B
O
WEI
Features
Miniature Digitally
Tuned Filters
DVT30-90~DVT550-865
Digitally tuned Fliter
Frequency range
：
30~1000MHz
BOWEI INTEGRATED CIRCUITS CO.,LTD.
High “Q” varactor tuning circuit
Tuning control: 8 bit parallel (TTL compatible)
Input P
-1
: +10dBm(f
c
≥
90MHz),
0dBm(f
c
<90MHz)
DC Power: 3~3.6V/10~15mA
Double tuned 0.1dB Chebyshev response
Tuning Speed
≤50us(f
c
>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℃
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
Specification
Electronical
Parameter
3dB Bandwidth(%)
% 3dB Bandwidth flatness
1)
Insertion Loss at center frequency
2)
IL variance
3)
Shape factor (BW
30
/BW
3
)
Impedance
Maximum VSWR
Input P
-1
DC Power(V
cc
):
3~10%
≤1%
2~6dB
≤2dB
≤7:1
50
Ω
2.0:1max
+10dBm(TYP, f
c
≥
90MHz)
0dBm(TYP, f
c
<90MHz)
+3.3V/15mA
Example：DVT30-90-5
means DVT30-90 series with
5% 3dB bandwidth.
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 ×BW
3dB
%=20~25, For example % BW is 5% then IL is 4~5dB
3) See Page
60-61
for the typical curves
Enviromental
Vibration(5~2000Hz)
Shock(11 mSec)
Humidity
Standard
10G
30G
0~90%
Special
20G
50G
95%
Operating Temperature
Storage Temperature
Standard
-40~+60℃
-40~+100℃
Special
-40~+85℃
-55~+125℃
●TEL:+86-311-87091891
87091887
●
FAX:+86-311-87091282
●
http://www.cn-bowei.com
●
E-mail:cjian@cn-bowei.com
59
BOWEI [ BOWEI INTEGRATED CIRCUITS CO.,LTD. ]
