Digital Attenuator, 31 dB, 5-Bit
DC 鈥?2 GHz
Features
Attenuation: 1-dB Steps to 31 dB
q
Temperature Stability: 鹵 0.15 dB from -40擄C
to +85擄C Typical
q
Ultra Low DC Power Consumption
q
Low Intermodulation Products: IP = 50 dBm
3
q
Low Cost SSOP 20 Plastic Package
q
Tape and Reel Packaging Available
q
AT-260
V 2.00
SSOP-20
Description
M/A-COM's AT-260 is a 5-bit, 1-dB step GaAs MMIC digi-
tal attenuator in a low cost SSOP-20 surface mount plastic
package. The AT-260 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.
Ordering Information
The AT-260 is fabricated with a monolithic GaAs MMIC
using a mature 1-micron process. The process features full
chip passivation for increased performance and reliability.
Part No.
AT-260 PIN
AT-260TR
AT-260RTR
Package
SSOP 20-Lead
Forward Tape & Reel
*
Reverse Tape & Ree
l*
Electrical Specifications, T
A
= 25擄C
Parameter
Reference
Insertion Loss
Test Conditions
1
*
If specific reel size is requIred, consult factory for part number
assignment.
Attenuation
Accuracy
2
VSWR
Trise, Tfall
Ton, Toff
Transients
One dB
Compression
IP2
DC 鈥?0.1 GHz
DC 鈥?0.5 GHz
DC 鈥?1.0 GHz
DC 鈥?2.0 GHz
DC 鈥?1.0 GHz
DC 鈥?2.0 GHz
(any state)
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, 50% Control to 10% RF
In Band
Input Power
0.05 GHz
Input Power
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)
Unit
Min.
Typ.
Max
dB
1.6
1.8
dB
1.7
1.9
dB
1.9
2.2
dB
2.2
2.5
鹵 (0.20 dB + 3% of Atten. Setting in dB) dB
鹵 (0.30 dB + 3% of Atten.Setting in dB) dB
1.5:1
nS
8
nS
15
mV
2
dBm
20
dBm
27
dBm
dBm
dBm
dBm
45
60
34
50
IP3
1. All measurements at 1 GHz in a 50鈩?system, unless otherwise specified.
2.Attenuation accuracy specifications apply with negative bias control and low inductance grounding.
1
2
