December 1992

9

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

centre frequency

−

31.45

−

kHz

deviation of centre frequency

−−

±3%

temperature coefficient

0

+200

+300

ϕ

relative holding/catching range

±6

±6.5

±7.3

%

external oscillator current

−0.5

−−4.3

mA

voltage at reference current input

(pin18)

2.35

2.5

2.65

V

Horizontal PLL2

Fig.6

upper clamping level of flyback input

−

5.5

−

V

lower clamping level of flyback input

−−0.75

−

V

H-flyback slicing level

−

3.0

−

V

delay between middle of sync and

−

3.0

−

%

upper control voltage limitation

−

6.2

−

V

lower control voltage limitation

−

4.8

−

V

control current

∆t/t

H

30

−−

%

Horizontal output (open-collector)

Fig.6

output voltage LOW

−−

0.3

V

−−

0.8

V

42

45

48

%

threshold to activate under voltage

protection

horizontal output off

−

5.6

−

V

horizontal output on

−

5.8

−

V

∆t

H

jitter of horizontal output

f = 31 kHz

−−

3.5

ns

f = 64 kHz

−−

1.9

ns

f = 100 kHz

−−

1.2

ns

E/W output

note 1

bottom output signal during mid-scan

(pin 11)

internally stabilized

1.05

1.2

1.35

V

top output signal during flyback

4.2

4.5

4.8

V

temperature coefficient of output signal

−−

250

E/W amplitude adjustment (parabola)

Fig.7

input voltage (pin 14)

−

5.0

−

V

adjustment current

100% parabola

−110

−120

−135

µA

typically 28% parabola

−

0

−µA

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT