Datasheet TEA2037A Datasheet (SGS Thomson Microelectronics)

HORIZONTALAND VERTICALDEFLECTIONMONITOR

.

DIRECTLINE DARLINGTON DRIVE

.

DIRECTFRAME-YOKEDRIVE (± 1A)

.

COMPOSITE VIDEO SIGNAL INPUT CAPA­BILITY

.

FRAME OUTPUT PROTECTION AGAINST
SHORT CIRCUITS

.

PLL

.

HORIZONTAL OSCILLATOR FREQUENCY
RANGEFROM 15kHz TO 100kHz

.

VERTICAL OSCILLATOR FREQUENCY
RANGEFROM 30Hz TO 120Hz

.

VERYFEWEXTERNALCOMPONENT

.

VERYLOWCOST POWERPACKAGE

TEA2037A

POWERDIP (8+8)

(Plastic Package)

ORDER CODE : TEA2037A

DESCRIPTION

The TEA2037Aisanhorizontaland verticaldeflec­tion circuit.It uses the same concept as TEA2117
but optimisedfor small screens,for a verylow cost
solution.

PINCONNECTIONS

FRAME OSCILLATOR

FLYBACK GENERATORSUPPLY

FRAMEFLYBACK

GROUND
GROUND

INVERTING INPUT

FRAMEPOWER SUPPLY

FRAME OUTPUT

1
2
3
4
5
6
7
8

16
15
14
13
12
11
10

9

V

CC1

VIDEO INPUT
LINE OUTPUT
GROUND
GROUND
LINE FLYBACK
PHASEDETECTOR
LINE OSCILLATOR

September 1996

2037A-01.EPS

1/9

TEA2037A

BLOCK DIAGRAM

16

4

5
12
13

INPUT

15

STAGE

123

FRAME

OSCILLATOR

FRAME

FRAME-SYNC.

OSCILLATOR

SEPARATOR

PHASE

DETECTOR

7

+

POWER

STAGE

-

LINE

OSCILLATOR

FLYBACK

GENERATOR

OUTPUT

STAGE

8
6

14

Yoke

TEA2037A

91011

V

CC1

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V
V

I

V
I

p14

I

C14

T

SupplyVoltage 30 V

CC1

Flybcak Generator SupplyVoltage 35 V

2

Frame Power Supply Voltage 60 V

7

Frame Output Current (non repetitive) ± 1.5 A

8nr

I

Frame Output Current (continuous) ± 1A

8

LineOutput Voltage(external) 60 V

14

LineOutput Peak Current 0.8 A
LineOutput Continuous Current 0.4 A
Storage Temperature -40, +150

stg

T

Max. Operating Junction Temperature +150

j

2037A-02.EPS

o

C

o

C

2037A-01.TBL

THERMALDATA

Symbol Parameter Value Unit

R

th (j-c)

R

th (j-a)

ELECTRICALCHARACTERISTICS (T

Symbol Parameter Min. Typ. Max. Unit

SUPPLY (shunt regulator) (Pin 16)

I

CC1

V

∆V

LPS Starting Threshold for Line Output Pulses 5 V

2/9

Junction-case Thermal Resistance Max. 15
Junction-ambient Thermal Resistance

(soldered on a 35µm thick 45cm
Recommended Junction Temperature Max. 120

T

j

2

PC board copper area)

=25oC)

amb

Typ. 45

SupplyCurrent 10 20 mA
SupplyVoltage (I

CC1

VoltageVariation (I

CC1

= 15mA)

CC1

: 10mA to20mA)

CC1

9

-280

9.8
50

10.5

+280VmV

o

C/W

o

C/W

o

C

2037A-02.TBL

2037A-03.TBL

TEA2037A

ELECTRICALCHARACTERISTICS (T

=25oC) (continued)

amb

Symbol Parameter Min. Typ. Max. Unit

VIDEO INPUT (Pin 15)

V

Reference Voltage (I15=-1µA) 1.4 1.75 2 V

15

MWF Minimum Width of Frame Pulse (when synchronized with TTL Signal) 50 µs

V

Sync Bottom to Black Level (R

IN

= 560kΩ) 0.2 0.3 V

SYNC 15

LINE OSCILLATOR (Pin 9)

LT9 Low Threshold Voltage 2.8 3.2 3.6 V

HT9 High ThresholdVoltage 5.4 6.6 7.8 V

BI9 Bias Current 100 nA

DR9 Discharge Impedance 1.0 1.4 1.8 kΩ

FLP1 Free Running Line Period

(R = 34.9kΩ Tied to V

CC1

, C= 2.2nF Tied to Ground)

62 64 66 µs

FLP2 Free Running Line Period (R = 13.7kΩ, C= 2.2nF) 27 µs

OT9 Oscillator Threshold for Line OutputPulse Triggering 4.6 V

∆F

∆θ

Horizontal Frequency Driftwith Temperature (see application Fig. 8) 2 Hz/

LINE OUTPUT (Pin 14)

LV14 Saturation Voltage (I

= 200mA) 1.1 1.6 V

14

OPW Output Pulse Width (line period = 64µs) 20 22 24 µs

LINE FLYBACK INPUT (Pin11)

V

Bias Voltage 1.8 2.4 3.2 V

11

Z11 InputImpedance 4.5 5.8 8 kΩ

PHASE DETECTOR

I

Output Current during Synchro Pulse 250 450 800 µA

10

RI10 Current Ratio (positive/negative) 0.95 1 1.05
LI10 Leakage Current -2 +2 µA

CV10 ControlRange Voltage 2.60 7.10 V

FRAME OSCILLATOR (PIn 1)

LT1 Low Threshold Voltage 1.6 2.0 2.3 V

HT1 High ThresholdVoltage 2.6 3.1 3.6 V

BI1 Bias Current 30 nA

DR1 Discharge Impedance 300 470 700 kΩ

FFP1 Free Running Line Period

(R = 845kΩ Tied to V

CC1

MFP Minimum Frame Period (I

, C = 180nF Tiedto Ground)

= -100µA) (with the same RC) 12.8 ms

15

20.5 23 25 ms

FFP2 Free Running Line Period (R = 408kΩ, C = 220nF) 14.3 ms

FPR Frame PeriodRatio = 1.7 1.8 1.9

FG Frame Saw-tooth Gain between Pin 1 and non-inverting Input of the

-0.4

Frame Amplifier

∆F

∆θ

Vertical Frequency Driftwith Temperature (see application Fig. 8) 4 ⋅ 10

-3

FRAME POWER SUPPLY (Pin 7)

V

Operating Voltage (with flyback generator) 10 58 V

7

I

SupplyCurrent (V7= 30V) 22 mA

7

FLYBACK GENERATOR SUPPLY (PIn 2)

V

Operating Voltage 10 30 V

2

PP

o

Hz/oC

C

2037A-04.TBL

3/9

TEA2037A

ELECTRICALCHARACTERISTICS (T

=25oC) (continued)

amb

Symbol Parameter Min. Typ. Max. Unit

FRAME OUTPUT (PIn 8)

LV8A
LV8B

HV8A
HV8B

FV8A
FV8B

Saturation Voltage to Ground (V

= 0.1

I

8

=1A

I

8

Saturation Voltage toV

= -0.1

I

8

= -1A

I

8

7(V7

Saturation Voltage to V7 in Flyback Mode (V

= 0.1

I

8

=1A

I

8

7

= 30V)

= 30V)

8>V7

0.0.6

0.37

1.3

1.7

0.6
1

1.6

2.4

)

1.6

2.5

2.1

4.5

FLYBACK GENERATOR (Pins 2 and 3)

F2DA
F2DB
FSVA
FSVB

Flyback Transistor on (output = high state) (V
V3/2 with I

V2/3 with I
Flyback Transistor off (output = V

3 → 2

I

3 → 2
3 → 2

I

3 → 2

= 0.1A
=1A
= 0.1
=1A

- 8V) (V7=V2= 30V)

7

= 30V)

2

1.5

3.0

0.8

2.2

2.1

4.5

1.1

4.5

FCI Leakage Current Pin 2 170 µA

The TEA2037Aperforms all the video and power
functionsrequired to providesignals for the direct
driveof theline darlingtonand frame yoke.

It contains:

- A shuntregulator

- A synchronizationseparator

- An integrated frame separator without external
components

- A saw-toothgeneratorfor the frame

- A power amplifier for direct drive of frame yoke
(short circuitprotected)

- Anopenc ollectoroutputfor the linedarli ngt ondriv e

- A linephasedetectoranda voltagecontro losc illator

Theslice level ofsync-separationisfixedby value
of the externalresistors R

and R2.VRis an inter-

1

nallyfixed voltage.
Thesync-pulseallowsthe discharge of thecapaci-

tor by a 2x 1 current. Aline sync-pulseis notable
todischargethecapacitorunderV

/2. Aframesync

Z

pulse permits the complete discharge of the ca­pacitor,so during theframesync-pulseQ3 andQ4
providecurrent for the other parts of thecircuit.

Figure2 : Frame Separator

V

Z

V
V

V
V

V
V

V
V
V
V

2037A-05.TBL

Figure1 : SynchronizationSeparator Circuit

SL1 SL2

V

R

15

R1

Video

R2

4/9

Q3

I

ST1 ST2

/2

V

Z

3I

SL1

The oscillator thresholds are internally fixed by
resistors. The discharge of the capacitor depends
on the internal resistor R4. The control voltage is
appliedon resistorR5.

2037A-03.EPS

Q4

2037A-04.EPS

Figure3 : Line Oscillator

TEA2037A

V

CC1

Phase

R5

Comparator

Output

Figure4 : Phase Comparator

Line
Flyback

9

R4

2037A-05.EPS

currentfor the otherpart.Whenthelineflybackand
thevideosignal are synchronized,theoutputofthe
comparatorisanalternativelynegativeandpositive
current.The framesync-pulseinhibits the compa­rator to prevent frequency drift of the line oscillator
on the framebeginning.

Figure5

Integrated
Flyback

Sync Pulse

Output
Current

V

C

The sync-pulse drives the currentin the compara­tor. The line flyback integrated by the external
networkgiveson pin 11a saw tooth, theDC offset
of this saw tooth is fixed by VC. The comparator
outputprovidesapositivecurrentforthe part of the
signalon pin 11 greater thanto VC and anegative

2037A-06.EPS

ST1

10

ST2

V

CC1

11

V

C

2037A-07.EPS

5/9

TEA2037A

Line Output (pin 14)

It isan open collectoroutput which is able to drive
pulse current of 800mA for a rapid discharging of
the darlingtonbase. The outputpulse time is22µs
for a 64µs period.

The oscillator thresholds are internally fixed by
resistors. Theoscillator is synchronizedduringthe

Figure6 : Frame Oscillator

INPUT CURRENT
COMPENSATION

1

last half free run period. The input current during
the chargeof the capacitorisless than100nA.

Frame Output Amplifier

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

V

CC1

Frame

Sync Pulse

To Frame

Amplifier

2037A-08.EPS

6/9

TYPICALAPPLICATION FOR DISPLAY UNITS
Figure7 : Applicationwithout flyback generator and with sync-pulse drive ;yoke : 72mH, 40Ω

TEA2037A

V

28V

CC

1kΩ

100µF

V

CC1

820kΩ

180nF

372131254161

8

6

V

CC

56kΩ

470Ω
1/2W

2.2µF

Ω

47nF

10kΩ

1µF

15

22nF15k

11

2.2nF 2.2nF

3.9kΩ

TEA2037A

10 9

100kΩ

14

10Ω

33.2kΩ

V

CC1

1N414847Ω

Figure8 : Applicationwith flyback generatorand video ;yoke : 72mH, 40Ω

470k

220nF

100nF

2.2Ω

470k

Ω

Ω

1kΩ

470µF

100Ω

6.8Ω

2037A-09.EPS

Video

V

CC

28V

100nF151.5kΩ

1kΩ

100µF

47nF

1µF

V

CC1

180nF

560kΩ

22nF15kΩ

11

2.2nF 2.2nF

3.9kΩ

820kΩ

10 9

100kΩ

TEA2037A

33.2kΩ

V

CC1

1N4003

47µF

1N4148

372131254161

2.2Ω

100nF

8

470kΩ

470kΩ

1kΩ

6

14

V

CC

470Ω

10Ω

1/2W

680pF

2.2µF

220nF

56kΩ

100Ω

1N414847Ω

470µF

6.8Ω

2037A-10.EPS

7/9

TEA2037A

TYPICALAPPLICATION FOR HIGH FREQUENCYMONITOR

CHARACTERISTICS

• Screen: 14’’ Colour

• Framedeflectionyoke : 11mH, 7Ω,

750mA peak–to–peak

• V

=+ 14Vwith flybackgenerator

CC

• Frame flyback time : 0.6ms

• Verticalfrequency: 72Hz

• Verticalfree–runningperiod: 16ms

(adjustable)

• Horizontalfrequency: 35kHz
(adjustable)

• Line flybacktime : 5.5µs

2.2kΩ

V

14V

Line

Flyback

CC

270kΩ

100µF

Sync

47nF

10kΩ

1µF

V

CC1

Ω

470k

150nF

15

22nF15kΩ

11

6.8nF 1nF

3.9kΩ

P3

470kΩ

10 9

1000µF

TEA2037A

47kΩ

• Capturerange : ± 5µs
(@ syncpulse = 4.7µs)

• Input signal : negative TTL sync(line + frame)

• Dissipatedpower : 1.4W

(heatsinkrequired)

• Adjustments:

• Verticalamplitude

• VerticalLinearity

• Vertical frequency

• Horizontalfrequency

1N4002

47µF

1N4148

372131254161

8

Frame Yoke

11mH/7Ω

330nF

P1

47kΩ

68kΩ

100Ω

39kΩ

6

14

680pF

V

CC

22kΩ

P4

22kΩ

220Ω

10Ω

1/2W

2.2µF

18kΩ

Line
Darlington

100nF

2.2Ω

180Ω

2200µF

1Ω

8/9

1N414847

V

CC1

Ω

2037A-11.EPS

PACKAGE MECHANICALDATA

16 PINS- PLASTICPOWERDIP

TEA2037A

Dimensions

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

Millimeters Inches

a1 0.51 0.020

B 0.85 1.40 0.033 0.055

b 0.50 0.020

b1 0.38 0.50 0.015 0.020

D 20.0 0.787
E 8.80 0.346

e 2.54 0.100

e3 17.78 0.700

F 7.10 0.280

I 5.10 0.201
L 3.30 0.130
Z 1.27 0.050

Information furnished isbelieved to be accurate and reliable. However,SGS-THOMSON Microelectronics assumes no responsibility
for the consequences ofuse of such information nor forany infringement of patentsor other rights of third parties which may result
from itsuse. No licence isgranted by implicationor otherwiseunder anypatent or patent rightsof 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 ascritical components in life
support devices or systems without express written approval of SGS-THOMSON Microelectronics.

 1996 SGS-THOMSON Microelectronics - All Rights Reserved

Purchase of I

2

I

C Patent. Rights to usethese components in aI2C system, is granted provided thatthe system conforms to

Australia - Brazil - Canada - China - France - Germany -Hong Kong- Italy- Japan -Korea - Malaysia - Malta- Morocco

The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.

2

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

2

the I

C Standard Specificationsas defined by Philips.

SGS-THOMSON Microelectronics GROUP OF COMPANIES

PM-DIP16.EPS

DIP16PW.TBL

9/9