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参数资料
| 型号： | AD724JRZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/15页 |
| 文件大小： | 0K |
| 描述： | IC ENCODER RGB TO NTSC 16-SOIC |
| 标准包装： | 47 |
| 类型： | 视频编码器 |
| 应用： | RGB 至 NTSC/PAL |
| 电压 - 电源，数字： | 4.75 V ~ 5.25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 管件 |
| 产品目录页面： | 788 (CN2011-ZH PDF) |
AD724–SPECIFICATIONS
REV. B
–2–
(Unless otherwise noted, VS = +5, TA = +25 C, using FSC 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, FIN, ENCD, STND, SELECT)
CMOS Logic Levels
Logic LO Input Voltage
1V
Logic HI Input Voltage
2V
Logic LO Input Current (DC)
<1
A
Logic HI Input Current (DC)
<1
A
VIDEO OUTPUTS
3
Luminance (LUMA)
Roll-Off @ 5 MHz
NTSC
–7
dB
PAL
–6
dB
Gain Error
–15
–3
+15
%
Nonlinearity
±0.3
%
Sync Level
NTSC
243
286
329
mV
PAL
300
mV
DC Black Level
1.3
V
Chrominance (CRMA)
Bandwidth
NTSC
3.6
MHz
PAL
4.4
MHz
Color Burst Amplitude
NTSC
170
249
330
mV p-p
PAL
288
mV
Color Signal to Burst Ratio Error4
±5%
Color Burst Width
NTSC
2.51
s
PAL
2.28
s
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
±15
%
Differential Gain
With Respect to Chroma
0.5
%
Differential Phase
With Respect to Chroma
2.0
Degrees
DC Black Level
1.5
V
Chroma/Luma Time Alignment
0ns
POWER SUPPLIES
Recommended Supply Range
Single Supply
+4.75
+5.25
V
Quiescent Current—Encode Mode
6
33
42
mA
Quiescent Current—Power Down
1
mA
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.
4Ratio of chroma amplitude to burst amplitude, difference from ideal.
5Difference between ideal color-bar phases and the actual values.
6Driving the logic inputs with VOH < 4 V will increase static supply current approximately 150
A per input.
Specifications are subject to change without notice.
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