- 您现在的位置：买卖IC网 > PDF目录373890 > AD6622 (Analog Devices, Inc.) Four-Channel, 75 MSPS Digital Transmit Signal Processor TSP PDF资料下载
参数资料
| 型号： | AD6622 |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | Four-Channel, 75 MSPS Digital Transmit Signal Processor TSP |
| 中文描述： | 4通道，75 MSPS的数字传输信号处理器判刑 |
| 文件页数： | 14/28页 |
| 文件大小： | 242K |
| 代理商： | AD6622 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
AD6622
–14–
REV. 0
Table II lists maximum bandwidth that will be rejected to various
levels for CIC5
interpolation factors from 1 to 32. Figure 15
corresponds to the listing in the
–
110 dB column and the L
CIC5
= 5 row. It is worth noting that the rejection of the CIC5 improves
as the interpolation factor increases.
Table II. CIC5 Alias Protection
–110 dB
–100 dB
–90 dB
–80 dB
–70 dB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Full
0.101
0.126
0.136
0.141
0.143
0.144
0.145
0.146
0.146
0.147
0.147
0.147
0.147
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
0.148
Full
0.127
0.159
0.170
0.175
0.178
0.179
0.180
0.181
0.182
0.182
0.182
0.183
0.183
0.183
0.183
0.183
0.183
0.183
0.184
0.184
0.184
0.184
0.184
0.184
0.184
0.184
0.184
0.184
0.184
0.184
0.184
Full
0.160
0.198
0.211
0.217
0.220
0.222
0.224
0.224
0.225
0.226
0.226
0.226
0.226
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.227
0.228
Full
0.203
0.246
0.262
0.269
0.272
0.275
0.276
0.277
0.278
0.278
0.279
0.279
0.279
0.280
0.280
0.280
0.280
0.280
0.280
0.280
0.280
0.280
0.280
0.281
0.281
0.281
0.281
0.281
0.281
0.281
0.281
Full
0.256
0.307
0.325
0.333
0.337
0.340
0.341
0.342
0.343
0.344
0.344
0.345
0.345
0.345
0.345
0.346
0.346
0.346
0.346
0.346
0.346
0.346
0.346
0.346
0.346
0.346
0.346
0.346
0.346
0.346
0.346
CIC2
The CIC2 is a second-order interpolating cascaded integrator
comb whose impulse response is completely de
fi
ned by its inter-
polation factor, L
CIC2
. The value L
CIC2
–
1 can be independently
programmed for each channel at location 0x08. While this con-
trol register is 8 bits wide, L
CIC2
should be con
fi
ned to the ranges
shown by the table below according to the interpolation factor
of the CIC5. Exceeding the recommended guidelines may result in
overflow for input sequences at or near full scale. While relatively
small values of L
CIC5
allow for the larger overall interpolation
factors with minimal power consumption, L
CIC5
should be maxi-
mized to achieve the best overall image rejection.
Table III. Maximum L
CIC2
Limits
L
CIC5
1
–
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Max L
CIC2
256
209
172
143
119
101
85
73
63
54
47
41
36
32
The transfer function of the CIC2 is given by the following
equations with respect to the CIC2 output sample rate, f
OUT
.
CIC( )
z
z
L
CIC
2
1
1
2
1
2
–
–
–
–
=
(14)
This polynomial fraction can be completely reduced as follows,
demonstrating a
fi
nite impulse response with perfect phase lin-
earity for all values of
L
CIC
2
.
CIC( )
z
z
e
k
k
L
j
k
L
k
L
∑
CIC
∑
2
0
2
1
2
1
2
21
–
2
21
–
=
=
=
=
π
(15)
The frequency response of the CIC2 can be expressed as follows.
The maximum gain is L
CIC2
at baseband. The initial 1/L
CIC2
factor normalizes for the increased rate, which is appropriate
when the samples are destined for a DAC with a zero order hold
output.
CIC
f
L
L
f
f
f
f
CIC
CIC
OUT
OUT
2
1
2
2
2
( )
sin
sin
=
×
π
π
(16)
As an example, we will consider an input from the CIC5 whose
bandwidth is 0.0033 of the CIC5 rate, centered at baseband.
Interpolation by a factor of
fi
ve reveals
fi
ve images, as shown
below.
相关PDF资料 |
PDF描述 |
|---|---|
| AD6623 | 4-Channel, 104 MSPS Digital Transmit Signal Processor TSP |
| AD6623ABC | 4-Channel, 104 MSPS Digital Transmit Signal Processor TSP |
| AD6623AS | 4-Channel, 104 MSPS Digital Transmit Signal Processor TSP |
| AD6623PCB | 4-Channel, 104 MSPS Digital Transmit Signal Processor TSP |
| AD6624AS | Four-Channel, 80 MSPS Digital Receive Signal Processor (RSP) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD6622AS | 制造商:Analog Devices 功能描述:Transmit Signal Processor 128-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:4 CHANNEL 65 MSPS DIGITAL UPCONVERTER - Bulk |
| AD6622PCB | 制造商:AD 制造商全称:Analog Devices 功能描述:Four-Channel, 75 MSPS Digital Transmit Signal Processor TSP |
| AD6622S | 制造商:AD 制造商全称:Analog Devices 功能描述:Four-Channel, 75 MSPS Digital Transmit Signal Processor TSP |
| AD6622S/PCB | 制造商:AD 制造商全称:Analog Devices 功能描述:Four-Channel, 75 MSPS Digital Transmit Signal Processor TSP |
| AD6623 | 制造商:Analog Devices 功能描述: |
发布紧急采购，3分钟左右您将得到回复。