SAA5231 [NXP]
Teletext video processor; 图文电视视频处理器
| 型号： | SAA5231 |
| 厂家： | 
NXP |
| 描述： | Teletext video processor |
| 文件： | 总13页 (文件大小：88K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
SAA5231
Teletext video processor
November 1986
Product specification
File under Integrated Circuits, IC02
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
GENERAL DESCRIPTION
The SAA5231 is a bipolar integrated circuit intended as a successor to the SAA5030. It extracts Teletext Data from the
video signal, regenerates Teletext Clock and synchronizes the text display to the television syncs. The integrated circuit
is intended to work in conjunction with CCT (Computer Controlled Teletext), EUROM or other compatible devices.
Features
• Adaptive data slicer
• Data clock regenerator
• Adaptive sync separator, horizontal phase detector and 6 MHz VCO forming display phase locked loop (PLL)
QUICK REFERENCE DATA
Supply voltage (pin 16)
VCC
ICC
typ.
typ.
12 V
Supply current (pin 16)
70 mA
Video input amplitude (pin 27) (peak-to-peak value)
pin 2 LOW
V27-13(p-p)
V27-13(p-p)
Tstg
typ.
typ.
1 V
pin 2 HIGH
2,5 V
Storage temperature range
Operating ambient temperature range
-20 to + 125 °C
0 to + 70 °C
Tamb
PACKAGE OUTLINE
28-lead dual in-line; plastic (SOT117); SOT117-1; 1996 November 14
November 1986
2
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
GM1H84
k
November 1986
3
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
PINNING
text composite sync input (TCS)
or
scan composite sync input (SCS)
sync output
1
2
28
27
26
25
24
video input level select
HF filter
composite video input
black level
3
store HF
video composite sync output (VCS)
pulse timing capacitor
4
store amplitude
store zero level
external data input
data timing
5
23 pulse timing resistor
sandcastle input pulse (PL/CBB)
6
22
21 filter 1
7
SAA5231
8
store phase
oscillator input
9
20
19
18
17
16
filter 2
10
11
VCR
crystal
oscillator output
6 MHz output (F6)
clock filter 12
ground
supply V
CC
13
clock output (TTC) 14
15 data output (TTD)
MGH185
Fig.2 Pinning diagram.
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
Supply voltage (pin 16)
VCC
max.
13,2 V
Storage temperature range
Operating ambient temperature
Tstg
− 20 to + 125 °C
0 to + 70 °C
Tamb
November 1986
4
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
CHARACTERISTICS
VCC = 12 V; Tamb = 25 °C with external components as shown in application circuits unless otherwise stated.
PARAMETER
SYMBOL
MIN.
TYP. MAX. UNIT
Supply (pin 16)
Supply voltage
Supply current
VCC
10,8
50
12,0
70
13,2
105
V
ICC
mA
Video input and sync separator
Video input amplitude (sync to white)
(peak-to-peak value)
video input select level LOW (pin 2)
video input select level HIGH (pin 2)
Source impedance
V27-13(p-p)
V27-13(p-p)
Zs
0,7
1,75
−
1
1,4
3,5
250
1
V
V
Ω
V
2,5
−
Sync amplitude (peak-to-peak value)
V27-13(p-p)
0,1
−
Video input level select
Input voltage LOW
Input voltage HIGH
Input current LOW
Input current HIGH
V2-13
V2-13
I2
0
−
−
−
−
0,8
5,5
−150
1
V
2,0
0
V
µA
mA
I2
0
Text composite sync input (TCS)
Input voltage LOW
V28-13
V28-13
0
−
−
0,8
7,0
V
V
Input voltage HIGH
2,0
Scan composite sync input (SCS)
Input voltage LOW
Input voltage HIGH
V28-13
V28-13
0
−
−
1,5
7,0
V
V
3,5
Select video sync from pin 1
Input current (pin 28)
at V28 = 0 to 7 V
I28
I28
−40
−5
−70
−100
+ 5
µA
µA
at V28 = 10 V to VCC
−
Video composite sync output (VCS)
Output voltage LOW
V25-13
V25-13
I25
0
−
0,4
V
Output voltage HIGH
2,4
−
−
5,5
V
D.C. output current LOW
D.C. output current HIGH
Sync separator delay time
−
0,5
mA
mA
µs
I25
−
−
−1,5
0,40
td
0,25
0,35
November 1986
5
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
PARAMETER
SYMBOL
MIN.
TYP. MAX. UNIT
Dual polarity buffer output
TCS amplitude
(peak-to-peak value)
V1-13(p-p)
V1-13(p-p)
I1
0,20
−
0,45
−
0,65
1
V
Video sync amplitude
(peak-to-peak value)
V
Output current
− 3
−
+ 3
mA
D.C. output voltage
RL to ground (0 V)
RL to VCC (12 V)
V1-13
V1-13
1,0
9,0
1,4
2,0
V
V
10,1
11,0
Sandcastle input pulse (PL/CBB)
Phase lock pulse (PL)
PL on (LOW)
V22-13
V22-13
0
−
−
3
V
V
PL off (HIGH)
3,9
5,5
Blanking pulse (CBB)
CBB on (LOW)
CBB off (HIGH)
Input current
V22-13
V22-13
I22
0
−
−
−
0,5
V
1,0
−10
5,5
V
+ 10
µA
Phase locked loop (PLL)
Phase detector timing
Pulse duration
using composite video
tp
tp
2,0
3,0
2,4
3,5
2,8
4,0
µs
µs
using scan composite sync
time PL must be LOW
to make VCO run-free
tL
100
1
−
−
µs
6 MHz clock output (F6)
A.C. output voltage
(peak-to-peak value)
V17-13(p-p)
2
3
V
A.C. and d.c. output voltage range
Rise and fall time
V17-13(max)
tr; tf
4
−
−
−
8,5
40
40
V
20
−
ns
pF
Load capacitance
C17-13
Video recorder mode input (VCR)
VCR-mode on (LOW)
VCR-mode off (HIGH)
Input current
V10-13
V10-13
I10
0
−
−
−
0,8
V
2,0
−10
VCC
+10
V
µA
Data slicer
Data amplitude of video input (pin 27)
video input level select LOW (pin 2)
video input level select HIGH (pin 2)
V27-13
V27-13
0,30
0,75
0,46
1,15
0,70
1,75
V
V
November 1986
6
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
PARAMETER
SYMBOL
MIN.
TYP. MAX. UNIT
Teletext clock output
A.C. output voltage
(peak-to-peak value)
V14-13(p-p)
2,5
3,5
4,5
V
D.C. output voltage (centre)
Load capacitance
V14-13
CL
3,0
−
4,0
−
5,0
40
V
pF
ns
ns
Rise and fall times
tr; tf
td
20
−20
30
0
45
Delay of falling edge relative to
other edges of TTD
+20
Teletext data output
A.C. output voltage
(peak-to-peak value)
V15-13(p-p)
2,5
3,5
4,5
V
D.C. output voltage (centre)
Load capacitance
V15-13
CL
3,0
−
4,0
−
5,0
40
45
V
pF
ns
Rise and fall times
tr; tf
20
30
APPLICATION INFORMATION
V
47 µF
CC
47 nF
47 nF
3.3
kΩ
82 Ω
47 nF
15
µF
22
nF
TCS
sandcastle input
1.2
kΩ
VCS
F6
68
kΩ
TTD
50
µH
2.2 µF
10
pF
composite
video
input
10 nF
68
nF
220
pF
(1)
28
1
27
2
26
25
4
24
23
6
22
21
20
9
19
10
18
11
17
12
16
13
15
27
pF
15
µH
sync out
SAA5231
3
5
7
8
14
TTC
15
pF
1
nF
470 22
pF nF
270 100
video
input
level
XTAL
13.875 MHz
1.2
kΩ
pF
pF
15 pF
select
data
input
VCR
MGH189
(1) Coil: 50 µH at 1 kHz, Co = 4 pF. Adjust the free-running frequency to 6000 kHz ± 30 kHz.
Fig.3 Application circuit using L/C circuit in PLL.
7
November 1986
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
V
CC
47 nF
47 nF
15
µF
22
nF
TCS
sandcastle input
1.2
kΩ
VCS
F6
6
MHz
330
Ω
68
kΩ
TTD
2.2 µF
composite
10 nF
18
pF
68
nF
220
pF
video
input
22
pF
(1)
28
1
27
2
26
25
4
24
23
6
22
21
20
19
10
18
11
17
12
16
13
15
27
pF
15
µH
sync out
SAA5231
3
5
7
8
9
14
TTC
15
pF
1
nF
470 22
pF nF
270 100
pF pF
video
input
level
XTAL
13.875 MHz
1.2
kΩ
15 pF
select
data
input
MGH188
(1) Quartz crystal e.g. catalogue number 4322 143 04101. Adjust the free-running frequency to 6000,2 kHz ± 0,2 kHz.
a. using quartz crystal in PLL
V
10 µF
CC
220 nF
47 nF
470 3.3
kΩ
Ω
47 nF
15
µF
22
nF
TCS
sandcastle input
1.2
kΩ
VCS
F6
6
MHz
330
Ω
68
kΩ
TTD
2.2 µF
composite
video
10 nF
18
pF
68
nF
220
pF
22
pF
(1)
input
28
1
27
2
26
25
4
24
23
6
22
21
20
19
10
18
11
17
12
16
13
15
27
pF
15
µH
sync out
SAA5231
3
5
7
8
9
14
TTC
15
pF
1
nF
470 22
pF nF
270 100
pF pF
video
input
level
XTAL
13.875 MHz
1.2
kΩ
15 pF
select
data
input
MGH187
(1) Ceramic resonator e.g. Kyocera KBR 6,0 M. Adjust the free-running frequency to 6010 kHz ± 5 kHz.
b. using ceramic resonator in PLL.
Fig.4 Application circuit
November 1986
8
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
Component specifications
Specifications of some external components in Figs 3, 4a and 4b.
Quartz crystal 13,875 MHz; Figs 3, 4a and 4b.
Load resonance frequency (f) 13,875 MHz; adjustment tolerance ± 40 × 10−6
Load capacitance (CL) 20 pF
Temperature range (T) −20 to +70 °C; frequency tolerance maximum ± 30 × 10−6
Resonance resistance (Rr) typical 10 Ω maximum 60 Ω
Motional capacitance (C1) typical 19 fF
Static parallel capacitance (Co) typical 5 pF
Fixed inductance Figs 3, 4a and 4b.
Inductance (L) 15 µH ± 20%
Quality factor (Q) minimum 20
Variable inductance Fig. 3
Inductance (L) 50 µH at 1 kHz
Static parallel capacitance (Co) typical 4 pF
Quartz crystal Fig. 4a
Preferred type 4322 143 04101
Load resonance frequency (f) 6 MHz; adjustment tolerance ± 40 × 10−6
Load capacitance (CL) 20 pF
Temperature range (T) −20 to +70 °C; frequency tolerance ± 30 × 10−6
Resonance resistance (Rr) 60 Ω
Motional capacitance (C1) typical 28 fF
Static parallel capacitance (Co) typical 7 pF
Ceramic resonator; Fig. 4b
Preferred type KBR 6,0 M, Kyocera
Load resonance frequency (f) 6 MHz; adjustment tolerance ± 0,5%
Load capacitance (CL) 20 pF
Temperature range (T) −20 to +70 °C; frequency tolerance maximum ± 0,3%
Resonance resistance (Rr) typical 6 Ω
Motional capacitance (C1) typical 9 pF
Static parallel capacitance (Co) typical 60 pF
Ageing (10 years) f maximum ± 0,3%
November 1986
9
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
The function is quoted against the corresponding pin number.
1. Synch output to TV
Output with dual polarity buffer, a load resistor to 0 V or + 12 V selects positive-going or negative-going syncs.
2. Video input level select
When this pin is LOW a 1 V video input level is selected. When the pin is not connected it floats HIGH selecting a
2,5 V video input level.
3. HF filter
The video signal for the h.f.-loss compensator is filtered by a 15 pF capacitor connected to this pin.
4. Store h.f.
The h.f. amplitude is stored by a 1 nF capacitor connected to this pin.
5. Store amplitude
The amplitude for the adaptive data slicer is stored by a 470 pF capacitor connected to this pin.
6. Store zero level
The zero level for the adaptive data slicer is stored by a 22 nF capacitor connected to this pin.
7. External data input
Current input for sliced teletext data from external device.
Active HIGH level (current), low impedance input.
8. Data timing
A 270 pF capacitor is connected to this pin for timing of the adaptive data slicer.
9. Store phase
The output signal from the clock phase detector is stored by a 100 pF capacitor connected to this pin.
10. Video tape recorder mode (VCR)
Signal input to command PLL into short time constant mode. Not used in application circuit Fig.4a or Fig.4b.
11. Crystal
A 13,875 MHz crystal, 2 x data rate, connected in series with a 15 pF capacitor is applied via this pin to the oscillator
and divide-by-two to provide the 6,9375 MHz clock signal.
12. Clock filter
A filter for the 6,9375 MHz clock signal is connected to this pin.
13. Ground (0 V)
14. Teletext clock output (TTC)
Clock output for CCT (Computer Controlled Teletext).
15. Teletext data output (TTD)
Data output for CCT.
16. Supply voltage VCC (+ 12 V typ.)
17. Clock output (F6)
6 MHz clock output for timing and sandcastle generation in CCT.
18. Oscillator output (6 MHz)
A series resonant circuit is connected between this pin and pin 20 to control the nominal frequency of the VCO.
19. Filter 2
A filter with a short time constant is connected to this pin for the horizontal phase detector. It is used in the video
recorder mode and while the loop is locking up.
November 1986
10
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
20. Oscillator input (6 MHz)
See pin 18.
21. Filter 1
A filter with a long time constant is connected to this pin for the horizontal phase detector.
22. Sandcastle input pulse (PL/CBB)
This input accepts a sandcastle waveform, which is formed from PL and CBB from the CCT.
Signal timing is shown in Fig.5.
23. Pulse timing resistor
The current for the pulse generator is defined by a 68 Ω resistor connected to this pin.
24. Pulse timing capacitor
The timing of the pulse generator is determined by a 220 pF capacitor connected to this pin.
25. Video composite sync output (VCS)
The output signal is for CCT.
26. Black level
The black level for the adaptive sync separator is stored by a 68 nF capacitor connected to this pin.
27. Composite video input (CVS)
The composite video signal is input via a 2,2 µF clamping capacitor to the adaptive sync separator.
28. Text composite sync input (TCS)/Scan composite sync input (SCS)
TCS is input from CCT or SCS from external sync circuit. SCS is expected when there is no load resistor at pin 1.
If pin 28 is not connected the sync output on pin 1 will be the composite video input at pin 27, internally buffered.
VIDEO
SIGNAL
(pin 27)
5 V
SANDCASTLE
INPUT
(pin 22)
2 V
0 V
t (µs)
0 1.5 4.7 8.5
33.5
MGH186
Fig.5 Sandcastle waveform and timing.
November 1986
11
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
PACKAGE OUTLINE
handbook, full pagewidth
DIP28: plastic dual in-line package; 28 leads (600 mil)
SOT117-1
D
M
E
A
2
A
L
A
1
c
e
w M
Z
b
1
(e )
1
b
M
H
28
15
pin 1 index
E
1
14
0
5
10 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
(1)
A
max.
A
A
Z
(1)
(1)
1
2
UNIT
mm
b
b
c
D
E
e
e
L
M
M
w
1
1
E
H
min.
max.
max.
1.7
1.3
0.53
0.38
0.32
0.23
36.0
35.0
14.1
13.7
3.9
3.4
15.80
15.24
17.15
15.90
5.1
0.51
4.0
2.54
0.10
15.24
0.60
0.25
0.01
1.7
0.013
0.009
0.066
0.051
0.020
0.014
1.41
1.34
0.56
0.54
0.15
0.13
0.62
0.60
0.68
0.63
inches
0.20
0.020
0.16
0.067
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
92-11-17
95-01-14
SOT117-1
051G05
MO-015AH
November 1986
12
Philips Semiconductors
Product specification
Teletext video processor
SAA5231
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (Tstg max). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “IC Package Databook” (order code 9398 652 90011).
Soldering by dipping or by wave
The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
DEFINITIONS
Data sheet status
Objective specification
Preliminary specification
Product specification
This data sheet contains target or goal specifications for product development.
This data sheet contains preliminary data; supplementary data may be published later.
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
November 1986
13
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