XR1001-BD Datasheet, PDF (5/8 Pages) Mimix Broadband – 33.0-40.0 GHz GaAs MMIC Receiver

33.0-40.0 GHz GaAs MMIC
Receiver
April 2007 - Rev 19-Apr-07
R1001-BD
App Note [1] Biasing - As shown in the bonding diagram, this device is operated with both stages in parallel,
and can be biased for low noise performance or high power performance. Low noise bias is nominally
Vd=3V, Id=30mA and is the recommended bias condition. Power bias may be as high as Vd=5.5V, Id=60mA.
It is also recommended to use active biasing to keep the currents constant as the RF power and temperature
vary; this gives the most reproducible results. Depending on the supply voltage available and the power
dissipation constraints, the bias circuit may be a single transistor or a low power operational amplifier, with
a low value resistor in series with the drain supply used to sense the current. The gate of the pHEMT is
controlled to maintain correct drain current and thus drain voltage. The typical gate voltage needed to do
this is -0.5V. Typically the gate is protected with Silicon diodes to limit the applied voltage. Also, make sure
to sequence the applied voltage to ensure negative gate bias is available before applying the positive drain
supply.
App Note [2] Bias Arrangement - Each DC pad (Vd and Vg) needs to have DC bypass capacitance
(~100-200 pF) as close to the device as possible. Additional DC bypass capacitance (~0.01 uF) is also
recommended.
Note: RF and IF ports are AC coupled (DC blocks on chip), LO port is DC coupled (no DC block on chip.)
MTTF Tables
These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry.
Backplate
Temperature
55 deg Celsius
75 deg Celsius
95 deg Celsius
Channel
Temperature
84 deg Celsius
104 deg Celsius
124 deg Celsius
Rth
MTTF Hours
FITs
-
318.0° C/W
-
7.63E+11
4.79E+10
3.95E+09
1.31E-03
2.09E-02
2.53E-01
Bias Conditions: Vd=3.0V, Id=30 mA
Backplate
Temperature
55 deg Celsius
75 deg Celsius
95 deg Celsius
Channel
Temperature
159 deg Celsius
179 deg Celsius
199 deg Celsius
Rth
MTTF Hours
-
314.8° C/W
-
1.39E+08
2.09E+07
3.67E+06
Bias Conditions: Vd=5.5V, Id=60 mA
FITs
7.18E+00
4.79E+01
2.72E+02
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: [phone] Fax: [phone] mimixbroadband.com
Page 5 of 8
Characteristic Data and Specifications are subject to change without notice. ©2007 Mimix Broadband, Inc.
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