TDA4857PS Datasheet, PDF (22/56 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
I_{o(sink)(ASCOR)(max)} maximum output sink current
Focus section: pin FOCUS
V_VFOCUS(p-p)
amplitude of vertical parabola
(peak-to-peak value)
V_{o(FOCUS)(max)}
V_{o(FOCUS)(min)}
maximum output voltage
minimum output voltage
I_{o(FOCUS)(max)}
C_{L(FOCUS)(max)}
maximum output current
maximum capacitive load
B+ control section; see Figs 21 and 22
CONDITIONS
V_ASCOR ≥ 1.9 V
register VFOCUS = 0;
note 8
register VFOCUS = 07;
note 8
I_FOCUS = 0
I_FOCUS = 0
TRANSCONDUCTANCE AMPLIFIER: PINS BIN AND BOP
V_i(BIN)
I_i(BIN)(max)
V_ref(int)
input voltage pin 5
maximum input current pin 5
reference voltage at internal
non-inverting input of OTA
V_o(BOP)(min)
V_o(BOP)(max)
I_o(BOP)(max)
g_m(OTA)
G_v(ol)
C_BOP(min)
minimum output voltage pin 3
maximum output voltage pin 3
maximum output current pin 3
transconductance of OTA
open-loop voltage gain
minimum value of capacitor at
pin 3
I_BOP < 1 mA
note 11
note 12
VOLTAGE COMPARATOR: PIN BSENS
V_i(BSENS)
voltage range of positive
comparator input
V_i(BOP)
voltage range of negative
comparator input
I_{LI(BSENS)(max)}
maximum leakage current
OPEN-COLLECTOR OUTPUT STAGE: PIN BDRV
I_o(BDRV)(max)
I_LO(BDRV)
V_sat(BDRV)
t_{off(BDRV)(min)}
t_d(BDRV-HDRV)
maximum output current
output leakage current
saturation voltage
minimum off-time
delay between BDRV pulse
and HDRV pulse
BSENS DISCHARGE CIRCUIT: PIN BSENS
V_STOP(BSENS)
discharge stop level
I_dch(BSENS)
V_{th(BSENS)(restart)}
discharge current
threshold voltage for restart
discharge disabled
V_BDRV = 16 V
I_BDRV < 20 mA
measured at
V_HDRV = V_BDRV = 3 V
capacitive load;
I_BSENS = 0.5 mA
V_BSENS > 2.5 V
fault condition
MIN. TYP. MAX. UNIT
−
50
−
µA
−
0.02 −
V
−
0.8
−
V
5.7
6
6.3
V
4.9
5.2
5.7
V
±1.5 −
−
mA
−
−
20
pF
0
−
−
−
2.37 2.5
5.25 V
±1
µA
2.58 V
−
−
0.5
V
5.0
5.3
5.6
V
−
±500 −
µA
30
50
70
mS
−
86
−
dB
10
−
−
nF
0
−
5
V
0
−
5
V
−
−
−2
µA
20
−
−
mA
−
−
3
µA
−
−
300
mV
−
250
−
ns
−
500
−
ns
0.85 1.0
4.5
6.0
1.2
1.3
1.15 V
7.5
mA
1.4
V
2000 Jan 31
22