STV2247H View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STV2247H Datasheet PDF : 86 Pages
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STV224XH/228XH/223XH - ELECTRICAL CHARACTERISTICS
4.5.7 External RGB/YCrCb Inputs
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
VCLAMP Clamp Level
VRGB RGB Input Voltage
Max. Contrast
100% color bar
register 0Ahex d7d6 = 11
3.5
V
0.7
1
VPP
VYCrCb YCrCb Input Voltage
Y
1
VPP
Cr
0.7
Cb
0.7
CRGB RGB Gain
Max. Contrast, Max. Drive
4.28
-
Difference of black level of internal
Dblack and external signals at the RGB out- OSD signal versus internal signal
puts
50 mV
IRGB Clamping Current
Crosstalk Deletion of non-selected RGB source From 0 to 5 MHz
60 100 140 µA
50
dB
4.5.8 External Fast Blanking Input
(See Note 8)
Symbol
VTHFB
tSWI
IFB
VMAX
Parameter
Test Conditions
Insertion Threshold Voltage
Insertion Switching Delay
Input Current
0V at Pin FBEXT
Max. voltage allowed at FBEXT input
Min.
0.5
Typ.
0.7
20
Max.
0.85
40
10
5
Unit
V
ns
µA
V
Note 8: The FBEXT input must be connected to ground if not used in the application.
4.6 LUMA PART
4.6.1 Y Delay Line
Symbol
tD1
tD2
tD3
tD4
Parameter
Delay Time PAL/NTSC
Delay Time SECAM
Delay Time PAL/NTSC
Delay Time SECAM
tSHIFT Delay Time (lumDel1 - lumDel2)
Groupdel Group Delay up to 3.5MHz
Test Conditions
Min. Typ. Max. Unit
SVHS mode, Register 1F d3 = 0
520
ns
SVHS mode, Register 1F d3 = 0
640
ns
CVBS mode, Register 1F d3 = 0
560
ns
CVBS mode, Register 1F d3 = 0
710
ns
lumDel1 = reg 1F d3 = 0, standard
luma delay
lumDel2 = reg 1F d3 = 1, shifted luma
140
ns
delay
Trap-off
±30
ns
4.6.2 Peaking Circuit
Electrical parameter measured with color identified
Symbol
Parameter
fPEAK Center Frequency
GPEAK
Gain Variation from Min. to Max.
peaking
Overshoot
Amplitude Variation compared to
B/W amplitude
Test Conditions
Trap-off, coring ON
At fPEAK, coring ON
2T pulse, Max. peaking, coring ON
Min.
2.5
Typ.
3
9
Max.
3.5
Unit
MHz
dB
55
%
33/86
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