STV2246 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STV2246 Datasheet PDF : 86 Pages
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STV224X, STV228X, STV223X - ELECTRICAL CHARACTERISTICS
4.7.3 Bell Filter
Symbol
fBELL
QBP
Parameter
Center Frequency
Bell Quality Factor
Test Conditions
Register 11h, d4-d0 = 00000
Min.
4.27
14
Typ.
4.29
16
Max.
4.31
18
Unit
MHz
-
4.8 CHROMA PART
4.8.1 ACC
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
GACC ACC Control Range
Change of burst overall ACC control
range < 2dB
26
dB
VMin. Minimum Burst Signal Amplitude Within the ACC control range
0.03
VPP
4.8.2 ACC Overload
) Symbol
Parameter
t(s VTH Chroma regulation Threshold
Test Conditions
ACC overload ON, PAL/NTSC
Min. Typ. Max. Unit
3
dB
c 4.8.3 Killer
u Symbol
rod Ident-kill
Kill-Hyst
Parameter
Color on Threshold of ident. circuit
Color off Killer Hysteresis
Test Conditions
Burst amplitude on selected CVBS
input
Strong signal condition, S/N > 40 dB
Min.
Typ.
5
2
Max.
Unit
mVPP
mVPP
te P 4.8.4 Chroma PLL
Symbol
Parameter
le CaptR Catching Range
so HoldR Holding Range
Test Conditions
With recommended crystal and rec-
ommended CLPF filter value.
Min. Typ. Max. Unit
±300
> or = to capture range
b 4.8.5 PLL Loop Filter (PAL/NTSC)
- O Symbol
Parameter
) IC
Maximum Control Current
t(s IL
Leakage Current
c Frange-W Auto Flesh Control
Test Conditions
Min.
Color search mode (colour not ident.)
Color identified
Register 14(HEX), d6 = 1, d7 = 1
Typ. Max.
1000
350
5
±90
Unit
µA
µA
Deg
u 4.8.6 Hue Control
rod Symbol
Parameter
RHUE Hue Control Range
Test Conditions
Min. Typ. Max. Unit
±35 ±45 ±55 Deg
P 4.8.7 Automatic Flesh Control
te Symbol
leFleshNom.
o Fcorr0
bs FMax.-N
Parameter
Nominal Flesh Tint Phase
Phase Correction when Auto Flesh
ON
Maximum Phase Correction
Test Conditions
At FleshNom
Register 14(HEX), d6 = 1, d7 = 0
Min.
Typ. Max.
118
0
±10
Unit
Deg
Deg
Deg
Flesh-N
Chroma Input Phase at Max. cor-
rection
Register 14(HEX), d6 = 1, d7 = 0
±30
Deg
Frange-N Auto Flesh Control Range
Register 14(HEX), d6 = 1, d7 = 0
±60
Deg
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