Voltage Variable Absorptive Attenuator, 40 dB
DC - 2 GHz
AT-339
V 2.00
Features
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SO-14
40 dB Voltage Variable Attenuation
Low Intermodulation Products
Very Low Power Consumption: 50 碌W
Dual Voltage Control 0 to -4 Volts
Nanosecond Switching Speed
Temperature Range: -40藲C to +85藲C
Low Cost SOIC14 Plastic Package
Tape and Reel Packaging Available
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Description
M/A-COM鈥檚 AT-339 is a GaAs MMIC voltage variable absorptive
attenuator in a low cost SOIC 14-lead surface mount plastic pack-
age. The AT-339 is ideally suited for use where attenuation fine
tuning, fast switching and very low power consumption are
required. Typical applications include radio, cellular, and GPS
equipment and other Automatic Gain/Level Control circuits.
The AT-339 is fabricated with a monolithic GaAs MMIC using a
mature 1-micron process. The process features full chip passiva-
tion for increased performance and reliability.
Ordering Information
Part Number
AT-339 PIN
AT-339TR
AT-339RTR
Package
SOIC 14-Lead Plastic Package
Forward Tape & Reel
Reverse Tape & Reel
Electrical Specifications, T
A
= +25擄C
Parameter
Insertion Loss
Test Conditions
2
DC 鈥?0.1 GHz
DC 鈥?0.5 GHz
DC 鈥?1.0 GHz
DC 鈥?2.0 GHz
20 dB Attenuation
30 dB Attenuation
40 dB Attenuation
Unit
dB
dB
dB
dB
dB
dB
dB
nS
nS
mV
dBm
dBm
dBm
dBm
dBm
Min.
Typ.
0.6
0.8
1.2
1.3
+/-0.5
+/-1.5
+/-5.0
1.5:1
18
35
20
5
39
49
30
38
Max
0.9
1.1
1.4
1.5
+/-0.8
+/-1.8
+/-5.5
Flatness
(peak to peak)
VSWR (Matched)
Trise, Tfall
Ton, Toff
Transients
One dB
Compression
IP2
IP3
DC 鈥?2.0 GHz
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, 50% Control to 10% RF
In Band
Input Power (over atten. range)
Measured Relative (over atten. range)
to Input Power
(for two-tone input power up to +5 dBm)
Measured Relative (over atten. range)
to Input Power
(for two-tone input power up to +5 dBm)
0.05 GHz
0.5 鈥?2.0 GHz
0.05 GHz
0.5 鈥?2.0 GHz
1. Refer to 鈥淭ape and Reel Packaging鈥漇ection, or contact factory.
2. All measurements at 1 GHz in a 50鈩?system, unless otherwise specified.The A and B control voltages vary 0 to -4 volts @ 20 碌A(chǔ) typ.
This Material Copyrighted by Its Respective Manufacturer
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