TEA2130 ST Microelectronics, Inc., TEA2130 Datasheet - Page 2

• Manufacturer Part Number: TEA2130
• Description: H/v Deflection With Automatic VCR Switching
• Manufacturer: ST Microelectronics, Inc.

TEA2130
BLOCK DIAGRAM
2/8
GENERAL DESCRIPTION
Introduction
This integrated circuit uses high density I2L bipolar
technology and combines analog signal process-
ing with digital processing.
Timing signals are obtained from a voltage-control-
led oscillator (VCO) operating at 500kHz by means
of a cheap ceramic resonator. This avoid the fre-
quency adjustment normally required with line and
frame oscillators.
A chain of dividers and appropriate logic circuitry
produces very accurate defined sampling pulses
and the necessary timing signals.
Internal Functions
- Horizontal scanning processor
- Frame scanning processor
- B class frame output stage using an external
- Line and frame synchronization separation
- Dual phase-locked loop horizontal scanning
- High performance frame and line synchronization
power amplifier with flyback generator
with interlacing control.
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20
1
2
3
V
CC
MEASURMENT
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AUTO VCR
SWITCH
NOISE
DIGITAL MUT
2 s
LINE SYNCHRO
SEPARATOR
Mute
GND
18
4
1
LS
2 s
500kHz
V
REF
1
Burst
500kHz
LINE LOGIC
VCO
Mute
17
V
5
C C
2
FRAME
SEPARATOR
LOGIC
Mute
FRAME
FRAME SECURITY
DETECTION
50/60Hz
6
- Supersandcastle generator with reduced burst
- Automatic 50Hz / 60Hz standard identification
- Frame saw-tooth generator
- Digital video identification circuit
- Very steady free running mode of the line and
- Automatic VCR mode recognition for time con-
- Frame safety input
WORKING DESCRIPTION
Synchronization Separator
Line synchronization separator is clamped to black
level of input video signal with synchronization
pulse bottom level measurement.
The synchronization pulses are divided centrally
between the black level and the synchronization
pulse bottom level, to improve performance on
video signal in noise conditions.
gate pulse for 60Hz
frame oscillator when no video is detected. This
allows on screen display without phase Jitter in
research mode of the tuner
stant switching
Ident 60Hz
PHASE CONTROL
LINE OUTPUT
Burst
MUT OUTPUT
50/60Hz &
7
Mute
CASTLE GENERATOR
16
SUPER SAND
1.3V
RAZ
MONOST
LINE
LINE SAWTOOTH
FRAME SAWTOOTH
GENERATOR
REFERENCE
15
VOLTAGE
GENERATOR
2
RAZ
OUTPUT
LINE
Inhibition
1.3V
14
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12
11
10
9
8