DC-18.0 GHz GaAs MMIC
5-Bit Digital Attenuator
August 2007 - Rev 21-Aug-07
A1000-BD
Features
Chip Device Layout
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
Absolute Maximum Ratings
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 mm2 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.
Supply Voltage (Vss)
Supply Current (Iss)
Input Power (Pin)
-10.0 VDC
10.0 mA
30.0 dBm
Storage Temperature (Tstg) -65 to +165 OC
3
Operating Temperature (Ta) -55 to MTTF Table
3
Channel Temperature (Tch) MTTF Table
(3) Channel temperature affects a device's MTBF. It is
recommended to keep channel temperature as low as
possible for maximum life.
Electrical Characteristics (AmbientTemperatureT = 25 oC)
Parameter
Units
GHz
dB
dB
dB
dB
dBm
dB
Min.
DC
-
-
-
-
24.0
-
-
-
-
-
-
-
-
Typ.
-
Max.
18.0
-
-
-
-
-
-
Frequency Range (f)
Attenuation Range
27.9
5.5
17.0
15.0
25.0
<0.5
<1
<10
<20
15
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
dB
-
-
-
deg
deg
deg
nS
VDC
mA
V
Max Phase Error
Phase Variation @ 10 GHz
Switching Speed
-
45.0
-
-
5
-
Vss
Iss
-7.5
9
Vcontrol High
Vcontrol Low
3.3
0
V
0.8
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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.