Digital Attenuator, 30 dB, 4-Bit,
TTL Driver, DC - 2 GHz
V 3.00
AT-233
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
2
CR-12
Typical
Low DC Power Consumption
Hermetic Surface Mount Package
Integral TTL Driver
50 Ohm Nominal Impedance
Description
M/A-COM鈥檚 AT-233 is a GaAs FET 4-Bit digital
attenuator with a 2 dB minimum step size and 30 dB total
attenuation. This attenuator and integral TTL driver is in a
hermetically sealed ceramic 16-lead surface mount package.
The AT-233 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: T
A
= 25擄C
1
Parameter
Reference Insertion Loss
Test Conditions
Frequency
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
Any Single Bit
DC - 1.0 GHz
DC - 2.0 GHz
Units
dB
dB
dB
Min
鈥?/div>
鈥?/div>
鈥?/div>
Typ
鈥?/div>
鈥?/div>
鈥?/div>
Max
2.3
2.65
2.8
Attenuation Accuracy
3
Any Combination of Bits
鹵 (0.2 + 3% of attenuation setting in dB) dB
鹵 (0.2 + 3% of attenuation setting in dB) dB
or 鹵 0.45 dB, whichever is greater
DC - 1.0 GHz 鹵 (0.20 + 3% of attenuation setting in dB) dB
DC - 2.0 GHz 鹵 (0.25 + 4% of attenuation setting in dB) dB
or 鹵 0.45 dB, whichever is greater
DC - 2.0 GHz
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>
10
30
35
+20
+28
+40
+50
+45
+68
1.7:1
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
4
Input IP3
4
Input IP2
4
10% to 90%
50% Control to 90/10% RF
In-Band (peak-peak)
Input Power
For two tone input power
Up to +5 dBm
For two-tone input power
Up to +5 dBm
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
1. All specifications apply when operated with bias voltages of +5V or V
CC
and 鈥?.0V to 鈥?.0V for V
EE
, and 50 Ohm impedance at
all ports unless otherwise specified.
2. Above reference insertion loss.
3. This attenuator is guaranteed monotonic.
4. V
EE
= -5V for the typical numbers given.
AT-233PIN相關(guān)型號PDF文件下載
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