TEA2130 [STMICROELECTRONICS]
TV AND SATELLITE DECODER SCANNING PROCESSOR; 电视和卫星解码器扫描处理器
| 型号： | TEA2130 |
| 厂家： | 
ST |
| 描述： | TV AND SATELLITE DECODER SCANNING PROCESSOR |
| 文件： | 总8页 (文件大小：128K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TEA2130
TV AND SATELLITE DECODER SCANNING PROCESSOR
.
AUTOMATIC TIME CONSTANT SWITCHING
FOR VCR
DIGITAL VIDEO IDENTIFICATION CIRCUIT
500kHz RESONATOR OSCILLATOR
NO LINE AND FRAME OSCILLATOR AD-
JUSTMENT
DUAL PLL FOR LINE DEFLECTION
SUPER SANDCASTLE OUTPUT
AUTOMATIC 50Hz/60Hz STANDARD IDENTI-
FICATION
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 verti-
cal) deflection processor, for TV applications and
all applications which require a flexible, high per-
formance scanning processor (Satellite Decoder,
Video Multimedia).
PIN CONNECTIONS
REFERENCE VOLTAGE
VCR DETECTOR OUTPUT
Φ1 FILTER
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NOISE MEASUREMENT OUTPUT
VIDEO INPUT
50% CAPACITOR
GROUND
VCO INPUT
VCC
FRAME SAW-TOOTH GENERATOR
FRAME SAW-TOOTH OUTPUT
FRAME SAFETY INPUT
IDENTIFICATION OUTPUT
LINE SAW-TOOTH
2 FILTER
Φ
LINE FLYBACK INPUT
SUPER SANDCASTLE OUTPUT
LINE OUTPUT
CURRENT REFERENCE
LINE MONOSTABLE CAPACITOR
1/8
September 1993
TEA2130
BLOCK DIAGRAM
18
17
16
15
LINE SYNCHRO
SEPARATOR
FRAME
VCO
FRAME SAWTOOTH
GENERATOR
19
SEPARATOR
500kHz
Ident 60Hz
LS
RAZ
2µs
14
NOISE
MEASURMENT
Mute
20
1
Φ
2
VREF
500kHz
Φ
1
VCC /2
13
12
AUTO VCR
SWITCH
FRAME
LOGIC
SUPER SAND
CASTLE GENERATOR
2
Burst
Inhibition
Burst
3
Mute
ϕ2
ϕ1
11
PHASE CONTROL
LINE OUTPUT
LINE
LINE
OUTPUT
DIGITAL MUT
LINE LOGIC
2µs
MONOST
Mute
10
9
1.3V
1.3V
VOLTAGE
REFERENCE
50/60Hz
Mute
RAZ
FRAME SECURITY
DETECTION
50/60Hz &
LINE SAWTOOTH
GENERATOR
8
MUT OUTPUT
4
GND
5
6
7
VCC
GENERAL DESCRIPTION
Introduction
- 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 con-
stant switching
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.
- Frame safety input
A chain of dividers and appropriate logic circuitry
produces very accurate defined sampling pulses
and the necessary timing signals.
WORKING DESCRIPTION
Synchronization Separator
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.
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.
2/8
TEA2130
Frame Synchronization
Frame Scanning
Frame synchronization is fully integrated (no exter-
nal capacitor required).
The frame timing identification logic permits auto-
matic adaptation to 50-60Hz standards or non-in-
terlaced video.
The current to charge the frame sawtooth gener-
ator is automatically switched to 60Hz operation to
maintain constant amplitude.
Automatic VCR Mode Recognition for Time
Constant Switching
An automatic synchronization window width sys-
tem provides:
- Fast frame capture (7.3ms wide window)
- Good noise immunity (0.4ms narrow window)
- 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.
The internal generator starts the discharge of the
sawtooth generator capacitor, so that it is not dis-
turbed 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 automat-
ically 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 synchroniza-
tion.
- 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.
- Thesensitivity ofthe noise gate andtheautoVCR
switch is adjustable by external resistance.
- Long and short time constants can be selected
manually by Pin 20.
Horizontal Scanning
Digital Video Identification
Thehorizontal scanningfrequencyis obtainedfrom
the 500kHz VCO.
A digital circuit controls the identification signal.
When identification signal is low, the line oscillator
is set on areference 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).
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 switching-
off the scanning transistor.
Identification Output
Supersandcastle Generator
The identification function provides three different
levels :
This output delivers a 3 level synchronization sig-
- 0V : No video identification
- 6V : 60Hz video identification
- 12V : 50Hz video identification
nal:
- Burst level
- Line blanking level
- Frame blanking level
This information may be used for timing research
in the case of frequency or voltage synthetizer type
receivers and for audio muting.
In the event of vertical scanning failure, the frame
blanking level goes high to protect the tube.
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
V16
Parameter
Value
13.5
Unit
V
Supply Voltage
Pulse/Frame Sawtooth Generator Voltage
Output Current
VCC - 3
40
V
I11
mA
mA
oC
I13
Input Current
± 5
TAMB
Operating Ambient Temperature
0 , + 70
THERMAL DATA
Symbol
Parameter
Value
Unit
oC/W
Rth(j-a)
Junction-ambient Thermal Resistance
80
3/8
TEA2130
ELECTRICAL CHARACTERISTICS (Tamb = 25oC; VCC = 12V; Pulse duration 50% of the amplitude)
Symbol
Parameter
Supply Voltage
Supply Current
Test conditions
Min.
Typ.
12
Max.
Unit
V
Without load in pins 7-12-15
20
29
40
mA
V
VCC Starting Voltage for Line Output VCC rising
Switch-off Voltage for Line Output VCC decreasing
VIDEO INPUT (Pin 19)
Video Signal Amplitude
7
7.5
6.5
V
Z source < 220Ω
During the synch. pulse
During the line
0.2
- 40
3
1
- 32
5
3
- 24
7
VPP
µA
Push out Current
Pull in Current
µA
50% SYNCH. PULSE CLAMP (Pin 18)
Push out Current
Pull in Current
During the synch. pulse
During the line
- 960
15
- 350
23
- 40
32
µA
µA
φ 1 AND φ 3 COMPARATOR (Pin 2- Pin 3)
Short Time Output Current
Long Time Output Current
Identification high
Identification high
± 1.1
± 1.5
± 2
mA
mA
± 0.30 ± 0.48 ± 0.65
VCO (Pin 17)
Catching Range
Ceramic CSB 503B
15.40
15.6
15.92
16.2
kHz
RSERIAL = 470Ω
Transfer Characteristic
Free Running Frequency
∆F pin 11/∆V pin 3
2
kHz/V
kHz
Without video signal
15.9
VIDEO IDENTIFICATION AND STANDARD OUTPUT (Pin 7)
No video on Pin 19
60Hz video
RLOAD/GND = 5kΩ
0
6
500
6.5
mV
V
5.5
50Hz video
10.5
11.3
V
REFERENCE VOLTAGE (Pin 1)
Output voltage
I1 = 0
5.5
6
6.5
800
200
V
Ω
Output impedance
Max output current
∆I1 = ± 50µA
400
600
µA
AUTO VCR SWITCH (Pin 2)
V Switching threshold /V1 Short
●
●
With no noise on the video
± 0.2
± 0.3
± 0.4
V
V
time ct2 on ϕ1 PM Active above
(V20 < 6V)
Threshold
With noise on video
(6V < V20 < 7.3V
0.69 x V20 - 3.85
NOISE GATE (Pin 20)
Measure sampling time
Max. push out current
On the synch. pulse bottom
1
2
3
µs
Vnoise = 0.4VPP, F = 1MHz on
2VPP Video Signal
350
µA
VCR mode inhibition threshold
(long time cte)
Active above threshold
Voltage hysteresis
6.9
4.5
7.3
7.5
V
100
mV
Measure bandwidth (-3dB)
High cut frequency
Low cut frequency
2
0.7
MHz
MHz
Short time constant manual
switching threshold
Active under threshold
5
5.5
V
4/8
TEA2130
ELECTRICAL CHARACTERISTICS (continued)
(Tamb = 25oC; VCC = 12V; Pulse duration 50% of the amplitude)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
φ 2 COMPARATOR (Pin 14)
Output current
During line flyback
± 300 ± 500 ± 700
µA
µs
Delay between φ 2 falling edge
and the middle video sync. pulse
FVCO = 500 kHz
2.2
2.7
3.2
LINE MONOSTABLE (Pin 10)
Charge current
Line output high
- 67
170
1.3
µA
µA
V
Discharge current
Flip-Flop threshold
Line output low
Falling edge on the line output
LINE OUTPUT (Pin 11)
Low level
I11= 20 mA
1
V
Pulse duration
φ 2 adjustment range
R9 = 3.32kΩ , C10 = 1.5nF
27
15
29.5
18
32
µs
µs
Controlled by V14 compared with
video signal
LINE SAW-TOOTH (Pin 8)
Charge Current
R9 = 3.32 kΩ
- 200
3.5
- 180
7
- 150
µA
mA
µs
Discharge Current
Discharge Duration
Controlled by logic VCO 500kHz
6.5
LINE FLYBACK INPUT (Pin 13)
Blanking Line Threshold
Active above threshold
Active above threshold
0.35
2.7
0.4
3
0.6
3.3
V
V
φ 2 Loop Threshold and Line
Output Inhibition (Pin 11)
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)
Burst Level
RL = 2.2 kΩ to ground
9
4
V
V
Line Blanking Level
Frame Blanking Level
4.5
2.5
2.8
5
3
2
V
Delay between the midde of the
video sync. pulse and the rising
edge of the burst (t1)
2.45
3.15
µs
t 1
Burst Pulse Duration
●
●
50Hz
60Hz
4.1
3.6
4.4
3.9
4.7
4.2
µs
µs
Line Blanking Duration
Frame Blanking Duration
Fixed by flyback
Signal pin 13
Fixed by the logic
21
Line
5/8
TEA2130
ELECTRICAL CHARACTERISTICS (continued)
T
amb = 25oC; VCC = 12V; Pulse duration 50% of the amplitude
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
FRAME SAW-TOOTH GENERATOR
Low DC Voltage
1.1
15
1.3
- 8
1.45
60
V
Discharge Current
60Hz Internal Current
mA
µA
- 10
- 6
FRAME LOGIC SYNCH.
Free Running Period
Without video signal
315
Line
Synchronization Windows
Identification low
Identification 60Hz high
VCR mode
247
247
247
361
277
361
Line
Line
Line
CURRENT REFERENCE (Pin 9)
V9 Voltage
R9 = 3.32 kΩ (1%)
∆T = 80oC
1.2
1.3
1.4
V
Max. Temperature Shift
± 1
%
FRAME SAFETY INPUT (Pin 6)
Switching Threshold
Actived without negative pulse
during frame blanking time for
permanent frame blanking on SSC
output Pin 12
1.3
V
Output current
- 35
- 50
- 67
µA
6/8
TEA2130
TYPICAL TV APPLICATION
+200V DC
VERTICAL OUT
C5B503B
4.7MΩ
Line Flyback
10 VPP
Ω
470
HORIZONTAL FLYBACK INPUT
SSC OUT
J1
2.2Ω
220nF
100nF
220nF
BNC
Ω
2.2k
Ω
10k
VIDEO
INPUT
HORIZONTAL OUT
47nF
2.2k
75Ω
1nF
Ω
22nF
20
19
18
17
16
15
14
13
12
11
22k
Ω
1kΩ
HORIZONTAL
POSITION
470kΩ
VCC
TEA2130
MUTE & 50/60Hz OUT
1
2
3
4
5
6
7
8
9
10
100nF
470kΩ
100kΩ
3.32k
Ω
10k
Ω
3.3nF
1.5nF
1%
10
F
100k
Ω
µ
4.7nF
4.7nF
µ
2.2
F
1000µF
2.7kΩ
1nF
33nF
VERTICAL FEEDBACK
3.9kΩ
VCC
+12V
TYPICAL SYNC SEPARATOR APPLICATION
C5B503B
+5V
470Ω
VERTICAL OUT
2.7kΩ
J1
LINE SYNC OUTPUT
100nF
BNC
10kΩ
VIDEO
3.3nF
INPUT
220nF
75Ω
2.2kΩ
VCC
NC
20
19
18
17
16
15
14
13
12
11
TEA2130
MUTE & 50/60Hz OUT
1
2
3
4
5
6
7
8
9
10
NC
470k
100k
Ω
Ω
100nF
3.32k
1%
Ω
10kΩ
10
µ
F
2.2µF
2.7k
4.7nF
4.7nF
1000
F
µ
Ω
33nF
3.9k
Ω
VCC
+12V
7/8
TEA2130
PACKAGE MECHANICAL DATA
20 pins - PLASTIC DIP
b1
B
e
b
E
Z
Z
e3
D
20
1
11
10
Millimeters
Typ.
Inches
Dimensions
Min.
0.254
1.39
Max.
Min.
0.010
0.055
Typ.
Max.
a1
B
b
1.65
25.4
0.065
0.45
0.25
0.018
0.010
b1
D
E
e
1.000
8.5
0.335
0.100
0.900
2.54
22.86
e3
F
7.1
0.280
0.155
i
3.93
L
3.3
0.130
Z
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.
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