1997 Jun 05

11

Philips Semiconductors

Product specification

Horizontal and vertical deflection controller

for VGA/XGA and multi-frequency monitors

TDA4850

Notes to the Characteristics

1.

2. Parabola amplitude tracks with mode-dependent vertical amplitude but not with vertical amplitude adjustment.

Tracking can be achieved by a resistor from vertical amplitude potentiometer to pin 14.

Vertical amplitude adjustment (in percent of output signal)

input voltage

−

5.0

−

V

adjustment current

−110

−120

−135

µA

−

0

−µA

∆I

VGA mode-dependent pre-settings

activated by an external resistor on pin 7

note 1; see Table 2

mode 1

116.1

116.8

117.5

%

mode 2

102.0

102.2

102.5

%

mode 3

−

100

−

%

mode 4

−

100

−

%

multi-frequency operation (VGA operation

disabled)

−

100

−

%

E/W output; note 2

bottom output signal during mid-scan

(pin 11)

internally stabilized

1.05

1.2

1.35

V

top output signal during flyback

4.1

4.35

4.6

V

TC

temperature coefficient of output signal

−−

250

E/W amplitude adjustment (parabola); see Fig.4

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