STMICROELECTRONICS TEA2130

TEA2130
TV AND SATELLITE DECODER SCANNING PROCESSOR
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..
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..
.
..
..
AUTOMATIC TIME CONSTANT SWITCHING
FOR VCR
DIGITAL VIDEO IDENTIFICATION CIRCUIT
500kHz RESONATOR OSCILLATOR
NO LINE AND FRAME OSCILLATOR ADJUSTMENT
DUAL PLL FOR LINE DEFLECTION
SUPER SANDCASTLE OUTPUT
AUTOMATIC 50Hz/60Hz STANDARD IDENTIFICATION
EXCELLENT INTERLACING CONTROL
FRAME SAFETY INPUT
FRAME SAWTOOTH GENERATOR
FULLY ESD AND LATCH-UP PROTECTED
DIP20
(Plastic Package)
ORDER CODE : TEA2130
DESCRIPTION
The TEA2130 is a complete (horizontal and vertical) deflection processor, for TV applications and
all applications which require a flexible, high performance scanning processor (Satellite Decoder,
Video Multimedia).
REFERENCE VOLTAGE
1
20
NOISE MEASUREMENT OUTPUT
VCR DETECTOR OUTPUT
2
19
VIDEO INPUT
Φ1 FILTER
3
18
50% CAPACITOR
GROUND
4
17
VCO INPUT
V CC
5
16
FRAME SAW-TOOTH GENERATOR
FRAME SAFETY INPUT
6
15
FRAME SAW-TOOTH OUTPUT
IDENTIFICATION OUTPUT
7
14
Φ2 FILTER
LINE SAW-TOOTH
8
13
LINE FLYBACK INPUT
CURRENT REFERENCE
9
12
SUPER SANDCASTLE OUTPUT
10
11
LINE OUTPUT
LINE MONOSTABLE CAPACITOR
September 1993
2130-01.EPS
PIN CONNECTIONS
1/8
TEA2130
BLOCK DIAGRAM
18
19
17
16
LINE SYNCHRO
VCO
FRAME
SEPARATOR
500kHz
SEPARATOR
15
FRAME SAWTOOTH
GENERATOR
Ident 60Hz
LS
RAZ
2µs
20
NOISE
14
Mute
Φ2
MEASURMENT
VREF
1
2
500kHz
Φ1
VCC /2
AUTO VCR
FRAME
SWITCH
LOGIC
ϕ2
ϕ1
2µs
DIGITAL MUT
12
Inhibition
Burst
3
13
SUPER SAND
CASTLE GENERATOR
Burst
Mute
LINE LOGIC
PHASE CONTROL
LINE
LINE
LINE OUTPUT
MONOST
OUTPUT
11
Mute
10
1.3V
VOLTAGE
REFERENCE
50/60Hz
1.3V
9
Mute
5
VC C
50/60Hz &
DETECTION
MUT OUTPUT
6
7
GENERAL DESCRIPTION
Introduction
This integrated circuit uses high density I2L bipolar
technology and combines analog signal processing with digital processing.
Timing signals are obtained from a voltage-controlled oscillator (VCO) operating at 500kHz by means
of a cheap ceramic resonator. This avoid the frequency 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
power amplifier with flyback generator
- Line and frame synchronization separation
- Dual phase-locked loop horizontal scanning
- High performance frame and line synchronization
with interlacing control.
2/8
RAZ LINE SAWTOOTH
GENERATOR
8
- Supersandcastle generator with reduced burst
gate pulse for 60Hz
- Automatic 50Hz / 60Hz standard identification
- Frame saw-tooth generator
- Digital video identification circuit
- Very steady free running mode of the line and
frame oscillator when no video is detected. This
allows on screen display without phase Jitter in
research mode of the tuner
- Automatic VCR mode recognition for time constant switching
- 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.
2130-02.EPS
4
GND
FRAME SECURITY
TEA2130
Frame Synchronization
Frame synchronization is fully integrated (no external capacitor required).
The frame timing identification logic permits automatic adaptation to 50-60Hz standards or non-interlaced video.
An automatic synchronization window width system provides:
- Fast frame capture (7.3ms wide window)
- Good noise immunity (0.4ms narrow window)
The internal generator starts the discharge of the
sawtooth generator capacitor, so that it is not disturbed by line flyback effects.
Thanks to the logic control, the beginning of the
charge phase does not depend on any disturbing
effect of the line flyback. A 32µs timing is automatically applied on standardized transmissions for
perfect interlacing.
In VCR mode, the discharge time is controlled by
an internal monostable independent of the line
frequency and gives a direct frame synchronization.
Horizontal Scanning
The horizontal scanning frequency is obtained from
the 500kHz VCO.
The circuit uses two PLL:
- The first one controls the frequency
- The second one controls the relative phase of the
output line pulse and the line flyback signals.
The output pulse has a constant duration of 29µs,
independent of VCC and of any delay in switchingoff the scanning transistor.
Supersandcastle Generator
This output delivers a 3 level synchronization signal:
- Burst level
- Line blanking level
- Frame blanking level
In the event of vertical scanning failure, the frame
blanking level goes high to protect the tube.
Frame Scanning
The current to charge the frame sawtooth generator is automatically switched to 60Hz operation to
maintain constant amplitude.
Automatic VCR Mode Recognition for Time
Constant Switching
- A third phase comparator is used to detect VCR
signals and to switch the φ1 short time constant.
- A noise level measurement is realized on the
video synchronization pulse to inhibit the short
time constant if the noise level is superior to an
adjustable threshold.
- VCR signals are detected if peak to peak signal
on pin 2 is superior to an internal threshold.
This threshold is depending on the noise level. So
with a no noisy video signal, the auto VCR switch
sensitivity is maximum, and it decreases when the
noise increases.
- The sensitivity of the noise gate and the auto VCR
switch is adjustable by external resistance.
- Long and short time constants can be selected
manually by Pin 20.
Digital Video Identification
A digital circuit controls the identification signal.
When identification signal is low, the line oscillator
is set on a reference frequency. When identification
signal is high, φ1 is locked and the catching phase
can start. So that, the TEA2130 allowed on screen
displays in a steady way even without video signal
(during tuner research for example).
Identification Output
The identification function provides three different
levels :
- 0V : No video identification
- 6V : 60Hz video identification
- 12V : 50Hz video identification
This information may be used for timing research
in the case of frequency or voltage synthetizer type
receivers and for audio muting.
Parameter
Supply Voltage
Pulse/Frame Sawtooth Generator Voltage
Output Current
Input Current
Operating Ambient Temperature
Value
13.5
VCC - 3
40
± 5
0 , + 70
Unit
V
V
mA
mA
o
C
2130-01.TBL
Symbol
VCC
V16
I11
I13
TAMB
Unit
C/W
2130-02.TBL
ABSOLUTE MAXIMUM RATINGS
THERMAL DATA
Symbol
Rth(j-a)
Parameter
Junction-ambient Thermal Resistance
Value
80
o
3/8
TEA2130
ELECTRICAL CHARACTERISTICS (Tamb = 25oC; VCC = 12V; Pulse duration 50% of the amplitude)
Symbol
Parameter
Test conditions
Min.
Supply Voltage
Typ.
Max.
Unit
29
40
mA
7
7.5
V
12
Supply Current
Without load in pins 7-12-15
VCC Starting Voltage for Line Output
VCC rising
Switch-off Voltage for Line Output
VCC decreasing
20
V
6.5
V
VIDEO INPUT (Pin 19)
Video Signal Amplitude
Z source < 220Ω
0.2
1
3
VPP
Push out Current
During the synch. pulse
- 40
- 32
- 24
µA
Pull in Current
During the line
3
5
7
µA
- 960
- 350
- 40
µA
15
23
32
µA
50% SYNCH. PULSE CLAMP (Pin 18)
Push out Current
During the synch. pulse
Pull in Current
During the line
φ 1 AND φ 3 COMPARATOR (Pin 2- Pin 3)
Short Time Output Current
Identification high
± 1.1
± 1.5
±2
mA
Long Time Output Current
Identification high
± 0.30
± 0.48
± 0.65
mA
Catching Range
Ceramic CSB 503B
RSERIAL = 470Ω
15.40
15.92
kHz
Transfer Characteristic
∆F pin 11/∆V pin 3
Free Running Frequency
Without video signal
VCO (Pin 17)
2
15.6
kHz/V
15.9
16.2
kHz
0
500
mV
6.5
VIDEO IDENTIFICATION AND STANDARD OUTPUT (Pin 7)
No video on Pin 19
RLOAD/GND = 5kΩ
60Hz video
5.5
6
50Hz video
10.5
11.3
V
V
REFERENCE VOLTAGE (Pin 1)
Output voltage
I1 = 0
5.5
6
6.5
Output impedance
∆I1 = ± 50µA
400
600
800
Ω
200
µA
± 0.4
V
Max output current
V
AUTO VCR SWITCH (Pin 2)
V Switching threshold /V1 Short
time ct2 on ϕ1 PM Active above
Threshold
●
With no noise on the video
(V20 < 6V)
●
With noise on video
(6V < V20 < 7.3V
± 0.2
± 0.3
0.69 x V20 - 3.85
V
NOISE GATE (Pin 20)
4/8
On the synch. pulse bottom
Max. push out current
Vnoise = 0.4VPP, F = 1MHz on
2VPP Video Signal
VCR mode inhibition threshold
(long time cte)
Active above threshold
Voltage hysteresis
Measure bandwidth (-3dB)
High cut frequency
Low cut frequency
Short time constant manual
switching threshold
Active under threshold
1
2
3
6.9
7.3
100
7.5
2
0.7
4.5
5
µs
µA
350
V
mV
MHz
MHz
5.5
V
2130-03.TBL
Measure sampling time
TEA2130
ELECTRICAL CHARACTERISTICS (continued)
(Tamb = 25oC; VCC = 12V; Pulse duration 50% of the amplitude)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
± 300
± 500
± 700
µA
2.2
2.7
3.2
µs
φ 2 COMPARATOR (Pin 14)
Output current
During line flyback
Delay between φ 2 falling edge
and the middle video sync. pulse
FVCO = 500 kHz
LINE MONOSTABLE (Pin 10)
Charge current
Line output high
- 67
µA
Discharge current
Line output low
170
µA
Flip-Flop threshold
Falling edge on the line output
1.3
V
LINE OUTPUT (Pin 11)
Low level
I11= 20 mA
Pulse duration
R9 = 3.32kΩ , C10 = 1.5nF
27
29.5
1
V
32
µs
φ 2 adjustment range
Controlled by V14 compared with
video signal
15
18
- 200
- 180
3.5
7
mA
6.5
µs
µs
LINE SAW-TOOTH (Pin 8)
Charge Current
R9 = 3.32 kΩ
Discharge Current
Discharge Duration
Controlled by logic VCO 500kHz
- 150
µA
LINE FLYBACK INPUT (Pin 13)
Blanking Line Threshold
Active above threshold
0.35
0.4
0.6
V
φ 2 Loop Threshold and Line
Output Inhibition (Pin 11)
Active above threshold
2.7
3
3.3
V
Input Current
-
0.4V < V13 < 0.4V
0.4V < V13 < 3V
3V < V13
- 20
- 10
-10
-5
-4
-4
-1
µA
µA
µA
SUPER SANDCASTLE GENERATOR (Pin 12)
RL = 2.2 kΩ to ground
9
V
Line Blanking Level
4
4.5
5
Frame Blanking Level
2
2.5
3
V
2.45
2.8
3.15
µs
4.1
3.6
4.4
3.9
4.7
4.2
µs
µs
t1
Burst Pulse Duration
●
●
50Hz
60Hz
Line Blanking Duration
Fixed by flyback
Signal pin 13
Frame Blanking Duration
Fixed by the logic
2130-03.EPS
Delay between the midde of the
video sync. pulse and the rising
edge of the burst (t1)
V
21
Line
5/8
2130-04.TBL
Burst Level
TEA2130
ELECTRICAL CHARACTERISTICS (continued)
Tamb = 25oC; VCC = 12V; Pulse duration 50% of the amplitude
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Low DC Voltage
1.1
1.3
1.45
V
Discharge Current
15
60
mA
-6
µA
FRAME SAW-TOOTH GENERATOR
60Hz Internal Current
- 10
-8
FRAME LOGIC SYNCH.
Free Running Period
Without video signal
315
Line
Synchronization Windows
Identification low
Identification 60Hz high
VCR mode
247
247
247
V9 Voltage
R9 = 3.32 kΩ (1%)
1.2
Max. Temperature Shift
∆T = 80oC
±1
%
Actived without negative pulse
during frame blanking time for
permanent frame blanking on SSC
output Pin 12
1.3
V
361
277
361
Line
Line
Line
CURRENT REFERENCE (Pin 9)
1.3
1.4
V
Switching Threshold
Output current
6/8
- 35
- 50
- 67
µA
2130-05.TBL
FRAME SAFETY INPUT (Pin 6)
TEA2130
TYPICAL TV APPLICATION
+200V DC
VERTICAL OUT
C5B503B
4.7MΩ
470Ω
Line Flyback
10 VPP
HORIZONTAL FLYBACK INPUT
J1
BNC
SSC OUT
2.2Ω
220nF
100nF
2.2kΩ
VIDEO
INPUT
10kΩ
HORIZONTAL OUT
220nF
47nF
75Ω
1nF
20
19
18
17
16
2.2kΩ
15
14
13
12
22nF
11
22kΩ
1kΩ
HORIZONTAL
POSITION
470kΩ
TEA2130
V CC
MUTE & 50/60Hz OUT
1
470kΩ
4.7nF
2
3
4
5
7
8
9
10
100nF
100kΩ
10µF
6
4.7nF
2.2µF
3.32kΩ
1%
100kΩ
1000µF
2.7kΩ
10kΩ
3.3nF
1.5nF
1nF
33nF
VERTICAL FEEDBACK
2130-04.EPS
3.9kΩ
V CC
+12V
TYPICAL SYNC SEPARATOR APPLICATION
C5B503B
+5V
470Ω
VERTICAL OUT
2.7kΩ
J1
VIDEO
LINE SYNC OUTPUT
100nF
BNC
10kΩ
3.3nF
INPUT
75Ω
220nF
2.2kΩ
VCC
20
19
18
17
16
15
14
13
12
NC
11
7
8
9
10
TEA2130
MUTE & 50/60Hz OUT
1
2
3
4
5
6
NC
100kΩ
10µF
4.7nF
100nF
3.32kΩ
4.7nF
2.2µF
1000 µ F
10kΩ
1%
2.7kΩ
33nF
3.9kΩ
2130-05.EPS
470kΩ
VCC
+12V
7/8
TEA2130
I
b1
L
a1
PACKAGE MECHANICAL DATA
20 pins - PLASTIC DIP
B
b
Z
e
E
Z
e3
D
11
1
10
a1
B
b
b1
D
E
e
e3
F
i
L
Z
Min.
0.254
1.39
Millimeters
Typ.
Max.
1.65
Min.
0.010
0.055
0.45
0.25
Inches
Typ.
Max.
0.065
0.018
0.010
25.4
8.5
2.54
22.86
1.000
0.335
0.100
0.900
7.1
3.93
3.3
0.280
0.155
0.130
1.34
0.053
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 notice. 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.
© 1994 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
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8/8
DIP20.TBL
Dimensions
PM-DIP20.EPS
F
20