Digital Attenuator, 28 dB, 3-Bit
DC - 2 GHz
Features
q
q
q
q
q
q
q
AT-230
SO-14
Pin #14
Attenuation 4-dB Steps to 28 dB
High Accuracy +/- 3%
Low DC Power Consumption: 50 碌W
Low Intermodulation Product: +50 dBm IP3
Temperature Range: -40藲C to +85藲C
Low Cost SOIC14 Plastic Package
Tape and Reel Packaging Available1
Orientation
Mark
Pin #1
.3357-.3444
(8.55-8.75)
-A-
0.050(1.27) BSC.
.013-.020 TYP
(0.33-0.51)
.1497-.1574
.2284-.2440
(3.80-4.00)
(5.80-6.20)
.010(0.25) M B M
-B-
.0532-.0688
(1.35-1.75)
-C-
.0040-.0098
(0.10-0.25)
0擄-8擄
.016-.050
(0.40-1.27)
.0075-.0098
(0.19-0.25)
.0099-.0196 x 45擄 Chamfer
(0.25-0.50)
Description
M/A-COM鈥檚 AT-230 is a 3-bit, 4-dB step GaAs MMIC
digital attenuator in a low cost SOIC 14-lead surface
mount plastic package. The AT-230 is ideally suited for
use where high accuracy, fast switching, very low power
consumption and low intermodulation products are
required. Typical applications include radio and cellular
equipment, wireless LANs, GPS equipment and other
Gain/Level Control circuits.
The AT-230 is fabricated with a monolithic GaAs MMIC
using a mature 1-micron process. The process features full
chip passivation for increased performance and reliability.
.010(0.25) M C A M B S
14-Lead SOP outline dimensions
Narrow body .150
(All dimensions per JEDEC No. MS-012-AB, Issue C)
Dimensions in ( ) are in mm.
Ordering Information
Part Number
AT-230 PIN
AT-230TR
AT-230RTR
Package
SOIC 14-Lead Plastic
Forward Tape & Reel
Reverse Tape & Reel
Electrical Specifications
1
, T
A
= +25擄C
Parameter
Reference Insertion Loss
Test Conditions
* If specific reel size is required, consult factory for part
number assignment.
Unit
Min.
Typ.
Max
dB
1.2
1.4
dB
1.5
1.7
dB
1.6
1.8
dB
1.8
2.1
鹵 (0.15 dB +3% of Attenuation Setting in dB) dB
鹵 (0.30 dB +3% of Attenuation Setting in dB) dB
1.2:1
nS
12
nS
18
mV
25
dBm
20
dBm
28
dBm
dBm
dBm
dBm
45
68
40
50
Attenuation Accuracy
VSWR
Trise, Tfall
Ton, Toff
Transients
1 dB
Compression
IP
2
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
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 鈥?2.0 GHz
Measured Relative
to Input Power
(for two-tone input power up to +5 dBm)
Measured Relative
to Input Power
(for two-tone input power up to +5 dBm)
0.05 GHz
0.5 鈥?2.0 GHz
0.05 GHz
0.5 鈥?2.0 GHz
IP
3
1. All measurements at 1 GHz in a 50鈩?system, unless otherwise specified.
Specifications Subject to Change Without Notice.
V2.0
s
M/A-COM, Inc.
s
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
Telephone: 800-366-2266
1
2
