AT004N3-11 Datasheet, PDF (1/2 Pages) Alpha Industries – GaAs 30 dB IC Voltage Variable Dual Control Attenuator DC-4 GHz

GaAs 30 dB IC Voltage Variable Dual
Control Attenuator DC–4 GHz
AT004N3-11
Features
s Dual Control Voltages
s Low Insertion Loss
s 8 Lead Hermetic Surface Mount Package
s Capable of Meeting MIL-STD
Requirements⁵
Description
The AT004N3-11 is a GaAs IC FET non-reflective bridged
“T” attenuator. This device provides over 30 dB of
“matched” attenuation with the input and output VSWR
less than 1.5:1 under all attenuation values. The
applications for these fast attenuators are AGC circuits and
variable level control in high reliability and
telecommunication systems.
-11
ORIENTATION
MARK
0.180 (4.57 mm)
SQ. MAX.
0.150
(3.81 mm)
0.050
0.400 (10.16 mm)
0.380 (9.65 mm)
0.017 (0.43 mm)
0.013 (0.33 mm)
(1.27 mm)
TYP.
0.070 (1.78 mm)
0.040 (1.02 mm)
0.006 (0.15 mm)
0.004 (0.10 mm)
0.075
(1.91 mm)
MAX.
0.250 (6.35 mm)
0.200 (5.08 mm)
Electrical Specifications at 25°C
Insertion Loss²
Parameter¹
Attenuation Range
VSWR (I/O)
Frequency⁴
DC–1.0 GHz
DC–2.0 GHz
DC–4.0 GHz
DC–1.0 GHz
DC–2.0 GHz
DC–4.0 GHz
DC–2.0 GHz
DC–4.0 GHz
Min.
Typ.
Max. Unit
0.8
1.0
dB
1.0
1.2
dB
1.2
1.4
dB
30
35
dB
29
33
dB
26
30
dB
1.25:1
1.40:1
1.3:1
1.5:1
Operating Characteristics at 25°C
Parameter
Switching Characteristics
Input Power for 1 dB Compression
Condition
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru³
For All Attenuation Levels
Control Voltages
V_Low = 0 to -0.2 V @ 20 µA Max.
V_High = -5 V @ 50 µA Max.
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
3. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
4. DC = 300 kHz.
5. See Quality/Reliability section.
Frequency
0.5–4 GHz
0.05 GHz
Min.
Typ.
7
10
20
0
-3
Max.
Unit
ns
ns
mV
dBm
dBm
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
1
Specifications subject to change without notice. 3/99A