tda4855 NXP Semiconductors, tda4855 Datasheet - Page 16

• Manufacturer Part Number: tda4855
• Description: Autosync Deflection Controller Asdc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1996 Jul 18
H
V
I
V
Output stage for line driver pulses [HDRV (pin 7)]
O
V
I
A
t
X-ray protection [XRAY (pin 2)]
V
t
R
V
Vertical oscillator (oscillator frequency in application without adjustment of free-running frequency f
f
f
V
t
I
C
HFLB
leakage(HDRV)
HDRV(OFF)
W(XRAY)
V
v(o)
d(scan)
VAGC
HFLB
HFLB
HDRV
UTOMATIC VARIATION OF DUTY FACTOR
XRAY
RESET(VCC)
VREF
Autosync Deflection Controller (ASDC)
ORIZONTAL FLYBACK INPUT
I(XRAY)
VAGC
PEN COLLECTOR OUTPUT STAGE
SYMBOL
/t
H
positive clamping level
negative clamping level
positive clamping current
negative clamping current
slicing level
saturation voltage
output leakage current
relative t
output; measured at
V
is determined by the relation
I
slicing voltage level
minimum width of trigger pulse
input resistance at XRAY
(pin 2)
supply voltage for reset of
X-ray latch
free-running frequency
vertical frequency catching
range
voltage at reference input for
vertical oscillator
delay between trigger pulse
and start of ramp at VCAP
(pin 24) (width of vertical
blanking pulse)
control currents of amplitude
control
external capacitor at VAGC
(pin 22)
HREF
HDRV
/I
VREF
= 3 V; HDRV duty factor
OFF
PARAMETER
[HFLB (
time of HDRV
PIN
1)]
I
I
I
I
V
I
f
I
f
I
f
V
V
R
C
constant amplitude;
notes 8, 9 and 10
VGA presets active
VGA presets disabled
HFLB
HFLB
HDRV
HDRV
HDRV
H
HDRV
H
HDRV
H
HDRV
XRAY
XRAY
VREF
VCAP
= 31.45 kHz; see Fig.9
= 57 kHz; see Fig.9
= 90 kHz; see Fig.9
= 5 mA
= 1 mA
16
CONDITIONS
= 20 mA
= 60 mA
= 20 mA;
= 20 mA;
= 20 mA;
= 22 k ;
= 16 V
= 100 nF
6.38 V + V
6.38 V + V
BE
BE
42
45
46.6
6.14
10
500
40
50
500
240
120
MIN.
5.5
2.8
45
46.3
48
6.38
5
5.6
42
3.0
575
300
0.75
200
TYP.
Preliminary specification
6
0.3
0.8
10
48
47.7
49.4
6.64
43.3
110
650
360
150
MAX.
2
300
TDA4855
v(o)
V
V
mA
mA
V
V
V
%
%
%
V
k
k
V
Hz
Hz
V
nF
A
s
s
s
A
UNIT
)