ITT DIGIVISION 3888 I HI FI
Tuner HF-MOD.OS.OPT.FS.5,6 MHz RF-IF Module Os. 5829 01 18
ITT DIGIVISION 3888 I HI FI
Tuner HF-MOD.OS.OPT.FS.5,6 MHz RF-IF Module Os. 5829 01 18
Details:
TDA5030A OSC + Mixer
TDA2556 Stereo IF AMP - Demod
TDA4427A VIF VIDEO IF AMPL - Demod
U664B Prescaler
OFW G 3251 SAW Filter.
TDA2556 QUASI-SPLIT-SOUND CIRCUIT WITH DUAL SOUND DEMODULATORS
GENERAL DESCRIPTION
The TDA2556 is a monolithic integrated circuit for quasi-split-sound processing, including two FM
demodulators, for two carrier stereo TV receivers and VTR.
Features
First IF (vision carrier plus sound carrier).
0 3 stage gain controlled IF amplifier
0 AGC circuit
0 Reference amplifier and limiter amplifier for vision carrier (V.C.) processing
0 Linear multiplier for quadrature demodulation
Second IF (two separate channels for both FM sound signals).
0 4-stage-limiting amplifier
0 Ouadrature demodulator
0 AF amplifier with de-emphasis
O Output buffer
0 Muting for one or both AF outputs
TDA 4427 VIDEO IF CIRCUIT
Technology: Bipolar
Features:
o Very high input sensitivity
0 Very low intermodulation
products
0 Minimum differential error
o Constant input impedance
independent of AGC
o Fixed video output, voltage
with small tolerance range
o Negative video signal hardly
affected by supply voltage
variations
o Very few external components
TDA 4427 A: For ceramic sound traps
Extreme fast AGC action - gating
largely independent of pulse shape
and amplitude
Positive as well as neg. video signal
available from low-impedance outputs
Positive or negative going gating pulse
Large AFC output current swing
(push-pull output)
Switchable AFC
Connecting and basic circuitry compa-
tible to the TELEFUNKEN electronic
video IF type programme - permits
building block system for video IF
module
No comments:
Post a Comment
The most important thing to remember about the Comment Rules is this:
The determination of whether any comment is in compliance is at the sole discretion of this blog’s owner.
Comments on this blog may be blocked or deleted at any time.
Fair people are getting fair reply. Spam and useless crap and filthy comments / scrapers / observations goes all directly to My Private HELL without even appearing in public !!!
The fact that a comment is permitted in no way constitutes an endorsement of any view expressed, fact alleged, or link provided in that comment by the administrator of this site.
This means that there may be a delay between the submission and the eventual appearance of your comment.
Requiring blog comments to obey well-defined rules does not infringe on the free speech of commenters.
Resisting the tide of post-modernity may be difficult, but I will attempt it anyway.
Your choice.........Live or DIE.
That indeed is where your liberty lies.
Note: Only a member of this blog may post a comment.