TDA4856 데이터 시트보기 (PDF) - Philips Electronics
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TDA4856 Datasheet PDF : 58 Pages
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Philips Semiconductors
I2C-bus autosync deflection controller for
PC monitors
Product specification
TDA4856
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
TRACKING OF EWDRV OUTPUT SIGNAL WITH HORIZONTAL FREQUENCY PROPORTIONAL VOLTAGE
fH(MULTI)
horizontal frequency range for
tracking
15
−
80
kHz
VPAR(EWDRV)
parabola amplitude at EWDRV IHREF = 1.052 mA;
−
0.72 −
V
(pin 11)
fH = 31.45 kHz; control bit
FHMULT = 1; note 10
IHREF = 2.341 mA;
−
1.42 −
V
fH = 70 kHz; control bit
FHMULT = 1; note 10
function disabled; control −
1.42 −
V
bit FHMULT = 0; note 10
LEEWDRV
linearity error of horizontal
frequency tracking
−
−
8
%
Output for asymmetric EW corrections: pin ASCOR
VHPARAL(ASCOR) vertical sawtooth voltage for
register HPARAL = 0;
−
−0.825 −
V
EW parallelogram correction note 8
register HPARAL = 63;
−
0.825 −
V
note 8
register HPARAL = 32;
−
0.05 −
V
note 8
VHPINBAL(ASCOR) vertical parabola for pin
unbalance correction
register HPINBAL = 0;
−
−1.0 −
V
note 8
register HPINBAL = 63; −
1.0
−
V
note 8
register HPINBAL = 32; −
0.05 −
V
note 8
Vo(ASCOR)(max)(p-p) maximum output voltage swing
(peak-to-peak value)
−
4
−
V
Vo(ASCOR)(max)
Vc(ASCOR)
Vo(ASCOR)(min)
Io(ASCOR)(max)
Isink(ASCOR)(max)
maximum output voltage
centre voltage
minimum output voltage
maximum output current
maximum output sink current
Vo(ASCOR) ≥ 1.9 V
Vo(ASCOR) ≥ 1.9 V
−
6.5
−
V
−
4.0
−
V
−
1.9
−
V
−
−1.5 −
mA
−
50
−
µA
Focus section: pin FOCUS; see Figs 15 and 28
tprecor
pre-correction of phase for
register HFOCAD = 0
−
300 −
ns
horizontal focus parabola
register HFOCAD = 1
−
350 −
ns
register HFOCAD = 2
−
400 −
ns
register HFOCAD = 3
−
450 −
ns
tW(hfb)(min)
minimum width of horizontal
flyback pulse
operation without
pre-correction
1.9
−
−
µs
−
7.5
−
µs
tW(hfb)(max)
maximum width of horizontal
flyback pulse
−
−
5.5
µs
2003 Sep 30
23
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