DVT30-90~DVT550-865digitally tuned filter
BOWEI
Package Outline
Pinout
DVT30-90~DVT550-865
Pin
Descrip Gnd
Pin
Descrip A1
Pin 17
1
2
A7
9
3
4
5
6
7
A6
A5
A4
14
A3
15
A2
16
8
10-13
N/C
A0
Vcc GND GND
30
18-28
GND
29
Descrip RF
RF GND
Vcc=+2.7~3.3V
DVT30-90~DVT550-865
Outline tolerance 0.5mm；
Orientation dot pin 1
Bottom
A0~A7 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:
⎛
⎜
⎜
⎝
⎞
⎟
⎟
⎠
fdesired − flow
fhigh − flow
Tuneword =
×250
Example：If you wish to tune to 50MHz using a 30 to 90 MHz filter, the tune word is：
50 − 30
90 − 30
⎛
⎝
⎞
⎠
×250=83D=53H
⎜
⎟
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
Insertion Loss vs. Frequency
DVT30-90-5
DVT30-90-5
-2.0
-2.5
-3.0
6.0
5.5
5.0
-3.5
-4.0
4.5
4.0
90
30
50
70
30
50
70
90
frequency(MHz)
frequency(MHz)
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BOWEI [ BOWEI INTEGRATED CIRCUITS CO.,LTD. ]
