AT-220
M/A-COM, Inc.
North America:
Digital Attenuator, 30 dB, 4-Bit
DC - 2 GHz
Features
Description
M/A-COM’s AT-220 is a 4-bit, 2-dB step GaAs MMIC
digital attenuator in a low cost SOIC 16-lead surface
mount plastic package. The AT-220 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-220 is fabricated with a monolithic GaAs MMIC
using a mature 1-micron process. The process features
full chip passivation for increased performance and
reliability.
Electrical Specifications,
1. Refer to “Tape and Reel Packaging” Section, or contact factory.
2. All measurements at 1 GHz in a 50Ω system, unless otherwise specified.
3. Attenuation accuracy specifications apply with negative bias control and low inductance grounding.
Reference Insertion Loss
11/15/96 1:49 PM
Attenuation Accuracy
Attenuation 2-dB Steps to 30 dB
High Accuracy +/-3%
Temperature Stability +/-0.15 dB from -40°C to +85°C
Low Intermodulation Product: +50 dBm IP3
Low DC Power Consumption: 50 mW
Low Cost SOIC 16 Plastic Package
Tape and Reel Packaging Available1
Compression
Parameter
Trise, Tfall
Transients
Ton, Toff
VSWR
1 dB
IP
IP
2
3
Specifications Subject to Change Without Notice.
Tel. (800) 366-2266
Fax (800) 618-8883
3
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)
Input Power
Input Power
Page 1
50% Control to 90% RF, 50% Control to 10% RF
T
A
= 25°C
10% to 90% RF, 90% to 10% RF
(Black plate)
Asia/Pacific: Tel. +81 3 3263 8761
Test Conditions
In Band
Fax +81 3 3263 8769
2
SO-16
Ordering Information
DC – 0.1 GHz
DC – 0.1 GHz
DC – 1.0 GHz
DC – 2.0 GHz
DC – 1.0 GHz
DC – 2.0 GHz
0.5 – 2.0 GHz
0.5 – 2.0 GHz
0.5 – 2.0 GHz
AT-220 PIN
AT-220TR
AT-220RTR
Part Number
.004 (0.10)
0.050(1.27) BSC.
0.05 GHz
0.05 GHz
0.05 GHz
Orientation
Pin #16
Pin #1
Mark
.010(0.25) M C A M B S
Unless Otherwise Noted: .xxx = ± 0.010 (.xx = ± 0.25)
(All dimensions per JEDEC No. MS-012-AC, Issue C)
.013-.020 TYP
(0.33-0.51)
0.3859-0.3937
(9.80-10.00)
Unit
dBm
dBm
dBm
dBm
dBm
dBm
-A-
16-Lead SOP outline dimensions
±(0.15 dB + 3% of Attenuation Setting in dB) dB
±(0.30 dB + 3% of Attenuation Setting in dB) dB
mV
dB
dB
dB
dB
nS
nS
Dimensions in ( ) are in mm.
Europe: Tel. +44 (1344) 869 595
Narrow body .150
.0040-.0098
(0.10-0.25)
SOIC 16-Lead Plastic Package
Forward Tape & Reel
Reverse Tape & Reel
.0532-.0688
(1.35-1.75)
.xx = ± 0.02 (.x = ±0.5)
-B-
Min.
-C-
Fax +44 (1344) 300 020
Package
0°-8°
(0.40-1.27)
.2284-.2440
(5.80-6.20)
.016-.050
.010(0.25) M B M
.0099-.0196 x 45°
(0.25-0.50)
1.2:1
Typ.
Chamfer
1.2
1.5
1.6
1.8
12
18
25
20
28
45
68
40
50
AT-220
.0075-.0098
(0.19-0.25)
V3.00
Max
1.4
1.7
1.8
2.1
1