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参数资料
| 型号： | AD9267EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD9267 |
| 标准包装： | 1 |
| ADC 的数量： | 2 |
| 位数： | 16 |
| 采样率（每秒）： | 640M |
| 数据接口： | 串行，SPI? |
| 输入范围： | 2 ~ 3 Vpp |
| 在以下条件下的电源（标准）： | 416mW @ 640MSPS |
| 工作温度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD9267 |
| 已供物品： | 板 |
AD9267
Rev. 0 | Page 22 of 24
Referring to Figure 46, the 3 dB cutoff frequency of the low-
pass Chebyshev II filter response resides at 15.75 MHz, and at
10 MHz, there is 0.43 dB of attenuation due to the sharp roll-off
of the filter. Table 15 summarizes the components and
manufacturers used to build the circuit.
Table 15. Chebyshev II Filter Components
Parameter
Value
Unit
Manufacturer
C1
39
pF
Murata GRM188 series, 0603
L1
180
nH
Coil Craft 0402AF, 2%
C2
390
pF
Murata GRM188 series, 0603
C3
220
pF
Murata GRM188 series, 0603
–20
0
2
4
6
8
1012
14161820
–18
–16
–14
–12
–10
–8
–6
–4
–2
0
–60
–50
–40
–30
–20
–10
0
10
20
30
40
GR
OU
P
D
E
L
A
Y
(
n
s
)
FREQUENCY (MHz)
AM
P
L
IT
UDE
(
d
B)
07
773
-05
0
Figure 46. Low-Pass Chebyshev II Filter Response
In addition to matching the profile of Figure 44, group delay
and channel matching are important filter design criteria. Low
tolerance components are highly recommended for improved
channel matching, which translates to minimal degradation in
image rejection for quadrature systems.
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