AT-280 Datasheet, PDF (1/2 Pages) Tyco Electronics – Digital Attenuator, 15.5 dB, 5-Bit DC - 2 GHz

Digital Attenuator, 15.5 dB, 5-Bit
DC - 2 GHz
Features
q Attenuation: 0.5-dB Steps to 15.5 dB
q Temperature Stability: ± 0.15 dB from -40°C to
+85°C Typical
q Ultra Low DC Power Consumption
q Low Intermodulation Products, IP3: 45 dBm
q Tape and Reel Packaging Available
SO-16
AT-280
V 2.00
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
Package
SOIC 16-Lead
Forward Tape & Reel*
Reverse Tape & Reel*
Electrical Specifications, T_A = 25°C
* ^{If specific reel size is required, consult factory for part number}
assignment.
Parameter
Test Conditions²
Unit
Min.
Typ.
Max
Reference
Insertion
Loss
DC – 0.1 GHz
dB
DC – 0.5 GHz
dB
DC – 1.0 GHz
dB
DC – 2.0 GHz
dB
1.1
1.3
1.3
1.5
1.5
1.8
1.8
2.0
Attenuation Accuracy²
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
VSWR
(any state)
1.5:1 1.8:1
Trise, Tfall
10% to 90% RF, 90% to 10% RF
nS
12
Ton, Toff
50% Control to 90% RF, 50% Control to 10% RF nS
18
Transients
In Band
mV
30
One dB
Compression
Input Power
Input Power
0.05 GHz dBm
22
0.5 – 2.0 GHz dBm
27
IP2
Measured Relative
to Input Power
0.05 GHz dBm
53
0.5 – 2.0 GHz dBm
68
(for two-tone input power up to +5 dBm)
IP3
Measured Relative
to Input Power
0.05 GHz dBm
40
0.5 – 2.0 GHz dBm
45
(for two-tone input power up to +5 dBm)
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.