TDA4857PS Datasheet, PDF (16/56 Pages) NXP Semiconductors – I2C-bus autosync deflection controller for PC monitors

Philips Semiconductors
I²C-bus autosync deflection controller for
PC monitors
Product specification
TDA4857PS
SYMBOL
PARAMETER
CONDITIONS
MIN.
TC_fr
f_H(max)
V_HREF
temperature coefficient of
free-running frequency
maximum oscillator frequency
voltage at input for reference
current
−100
−
2.43
Unlock blanking detection: pin HUNLOCK
V_{scan(HUNLOCK)}
low level voltage of HUNLOCK saturation voltage in case −
of locked PLL1; internal
sink current = 1 mA
V_{blank(HUNLOCK)}
TC_blank
TC_sink
I_sink(int)
I_L(max)
I_L
blanking level of HUNLOCK external load current = 0 0.9
temperature coefficient of
−
V_{blank(HUNLOCK)}
temperature coefficient of
−
I_{sink(HUNLOCK)}
internal sink current
for blanking pulses;
1.4
PLL1 locked
maximum external load current V_HUNLOCK = 1 V
−
leakage current
V_HUNLOCK = 5 V in case of −
unlocked PLL1 and/or
protection active
PLL1 phase comparator and frequency-locked loop: pins HPLL1 and HBUF
t_{W(HSYNC)(max)}
maximum width of horizontal
−
sync pulse (referenced to line
period)
t_lock(HPLL1)
total lock-in time of PLL1
−
I_ctrl(HPLL1)
control currents
notes 4 and 5
locked mode, level 1 −
locked mode, level 2 −
V_HBUF
buffered f/v voltage at HBUF minimum horizontal
−
(pin 27)
frequency
maximum horizontal
−
frequency
Phase adjustments and corrections via PLL1 and PLL2
HPOS
HPINBAL
horizontal position (referenced
to horizontal period)
horizontal pin unbalance
correction via HPLL2
(referenced to horizontal
period)
register HPOS = 0
−
register HPOS = 127
−
register HPOS = 255
−
register HPINBAL = 0;
−
control bit HPC = 0; note 6
register HPINBAL = 15; −
control bit HPC = 0; note 6
register HPINBAL = X;
−
control bit HPC = 1; note 6
TYP.
0
−
2.55
−
1
−0.9
0.15
2.0
−
−
−
40
15
145
2.5
0.5
−13
0
13
−0.8
0.8
0
MAX. UNIT
+100 10^−6/K
130
kHz
2.68 V
250
mV
1.1
V
−
mV/K
−
%/K
2.6
mA
−2
mA
±5
µA
25
%
80
ms
−
µA
−
µA
−
V
−
V
−
%
−
%
−
%
−
%
−
%
−
%
2000 Jan 31
16