(Unless otherwise noted, VS = +5, T
參數(shù)資料
型號(hào)： AD725ARZ-RL
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 12/20頁(yè)
文件大?。?/td> 0K
描述： IC ENCODER RGB TO NTSC 16-SOIC
標(biāo)準(zhǔn)包裝： 1,000
類型： 視頻編碼器
應(yīng)用： RGB 至 NTSC/PAL
電壓 - 電源，數(shù)字： 4.75 V ~ 5.25 V
安裝類型： 表面貼裝
封裝/外殼： 16-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 16-SOIC W
包裝： 帶卷 (TR)
AD725–SPECIFICATIONS
REV. 0
–2–
(Unless otherwise noted, VS = +5, TA = +25 C, using 4FSC synchronous clock. All loads are
150
5% at the IC pins. Outputs are measured at the 75
reverse terminated load.)
Parameter
Conditions
Min
Typ
Max
Units
SIGNAL INPUTS (RIN, GIN, BIN)
Input Amplitude
Full Scale
714
mV p-p
Black Level
1
0.8
V
Input Resistance
2
RIN, GIN, BIN
1
M
Input Capacitance
5pF
LOGIC INPUTS (HSYNC, VSYNC, 4FSC, CE, STND)
TTL Logic Levels
Logic Low Input Voltage
1V
Logic High Input Voltage
2V
Logic Low Input Current (DC)
1
A
Logic High Input Current (DC)
1
A
VIDEO OUTPUTS
3
Luminance (LUMA)
Bandwidth, –3 dB
NTSC
4.4
MHz
PAL
5.2
MHz
Gain Error
–7
–2
+7
%
Nonlinearity
max p-p
0.3
%
Sync Level
NTSC
252
279
310
mV
PAL
264
291
325
mV
DC Black Level
1.3
V
Luminance Trap (YTRAP)
Output Resistance
1.0
k
DC Black Level
1.0
V
Chrominance (CRMA)
Bandwidth, –3 dB
NTSC
1.2
MHz
PAL
1.5
MHz
Color Burst Amplitude
NTSC
206
255
305
mV p-p
PAL
221
291
362
mV p-p
Color Burst Width
NTSC
2.51
s
PAL
2.28
s
Chroma Level Error
4
–4
%
Chroma Phase Error5
±3
Degrees
DC Black Level
2.0
V
Chroma Feedthrough
R, G, B = 0
15
40
mV p-p
Composite (COMP)
Absolute Gain Error
With Respect to Luma
–5
–1
+3
%
Differential Gain
With Respect to Chroma
0.5
%
Differential Phase
With Respect to Chroma
1.5
Degrees
DC Black Level
1.4
V
Chroma/Luma Time Alignment
S-Video
20
ns
POWER SUPPLIES
Recommended Supply Range
Single Supply
+4.75
+5.25 V
Quiescent Current—Encode Mode
30
36
mA
Quiescent Current—Power Down
<1
A
NOTES
1R, G, and B signals are inputted via an external ac coupling capacitor.
2Except during dc restore period (back porch clamp).
3All outputs measured at a 75
reverse-terminated load; ac voltages at the IC output pins are twice those specified here.
4Difference between ideal and actual color bar subcarrier amplitudes.
5Difference between ideal and actual color bar subcarrier phases.
Specifications are subject to change without notice.
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