STV2247H View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STV2247H Datasheet PDF : 86 Pages
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STV224XH/228XH/223XH - ELECTRICAL CHARACTERISTICS
Symbol
Pre-shoot
Aft-shoot
Coring
Parameter
Amplitude Variation compared to
B/W amplitude
Amplitude Variation compared to
B/W amplitude
Coring Range compared to B/W
Test Conditions
2T pulse, Max. peaking, coring ON
2T pulse, Max. peaking, coring ON
Coring ON
Min. Typ. Max. Unit
40
%
40
%
10
%
4.6.3 Black Stretch Control (Pin BS)
See Figure 12
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
BSth1
Black Stretch Threshold referred to
B/W amplitude
Y/CVBS inputs: 0.7V B/W, No set-up
50
%
BSMax.
Maximum expansion referred to
B/W amplitude
Y/CVBS inputs: 0.7V B/W, No set-up
-15
%
BSVMax. Black Stretch Control Voltage
Max. black stretch
2.6
V
BSVMin. Black Stretch Control Voltage
No black stretch
3.3
V
I100IRE Discharging current
Y = 100IRE
8
µA
I0IRE Charging Current
Y = 0IRE
35
µA
4.6.4 Y Output
Symbol
Parameter
Yout-DC Black level
Yout-amp Black to White Amplitude
Yout-BW Luma Path Bandwidth
Yout S/N Signal to Noise Ratio (VPP/VRMS)
Test Conditions
Peaking nominal
SVHS mode/Trap-off
CVBS, PAL/NTSC 4.43MHz
CVBS, SECAM
CVBS, PAL/NTSC 3.58MHz
Bandwidth 5MHz,
Peaking Min.,coring ON
Min.
Typ.
3.7
0.7
Max.
0.99
Unit
VBW
V
8
2.7 3.5
2.5 3.1
2.5 3.0
50
MHz
dB
4.7 FILTERS
4.7.1 Y Trap Filter
Symbol
Parameter
fTRAP-PN Notch Frequency
fTRAP-S Notch Frequencies
fTRAP-ACC Notch Frequency Accuracy
QTRAP Trap Quality Factor
CrejPN Color Subcarrier Rejection
CrejS Color Rejection in SECAM Mode
4.7.2 Chrominance Bandpass
Symbol
fBP
QBP
Parameter
Center Frequency
Bandpass Quality Factor
Test Conditions
PAL/NTSC
SECAM fnb
SECAM fnr
Min.
Q = 1/ (f0/f-3dB - f-3dB/f0), Peaking
Min.
PAL/NTSC
20
From 4.1 to 4.6 MHz
At 3.9 MHz
10
Typ.
fOSC
4.2
4.5
1.5
20
Max.
3.5
Test Conditions
Register 12h, d3-d0 = 0000
Min.
-5%
2.8
Typ.
fOSC
3.5
Max.
+5%
4.2
Unit
MHz
MHz
%
-
dB
dB
Unit
MHz
-
34/86
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