Digital Attenuator, 30 dB, 4-Bit,
DC - 2 GHz
V 3.00
AT-232
Features
n
Attenuation: 2 dB steps to 30 dB
n
Temperature Stability: 鹵 0.18 dB from 鈥?5擄C to +85擄C
n
n
n
n
CR-6
Typical
Low DC Power Consumption
Hermetic Surface Mount Package
Fast Switching Speed, 12 ns Typical
50 Ohm Nominal Impedance
Description
M/A-COM鈥檚 AT-232 is a GaAs FET 4-bit digital attenuator
with a 2 dB minimum step size and 30 dB total attenuation.
This attenuator is in a hermetically sealed ceramic 16-lead
surface mount package. The AT-232 is ideally suited for
use where accuracy, fast switching, very low power
consumption and low intermodulation products are
required. Typical applications include dynamic range
setting in precision receiver circuits and other gain/leveling
control circuits. Environmental screening is available.
Contact the factory for information.
Electrical Specifications
1
(From 鈥?5擄C to +85擄C)
Parameter
Reference Insertion Loss
Test Conditions
鈥?/div>
Frequency
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.0 GHz
鈥?/div>
鈥?/div>
鈥?/div>
0.05 GHz
0.5 - 2.0 GHz
0.05 GHz
0.5 - 2.0 GHz
0.05 GHz
0.5 - 2.0 GHz
Units
dB
dB
dB
Min
鈥?/div>
鈥?/div>
鈥?/div>
Typ
鈥?/div>
鈥?/div>
鈥?/div>
Max
2.0
2.3
2.5
Attenuation Accuracy
2
Any Single Bit
Any Combination of Bits
鹵 (0.15 dB +3% of atten setting in dB) dB
鹵 (0.2 dB +3% of atten setting in dB) dB
Or 鹵 0.45 dB, whichever is greater
鹵 (0.22 dB +3% of atten setting in dB) dB
鹵 (0.25 dB +4% of atten setting in dB) dB
Or 鹵 0.45 dB, whichever is greater
Ratio
ns
ns
mV
dBm
dBm
dBm
dBm
dBm
dBm
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
12
18
25
+20
+28
+40
+50
+45
+68
1.6:1
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
VSWR
Trise, Tfall
Ton, Toff
Transients
1 dB Compression
Input IP3
Input IP2
鈥?/div>
10% to 90%
50% Control to 90/10% RF
In-Band (peak-peak)
Input Power
Input Power
For two-tone Input Power
Up to +5 dBm
For two-tone Input Power
Up to +5 dBm
1. All specifications apply when operated with control votlages of 0.0V to -5.0V.
2. This attenuator is guaranteed monotonic.
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