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TDA4841PS Datasheet, PDF (20/60 Pages) NXP Semiconductors – I2C-bus autosync deflection controller for PC monitors
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Philips Semiconductors
I2C-bus autosync deflection controller for
PC monitors
Product specification
TDA4841PS
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Vertical oscillator (oscillator frequency in application without adjustment of free-running frequency ffr(V))
ffr(V)
free-running frequency
RVREF = 22 kΩ;
40
42
43.3 Hz
CVCAP = 100 nF
fcr(V)
vertical frequency catching
constant amplitude; note 7 50
−
160 Hz
range
VVREF
voltage at reference input for
vertical oscillator
−
3.0
−
V
td(scan)
delay between trigger pulse
and start of ramp at VCAP
(pin 24) (width of vertical
blanking pulse)
control bit VBLK = 0
control bit VBLK = 1
220 260 300 µs
305 350 395 µs
IVAGC
amplitude control current
control bit AGCDIS = 0
control bit AGCDIS = 1
±120 ±200 ±300 µA
−
0
−
µA
CVAGC
external capacitor at VAGC
(pin 22)
150 −
220 nF
Differential vertical current outputs
ADJUSTMENT OF VERTICAL SIZE INCLUDING VGA AND EHT COMPENSATION; see Figs 3 to 7
VGAIN
vertical size without VGA
overscan (referenced to
nominal vertical size)
register VGAIN = 0;
−
register VSIZE = 127;
bit VOVSCN = 0; note 8
register VGAIN = 63;
−
register VSIZE = 127;
bit VOVSCN = 0; note 8
VSIZE
vertical size without VGA
overscan (referenced to
nominal vertical size)
register VSIZE = 0;
−
register VGAIN = 63;
bit VOVSCN = 0; note 8
register VSIZE = 127;
−
register VGAIN = 63;
bit VOVSCN = 0; note 8
VSIZEVGA
vertical size with VGA overscan register VSIZE = 0;
−
(referenced to nominal vertical register VGAIN = 63;
size)
bit VOVSCN = 1; note 8
register VSIZE = 127;
register VGAIN = 63;
bit VOVSCN = 1; note 8
115.9
VSMOD
EHT compensation on vertical Ii(VSMOD) = 0
−
size via VSMOD (pin 21)
Ii(VSMOD) = −120 µA
−
(referenced to 100% vertical
size)
Ii(VSMOD)
input current (pin 21)
VSMOD = 0
−
VSMOD = −7%
−
Ri(VSMOD)
Vref(VSMOD)
fro(VSMOD)
input resistance
reference voltage at input
roll-off frequency (−3 dB)
300
−
Ii(VSMOD) = −60 µA + 15 µA 1
(RMS)
70
100
60
100
70
116.8
0
−7
0
−120
−
5.0
−
−
−
−
−
−
117.7
−
−
−
−
500
−
−
%
%
%
%
%
%
%
%
µA
µA
Ω
V
MHz
1999 Oct 25
20
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