TDA4857PS NXP Semiconductors, TDA4857PS Datasheet - Page 18

• Manufacturer Part Number: TDA4857PS
• Manufacturer: NXP Semiconductors

Specifications of TDA4857PS

• Lead Free Status / Rohs Status: Not Compliant

Philips Semiconductors
2001 Apr 11
A
t
X-ray protection: pins XRAY and XSEL
V
t
R
XRAY
V
V
R
Vertical oscillator [oscillator frequency in application without adjustment of free-running frequency f
f
f
V
t
I
C
HDRV(OFF)
W(XRAY)(min)
fr(V)
cr(V)
d(scan)
VAGC
UTOMATIC VARIATION OF DUTY CYCLE
XRAY(sl)
CC(XRAY)(min)
CC(XRAY)(max)
VREF
i(XRAY)
XSEL
VAGC
I
PC monitors
2
SYMBOL
C-bus autosync deflection controller for
rst
/t
H
relative t
output; measured at
V
is modulated by the relation
I
slicing voltage level for latch
minimum width of trigger pulse
input resistance at pin 2
reset of X-ray latch
minimum supply voltage for
correct function of the X-ray
latch
maximum supply voltage for
reset of the X-ray latch
external resistor at pin 9
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)
amplitude control current
external capacitor at VAGC
(pin 22)
HREF
HDRV
/I
VREF
= 3 V; HDRV duty cycle
PARAMETER
OFF
time of HDRV
; see Fig.15
I
f
I
f
I
f
V
V
standby mode
pin 9 open-circuit or
connected to GND
pin 9 connected to V
R
pin 9 connected to V
R
pin 9 connected to V
R
no reset via I
R
C
constant amplitude; note 7 50
control bit VBLK = 0
control bit VBLK = 1
control bit AGCDIS = 0
control bit AGCDIS = 1
HDRV
H
HDRV
H
HDRV
H
XRAY
XRAY
XSEL
XSEL
XSEL
VREF
VCAP
= 31.45 kHz
= 58 kHz
= 110 kHz
18
= 20 mA;
= 20 mA;
= 20 mA;
CONDITIONS
< 6.38 V + V
> 6.38 V + V
= 22 k ;
= 100 nF
2
C-bus
BE
BE
CC
CC
CC
via
via
via
42
45.5
49
6.22
500
set control bit SOFTST via
the I
switch off V
re-apply V
2
56
40
220
305
150
120
MIN.
2
C-bus
45
48.5
52
6.39
5
5
42
3.0
260
350
0
CC
200
TYP.
CC
then
TDA4857PS
Product specification
48
51.5
55
6.56
30
4
130
43.3
160
300
395
220
MAX.
300
fr(V)
%
%
%
V
k
k
k
V
V
k
Hz
Hz
V
nF
UNIT
s
s
s
A
A
]