STV2247H(2009) 查看數據表（PDF） - STMicroelectronics
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STV2247H Datasheet PDF : 86 Pages
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STV224X, STV228X, STV223X - 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
-
Dblack
Difference of black level of internal
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
t(s) 4.5.8 External Fast Blanking Input
(See Note 8)
uc Symbol
d VTHFB
ro tSWI
IFB
P VMAX
Parameter
Test Conditions
Insertion Threshold Voltage
Insertion Switching Delay
Input Current
0V at Pin FBEXT
Max. voltage allowed at FBEXT input
Min. Typ. Max. Unit
0.5 0.7 0.85 V
20
40
ns
10
µA
5
V
te Note 8: The FBEXT input must be connected to ground if not used in the application.
le 4.6 LUMA PART
so 4.6.1 Y Delay Line
b Symbol
O tD1
- tD2
) tD3
t(s tD4
Parameter
Delay Time PAL/NTSC
Delay Time SECAM
Delay Time PAL/NTSC
Delay Time SECAM
c tSHIFT Delay Time (lumDel1 - lumDel2)
rodu 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
P 4.6.2 Peaking Circuit
Electrical parameter measured with color identified
te Symbol
Parameter
lefPEAK Center Frequency
so GPEAK
Gain Variation from Min. to Max.
peaking
b 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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