Datasheet SAA5231 Datasheet (Philips)

INTEGRATED CIRCUITS

DATA SH EET

SAA5231

Teletext video processor

Product specification
File under Integrated Circuits, IC02

November 1986

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) V
Supply current (pin 16) I
Video input amplitude (pin 27) (peak-to-peak value)

pin 2 LOW V

pin 2 HIGH V
Storage temperature range T
Operating ambient temperature range T

PACKAGE OUTLINE

28-lead dual in-line; plastic (SOT117); SOT117-1; 1996 November 14

CC

CC

27-13(p-p)
27-13(p-p)
stg
amb

typ. 12 V
typ. 70 mA

typ. 1 V
typ. 2,5 V

-20 to + 125 °C
0to+70 °C

November 1986 2

Philips Semiconductors Product specification

Teletext video processor SAA5231

, full pagewidth

CC

V

(+12 V)

(VCR)

mode input

video recorder

(PL/CBB)

sandcastle

input pulse

10

(F6)

output

6 MHz clock

17

CONTR.

VOLTAGE

OSCILLATOR

PHASE

DETECTOR

HORIZONTAL

(TTD)

output

teletext data

15

LATCHES

DATA

SLICER

ADAPTIVE

output

teletext clock

14

PHASE

CLOCK

DETECTOR

(TTC)

12

PHASE

SHIFTER

DATA

SENSE

EXTERNAL

MGH184

1311978651432

÷ 2

OSCILLATOR

external

data input

PULSE

GENERATOR

DUAL

BUFFER

POLARITY

SYNC

ADAPTIVE

SEPARATOR

27

input

video

composite

26

25 24 23 22 1921 20 18 16

(VCS)

sync output

video composite

text

composite

28

or

(TCS)

sync input

scan

composite

SAA5231

SENSE

'NO INPUT'

(SCS)

sync input

November 1986 3

SENSE

'NO LOAD'

HF LOSS

COMPENSATOR

GAIN

SWITCH

Fig.1 Block diagram.

sync outputvideo input

level select

Philips Semiconductors Product specification

Teletext video processor SAA5231

PINNING

handbook, full pagewidth

sync output

video input level select

HF filter

store HF
store amplitude
store zero level

external data input

data timing

store phase

VCR

crystal

clock filter

ground

clock output (TTC)

1
2
3
4
5
6
7
8

9
10
11
12
13

SAA5231

MGH185

text composite sync input (TCS)

scan composite sync input (SCS)

28

composite video input

27

black level

26

video composite sync output (VCS)

25

pulse timing capacitor

24
23

pulse timing resistor
sandcastle input pulse (PL/CBB)

22
21

filter 1
oscillator input

20

filter 2

19

oscillator output

18

6 MHz output (F6)

17

supply V

16
1514

data output (TTD)

or

CC

Fig.2 Pinning diagram.

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)

Supply voltage (pin 16) V
Storage temperature range T
Operating ambient temperature T

November 1986 4

CC
stg
amb

max. 13,2 V

− 20 to + 125 °C
0 to + 70 °C

Philips Semiconductors Product specification

Teletext video processor SAA5231

CHARACTERISTICS

= 12 V; T

V

CC

Supply (pin 16)
Supply voltage V

Supply current I

Video input and sync separator

Video input amplitude (sync to white)
(peak-to-peak value)

video input select level LOW (pin 2) V
video input select level HIGH (pin 2) V
Source impedance Z
Sync amplitude (peak-to-peak value) V

Video input level select

Input voltage LOW V
Input voltage HIGH V
Input current LOW I
Input current HIGH I

Text composite sync input (

Input voltage LOW V
Input voltage HIGH V

Scan composite sync input (

Input voltage LOW V
Input voltage HIGH V

Select video sync from pin 1

Input current (pin 28)

at V

= 0 to 7 V I

28

at V

= 10 V to V

28

Video composite sync output (VCS)

Output voltage LOW V
Output voltage HIGH V
D.C. output current LOW I
D.C. output current HIGH I
Sync separator delay time t

=25°C with external components as shown in application circuits unless otherwise stated.

amb

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

CC

CC

27-13(p-p)
27-13(p-p)

−−250 Ω

s

27-13(p-p)

2-13

2-13
2
2

10,8 12,0 13,2 V
50 70 105 mA

0,7 1 1,4 V
1,75 2,5 3,5 V

0,1 − 1V

0 − 0,8 V
2,0 − 5,5 V
0 −−150 µA
0 − 1mA

TCS)

28-13

28-13

0 − 0,8 V
2,0 − 7,0 V

SCS)

0 − 1,5 V
3,5 − 7,0 V

−40 −70 −100 µA

−5 −+5µA

0 − 0,4 V
2,4 − 5,5 V

−−0,5 mA

−−−1,5 mA

0,25 0,35 0,40 µs

CC

28

I

28

25
25
d

28-13

28-13

25-13

25-13

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)

Video sync amplitude
(peak-to-peak value)

Output current I
D.C. output voltage

RL to ground (0 V) V
R

to VCC (12 V) V

L

Sandcastle input pulse (

PL/CBB)

Phase lock pulse (PL)

PL on (LOW) V
PL off (HIGH) V

Blanking pulse (CBB)

CBB on (LOW) V
CBB off (HIGH) V

Input current I

Phase locked loop (PLL)

Phase detector timing
Pulse duration

using composite video
using scan composite sync t

time PL must be LOW
to make VCO run-free t

6 MHz clock output (F6)

A.C. output voltage
(peak-to-peak value)

A.C. and d.c. output voltage range V
Rise and fall time t
Load capacitance C

Video recorder mode input (

VCR)

VCR-mode on (LOW) V
VCR-mode off (HIGH) V
Input current I

Data slicer

Data amplitude of video input (pin 27)

video input level select LOW (pin 2) V
video input level select HIGH (pin 2) V

V

1-13(p-p)

V

1-13(p-p)

1

1-13

1-13

22-13

22-13

22-13

22-13
22

t

p

p

L

V

17-13(p-p)

17-13(max)

; t

r

f

17-13

10-13

10-13
10

27-13

27-13

0,20 0,45 0,65 V

−−1V

− 3 −+3mA

1,0 1,4 2,0 V
9,0 10,1 11,0 V

0 − 3V
3,9 − 5,5 V

0 − 0,5 V
1,0 − 5,5 V

−10 −+10 µA

2,0 2,4 2,8 µs

3,0 3,5 4,0 µs

100 −−µs

123V

4 − 8,5 V
20 − 40 ns

−−40 pF

0 − 0,8 V
2,0 − V

CC

V

−10 −+10 µA

0,30 0,46 0,70 V
0,75 1,15 1,75 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)

D.C. output voltage (centre) V
Load capacitance C
Rise and fall times t
Delay of falling edge relative to

other edges of TTD

Teletext data output

A.C. output voltage
(peak-to-peak value)

D.C. output voltage (centre) V
Load capacitance C
Rise and fall times t

V

14-13(p-p)

14-13

L

; t

r

f

t

d

V

15-13(p-p)

15-13

L

; t

r

f

2,5 3,5 4,5 V

3,0 4,0 5,0 V

−−40 pF
20 30 45 ns

−20 0 +20 ns

2,5 3,5 4,5 V

3,0 4,0 5,0 V

−−40 pF
20 30 45 ns

APPLICATION INFORMATION

handbook, full pagewidth

1.2
kΩ

composite

video

input

sync out

2.2 µF

28 27 26 25 24 23 22 21 20 19 18 17 16 15

1

2345678910111213

video

1.2
input

kΩ

level

select

68
nF

15
pF

nF

22
nF

10 nF

27
pF

V

CC

TCS
sandcastle input

VCS
F6
TTD

15
µH

TTC

MGH189

47 µF

SAA5231

data

input

82 Ω

50
µH

270pF100

VCR

47 nF

68
kΩ

220

pF

1

470

pF

22
nF

3.3
kΩ

(1)

pF

47 nF

47 nF

13.875 MHz
15 pF

10
pF

XTAL

15
µF

14

(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.

November 1986 7

Philips Semiconductors Product specification

Teletext video processor SAA5231

handbook, full pagewidth

composite

video

input

sync out

47 nF

1.2
kΩ

220

pF

470

pF

68
kΩ

22
nF

SAA5231

data

input

18
pF

270pF100

2.2 µF
68

nF

28 27 26 25 24 23 22 21 20 19 18 17 16 15

1

2345678910111213

1

1.2
kΩ

video

input
level

select

15

nF

pF

6

MHz

47 nF

330

Ω

15 pF

22
pF

XTAL

13.875 MHz

(1)

pF

15

22

µF

nF

10 nF

27
pF

14

(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

CC

TCS
sandcastle input

VCS
F6
TTD

15

µH

TTC

MGH188

handbook, full pagewidth

composite

video

input

sync out

1.2
kΩ

2.2 µF
68

nF

28 27 26 25 24 23 22 21 20 19 18 17 16 15

1

2345678910111213

1

1.2
kΩ

video

input
level

select

15

nF

pF

220

pF

470

pF

22
nF

68
kΩ

10 µF

47 nF

SAA5231

data

input

470Ω3.3

kΩ

6

MHz

18
pF

(1)

270pF100

pF

15 pF

220 nF

47 nF

330

Ω

22
pF

XTAL

13.875 MHz

(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

V

CC

15

22

µF

nF

TCS
sandcastle input

VCS
F6
TTD

15
µH

TTC

MGH187

14

10 nF

27
pF

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
Load capacitance (CL) 20 pF
Temperature range (T) −20 to +70 °C; frequency tolerance maximum ± 30 × 10
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

−6

−6

Variable inductance Fig. 3

Inductance (L) 50 µH at 1 kHz
Static parallel capacitance (C

) typical 4 pF

o

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 (C

) 20 pF

L

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.

handbook, full pagewidth

VIDEO

SIGNAL

(pin 27)

SANDCASTLE

INPUT

(pin 22)

0 1.5 4.7 8.5 33.5

Fig.5 Sandcastle waveform and timing.

November 1986 11

5 V

2 V
0 V

t (µs)

MGH186

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

seating plane

L

Z

28

1

pin 1 index

D

A

2

A

A

1

e

b

w M

b

1

15

E

14

c

M

(e )

M

E

1

H

0 5 10 mm

scale

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

A

A

A

UNIT

inches

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

max.

mm

OUTLINE

VERSION

SOT117-1

1 2

min.

max.

1.7

1.3

0.066

0.051

IEC JEDEC EIAJ

051G05 MO-015AH

b

b

1

0.53

0.38

0.020

0.014

0.32

0.23

0.013

0.009

REFERENCES

cD E weM

(1) (1)

36.0

35.0

1.41

1.34

November 1986 12

14.1

13.7

0.56

0.54

(1)

92-11-17
95-01-14

Z

max.

1.75.1 0.51 4.0

0.0670.20 0.020 0.16

L

3.9

3.4

EUROPEAN

PROJECTION

M

15.80

15.24

0.62

0.60

H

E

17.15

15.90

0.68

0.63

0.252.54 15.24

0.010.10 0.60

ISSUE DATE

e

1

0.15

0.13

Philips Semiconductors Product specification

Teletext video processor SAA5231

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.

This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in

“IC Package Databook”

our

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 This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.

(order code 9398 652 90011).

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 (T
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.

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.

stg max

). If the

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