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STV2248C 数据表(PDF) 27 Page - STMicroelectronics

部件名 STV2248C
功能描述  I2C BUS-CONTROLLED MULTISTANDARD SINGLE CHIP TV PROCESSOR
PDF  76 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STV2248C 数据表(HTML) 27 Page - STMicroelectronics

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STV223XD/224XC - ELECTRICAL CHARACTERISTICS
27/76
Note 7: Measured from any input to output at f = 10 kHz with RL = 10k
Ω and Rg = 600Ω, Volume attenuation = 0dB.
AVL
4.5 CVBS, Y/C, RGB INPUTS AND CVBS OUTPUTS
LUMINANCE AND CVBS INPUTS
COMBINED CHROMINANCE AND SVHS SELECTION INPUT
CVBS1 OUTPUT
S/N2
Signal to Noise Ratio from Exter-
nal Input
Measured at 20 dB attenuation,
0 dB reference
Ext. Audio Input at 500 mVRMS
55
60
dB
S/N3
Signal to Noise Ratio from FM
Demod
Measured at 20 dB attenuation,
FM: ± 27 kHz (Standards BGDKI)
52
55
dB
SVRV
Supply Voltage Rejection from
External Input
Measured at f = 100 Hz from
VCC = 5 V and VCC = 8 V
60
dB
XT
Crosstalk
See Note 7
70
dB
NOISE
Output Noise Level
CCIR 468-4 Weighted Quasi Peak
Volume at minimum
Volume at typical
Volume at maximum
50
50
100
60
60
120
µV
AFIN
Audio Input Level
Volume = -25 dB, THD < 1%
2
VRMS
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
GAVL
AVL Gain Control Range
(7-bit Resolution)
20
dB
AVLMAX
Maximum attenuation
-15
dB
Reg.AVL
Regulation amplitude
Measured at AUDIOOUT
Volume Control at maximum
0.55
VRMS
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
DCIN1
Black Level Voltage
Input selected on main CVBS output
3.3
V
VIN
CVBS or Y Input Voltage
1
1.41
VPP
-I
Negative Clamping Current
During SYNC pulse
20
27
35
µA
I
Positive Clamping Current
2.5
4.5
7
µA
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
V
Chrominance Input Voltage
Burst Amplitude, 100/75 Color Bar
0.3
0.6
VPP
VCLIP
Input Amplitude before Clipping
1
VPP
VDC
DC Voltage
SVHS Mode
1.55
1.70
1.85
V
VTH
SVHS Threshold Voltage
0.50
0.90
1.45
V
ILOW
Output Current
0V at CHR Pin
150
µA
Symbol
Parameter
Test Conditions
Min.
Typ
Max.
Unit
VOUT
Dynamic Output Amplitude
1.5
VPP
ROUT
Internal Output Resistance
50
Ω
RLOAD
Output Load Resistance
1.5
k
Ω
BW
CVBS Bandwidth
VIN = 1VPP
10
MHz
Crosstalk
Deletion of non-selected signals
Up to 5 MHz
50
dB
MGAIN
Output Gain
From any CVBS/Y inputs
-0.5
0
0.5
dB
DCMAIN
DC Output Voltage
Black Level
3.5
V



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