
7.1
Contrast control
Contrast control is achieved by a voltage at pin 6 and
affects the three channels simultaneously. To provide the
correct white point, an individual gain control (pins 3, 1 and
11) adjusts the signals of channels 1, 2 and 3.
7.2
Output stages
Each output stage provides a current output (pins 20, 17
and 14) and a voltage output (pins 19, 16 and 13). External
cascode transistors reduce power consumption of the IC
and prevent breakdown of the output transistors. Signal
output currents and peaking characteristics are
determined by external components at the voltage outputs
and the video supply. The channels have separate internal
feedback loops which ensure large signal linearity and
marginal signal distortion irrespective of output transistor
thermal VBE variation.
7.3
Input clamping
The clamping pulse (pin 10) is used for input clamping
only. The input signals have to be at black level during the
clamping pulse and are clamped to an internal artificial
black level. The coupling capacitors are used in this way
for black-level storage. Because the threshold for the
clamping pulse is higher than that for vertical blanking
(pin 10) the rise and fall times of the clamping pulse need




Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
TDA4882Advanced monitor video controller for OSD 1 2 3 4 5 MoreNXP Semiconductors
NTE7138Integrated Circuit Advanced Monitor Video Controller for OSD 1 2 3 4 5 MoreNTE Electronics
M52780-XXXSPI2C BUS CONTROLLED 3CH VIDEO PRE-AMP WITH OSD CONTROLLER FOR HIGH RESOLUTION COLOR DISPLAY MONITOR 1 2 3 4 5 MoreMitsubishi Electric Semiconductor
TDA4881Advanced monitor video controller 1 2 3 4 5 MoreNXP Semiconductors
NTE7137Integrated Circuit Advanced Monitor Video Controller 1 2 3 4 5 NTE Electronics
STV9432TA100MHz OSD FOR MONITOR INCLUDING BEAM CURRENTS & VIDEO TIMING ANALYZER 1 2 3 4 5 MoreSTMicroelectronics
STV9432TAP100MHz OSD FOR MONITOR INCLUDING BEAM CURRENTS VIDEO TIMING ANALYZER AND PWMs 1 2 3 4 5 MoreSTMicroelectronics
SC1154PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS 1 2 3 4 5 MoreSemtech Corporation
M52749FPBUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR 1 2 3 4 5 MoreMitsubishi Electric Semiconductor
DBL2056R.G.B VIDEO PROCESSOR FOR MONITOR 1 2 3 4 5 Daewoo Semiconductor

Link URL

Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com 2003 - 2017    


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl