XU1000 데이터 시트보기 (PDF) - Mimix Broadband
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XU1000 Datasheet PDF : 5 Pages
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17.0-27.0 GHz GaAs MMIC
Transmitter
May 2005 - Rev 13-May-05
U1000
App Note [1] Biasing - As shown in the bonding diagram, this device has a single gain stage. Nominal bias is
Vd=3V, Id=23mA. Power bias may be as high as Vd=5.5V, Id=45mA. 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.
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
77 deg Celsius
97 deg Celsius
117 deg Celsius
Rth
MTTF Hours
FITs
-
319.5° C/W
-
2.45E+12
1.39E+11
1.05E+10
4.07E-04
7.21E-03
9.51E-02
Bias Conditions: Vd=3.0V, Id=23 mA
Backplate
Temperature
55 deg Celsius
75 deg Celsius
95 deg Celsius
Channel
Temperature
Rth
MTTF Hours
133 deg Celsius
153 deg Celsius
173 deg Celsius
-
306.7° C/W
-
2.76E+09
3.32E+08
4.83E+07
Bias Conditions: Vd=5.5V, Id=46 mA
FITs
3.62E-01
3.01E+00
2.07E+01
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 3 of 5
Characteristic Data and Specifications are subject to change without notice. ©2005 Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
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