STV2112B Ver la hoja de datos (PDF) - STMicroelectronics
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STV2112B Datasheet PDF : 24 Pages
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STV2112B
ELECTRICAL CHARACTERISTICS (VCC = 9V, Tamb = 25oC, unless otherwise specified) (continued)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
RGB OUTPUTS (Pins 27-28-29) (continued)
Track Tracking between Luminance and
Chrominance Signals
From Max. contrast (0dB)
to -10dB contrast
Bwidth
Bandwith of Output Signals at -3dB
- CVBS Input (no SVHS) PAL
- CVBS Input(no SVHS) SECAM
- Y Input SVHS Mode
- RGB Inputs
fOSC = 4.43MHz, Sharp Typ.
fOSC = 4.43MHz, no sharp
No trap Filter, Sharp Typ.
8
S/N Signal to Noise Ratio of Output (VPP/VRMS) No signal on R-Y, B-Y inputs
4.43MHz PAL Signal
Contrast Max., Drive Max.,
on Y/CVBS Input
Saturation Typ., Sharp Typ.,
Bandwidth 5MHz
Res Residual Frequency at fOSC
at 2 fOSC and Higher Harmonics
PAL/SECAM
PAL/SECAM
2 dB
3.6
MHz
3.0
MHz
8
MHz
MHz
50
dB
25
100 mVPP
10
50 mVPP
FILTERS
VTUN1
VTUN2
Tuning Voltage Range (Pin 8)
Cloche Tuning Voltage Range (Pin 9)
Y DELAY LINE
3.2 to 4.8
V
2.5 to 6.5
V
td 1p
Delay Time PAL
td2
Delay Time SECAM
td 3p
Delay Time PAL
td4
Delay Time SECAM
SHARPNESS CIRCUIT (PAL only)
SVHS mode
SVHS mode
CVBS mode
CVBS mode
330 370 400 ns
500 540 580 ns
390 425 460 ns
550 590 630 ns
fSharp Center Frequency
GSharp Gain Variation from Min. to Max. Sharp
Overshoot Amplitude Variation compared to B/W
Pre-shoot Amplitude Variation compared to B/W
After-shoot Amplitude Variation compared to B/W
Coring Coring Range compared to B/W
SVHS mode
at fSharp
2T pulse, Sharp Max.
2T pulse, Sharp Max.
2T pulse, Sharp Max.
2.5
MHz
6
dB
150
%
-15
%
-40
%
10
%
Y TRAP FILTER
fTrap
QTrap
CRejPN
CrejS
Trap Frequency PAL
Trap Frequency SECAM
Trap Quality Factor
(Q=1/(fo/f-3dB - f-3dB/fo))
Color Subcarrier Rejection
Color Rejection SECAM Mode
-0.2 fOSC +0.2 MHz
-0.2 4.25 +0.2 MHz
Sharpness Min.
Sharpness Max.
1.7
-
3
-
PAL mode, Sharpness Min. 20
dB
at 4.1MHz
18
dB
at 4.4MHz
18
dB
CHROMINANCE BANDPASS
fC
Center Frequency
QBP Bandpass Quality Factor
CLOCHE FILTER
-0.25 fosc +0.25 MHz
2.8
3.5
4.2 -
fCloche
QCloche
Resonant Frequency
Cloche Quality factor
4.286
MHz
14
16
18 -
ACC CAPACITOR (Pin 5)
IC5
Charging Current
IL5
Leakage Current
During burst gate window
250
µA
0.2
1 µA
CHROMA PLL (Pins 2-3)
CR2-3 Catching Range
Q = 4.43MHz (Pin 3)
±600
Hz
11/24
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