XP1020-BD Datasheet, PDF (4/6 Pages) Mimix Broadband – 11.0-19.0 GHz GaAs MMIC Power Amplifier

11.0-19.0 GHz GaAs MMIC
Power Amplifier
January 2007 - Rev 30-Jan-07
P1020-BD
App Note [1] Biasing - It is recommended to bias each amplifier stage Vd(1,2)=5.0V with Id=380mA. 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 -0.9V. 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 -
All the drain or gate pad (Vd1,2 and Vg) DC bypass capacitors (~100-200 pF) can be combined. Additional DC bypass capacitance
(~0.01 uF) is also recommended to all DC or combination (if gate or drains are tied together) of DC bias pads.
MTTF Graphs
1.00E+09
1.00E+08
1.00E+07
1.00E+06
1.00E+05
1.00E+04
1.00E+03
55
XP1020-BD Vd=5.0 V, Id=380 mA
65
75
85
95
105
115
125
Baseplate Temperature (deg C)
No RF
Pout=+27 dBm
1.00E+05
XP1020-BD Vd=5.0 V, Id=380 mA
1.00E+04
1.00E+03
1.00E+02
1.00E+01
1.00E+00
55
65
75
85
95
105
115
125
Baseplate Temperature (deg C)
No RF
Pout=+27 dBm
80
78
76
74
72
70
68
66
64
62
60
58
56
54
52
50
48
46
44
42
40
55
XP1020-BD Vd=5.0 V, Id=380 mA
65
75
85
95
105
115
125
Baseplate Temperature (deg C)
No RF
Pout=+27 dBm
275
250
225
200
175
150
125
55
XP1020-BD Vd=5.0 V, Id=380 mA
65
75
85
95
105
115
125
Baseplate Temperature (deg C)
No RF
Pout=+27 dBm
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: [phone] Fax: [phone] mimixbroadband.com
Page 4 of 6
Characteristic Data and Specifications are subject to change without notice. ©2007 Mimix Broadband, Inc.
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