TDA4856 Datasheet, PDF (21/56 Pages) NXP Semiconductors – I2C-bus autosync deflection controller for PC monitors

Philips Semiconductors
I²C-bus autosync deflection controller for
PC monitors
Product specification
TDA4856
SYMBOL
PARAMETER
CONDITIONS
MIN.
f_ro(VSMOD)
roll-off frequency (−3 dB)
I_VSMOD = −60 µA
1
+ 15 µA (RMS value)
ADJUSTMENT OF VERTICAL POSITION (see Fig.5)
VOFFS
VPOS
vertical position (referenced to register VOFFS = 0
−
100% vertical size)
register VOFFS = 15
−
register VOFFS = 8
−
vertical position (referenced to register VPOS = 0
−
100% vertical size)
register VPOS = 127
−
register VPOS = 64
−
ADJUSTMENT OF VERTICAL LINEARITY; see Fig.6
VLIN
δVLIN
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
symmetry error of S-correction maximum VLIN
−
ADJUSTMENT OF VERTICAL LINEARITY BALANCE; see Fig.7
VLINBAL
vertical linearity balance
(referenced to 100% vertical
size)
register VLINBAL = 0;
note 8
register VLINBAL = 15;
note 8
−1.85
0.95
register VLINBAL = 8;
−
note 8
VMOIRE
modulation of vertical picture register VMOIRE = 0;
−
position by ¹â„₂ vertical
control bit MOD = 0
frequency (related to 100%
register VMOIRE = 63;
−
vertical size)
control bit MOD = 0
moire cancellation off
control bit MOD = 1
−
Vertical output stage: pins VOUT1 and VOUT2; see Fig.27
∆I_{VOUT(nom)(p-p)}
nominal differential output
current (peak-to-peak value)
∆I_VOUT = I_VOUT1 − I_VOUT2; 0.76
nominal settings; note 8
I_o(VOUT)(max)
maximum output current at
pins VOUT1 and VOUT2
control bit VOVSCN = 1 0.54
V_VOUT
δI_{os(vert)(max)}
allowed voltage at outputs
maximum offset error of
vertical output currents
0
nominal settings; note 8 −
δI_{lin(vert)(max)}
maximum linearity error of
vertical output currents
nominal settings; note 8 −
TYP.
−
−4
4
0.25
−11.5
11.5
0.09
2
46
0
−
−1.40
1.40
0.08
0
0.08
0
0.85
0.6
−
−
−
MAX. UNIT
−
MHz
−
%
−
%
−
%
−
%
−
%
−
%
−
%
−
%
−
%
±0.7 %
−0.95 %
1.85 %
−
%
−
%
−
%
−
%
0.94 mA
0.66 mA
4.2
V
±2.5 %
±1.5 %
1999 Jul 13
21