SQ. MAX.
TYP.
The AT002S3-11 is a GaAs IC FET absorptive bridged 鈥淭鈥?/div>
attenuator. This attenuator operates from 0.4鈥?.5 GHz and
provides up to 35 dB of attenuation. The key feature of this
attenuator is the requirement of only one 鈥減ositive鈥?control
voltage. Blocking capacitors are required on the RF ports.
0.070 (1.78 mm)
0.040 (1.02 mm)
0.075
(1.91 mm)
MAX.
0.006 (0.15 mm)
0.004 (0.10 mm)
0.250 (6.35 mm)
0.200 (5.08 mm)
Electrical Specifications at 25擄C
Parameter
1
Insertion Loss (V
1
=
5 V)
2
Frequency
0.4鈥?.0 GHz
1.0鈥?.0 GHz
1.0鈥?.5 GHz
0.4鈥?.0 GHz
1.0鈥?.5 GHz
0.4鈥?.5 GHz
30
33
Min.
Typ.
1.5
1.7
2.2
35
38
2.2:1
2.5:1
Max.
1.7
2.0
2.5
Unit
dB
dB
dB
dB
dB
Attenuation Range (V
1
= 0)
VSWR (I/O)
3
Operating Characteristics at 25擄C
Parameter
Switching Characteristics
Condition
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
4
0鈥?0 dB
11鈥?0 dB
21鈥?0 dB
31鈥揗ax.
For All Attenuation Levels
V
Low
= 0 to -0.2 V @ 25
碌A(chǔ)
Max.
V
High
= 5 V @ 100
碌A(chǔ)
Typ.
5 V @ 100
碌A(chǔ)
Max.
0.4鈥?.5 GHz
Frequency
Min.
Typ.
0.5
1.0
20
鹵1.0
鹵1.5
鹵3.0
鹵4.0
-3
Max.
Unit
碌s
碌s
mV
dB
dB
dB
dB
dBm
Attenuation Flatness
Input Power for 1 dB Compression
Control Voltages
Supply Voltages (V
S
)
0.9 GHz
1. All measurements made in a 50
鈩?/div>
system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/擄C.
3. For all attenuation levels.
4. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
5. See Quality/Reliability section.
Alpha Industries, Inc.
[781] 935-5150
鈥?/div>
Fax
[617] 824-4579
鈥?/div>
Email
sales@alphaind.com
鈥?/div>
www.alphaind.com
Specifications subject to change without notice. 3/99A
1
1
2
