BOWEI DVT30-110

BOWEI
DVT30-90~DVT550-865
Digitally tuned Fliter
Frequency range:30~1000MHz
Miniature Digitally
Tuned Filters
BOWEI INTEGRATED CIRCUITS CO.,LTD.
Features
High “Q” varactor tuning circuit
Tuning control: 8 bit parallel (TTL compatible)
Input P-1: +10dBm(fc≥90MHz),
0dBm(fc<90MHz)
DC Power: 3~3.6V/10~15mA
Double tuned 0.1dB Chebyshev response
Tuning Speed ≤50us(fc>30MHz)
Up to 251 tuning step
Typical 2~3 octave band cover the frequency
band 30~1000MHz
SMT Package (non-hermetic)
Operating Temperature Range:-40℃~+85℃
Specification
Electronical
Selection Guide:
DVT30-90 (30~90MHz), DVT30-110 (30~110MHz)
DVT90-200(90~200MHz),
DVT200-400(200~400MHz)
DVT400-700(400~700MHz) ,
DVT550-865(550~865MHz)
Note: Custom frequency bands availalbe
Example:DVT30-90-5 means DVT30-90 series with
5% 3dB bandwidth.
Parameter
3dB Bandwidth(%)
3~10%
% 3dB Bandwidth flatness1)
≤1%
Insertion Loss at center frequency2)
2~6dB
IL variance3)
≤2dB
Shape factor (BW30/BW3)
≤7:1
50Ω
Impedance
Maximum VSWR
2.0:1max
+10dBm(TYP, fc≥90MHz)
0dBm(TYP, fc<90MHz)
+3.3V/15mA
Input P-1
DC Power(Vcc):
Note: 1) difference of % 3dB bandwidth within the frequency band, see Page60-61 for typical curves
2) Insertion loss at center frequency is typical one, the wider passband the lower IL. Following method used to calculate
insertion loss:IL ×BW3dB%=20~25, For example % BW is 5% then IL is 4~5dB
3) See Page 60-61 for the typical curves
Enviromental
Standard
Special
Vibration(5~2000Hz)
10G
20G
Operating Temperature
-40~+60℃
-40~+85℃
Shock(11 mSec)
30G
50G
Storage Temperature
-40~+100℃
-55~+125℃
0~90%
95%
Humidity
Standard
Special
●TEL:+86-311-87091891 87091887 ● FAX:+86-311-87091282 ● http://www.cn-bowei.com ● E-mail:cjian@cn-bowei.com
59
DVT30-90~DVT550-865digitally tuned filter
BOWEI
Package Outline
Pinout
DVT30-90~DVT550-865
Pin
1
Descrip Gnd
2
3
4
5
6
7
A7
A6
A5
A4
A3
A2
15
16
Pin
8
9
10-13
14
Descrip
A1
A0
N/C
Vcc
Pin
17
18-28
29
30
Descrip
RF
GND
RF
GND
GND 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:
⎛ f desired − f low ⎞
⎟ ×250
⎜ f −f
⎟
low ⎠
⎝ high
Tuneword = ⎜
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
Insertion Loss vs. Frequency
DVT30-90-5
DVT30-90-5
-2.0
Insertion Loss (dB)
3dB Bandwidth %
6.0
5.5
5.0
4.5
4.0
30
-2.5
-3.0
-3.5
-4.0
50
70
frequency(MHz)
90
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
DVT30-90~DVT550-865digitally tuned filter
BOWEI
% 3dB Bandwidth vs. Frequency
Insertion Loss vs. Frequency
DVT90-200-5
DVT90-200-5
-3.0
Insertion Loss (dB)
3dB Bandwidth %
5.5
5.0
4.5
4.0
3.5
90
120
150
180
frequency(MHz)
-3.5
-4.0
-4.5
-5.0
90
200
120
DVT200-400-4
DVT200-400-4
Insertion Loss(dB)
3dB Bandwidth %
200
-2.5
5.5
5.0
4.5
4.0
3.5
200
150
180
frequency(MHz)
250
300
350
frequency(MHz)
-3.0
-3.5
-4.0
-4.5
200
400
P/N:DVT30-90-5
250
300
350
frequency(MHz)
400
P/N:DVT30-90-5
●TEL:+86-311-87091891 87091887 ● FAX:+86-311-87091282 ● http://www.cn-bowei.com ● E-mail:cjian@cn-bowei.com
61
DVT30-90~DVT550-865digitally tuned filter
BOWEI
P/N:DVT200-400-4
P/N:DVT200-400-4
P/N:DVT400-700-4
P/N:DVT550-865-4
●TEL:+86-311-87091891 87091887 ● FAX:+86-311-87091282 ● http://www.cn-bowei.com ● E-mail:cjian@cn-bowei.com
62