TDA4857 데이터 시트보기 (PDF) - Philips Electronics
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TDA4857 Datasheet PDF : 56 Pages
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Philips Semiconductors
I2C-bus autosync deflection controller for
PC monitors
Product specification
TDA4857PS
SYMBOL
PARAMETER
CONDITIONS
MIN.
Differential vertical current outputs
ADJUSTMENT OF VERTICAL SIZE INCLUDING VGA AND EHT COMPENSATION; see Fig.3
VSIZE
vertical size without VGA
overscan (referenced to
nominal vertical size)
register VSIZE = 0;
−
bit VOVSCN = 0; note 8
register VSIZE = 127;
−
bit VOVSCN = 0; note 8
VSIZEVGA
vertical size with VGA
overscan (referenced to
nominal vertical size)
register VSIZE = 0;
bit VOVSCN = 1; note 8
register VSIZE = 127;
bit VOVSCN = 1; note 8
−
115.9
VSMODEHT
EHT compensation on vertical IVSMOD = 0
−
size via VSMOD (pin 21)
IVSMOD = −120 µA
−
(referenced to 100% vertical
size)
Ii(VSMOD)
input current (pin 21)
VSMOD = 0
−
VSMOD = −7%
−
Ri(VSMOD)
input resistance
300
Vref(VSMOD)
reference voltage at input
−
fro(VSMOD)
roll-off frequency (−3 dB)
IVSMOD = −60 µA
1
+ 15 µA (RMS)
ADJUSTMENT OF VERTICAL POSITION; see Fig.4
VPOS
vertical position (referenced to register VPOS = 0;
−
100% vertical size)
control bit VPC = 0
register VPOS = 127;
−
control bit VPC = 0
register VPOS = X;
−
control bit VPC = 1
ADJUSTMENT OF VERTICAL LINEARITY; see Fig.5
VLIN
vertical linearity (S-correction) register VLIN = 0;
−
control bit VSC = 0; note 8
register VLIN = 15; control −
bit VSC = 0; note 8
register VLIN = X;
−
control bit VSC = 1; note 8
δVLIN
symmetry error of S-correction maximum VLIN
−
ADJUSTMENT OF VERTICAL LINEARITY BALANCE; see Fig.6
VLINBAL
vertical linearity balance
(referenced to 100% vertical
size)
register VLINBAL = 0;
−3.3
control bit VLC = 0; note 8
register VLINBAL = 15; 1.7
control bit VLC = 0; note 8
register VLINBAL = X;
−
control bit VLC = 1; note 8
TYP.
60
100
70
116.8
0
−7
0
−120
−
5.0
−
−11.5
11.5
0
2
46
0
−
−2.5
2.5
0
MAX. UNIT
−
%
−
%
−
%
117.7 %
−
%
−
%
−
µA
−
µA
500
Ω
−
V
−
MHz
−
%
−
%
−
%
−
%
−
%
−
%
±0.7 %
−1.7 %
3.3
%
−
%
2000 Jan 31
19
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