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TDA4821P Datasheet, PDF (12/20 Pages) NXP Semiconductors – Autosize IC for colour monitors
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Philips Semiconductors
Autosize IC for colour monitors
Product specification
TDA4821P
CHARACTERISTICS
VDD = 3.3 V; Tamb = 25 °C; voltages measured with respect to ground (pins VSS); unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supplies
VDD(core)
VDD(I/O)
VDD(PLL)
IDD(core)
core supply voltage (pin 15)
I/O supply voltage (pin 6)
PLL supply voltage (pin 3)
core supply current (pin 15)
IDD(I/O)
I/O supply current (pin 6)
IDD(PLL)
PLL supply current (pin 3)
Ptot
total power dissipation
RGB input stage
3
3
3
fclk(int) = 48 MHz
−
fclk(int) = 24 MHz
−
no load on digital output −
pins
−
−
3.3
3.6
V
3.3
3.6
V
3.3
3.6
V
10
14
mA
6
8
mA
−
300
µA
400
800
µA
−
100
mW
VVIN1
video channel 1 input voltage AC-coupled with 10 nF 0
−
VDD − 0.5 V
(pin 1)
VVIN2
video channel 2 input voltage AC-coupled with 10 nF 0
−
VDD − 0.5 V
(pin 2)
VVIN3
video channel 3 input voltage AC-coupled with 10 nF 0
−
VDD − 0.5 V
(pin 19)
VCLP
clamping active input voltage
(pin 17)
0
−
VDD
V
Vclamp(ref) default clamping level for video internal default value
360
400
440
mV
channel inputs
(pins 1, 2 and 19)
Vclamp(video) clamping voltage range for
externally adjustable
100
400
440
mV
video channel inputs
range
(pins 1, 2 and 19)
Vslice
slicing voltage for video
comparators
450
500
550
mV
td(video)
Iclamp
video comparator delay time
VVIN = Vslice + 30 mV
−
clamping current
Vclamp = 400 mV;
−
clamp = HIGH
10
25
ns
−
10
mA
ILI(video)
video input leakage current
clamp = LOW
−
−
1
µA
Vclamp
clamping level voltage (pin 20) internal default value 380
400
420
mV
Vclamp(adj) adjustable clamping level
externally adjustable
0
−
420
mV
voltage range (pin 20)
range
CLEV(min)
minimum capacitance at LEV
(pin 20)
1
10
−
nF
Vth(H)
clamping active threshold
rising edge (hysteresis 1.3
−
voltage (pin 17)
input)
1.9
V
Vth(L)
clamping inactive threshold
falling edge (hysteresis 0.9
−
voltage (pin 17)
input)
1.35
V
tW(clamp) clamping pulse width (pin 17) video inputs AC-coupled 300
−
−
ns
with 10 nF
2000 Feb 09
12
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