Digital Attenuator, 30 dB, 4-Bit,
TTL Driver, DC - 2.5 GHz
V 1.00
AT90-0233
Features
n
Attenuation: 2 dB Steps to 30 dB
n
Low DC Power Consumption
n
Small Footprint, JEDEC Package
n
Integral TTL Driver
n
50 Ohm Impedance
n
Test Boards Available
n
Tape and Reel Packaging Available
CSP-1
Description
M/A-COM鈥檚 AT90-0233 is a GaAs FET 4-Bit digital
attenuator with integral driver. Step size is 2 dB providing
a 30 dB attenuation range. This device is in an FQFP-N
plastic surface mount package. The AT90-0233 is suited
for use where accuracy, fast speed, very low power
consumption and low costs are required.
Electrical Specifications T
A
= +25擄C
Parameter
Insertion Loss
Attenuation
Accuracy
VSWR
Switching Speed
1 dB Compression
Input IP
3
+Vcc
-Vee
Logic 鈥?鈥?/div>
Logic 鈥?鈥?/div>
Icc
-Iee
Test Conditions
鈥?/div>
Individual Bits or Combination
of Bits
Full Range
50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
鈥?/div>
鈥?/div>
Two-tone inputs up to +5 dBm
鈥?/div>
鈥?/div>
Sink Current is 20 碌A(chǔ) max.
Source Current is 20 碌A(chǔ) max.
Vcc min to max,
Logic 鈥?鈥?or 鈥?鈥?/div>
-Vee min to max,
Logic 鈥?鈥?or 鈥?鈥?/div>
Frequency
DC - 2.5 GHz
DC - 2.5 GHz
DC - 2.5 GHz
鈥?/div>
鈥?/div>
50 MHz
0.5 - 2.5 GHz
50 MHz
0.5 - 2.5 GHz
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Units
dB
dB
Ratio
nS
nS
dBm
dBm
dB
dB
V
V
V
V
mA
mA
Min
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
4.75
-8.0
0.0
2.0
鈥?/div>
鈥?/div>
Typical
2.7
鈥?/div>
1.5:1
75
20
+21
+29
+35
+48
5.0
-5.0
鈥?/div>
鈥?/div>
0.2
-0.2
Max
3.0
鹵(.3 +5% of atten setting)
1.8:1
150
50
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
5.25
-4.75
0.8
5.0
6
-1
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