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LMH1251MT-NOPB bảng dữ liệu(PDF) 5 Page - Texas Instruments

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LMH1251MT-NOPB bảng dữ liệu(HTML) 5 Page - Texas Instruments

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LMH1251
www.ti.com
SNLS193J – AUGUST 2005 – REVISED MARCH 2013
Video Signal Electrical Characteristics (continued)
Unless otherwise noted: TA = 25°C, VCC = +5.0V, RGB VideoIN = 0.7 VPP, Y VideoIN = 0.7 VPP, PBPR VideoIN = ±350 mV,
CL = 8 pF, Video Outputs = 0.7 VPP.
Symbol
Parameter
Conditions
Min (1)
Typ (2)
Max (1)
Units
Video Frequency Domain Response
RGB BW
RGB Input:
Large Signal BW
400
MHz
Channel Bandwidth (
−3 dB)
YPBPR BW
YPBPR Input (SD & HD):
Large Signal BW
70
MHz
Channel Bandwidth (
−3 dB)
VSEP Ch-Ch
Video Amplifier 10 MHz Isolation
(6)
−50
dB
10 MHz
RGB Channel to Channel
VSEP INPUT-INPUT
Video Amplifier 10 MHz Isolation
(6)
−55
dB
10 MHz
RGB Input to YPBPR Input
SNR
Signal to Noise Ratio
AC Input Signal, CL = 8 pF
(6)
55
dB
(6)
Measure output levels of the other two undriven amplifiers relative to the driven amplifier to determine channel separation. Terminate the
undriven amplifier inputs to simulate generator loading. Repeat test at fIN = 10 MHz for VSEP 10 MHz.
Color Conversion Accuracy
Unless otherwise noted: TA = 25°C, VCC = +5.0V, Y VideoIN = 0.7 VPP, PBPR VideoIN = ±350 mV, CL = 8 pF,
Video Outputs = 0.7 VPP.
Symbol
Parameter
Conditions
Min (1)
Typ (2)
Max (1)
Units
VCOLOR ERROR
|PBPR| Amplitude
YPBPR Video Input,
±0.3
±2.5
%
(Calculated from RGB Outputs)
100% Color Bar (any 3 colors), (3)
θCOLOR ERROR
PBPR Phase Angle
YPBPR Video Input,
±0.2
±1.5
deg
(Calculated from RGB Outputs)
100% Color Bar (any 3 colors), (3)
(1)
Datasheet min/max specification limits are specified by design, test, or statistical analysis. The ensured specifications apply only for the
test conditions listed. Some performance characteristics may change when the device is not operated under the listed test conditions.
(2)
Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary
over time and will also depend on the application and configuration. The typical values are not tested and are not ensured on shipped
production material.
(3)
Any three color bar signals can be used as test signals. The RGB outputs shall be used to calculate the amplitudes and phases of the
chroma results. These should fall within the limits specified.
Sync Signal Electrical Characteristics
Unless otherwise noted: TA = 25°C, VCC = +5.0V, Y VideoIN = 0.7 VPP, PBPR VideoIN = ±350 mV, CL = 8 pF,
Video Outputs = 0.7 VPP.
Symbol
Parameter
Conditions
Min (1)
Typ (2)
Max (1)
Units
VSYNCL
H & V SYNC Low Input
Pins 1 & 2
−0.5
1.5
V
VSYNCH
H & V SYNC High Input
Pins 1 & 2
3.0
VCC +0.5
V
IO-SYNCH
H & V SYNC Current Sink/Source
5 k
Ω Load
3
mA
Capability
tR/F-SYNC
H & V SYNC Rise/Fall Time
15
ns
tSYNC-WIDTH
H & V SYNC Width Error Relative to
H & V SYNC Input
5
%
H & V SYNC Input
tY-SYNC-WIDTH
H & V SYNC Width Error Relative to
Composite SYNC on Y Input
5
%
Composite SYNCS on Y
tSYNC-DELAY
50% of H & V SYNC Input to Output
H & V SYNC Input
40
ns
tY-HSYNC-DELAY
50% of H SYNC Input to Output
Composite SYNC on Y Input (Not
70
ns
During Vertical Period)
(1)
Datasheet min/max specification limits are specified by design, test, or statistical analysis. The ensured specifications apply only for the
test conditions listed. Some performance characteristics may change when the device is not operated under the listed test conditions.
(2)
Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary
over time and will also depend on the application and configuration. The typical values are not tested and are not ensured on shipped
production material.
Copyright © 2005–2013, Texas Instruments Incorporated
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