Datasheet TDA8218 Datasheet (SGS Thomson Microelectronics)

HORIZONTALAND VERTICAL DEFLECTION CIRCUIT

.

DIRECTFRAME-YOKE DRIVE (± 1A)

.

COMPOSITE VIDEO SIGNAL INPUT CAPA­BILITY

.

FRAME OUTPUT PROTECTION AGAINST
SHORTCIRCUITS

.

PLL

.

SUPERSANDCASTLE OUTPUT

.

VERYFEW EXTERNALCOMPONENTS

.

VERYLOW COST POWER PACKAGE

.

STABLE FRAME BLANKING PULSE, GEN­ERATEDBY EXTERNALRC, FOR COMPATI­BILITYWITH TEA5640

TDA8218

POWERDIP 16 + 2 + 2

(Plastic Package)

ORDER CODE : TDA8218

DESCRIPTION

The TDA8218is an horizontal and vertical deflec­tion circuit with super sandcastle generator.Used
with automatic PAL/SECAM decoder TEA5640,
this IC permits a complete low-cost solution for
PAL/SECAMapplications.

PINCONNECTIONS

CC1

FRAMEOSCILLATOR

V

CC2

FRAMEFLYBACKGENERATOR

GROUND
GROUND

POWERAMPLIFIERINPUT

FRAMEBLANKING R.C. NETWORK

FRAMEPOWER SUPPLY

FRAMEOUTPUT LINEOSCILLATOR

1
2
3
4
5
6
7
8
9
10

20
19
18
17
16
15
14
13
12
11

VIDEOINPUTV
SUPERSANDCASTLE OUTPUT
LINEFLYBACK
LINEOUTPUT
GROUND
GROUND
BURSTKEY R.C. NETWORK
LINESAWTOOTHINPUT
PHASEDETECTOR

September 1993

8218-01.EPS

1/9

TDA8218

BLOCK DIAGRAM

Vcc2

Vcc1

Video

Input

Line

Flyback

Vcc1

F.B.

RC

19

20

18

129

Frame

8

blanking

generator

Σ

Lineflyback

detector

Input

stage

Vcc1

Frame

oscillator

Frame-Synchro

generator

Burst gate pulse

generator

14

Power

stage

+

-

Phase

detector

13

12

3

4

Flyback

generator

Output

stage

Line

oscillator

11

YOKE

10

7

17

Vcc1

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

1 Supply Voltage 30 V

V

CC

2 Flyback Generator Supply Voltage 35 V

V

CC

V9 Frame Power Supply Voltage 60 V

I10

I10 Frame Output Current (continuous) ± 1A

V17 Line Output Voltage(external) 60 V

17 Line Output Peak Current 0.8 A

I

P

17 Line Output Continuous Current 0.4 A

I

C

T

STG

T

T

AMB

Frame Output Current (non repetitive) ± 1.5 A

NR

Storage Temperature -40 to + 150
Max Operating Junction Temperature + 150

J

Operating Ambient Temperature 0 to 70

o

C

o

C

o

C

8218-02.EPS

8218-01.TBL

THERMALDATA

Symbol Parameter Value Unit

Max Junction-case Thermal Resistance 10
Typical Junction-ambient Thermal Resistance

(Soldered on a 35µm thick 45cm2PC Board copper area)

Max Recommended Junction Temperature 120

J

40

2/9

R
R

TH(j-c)
TH(j-a)

T

o

C/W

o

C/W

o

C

8218-02.TBL

TDA8218

ELECTRICAL CHARACTERISTICS

=10V,T

V

CC1

Symbol Parameter Min. Typ. Max. Unit

SUPPLY(Pin 1)

Supply Current 15 22 mA
Supply Voltage 9 10 10.5 V

CC1

V

I

CC1

VIDEO INPUT (Pin 20)

V20 Reference Voltage (I20 = -1µA) 1.4 1.75 2 V

MWF Minimum Width of Frame Pulse

(when synchronized with TTL signal)

LINE OSCILLATOR(Pin 11)

LT11 Low Threshold Voltage 2.8 3.2 3.6 V

HT11 High Threshold Voltage 5.4 6.6 7.8 V

BI11 Bias Current 100 nA
DR11 Discharge Impedance 1.0 1.4 1.8 kΩ
FLP1 Free Running Line Period

(R = 34.9kΩ Tied to V

OT11 Oscillator Threshold for Line Output

Pulse Triggering

∆F

Horizontal Frequency Drift with Temperature (see application) 2 Hz/

∆θ

LINE OUTPUT(Pin 17)

LV17 Saturation Voltage (I

OPW Output Pulsewidth (line period = 64µs) 26 28 30 µs

LINE SAWTOOTH INPUT (Pin 13)

V13 Bias Voltage 1.8 2.4 3.2 V
Z13 Input Impedance 4.5 5.8 8 kΩ

PHASE DETECTOR (Pin 12)

I12 Output CurrentDuring Synchro Pulse 250 350 500 µA

RI12 Current Ratio (positive/negative) 0.95 1 1.05

LI12 Leakage Current -2 +2 µA
CV12 Control RangeVoltage 2.60 7.10 V

FRAME BLANKING GENERATOR (Pin 8)

External R.C. Network (Typical values : R = 100kΩ, C = 22nF)

T

Blanking Time (PIn 19, Tfb= K8 .R.C.) 1.35 ms

fb

K8 Time Blanking Coefficient 0.588 0.613 0.644
I

Output Currentduring the Frame Blanking : V8= 2V - 0.2 1 µA

O8

I

Input Current after the Frame Blanking : V8= 7V 300 450 600 µA

I8

FRAME OSCILLATOR (Pin 2)

LT2 Low Threshold Voltage 1.6 2.0 2.3 V

HT2 High Threshold Voltage 2.6 3.1 3.6 V

DIF2 LT2- HT2 1.0 V

BI2 Bias Current 30 nA

DR2 Discharge Impedance 300 470 700 Ω
FFP1 Free Running Frame Period

(R = 866kΩ Tied to V

MFP Minimum Frame Period(I20 = -100µA) with the Same RC 12.8 ms

FPR Frame Period Ratio = FFP/MFP 1.7 1.8 1.9

=25oC (unlessotherwisespecified)

AMB

, C = 2.2nF Tied to Ground)

CC1

= 200mA) 1.1 1.6 V

17

1, C = 220nFTied to Ground)

CC

50 µs

62 64 66 µs

4.6 V

20.5 23 25 ms

o

C

8218-03.TBL

3/9

TDA8218

ELECTRICAL CHARACTERISTICS

=10 V,T

V

CC1

Symbol Parameter Min. Typ. Max. Unit

FRAME OSCILLATOR(Pin 2) (continued)

FG Frame Saw-tooth Gain Between Pin 1 and non Inverting Input of the

Frame Amplifier

∆F

Vertical Frequency Drift with Temperature(seeapplication) 4.10

∆θ

FRAME POWER SUPPLY(Pin 9)

V9 Operating Voltage (with flyback Generator) 10 58 V

I9 Supply Current (V9 = 30V) 9 15 mA

FLYBACK GENERATOR SUPPLY(Pin 3)

V

2 Operating Voltage 10 30 V

CC

FRAME OUTPUT (Pin 10)

Saturation Voltageto Ground (V9 = 30V)
LV10A I10 = 0.1A 0.06 0.6 V
LV10B I10 = 1A 0.37 1 V

Saturation Voltageto V9 (V9 = 30V)

HV10A I10 = -0.1A 1.3 1.6 V
HV10B I10 = -1A 1.7 2.4 V

Saturation Voltageto V9 in FlybackMode (V10 >V9)

FV10A I10 = 0.1A 1.6 2.1 V
FV10B I10 = 1A 2.5 4.5 V

FLYBACK GENERATOR (Pin 3 and Pin 4)

Flyback Transistor on (output = high state), V

F2DA
F2DB

I

4 → 3

I

4 → 3

Flyback Transistor on (output = high state), V

FSVA
FSVB

I

3 → 4

I

3 → 4

Flyback Transistor off (output = V9 - 8V), V9 - V

FCI Leakage Current Pin 3 170 µA

SUPER SANDCASTLE OUTPUT (Pin 19)

Output Voltages(R load= 2.2kΩ)

SANDT2 Frame blanking pulse level 2 2.5 3 V
SANDL2 Line blanking pulse level 4 4.5 5 V

BG2 Burst key pulse level 8 9 V

Pulses width and timing

SC3 Delay between middle of sync pulse and leading edge of burst key pulse 2.3 2.7 3.1 µs
SC2 Duration of burst key pulse

Vertical blanking pulse width : Defined by external R.C. Pin 8

LINE FLYBACK INPUT (Pin 18)

Switching level 2 V

Maximum imput current at V

Limiting voltage at maximum current 4.3 V

τ RC network time constant (Note 1) for the burst key pulse 6 µS

Note : 1. An RC network is connected to this input.Typical value for the resistor is 27kΩ and 220pF for the capacitor. A different time

constant forRC changes the delay between the middle of the line synchro pulse and theleading edge of the burst key pulse
but also the duration of the burst keypulse.

=25oC (unless otherwise specified )

AMB

= 0.1A

=1A

= 0.1A
=1A

= 800V 8 mA

PEAK

= 30V,V4/3 with

CC2

= 30V,V3/4 with

CC2

= 30V

CC2

-0.4

-3

1.5

3.0

0.8

2.2

Hz/oC

2.1

4.5

1.1

4.5

3.7 4 5 µs

V
V

V
V

8218-04.TBL

4/9

GENERALDESCRIPTION

The TDA8218 performs all the video and power
functions required to provide signals for the line
driverand frame yoke.

It contains:

• A synchronizationseparator

• An integrated frame separator without external

components

Figure1 : SynchronizationSeparatorCircuit

VR

Video

R1

TDA8218

• A saw-tooth generator for the frame

• A power amplifier for direct drive of frame yoke

(short circuitprotected)

• An opencollector outputfor the line driver

• A line phase detector and a voltage control os-

cillator

• A super sandcastle generator.

SL1

SL2

20

R2

The slice level of sync-separationis fixed by valueof the external resistorsR1 and R2. V
fixed voltage.

Figure2 : Frame Separator

Vz

I

SL1

3I

The sync-pulseallows thedischargeof thecapaci­tor by a 2 x I current. Aline sync-pulseis not able
to discharge the capacitor under V

/2. A frame

Z

Q3

/2

Vz

sync-pulse permits the complete dischargeof the
capacitor,so during the frame sync-pulse Q

providecurrent for the otherparts of the circuit.

Q

4

Q4

ST2ST1

isan internally

R

3

8218-03.EPS

8218-04.EPS

and

5/9

TDA8218

Figure3 : Line Oscillator

Vcc1

R5

11

Phase

comparator

output

R4

The oscillator thresholds are internally fixed by
resistors. The dischargeof the capacitor depends
on the internal resistor R4. The control voltage is
appliedon resistorR5.
The sync-pulse drives the currentin the compara­tor.The line flyback integrated by the external net
workgives on pin 13 a saw tooth, the DC offset of
this saw tooth is fixed by VC. The comparator

Figure4 : PhaseComparator

8218-05.EPS

output providesapositivecurrent for the partofthe
signalon pin 13greater than to VC and a negative
currentforthe other part.Whenthe line flybackand
the videosignalare synchronized,theoutputof the
comparatorisanalternativelynegativeandpositive
current. The frame sync-pulse inhibits the compa­rator to preventfrequency drift ofthe line oscillator
on the framebeginning.

Figure 5

Integrated
Flyback

Sync pulse

Output
Current

6/9

Line
Flyback

Vcc1

12

13

Vc

SL2

ST1

8218-06.EPS

Vc

8218-07.EPS

TDA8218

Line output (Pin 17)

It is an open-collector output. The output positive
pulsetimeis 28µsfor a 64µs period. The oscillator
thresholds are internally fixed by resistors. The
oscillator is synchronized during the last half free
run period. The input current during the charge of
the capacitoris less than 100nA.

Frame outputamplifier

This amplifier is able to drive directly the frame
yoke. Its output is short circuit and overload pro­tected;it containsalso a thermalprotection.

The line flybackdetectionis provided by a compa­rator which compares the input line flyback pulse
to an internal reference. Theburst gate pulseposi­tionis fixed by the externalRC network (pin 14).It

Figure6 : Frame Oscillator

INPUT CURRENT
COMPENSATION

is referencedto themiddle of the line flyback.
The frameblankinggeneratoris a monostablewith

external R.C. The start blanking pulse is triggered
by the falling edge of the frame saw-tooth (Pin 2).
The resetis provided by a comparatorwhichcom­pares the capacitorvoltage during its charge to an
internal threshold fixed by resistors.

The frameblanking time is defined by:

T

=0.613 ⋅ R.C.

fb

ThispulseisavailableonSuperSandCastleoutput
(Pin 19).

Remark : For compatability with TEA5640, frame
blanking time must be larger than 1.15ms with
centered value @ 1.35ms (R = 100kΩ ± 1%,
C = 22nF ± 5%)

Vcc1

2

Figure7 : Super sandcastlegenerator

Flyback

Vcc1

R

Vcc1

C

BurstKey

RC

Network

Line

Input

18

8

14

To frameamplifier

Line

Flyback

Detection

Frame

Blanking

Generator

Σ

Burstgate

pulse

generator

RC

Vcc1

19

Frame

syncpulse

8218-08.EPS

SSC

Output

7/9

8218-09.EPS

TDA8218

TYPICALAPPLICATION

4.7

Vcc

+24V

Vcc1

Video

Input

Line

Flyback

27k

220pF

1.5k

120pF

100

Ω

220nF

Ω

560kΩ

15kΩ

68pF

100kΩ

180pF

Note : Pins 5 - 6 : Frame oscillator ground

Pins 15 - 16 :Frame and line power ground

Ω

100nF

µF

220nF

10%

14

20

22nF

13

22nF

18

4.7kΩ

1µF

100nF

866kΩ

21 8 39 4

22nF
5%

470µF

100k
1%

IN4002

Ω

47µF

10

TDA 8218

7

12

100k

12nF

11 5 6

Ω

2.2nF

22kΩ

Vcc1

22kΩ

Horizontal

Frequency

15

16

SSC

19 17

2.2kΩ

680pF

Vcc1

100

IN4148

220k

Vertical

Ω

Amplitude

22kΩ

100nF

FrameYoke
30 mH,15
I = 840mA

pp

Ω 220kΩ

220nF

100Ω

2.2Ω

Ω

270Ω

1000µF

1Ω

8218-10.EPS

8/9

PACKAGE MECHANICAL DATA

20 PINS - POWERDIP16 + 2+ 2

TDA8218

I

a1

L

Z

Dimensions

b

e3

20 11

110

B

D

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

e

Z

F

E

a1 0.51 0.020

B 0.85 1.4 0.033 0.055

b 0.5 0.020

b1 0.38 0.5 0.015 0.020

D 24.8 0.976
E 8.8 0.346

e 2.54 0.100

e3 22.86 0.900

F 7.1 0.280

i 5.1 0.201

L 3.3 0.130

Z 1.27 0.050

b1

PMDIP20W.EPS

DIP20PW.TBL

Information furnished is believed tobe accurate andreliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of useof suchinformation nor forany infringement ofpatents or other rights of third partieswhich may result
from itsuse. No licence is granted byimplication or otherwiseunder anypatent or patent rights ofSGS-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 useas critical components in life
support devices or systems withoutexpress written approval of SGS-THOMSON Microelectronics.

 1994 SGS-THOMSON Microelectronics - All Rights Reserved

2

Purchase of I

2

I

C Patent. Rights to use these components in a I2C system,is granted provided that thesystem conforms to

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C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips

2

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9/9