DC-18.0 GHz GaAs MMIC
5-Bit Digital Attenuator
August 2007 - Rev 21-Aug-07
A1000-BD
Chip Device Layout
Features
5-Bit Attenuator
27.9 dB Attenuation Range
24 dBm P1dB Input Compression
0.9 dB LSB
Digital Control (0.0 to 3.3 V)
100% On-Wafer RF, DC and Noise Figure Testing
100% Visual Inspection to MIL-STD-883
Method 2010
General Description
Mimix Broadband’s DC- 18.0 GHz attenuator has an
LSB value of 0.9 dB and is controlled with 5 digital
binary inputs, which meet the LVCMOS specifications.
The 2.4 x 1.6 mm
2
device uses a single supply voltage
of -7.5 V. This MMIC uses Mimix Broadband’s 0.5 µm
GaAs PHEMT device model technology, and is based
upon optical gate lithography to ensure high
repeatability and uniformity. The chip has surface
passivation to protect and provide a rugged part with
backside via holes and gold metallization to allow
either a conductive epoxy or eutectic solder die
attach process. This device is well suited for radar and
applications.
Absolute Maximum Ratings
Supply Voltage (Vss)
Supply Current (Iss)
Input Power (Pin)
Storage Temperature (Tstg)
Operating Temperature (Ta)
Channel Temperature (Tch)
-10.0 VDC
10.0 mA
30.0 dBm
-65 to +165
O
C
-55 to MTTF Table
3
MTTF Table
3
(3) Channel temperature affects a device's MTBF. It is
recommended to keep channel temperature as low as
possible for maximum life.
Electrical Characteristics (Ambient Temperature T = 25
o
C)
Parameter
Frequency Range (f )
Attenuation Range
Insertion Loss @ 10 GHz (S21), Reference Level
Input Return Loss (S11), All States
Output Return Loss (S22), All States
Input Power at 1 dB Compression (P1dB)
RMS Attenuation Error
Max Attenuation Error
RMS Phase Error
Max Phase Error
Phase Variation @ 10 GHz
Switching Speed
Vss
Iss
Vcontrol High
Vcontrol Low
Units
GHz
dB
dB
dB
dB
dBm
dB
dB
deg
deg
deg
nS
VDC
mA
V
V
Min.
DC
-
-
-
-
24.0
-
-
-
-
-
-
-
-
3.3
0
Typ.
-
27.9
5.5
17.0
15.0
25.0
<0.5
<1
<10
<20
15
-
-7.5
9
Max.
18.0
-
-
-
-
-
-
-
-
-
-
45.0
-
-
5
0.8
Mimix Asia, Inc. (a subsidiary of Mimix Broadband, Inc.)
3F, 3-2 Industry East IX Road, Science-Based Industrial Park • Hsinchu, Taiwan, R.O.C
Tel +886-3-567-9680 • Fax +886-3-567-9433 • mimixbroadband.com
Characteristic Data and Specifications are subject to change without notice.
©2007
Mimix Broadband, Inc.
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