TDA4841 datasheet(17/60 Pages) PHILIPS

17 / 60 page

1999 Oct 25

Philips Semiconductors

Product speciﬁcation

I2C-bus autosync deﬂection controller for

PC monitors

TDA4841PS

Horizontal oscillator: pins HCAP and HREF

ffr(H)

free-running frequency without

PLL1 action (for testing only)

RHBUF = ∞;

RHREF = 2.4 kΩ;

CHCAP = 10 nF; note 3

30.53

31.45

32.39

kHz

∆f

fr(H)

spread of free-running

frequency (excluding spread of

external components)

−−±3.0

TCfr

temperature coefﬁcient of

free-running frequency

−100

+100

10−6/K

fH(max)

maximum oscillator frequency

−−

130

kHz

VHREF

voltage at input for reference

current

2.43

2.55

2.68

Unlock blanking detection: pin HUNLOCK

Vscan(HUNLOCK)

low-level voltage of HUNLOCK

saturation voltage in case

of locked PLL1; internal

sink current = 1 mA

−−

250

Vblank(HUNLOCK)

blanking level of HUNLOCK

IL = 0

0.9

1.1

TCblank

temperature coefﬁcient of

Vblank(HUNLOCK)

−−0.9

−

mV/K

TCsink

temperature coefﬁcient of

Isink(HUNLOCK)

−

0.15

−

%/K

Isink(int)

internal sink current

for blanking pulses;

PLL1 locked

1.4

2.0

2.6

IL(max)

maximum external load current

VHUNLOCK =1V

−−−2mA

ILI

leakage current

VHUNLOCK = 5 V in case of

unlocked PLL1 and/or

protection active

−−±5

µA

PLL1 phase comparator and frequency-locked loop: pins HPLL1 and HBUF

tW(HSYNC)(max)

maximum width of horizontal

sync pulse (referenced to line

period)

−−

tlock(HPLL1)

total lock-in time of PLL1

−

Ictrl(HPLL1)

control currents

notes 4 and 5

locked mode; level 1

−

−µA

locked mode; level 2

−

145

−µA

VHBUF

buffered f/v voltage at HBUF

(pin 27)

minimum horizontal

frequency

−

2.55

−

maximum horizontal

frequency

−

0.5

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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