December 1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller
for autosync monitors

TDA4852

FEATURES

Low jitter

All adjustments DC-controllable

Alignment-free oscillators

Sync separators for video or horizontal and vertical TTL
sync levels regardless of polarity

Horizontal oscillator with PLL1 for sync and PLL2 for
flyback

Constant vertical and E/W amplitude in autosync
operation

DC-coupling to vertical power amplifier

Internal supply voltage stabilization with excellent ripple
rejection to ensure stable geometrical adjustments

GENERAL DESCRIPTION

The TDA4852 is a monolithic integrated circuit for
economical solutions in autosync monitors. The IC
incorporates the complete horizontal and vertical small
signal processing. In conjunction with TDA4860/61/65, or
TDA8351 (vertical output circuits) the ICs offer an
extremely advanced system solution.

QUICK REFERENCE DATA

ORDERING INFORMATION

Note

1. SOT146-1; 1996 November 27.

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

positive supply voltage (pin 1)

9.2

supply current

i sync

AC-coupled composite video signal with negative-going sync
(peak-to-peak value, pin 9)

sync slicing level

120

DC-coupled TTL-compatible horizontal sync signal
(peak-to-peak value, pin 9)

1.7

slicing level

1.2

1.4

1.6

DC-coupled TTL-compatible vertical sync signal
(peak-to-peak value, pin 10)

1.7

slicing level

1.2

1.4

1.6

o V

vertical differential output current (peak-to-peak value, pins 5 and 6)

o H

horizontal sink output current on pin 3

amb

operating ambient temperature range

+70

EXTENDED

TYPE NUMBER

PACKAGE

PINS

PIN

POSITION

MATERIAL

CODE

TDA4852

DIL

plastic

SOT146

(1)

December 1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller
for autosync monitors

TDA4852

PINNING

SYMBOL

PIN

DESCRIPTION

positive supply voltage

FLB

horizontal flyback input

HOR

horizontal output

GND

ground (0 V)

VERT1

vertical output 1; negative-going sawtooth

VERT2

vertical output 2; positive-going sawtooth

n.c.

not connected

CLBL

clamping/blanking pulse output

HVS

horizontal sync/video input

vertical sync input

E/W output (parabola to driver stage)

capacitor for amplitude control

vertical amplitude adjustment input

E/W amplitude adjustment input (parabola)

VOS

vertical oscillator resistor

VOS

vertical oscillator capacitor

PLL1

PLL1 phase

HOS

horizontal oscillator resistor

HOS

horizontal oscillator capacitor

PLL2

PLL2 phase

Fig.2 Pin configuration.

December 1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller
for autosync monitors

TDA4852

FUNCTIONAL DESCRIPTION

Horizontal sync separator and
polarity correction

An AC-coupled video signal or a
DC-coupled TTL sync signal (H only
or composite sync) is input on pin 9.
Video signals are clamped with top
sync on 1.28 V, and are sliced at
1.4 V. This results in a fixed absolute
slicing level of 120 mV related to top
sync. DC-coupled TTL sync signals
are also sliced at 1.4 V, however with
the clamping circuit in current
limitation. The polarity of the
separated sync is detected by internal
integration of the signal, then the
polarity is corrected. The corrected
sync is input signal for the vertical
sync integrator and the PLL1 stage.

Vertical sync separator, polarity
correction and vertical sync
integrator

DC-coupled vertical TTL sync signals
may be applied to pin 10. They are
sliced at 1.4 V. The polarity of the
separated sync is detected by internal
integration, then the polarity is
corrected. If pin 10 is not used, it must
be connected to ground. The
separated V

i sync

signal from pin 10, or

the integrated composite sync signal
from pin 9 (TTL or video) triggers
directly the vertical oscillator.

Clamping and V-blanking
generator

A combined clamping and V-blanking
pulse is available on pin 8 (suitable for
the video pre-amplifier TDA4881).
The lower level of 1.9 V is the
blanking signal derived from the
vertical blanking pulse from the
internal vertical oscillator.
Vertical blanking starts with vertical
sync and stops at the begin of vertical
scan. By this, an optimum blanking is
achieved. The upper level of 5.4 V is
the horizontal clamping pulse with an
internally fixed pulse width of 0.8

A monoflop, which is triggered by the
trailing edge of the horizontal sync
pulse, generates this pulse. If
composite sync is applied, one
clamping pulse per H-period is
generated during V-sync. The phase
of the clamping pulse may change
during V-sync (see Fig.8).

PLL1 phase detector

The phase detector is a standard type
using switched current sources. The
middle of the sync is compared with a
fixed point of the oscillator sawtooth
voltage. The PLL filter is connected to
pin 17. If composite sync is applied,
the disturbed control voltage is
corrected during V-sync (see Fig.8).

Horizontal oscillator

This oscillator is of the relaxation type
and requires a fixed capacitor of
10 nF at pin 19. By changing the
current into pin 18 the whole
frequency range from 13 to 100 kHz
can be covered. The current can be
generated either by a frequency to
voltage converter or by a resistor.
A frequency adjustment may also be
added if necessary.
The PLL1 control voltage at pin 17
modulates via a buffer stage the
oscillator thresholds. A high DC-loop
gain ensures a stable phase
relationship between horizontal sync
and line flyback pulses.

PLL2 phase detector

This phase detector is similar to the
PLL1 phase detector. Line flyback
signals (pin 2) are compared with a
fixed point of the oscillator sawtooth
voltage. Delays in the horizontal
deflection circuit are compensated by
adjusting the phase relationship
between horizontal sync and
horizontal output pulses. A certain
amount of phase adjustment is
possible by injecting a DC current
from an external source into the PLL2
filter capacitor at pin 20.

Horizontal driver

This open-collector output stage
(pin 3) can directly drive an external
driver transistor. The saturation
voltage is less than 300 mV at 20 mA.
To protect the line deflection
transistor, the horizontal output stage
does not conduct for
V

6.4 V (pin 1).

Vertical oscillator and amplitude
control

This stage is designed for fast
stabilization of the vertical amplitude
after changes in sync conditions. The
free-running frequency f

determined by the values of R

VOS

and

VOS

. The recommended values

should be altered marginally only to
preserve the excellent linearity and
noise performance. The vertical drive
currents I

and I

are in relation to the

value of R

VOS

. Therefore, the

oscillator frequency must be
determined only by C

VOS

on pin 16.

To achieve a stabilized amplitude the
free-running frequency f

(without

adjustment) must be lower than the
lowest occurring sync frequency. The
following contributions can be
assumed:

(for 50 to 110 Hz application)

minimum frequency
offset between f

and the

lowest trigger frequency

10%

spread of IC

spread of R (22 k

)

spread of C (0.1

19%

10.8

VOS

-----------------------------------------------------

Result: f

1.19

----------- Hz = 42 Hz

December 1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller
for autosync monitors

TDA4852

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134)

Note to the Limiting Values

1. Equivalent to discharging a 200 pF capacitor through a 0

series resistor.

THERMAL RESISTANCE

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

supply voltage (pin 1)

0.5

voltage on pin 3

0.5

voltage on pin 8

0.5

voltage on pins 5, 6, 9, 10, 13, 14 and 18

0.5

6.5

current on pin 2

current on pin 3

100

current on pin 8

stg

storage temperature range

+50

amb

operating ambient temperature range

maximum junction temperature

+150

ESD

electrostatic handling for all pins (note 1)

400

SYMBOL

PARAMETER

THERMAL RESISTANCE

th j-a

from junction to ambient in free air

65 K/W

December 1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller
for autosync monitors

TDA4852

CHARACTERISTICS

= 12 V; T

amb

=+25

C; measurements taken in Fig.3 unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

positive supply voltage (pin 1)

9.2

supply current

1.05 mA

3.388 mA

Internal reference voltage

ref

internal reference voltage

6.0

6.25

6.5

temperature coefficient

amb

= +20 to +100

PSRR

power supply ripple rejection

f = 1 kHz sinewave

f = 1 MHz sinewave

supply voltage (pin 1) to ensure all
internal reference voltages

9.2

Composite sync input (AC-coupled)

= 5 V

i sync

sync amplitude of video input signal
(pin 9)

sync on green

300

top sync clamping level

1.1

1.28

1.5

slicing level above top sync level

= 50

120

150

allowed source resistance for 7%
duty factor

i sync

200 mV

1.5

differential input resistance

during sync

charging current of coupling capacitor

1.5 V

1.3

int

vertical sync integration time to
generate vertical trigger pulse

= 31 kHz;

1.050 mA

= 64 kHz;

2.169 mA

3.5

6.5

= 100 kHz;

3.388 mA

2.5

3.4

4.5

Horizontal sync input (DC-coupled, TTL-compatible)

i sync

sync input signal
(peak-to-peak value, pin 9)

1.7

slicing level

1.2

1.4

1.6

minimum pulse width

700

, t

rise time and fall time

500

input current

= 0.8 V

200

= 5.5 V

Automatic horizontal polarity switch

H-sync on pin 9

p H

horizontal sync pulse width related to t

(duty factor for automatic polarity
correction)

delay time for changing sync polarity

0.3

1.8

December 1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller
for autosync monitors

TDA4852

Vertical sync input (DC-coupled, TTL-compatible)

V-sync on pin 10

i sync

sync input signal
(peak-to-peak value, pin 10)

1.7

slicing level

1.2

1.4

1.6

input current

5.5 V

p V

maximum vertical sync pulse width for
automatic vertical polarity switch

300

Horizontal clamping / blanking generator output

Fig.6

output voltage LOW

0.9

blanking output voltage

internal V blanking

1.6

1.9

2.2

clamping output voltage

H-sync on pin 9

5.15

5.4

5.65

internal sink current for all output levels

H and V scanning

2.3

2.9

3.5

external load current

3.0

clamping pulse start

with end of H-sync

clp

clamping pulse width

= 3 V

0.6

0.8

1.0

steepness of rise and fall times

ns/V

Vertical oscillator

ref

= 6.25 V

vertical free-running frequency

= 22 k

;

= 0.1

nominal vertical sync range

no f

adjustment

110

voltage on pin 15

= 22 k

2.8

3.0

3.2

delay between sync pulse and start of
vertical scan

measured on pin 8

240

300

360

control current for amplitude control

200

capacitor for amplitude control

0.18

Vertical differential output

Fig.7

differential output current between
pins 5 and 6 (peak-to-peak value)

mode 3; I

135

= 22 k

0.9

1.0

1.1

maximum offset-current error

= 1 mA

2.5

maximum linearity error

1.5

Vertical amplitude adjustment (in percentage of output signal)

input voltage

5.0

adjustment current

o max

(100%)

110

120

135

o min

(typically 58%)

Horizontal comparator PLL1

upper control voltage limitation

5.9

lower control voltage limitation

5.1

control current

Fig.6

0.083I

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

December 1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller
for autosync monitors

TDA4852

Note to the characteristics

1. Parabola amplitude does not track with vertical amplitude adjustment. Tracking can be achieved by a resistor from

vertical amplitude potentiometer to pin 14.

Horizontal oscillator

osc

centre frequency

= 2.4 k

(pin 18);

= 10 nF (pin 19)

31.45

kHz

deviation of centre frequency

temperature coefficient

+200

+300

relative holding/catching range

6.5

7.3

external oscillator current

0.5

4.3

voltage at reference current input
(pin18)

2.35

2.5

2.65

Horizontal PLL2

Fig.6

upper clamping level of flyback input

= 6 mA

5.5

lower clamping level of flyback input

1 mA

0.75

H-flyback slicing level

3.0

delay between middle of sync and
middle of H-flyback related to t

3.0

upper control voltage limitation

6.2

lower control voltage limitation

4.8

control current

0.083I

t/t

PLL2 control range related to t

Horizontal output (open-collector)

Fig.6

output voltage LOW

= 20 mA

0.3

= 60 mA

0.8

duty factor

threshold to activate under voltage
protection

horizontal output off

5.6

horizontal output on

5.8

jitter of horizontal output

f = 31 kHz

3.5

f = 64 kHz

1.9

f = 100 kHz

1.2

E/W output

note 1

bottom output signal during mid-scan
(pin 11)

internally stabilized

1.05

1.2

1.35

top output signal during flyback

4.2

4.5

4.8

temperature coefficient of output signal

250

E/W amplitude adjustment (parabola)

Fig.7

input voltage (pin 14)

5.0

adjustment current

100% parabola

110

120

135

typically 28% parabola

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

December

1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller

for autosync monitors

TDA4852

This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in

white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in

white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...

Fig.8

Pulse diagram for composite sync applications (showing reduced influence of V-sync on H-phase and drive pulses for F/V converters).

(1) clamp pulses triggered by H-sync

(2) clamp pulses triggered by leading edge of V-trigger pulse

(3) clamp pulses triggered by horizontal oscillator

(4) during V-trigger pulse clamp pulses are generated internally

(5) control voltage of PLL1 is corrected during V-trigger pulse

December 1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller
for autosync monitors

TDA4852

PACKAGE OUTLINE

UNIT

max.

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION

ISSUE DATE

IEC

JEDEC

EIAJ

inches

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

SOT146-1

92-11-17
95-05-24

min.

max.

1.73
1.30

0.53
0.38

0.36
0.23

26.92
26.54

6.40
6.22

3.60
3.05

0.254

2.54

7.62

8.25
7.80

10.0

8.3

2.0

4.2

0.51

3.2

0.068
0.051

0.021
0.015

0.014
0.009

1.060
1.045

0.25
0.24

0.14
0.12

0.01

0.10

0.30

0.32
0.31

0.39
0.33

0.078

0.17

0.020

0.13

SC603

(e )

seating plane

pin 1 index

10 mm

scale

Note

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

(1)

DIP20: plastic dual in-line package; 20 leads (300 mil)

SOT146-1

December 1992

Philips Semiconductors

Preliminary specification

Horizontal and vertical deflection controller
for autosync monitors

TDA4852

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
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.

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

stg 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.

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.

DEFINITIONS

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.

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.

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.

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: TDA4852

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: TDA4852