Philips Semiconductors
Product specification
Economy Autosync Deflection Controller
(EASDC)
TDA4858
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Vertical oscillator (oscillator frequency in application without adjustment of free-running frequency fv(o)
)
fV
free-running frequency
RVREF = 22 kΩ;
CVCAP = 100 nF
40
50
−
42
−
43.3
110
−
Hz
Hz
V
fv(o)
vertical frequency catching
range
constant amplitude;
notes 6, 7 and 8
VVREF
td(scan)
voltage at reference input for
vertical oscillator
3.0
300
delay between trigger pulse
and start of ramp at VCAP
(pin 24) (width of vertical
blanking pulse)
240
360
µs
IVAGC
control currents of amplitude
control
±120
±200
±300
µA
CVAGC
external capacitor at VAGC
(pin 22)
−
−
150
nF
Differential vertical current outputs
ADJUSTMENT OF VERTICAL SIZE (see Figs 3 to 8) [VAMP (PIN 18)]
∆VAMP
vertical size adjustment range IVAMP = 0; note 9
(referenced to nominal vertical
size)
−
−
60
−
−
%
%
I
VAMP = −135 µA; note 9
100
IVAMP
input current for maximum
amplitude (100%)
−110
−120
0
−135
µA
µA
V
input current for minimum
amplitude (60%)
−
−
−
−
Vref(VAMP)
reference voltage at input
5.0
ADJUSTMENT OF VERTICAL SHIFT (see Figs 3 to 8) [VPOS (PIN 17)]
∆VPOS
vertical shift adjustment range
(referenced to 100% vertical
size)
I
I
VPOS = −135 µA; note 9
−
−
−11.5
−
−
%
%
VPOS = 0; note 9
+11.5
IVPOS
input current for maximum
shift-up
−110
−120
−135
µA
µA
input current for maximum
shift-down
−
0
−
Vref(VPOS)
Voff(VPOS)
reference voltage at input
−
5.0
−
V
V
vertical shift is centred if VPOS
(pin 17) is forced to ground
0
−
0.1
1997 Oct 27
17
NXP [ NXP ]
