Digital Attenuator, 15.5 dB, 5-Bit
DC - 2 GHz
Features
q
q
AT-280
V 2.00
SO-16
q
q
q
Attenuation: 0.5-dB Steps to 15.5 dB
Temperature Stability: ± 0.15 dB from -40°C to
+85°C Typical
Ultra Low DC Power Consumption
Low Intermodulation Products, IP3: 45 dBm
Tape and Reel Packaging Available
Description
M/A-COM's AT-280 is a 5-bit, 0.5 dB-step GaAs MMIC
digital attenuator in a low cost SOIC 16-lead surface mount
plastic package. The AT-280 is ideally suited for use where
high accuracy, fast switching, very low power consumption
and low intermodulation products are required at a low
cost. Typical applications include radio and cellular
equipment, wireless LANS, GPS equipment and other
Gain/Level Control circuits.
The AT-280 is fabricated with a monolithic GaAs MMIC
using a mature 1-micron process. The process features full
chip passivation for increased performance and reliability.
Ordering Information
Part Number
AT-280 PIN
AT-280TR
AT-280RTR
assignment.
Package
SOIC 16-Lead
Forward Tape & Reel*
Reverse Tape & Reel*
Electrical Specifications, T
A
= 25°C
Parameter
Reference
Insertion
Loss
Attenuation Accuracy
2
VSWR
Trise, Tfall
Ton, Toff
Transients
One dB
Compression
IP2
(any state)
Test Conditions
2
*
If specific reel size is required, consult factory for part number
Unit
dB
dB
dB
dB
Min.
Typ.
1.1
1.3
1.5
1.8
Max
1.3
1.5
1.8
2.0
DC – 0.1 GHz
DC – 0.5 GHz
DC – 1.0 GHz
DC – 2.0 GHz
DC – 1.0 GHz
DC – 2.0 GHz
± (0.20 dB + 3% of Atten. Setting in dB) dB
± (0.30 dB + 3% of Atten. Setting in dB) dB
1.5:1
nS
nS
mV
dBm
dBm
dBm
dBm
dBm
dBm
1.8:1
12
18
30
22
27
53
68
40
45
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, 50% Control to 10% RF
In Band
Input Power
Input Power
0.05 GHz
0.5 – 2.0 GHz
Measured Relative
0.05 GHz
to Input Power
0.5 – 2.0 GHz
(for two-tone input power up to +5 dBm)
Measured Relative
0.05 GHz
to Input Power
0.5 – 2.0 GHz
(for two-tone input power up to +5 dBm)
IP3
1. All measurements at 1 GHz in a 50Ω system, unless otherwise specified.
2. Attenuation accuracy specifications apply with negative bias control and low inductance grounding.
MA-COM [ M/A-COM TECHNOLOGY SOLUTIONS, INC. ]
