SAA4981 Ver la hoja de datos (PDF) - Philips Electronics
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SAA4981 Datasheet PDF : 20 Pages
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Philips Semiconductors
Monolithic integrated 16 : 9 compressor
Preliminary specification
SAA4981
CHARACTERISTICS
VCCA = VCCD = 5 V; Tamb = 25 °C; fHREF = 15.625 kHz; substrate connected to VEED; YSIDE, BYSIDE and RYSIDE are
connected to CLAOUT; all voltages are referenced to VEEA = 0 V; input signal EBU colour bar 100/0/75/0
(CCIR recommended 471-1), Y = 0.32 V (p-p), (B−Y) = 1.33 V (p-p), (R−Y) = 1.05 V (p-p); source impedance
Zis = 300 Ω; coupling capacitor Ck = 2.2 nF; output loads connected to ground RL = 1 MΩ, CL = 20 pF; measured in
Fig.5; test input pin 12 has to be connected to VEED; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supply (pins 20, 19, 8, 7 and 4); note 1
VCCA
ICCA
VCCD
ICCD
analog supply voltage
analog supply current
digital supply voltage
digital supply current
Video inputs (pins 23, 22 and 21)
4.75 5.0 5.5 V
35
50
65
mA
4.75 5
5.5 V
1
9
14
mA
Y
ViY(p-p)
CI(Y)
ILI(Y)
RiY(cl)
(B−Y)
input voltage (peak-to-peak value)
active video
input capacitance
input leakage current between clamping
input resistance during clamping
Vi(B-Y)(p-p)
CI(B-Y)
ILI(B-Y)
RI(B-Y)(cl)
input voltage (peak-to-peak value)
active video
input capacitance
input leakage current between clamping
input resistance during clamping
(R−Y)
Vi(R−Y)(p-p)
CI(R−Y)
ILI(R−Y)(cl)
RI(R−Y)(cl)
input voltage (peak-to-peak value)
active video
input capacitance
input leakage current between clamping
input resistance during clamping
HREF input (pin 6)
Vi(top)
ILI(HREF)
CI(HREF)
Vslice
fi
tW
SHREF
input voltage of the top pulse
input leakage current
input capacitance
slicing level below top pulse
input frequency
pulse width
steepness
0.5 V under top
Side panel inputs (pins 15, 14 and 13)
Vi(side)
CI(side)
ILI(side)
input voltage
input capacitance
input leakage current
−
0.32 0.45 V
−
−
10
pF
−
−
0.1 µA
−
2
5
kΩ
−
1.33 1.9 V
−
−
10
pF
−
−
0.1 µA
−
2
5
kΩ
−
1.05 1.5 V
−
−
10
pF
−
−
0.1 µA
−
2
5
kΩ
3.0 −
6.5 V
−
−
10
µA
−
−
10
pF
0.5 0.75 1.0 V
14.0 15.6 17.2 kHz
1
−
−
µs
400 −
−
mV/ns
0.5 −
−
−
−
−
2.5 V
10
pF
0.1 µA
1995 Oct 05
9
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