Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

LA75521VA Datasheet(PDF) 8 Page - Sanyo Semicon Device

Part No. LA75521VA
Description  IF Signal Processing (VIFSIF) IC that Supports the PAL Video Standard for TV Sets and VCRs
Download  13 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  SANYO [Sanyo Semicon Device]
Homepage  https://www.sanyo-av.com/us/
Logo 

LA75521VA Datasheet(HTML) 8 Page - Sanyo Semicon Device

Zoom Inzoom in Zoom Outzoom out
 8 / 13 page
background image
LA75521VA
No.A1004-8/13
Pin Functions
Pin
No.
Pin name
Function
Equivalent Circuit
1
DE-EMPHASIS C
De-emphasis capacitor connection pin
This is used to switch the equivalent resistance
(5k
Ω or 7.5kΩ) internally in the IC to select the
time constant.
This switching is linked to the SIF input switch.
To disable de-emphasis, disconnect the capacitor.
Connection of an external capacitance of 0.01
μF
enables switching between 50 and 75
μs.
When the FM detector circuit is not to be used, the
FM VCO can be stopped by connecting it to
ground with a resistor of 1k
Ω or less.
2
SIF AGC FILTER
AGC filter pin for SIF carrier
0.01
μF is recommended for C1.
3
FM PLL FILTER
PLL filter pin of FM detector
This is used to configure an external lag lead filter.
Example: Connect 330pF in parallel with the filter
(0.033
μF + 3.3kΩ).
4
VCC
Power supply
5
6
EQ OUT
EQ FILTER
Equalizer circuit. This circuit is used to correct the
video signal frequency characteristics.
Notes on equalizer amplifier design
• The equalizer amplifier is designed as a voltage
follower amplifier with a gain of about 0 dB. When
used for frequency characteristics correction, a
capacitor, inductor, and resistor must be
connected in series between pin 6 and ground.
Equalizer amplifier gain AV =
R1
Z + 1
R1 is the IC internal resistance, and is 1k
Ω. In the
application design, simply select Z to correspond
to the desired characteristics. However, since the
EQ amplifier gain will be maximum at the
resonant point defined by Z, care is required to
assure that distortion does not occur.
Continued on next page.
1
4k
Ω
0.01
μF
2
2k
Ω
C1
3
8k
Ω
3
0.033
μF
3.3k
Ω
330pF
6
2k
Ω
R1:1k
Ω
C
L
R
=Z
5


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : 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  |   Vietnamese : Alldatasheet.vn