TDA4857 데이터 시트보기 (PDF) - Philips Electronics

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TDA4857

I2C-bus autosync deflection controller for PC monitors

Philips Electronics 

Philips Semiconductors

I2C-bus autosync deflection controller for

PC monitors

Product specification

TDA4857PS

SYMBOL

VMOIRE

PARAMETER

modulation of vertical picture

position by 1⁄2 vertical

frequency (related to 100%

vertical size)

moire cancellation off

CONDITIONS

register VMOIRE = 0;

control bit MOD = 0

register VMOIRE = 31;

control bit MOD = 0

control bit MOD = 1

MIN.

−

−

−

Vertical output stage: pins VOUT1 and VOUT2; see Fig.27

∆IVOUT(nom)(p-p)

nominal differential output

current (peak-to-peak value)

∆IVOUT = IVOUT1 − IVOUT2;

nominal settings; note 8

Io(VOUT)(max)

maximum output current at

pins VOUT1 and VOUT2

control bit VOVSCN = 1

VVOUT

δIos(vert)(max)

allowed voltage at outputs

maximum offset error of

vertical output currents

nominal settings; note 8

δIlin(vert)(max)

maximum linearity error of

vertical output currents

nominal settings; note 8

0.76

0.54

0

−

−

EW drive output

EW DRIVE OUTPUT STAGE: PIN EWDRV; see Figs 7 to 10

Vconst(EWDRV)

bottom output voltage at pin

EWDRV (internally stabilized)

register HPIN = 0;

register HCOR = 04;

register HTRAP = 08;

register HSIZE = 255

1.05

Vo(EWDRV)(max)

maximum output voltage

note 9

7.0

IL(EWDRV)

load current

−

TCEWDRV

temperature coefficient of

−

output signal

VHPIN(EWDRV)

horizontal pincushion voltage register HPIN = 0; note 8 −

register HPIN = 63; note 8 −

VHCOR(EWDRV)

horizontal corner correction

voltage

register HCOR = 0;

−

control bit VSC = 0; note 8

register HCOR = 31;

−

control bit VSC = 0; note 8

register HCOR = X;

−

control bit VSC = 1; note 8

VHTRAP(EWDRV)

horizontal trapezium correction register HTRAP = 15;

−

voltage

control bit VPC = 0; note 8

register HTRAP = 0;

−

control bit VPC = 0; note 8

register HTRAP = X;

−

control bit VPC = 1; note 8

VHSIZE(EWDRV)

horizontal size voltage

register HSIZE = 255;

−

note 8

register HSIZE = 0; note 8 −

TYP.

0

0.08

0

0.85

0.6

−

−

−

1.2

−

−

−

0.04

1.42

0.08

−0.64

0

−0.33

0.33

0

0.13

3.6

MAX. UNIT

−

%

−

%

−

%

0.94 mA

0.66 mA

4.2

V

±2.5 %

±1.5 %

1.35 V

−

V

±2

mA

600

10−6/K

−

V

−

V

−

V

−

V

−

V

−

V

−

V

−

V

−

V

−

V

2000 Jan 31

20

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