19.0-26.0 GHz GaAs Receiver
QFN, 7x7 mm
April 2006 - Rev 10-Apr-06
R1005-QD
App Note [1] Biasing - The device is operated by separately biasing Vd1 and Vd2 with Vd1=4.0V, Id1=130mA and
Vd2=4.0V, Id2=116mA. 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 -0.3V.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.
MTTFTable (TBD)
These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry.
Backplate
Channel
Rth
MTTF Hours
FITs
Temperature
Temperature
55 deg Celsius
75 deg Celsius
95 deg Celsius
deg Celsius
deg Celsius
deg Celsius
C/W
C/W
C/W
E+
E+
E+
E+
E+
E+
Bias Conditions: Vd1=4.0V,Vd2=4.0V, Id1=130 mA, Id2=116 mA
Typical Application
XR1005-QD
BPF
IF Out
2 GHz
LNA
IR Mixer
Coupler
RF IN
21.2-23.6 GHz
AGC Control
LO(+2.0dBm)
9.6-10.8 GHz (USB Operation)
11.6-12.8 GHz (LSB Operation)
Mimix Broadband MMIC-based 19.0-26.0 GHz Receiver Block Diagram
(Changing LO and IF frequencies as required allows design to operate as high as 26.0 GHz)
Mimix Broadband's 19.0-26.0 GHz XR1005-QD GaAs Receiver can be used in saturated radio applications and linear modulation schemes up
to 16 QAM.The receiver can be used in upper and lower sideband applications from 19.0-26.0 GHz.
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Mimix Broadband, Inc., 10795 Rockley Rd., Houston,Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Characteristic Data and Specifications are subject to change without notice. ©2006 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
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