TDA4850 datasheet(10/20 Pages) PHILIPS

Nome de Peças	TDA4850

Descrição Electrónicos	Horizontal and vertical deflection controller for VGA/XGA and multi-frequency monitors

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Fabricante Electrônico	PHILIPS [NXP Semiconductors]

Página de início	http://www.nxp.com

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10 / 20 page

1997 Jun 05

10

Philips Semiconductors

Product speciﬁcation

Horizontal and vertical deﬂection controller

for VGA/XGA and multi-frequency monitors

TDA4850

Horizontal output (open-collector); see Fig.3

V3

output voltage LOW

I3 =20mA

−−

0.3

V

I3 =60mA

−−

0.8

V

tp/tH

tH duty cycle

42

45

48

%

VP

threshold to activate too low supply voltage

protection

horizontal output off

−

5.3

−

V

horizontal output on

−

5.6

−

V

Horizontal clamping/blanking generator output; see Fig.3

V8

output voltage LOW

H and V scanning

−−

0.9

V

blanking output voltage

internal V blanking

1.8

2.1

2.4

V

external H blanking

1.8

2.1

2.4

V

clamping output voltage

H-sync on pin 9

3.5

3.9

4.3

V

I8

internal sink current for all output levels

H and V scanning

2.3

2.9

3.5

mA

t8

clamping pulse start

with end of H-sync

tclp

clamping pulse width

0.8

1.0

1.2

µs

S

steepness of rise and fall times

−

40

−

ns/V

Vertical oscillator (Vref = 6.25 V)

fo

vertical free-running frequency

R15 =22kΩ;

C16 = 0.1 µF

40

42

43.3

Hz

fV

nominal vertical sync range

no fo adjustment

50

−

110

Hz

V15

voltage on pin 15

R15 =22kΩ

2.8

3.0

3.2

V

td

delay between sync pulse and start of

vertical scan

measured on pin 8

in VGA/XGA mode, activated by an

external resistor on pin 7

500

575

650

µs

in multi-frequency mode

V7 < 50 mV

240

300

360

µs

I12

control current for amplitude control

−±200

−µA

C12

capacitor for amplitude control

−−

0.33

µF

Vertical differential output; see Fig.4

Io

differential output current between

pins 5 and 6 (peak-to-peak value)

mode 3; I13 > −135 µA;

R15 =22kΩ

0.9

1.0

1.1

mA

maximum offset current error

Io =1mA

−−±2.5

%

maximum linearity error

−−±1.5

%

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Nº de peça semelhante - TDA4850

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Descrição semelhante - TDA4850

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More results

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Nº de peça semelhante - TDA4850

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