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.
Horizontal oscillator: pins HCAP and HREF
ffr(H)
∆ffr(H)
free-running frequency without
PLL1 action (for testing only)
spread of free-running
frequency (excluding spread of
external components)
RHBUF = ∞;
RHREF = 2.4 kΩ;
CHCAP = 10 nF; note 3
TCfr
temperature coefficient of
free-running frequency
fH(max)
VHREF
maximum oscillator frequency
voltage at input for reference
current
30.53
−
−100
−
2.43
Unlock blanking detection: pin HUNLOCK
Vscan(HUNLOCK)
low-level voltage of HUNLOCK saturation voltage in case −
of locked PLL1; internal
sink current = 1 mA
Vblank(HUNLOCK) blanking level of HUNLOCK
IL = 0
0.9
TCblank
temperature coefficient of
−
Vblank(HUNLOCK)
TCsink
temperature coefficient of
−
Isink(HUNLOCK)
Isink(int)
internal sink current
for blanking pulses;
1.4
PLL1 locked
IL(max)
ILI
maximum external load current VHUNLOCK = 1 V
−
leakage current
VHUNLOCK = 5 V in case of −
unlocked PLL1 and/or
protection active
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)
Ictrl(HPLL1)
total lock-in time of PLL1
control currents
−
notes 4 and 5
locked mode; level 1
−
locked mode; level 2
−
VHBUF
buffered f/v voltage at HBUF minimum horizontal
−
(pin 27)
frequency
maximum horizontal
−
frequency
TYP.
31.45
−
0
−
2.55
−
1
−0.9
0.15
2.0
−
−
−
40
15
145
2.55
0.5
MAX. UNIT
32.39 kHz
±3.0 %
+100 10−6/K
130 kHz
2.68 V
250 mV
1.1
V
−
mV/K
−
%/K
2.6
mA
−2
mA
±5
µA
25
%
80
ms
−
µA
−
µA
−
V
−
V
2003 Sep 30
17
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