DVT30-90~DVT550-865digitally tuned filter
BOWEI
Package Outline
Pinout
DVT30-90~DVT550-865
Pin
1
2
A7
9
A0
18-28
GND
3
A6
4
A5
5
A4
14
V
cc
29
RF
30
GND
6
A3
15
7
A2
16
Descrip Gnd
Pin
Descrip
Pin
Descrip
8
A1
17
RF
10-13
N/C
GND GND
V
cc
=+2.7~3.3V
DVT30-90~DVT550-865
Outline tolerance 0.5mm；
Orientation dot pin 1
Bottom
A
0
~A
7
are 8 control bit lines. Tune words from 00000000 to 11111010 results in the tuned frequency from lowest to highest. The
binary tuning word is determined by the following relationship:
Tuneword =
⎜
⎛
f
desired
−
f
low
⎞
⎟
×
250
⎜
f
−
f
⎟
low
⎠
⎝
high
Example：If you wish to tune to 50MHz using a 30 to 90 MHz filter, the tune word is：
⎛
50
−
30
⎞ ×
250=83D=53H
⎜
⎟
⎝
90
−
30
⎠
Notes
1) The relationship between tuneword and frequency is only an approximate one.
2) Replacement alternative for MICRO-POLE series of POLE/ZERO
3) Zero DC resistance at both I/O port, additional DC blocking capacitance needed if necessary
4) RF input and output ports are interchangeable
5) Special frequency bands are available
Typical Plots
% 3dB Bandwidth vs. Frequency
DVT30-90-5
Insertion Loss vs. Frequency
DVT30-90-5
6.0
Insertion Loss (dB)
-2.0
-2.5
-3.0
-3.5
-4.0
30
50
70
frequency(MHz)
90
3dB Bandwidth %
5.5
5.0
4.5
4.0
30
50
70
frequency(MHz)
90
●TEL:+86-311-87091891
87091887
●
FAX:+86-311-87091282
●
http://www.cn-bowei.com
●
E-mail:cjian@cn-bowei.com
60
BOWEI [ BOWEI INTEGRATED CIRCUITS CO.,LTD. ]
