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ADMV8505ACCZ-R7 数据表(PDF) 15 Page - Analog Devices

部件名 ADMV8505ACCZ-R7
功能描述  225 MHz to 520 MHz, Digitally Tunable, Band-Pass Filter
PDF  31 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADMV8505ACCZ-R7 数据表(HTML) 15 Page - Analog Devices

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Data Sheet
ADMV8505
APPLICATIONS INFORMATION
analog.com
Rev. 0 | 15 of 31
INTERPOLATION COEFFICIENTS
For reference, the ADMV8505 interpolation coefficients that were
used for device characterization are listed in Table 11. These inter-
polation coefficients are provided as a good starting point for use in
a system. Depending upon the system requirements and allowable
process tolerance, some minor adjustments may be needed to
the interpolation coefficients. For most applications, the device
process tolerance within a particular lot of material allows for one
set of interpolation coefficients, such that interpolation coefficient
calibration only needs to be performed once per lot. Refer to the
Interpolation Coefficient Calibration section for more information on
how to adjust the interpolation coefficients.
Table 11. Interpolation Coefficients
Coefficient Bit Field
Narrow
Bandwidth
Nominal
Bandwidth
Wide
Bandwidth
Y0
INTERP_FC_Y0
187
192
194
Y1
INTERP_FC_Y1
157
161
162
Y2
INTERP_FC_Y2
133
136
137
Y3
INTERP_FC_Y3
97
100
101
Y4
INTERP_FC_Y4
74
75
76
Y5
INTERP_FC_Y5
56
58
58
Y6
INTERP_FC_Y6
44
45
45
Y7
INTERP_FC_Y7
34
35
36
Y8
INTERP_FC_Y8
27
28
28
Y9
INTERP_FC_Y9
21
22
22
V0
INTERP_BW_V0
6
3
0
V1
INTERP_BW_V1
15
7
0
V2
INTERP_BW_V2
71
33
0
T0
INTERP_MATCH_T0
8
9
9
T1
INTERP_MATCH_T1
28
34
41
T2
INTERP_MATCH_T2
146
174
199
PRINTED CIRCUIT BOARD (PCB) DESIGN
GUIDELINES
The PCB used to implement the ADMV8505 can use standard
quality dielectric materials between the top metallization layer and
the internal ground layer, such as the Isola 370HR. The Rogers
4003 or the Rogers 4350 do not have to be used. The characteristic
impedance of the transmission lines to the RF1 and RF2 pins
of the ADMV8505 must be controlled to 50 Ω to ensure optimal
RF performance. Connect the GND pins and exposed pads of the
ADMV8505 directly to the ground plane of the PCB. Use a sufficient
number of via holes to connect the top and bottom ground planes of
the PCB.



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