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STV2237D 数据表(PDF) 29 Page - STMicroelectronics

部件名 STV2237D
功能描述  I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR
PDF  76 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STV2237D 数据表(HTML) 29 Page - STMicroelectronics

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STV223XD/224XC - ELECTRICAL CHARACTERISTICS
29/76
HALF CONTRAST INPUT (TQFP64)
FBOSD/HC INPUTS (SDIP56)
EXTERNAL RGB/YCrCb INPUTS
EXTERNAL FAST BLANKING INPUT (See Note 8)
Note 8: FBEXT input must be connected to ground if not used in the application.
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
VTH_HC
Half Contrast Threshold Voltage
0.5
0.7
0.85
V
tsWI_HC Half Contrast Delay
20
ns
CTR_HC
Contrast Attenuation when half con-
trast active
At Max. Contrast
6
dB
I_HC
Leakage Current
0V at Pin HC
10
µA
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
VTHFB1A
OSD Insertion Threshold Voltage
Half Contrast disable
Register 08hex d6 = 0
0.5
0.7
0.85
V
VTHFB1B
OSD Insertion Threshold Voltage
Half Contrast enable
Register 08hex d6 = 1
1.5
1.9
2.3
V
VTH-HC
Half Contrast Threshold Voltage
Half Contrast enable
Register 08hex d6 = 1
0.5
0.7
0.85
V
VTHFB2
Blanking Threshold Voltage,
Oversize Blanking active
Register 08hex, d7 = 1
3.2
4
4.8
V
tSWI1
Insertion Switching Delay
20
40
ns
tSWI2
Blanking Switching Delay
From FBOSD = 4V to starting of
blanking falling edge at R,G,B out-
puts
100
ns
IFB
Input current
0V at Pin FBOSD
10
µA
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
VCLAMP
Clamp Level
Max. Contrast
3.5
V
VRGB
RGB Input Voltage
0.7
1
VPP
VYCrCb
YCrCb Input Voltage
100% color bar
register 0Ahex d7d6 = 11
Y
Cr
Cb
1
0.7
0.7
VPP
CRGB
RGB Gain
Max. Contrast, Max. Drive
4.28
-
Dblack
Difference of black level of internal
and external signals at the RGB out-
puts
OSD signal versus internal signal
50
mV
IRGB
Clamping Current
60
100
140
µA
Crosstalk Deletion of non-selected RGB source From 0 to 5 MHz
50
dB
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
VTHFB
Insertion Threshold Voltage
0.5
0.7
0.85
V
tSWI
Insertion Switching Delay
20
40
ns
IFB
Input Current
0V at Pin FBEXT
10
µA
VMAX
Max. voltage allowed at FBEXT input
5
V



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