參數(shù)資料
型號: AD723
廠商: Analog Devices, Inc.
英文描述: RGB to NTSC/PAL Encoder with Termination Switch(帶終端開關(guān)的RGB-NTSC/PAL編碼器)
中文描述: RGB到的NTSC / PAL編碼器與終端開關(guān)(帶終端開關(guān)的RGB-NTSC/PAL編碼器)
文件頁數(shù): 2/3頁
文件大?。?/td> 37K
代理商: AD723
REV 2
5/5/98
PAGE 2
AD723 ADVANCED SPECIFICATIONS:
Unless otherwise stated, V
75
load, shunt reverse termination
S
=+3V, T
A
= +25
o
C. Outputs are measured with a
Parameter
SIGNAL INPUTS (RDIN, GRIN, BLIN)
Input Amplitude
Black Level
1.
Input Resistance
2.
Input Capacitance
Conditions
Min
Typ
Max
Units
Full Scale
714
0.8
mVp-p
V
m
pF
Red, Green, Blue
1
5
LOGIC INPUTS (SYNC, FSC, ENCD, NTSC)
Logic LO Input Voltage
Logic HI Input Voltage
Logic LO Input current (DC)
Logic HI Input Current (DC)
CMOS logic levels
1.0
V
V
μ
A
μ
A
2.0
<
1
<
1
SWITCH CHARACTERISTICS
Input Capacitance
Switch On Resistance
High Impedance Leakage Current
VIN = 0V
VIN = 0V
6
5
0.1
pF
μ
A
3.5
VIDEO OUTPUTS
3.
Luminance (LUMA)
Roll-off @ 5MHz
NTSC
PAL
-5
-4
+5
+
0.6
286
300
338
351
dB
dB
%
%
mV
mV
mV
mV
Gain Error
Linearity Error
Sync Amplitude
NTSC
PAL
NTSC
PAL
DC Black Level
Luminance Trap (YTRAP)
Output Resistance
DC Black Level
1
1.0
K
V
No load
Chrominance (CRMA)
Bandwidth,-3dB Passband
NTSC
PAL
NTSC
PAL
31.2
1.5
286
307
±
3
2.51
2.28
±
3
650
10
0
MHz
MHz
mVp-p
mVp-p
%
us
us
Degrees
mV
mVp-p
ns
Color Burst Amplitude
Color Signal to Burst Ratio Error
4.
Color Burst Width
NTSC
PAL
Phase Error
5.
DC Black Level
Chroma Feedthrough
Chroma/Luma Time Alignment Error
R,G,B = 0
40
Composite (CMPS)
Absolute Gain Error
Differential Gain
Differential Phase
DC Black Level
-5
±
1
0.5
2.0
338
351
5
%
%
%
mV
mV
With respect to Chroma
With respect to Chroma
NTSC
PAL
POWER SUPPLIES
Recommended Supply Range
Encode Mode Quiescent Current
Single Supply
Full white
Using composite only
Using S-Video (Y,C)
Using all three
3.0
V
45
70
85
50
75
90
Notes:
1. On-Chip DC restore requires an external AC-coupling capacitor.
2. Except during DC Restore (back porch) period.
3. Voltages are measured with a 75
load, and 75
shunt reverse termination.
4. Ratio of chroma amplitude to burst amplitude, difference from ideal.
5. Difference between ideal color-bar phases and the actual values.
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