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
Automatic polarity correction for vertical sync
tVSYNC(max)
maximum width of vertical sync
pulse
td(VPOL)
delay for changing polarity
Video clamping/vertical blanking output: pin CLBL
tclamp(CLBL)
Vclamp(CLBL)
TCclamp
STPSclamp
td(HSYNCt-CLBL)
tclamp(max)
td(HSYNCl-CLBL)
tclamp(max)
Vblank(CLBL)
tblank(CLBL)
TCblank
Vscan(CLBL)
TCscan
Isink(CLBL)
IL(CLBL)
width of video clamping pulse
top voltage level of video
clamping pulse
temperature coefficient of
Vclamp(CLBL)
steepness of slopes for
clamping pulse
delay between trailing edge of
horizontal sync and start of
video clamping pulse
maximum duration of video
clamping pulse referenced to
end of horizontal sync
delay between leading edge of
horizontal sync and start of
video clamping pulse
maximum duration of video
clamping pulse referenced to
end of horizontal sync
top voltage level of vertical
blanking pulse
width of vertical blanking pulse
at pins CLBL and HUNLOCK
temperature coefficient of
Vblank(CLBL)
output voltage during vertical
scan
temperature coefficient of
Vscan(CLBL)
internal sink current
external load current
measured at VCLBL = 3 V
RL = 1 MΩ; CL = 20 pF
clamping pulse triggered
on trailing edge of
horizontal sync;
control bit CLAMP = 0;
measured at VCLBL = 3 V
clamping pulse triggered
on leading edge of
horizontal sync;
control bit CLAMP = 1;
measured at VCLBL = 3 V
notes 1 and 2
control bit VBLK = 0
control bit VBLK = 1
ICLBL = 0
MIN. TYP. MAX. UNIT
−
−
0.45 −
400 µs
1.8
ms
0.6
0.7
0.8
µs
4.32 4.75 5.23 V
−
4
−
mV/K
−
50
−
ns/V
−
130 −
ns
−
−
1.0
µs
−
300 −
ns
−
−
0.15 µs
1.7
1.9
2.1
V
220 260 300 µs
305 350 395 µs
−
2
−
mV/K
0.59 0.63 0.67 V
−
−2
−
mV/K
2.4
−
−
−
−
mA
−3.0 mA
2003 Sep 30
16
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