MIMIX 20DBL0451

8.0-12.0/16.0-24.0 GHz GaAs MMIC
Active Doubler
20DBL0451
April 2005 - Rev 01-Apr-05
Features
Chip Device Layout
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Excellent Mixer Driver
2-Stage Active Design
Can be Used to Drive XR1002 Receiver
+16 dBm Output Drive
100% On-Wafer RF, DC and Output Power Testing
100% Visual Inspection to MIL-STD-883
Method 2010
General Description
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Absolute Maximum Ratings
Supply Voltage (Vd)
Supply Current (Id)
Gate Bias Voltage (Vg)
Input Power (RF Pin)
Storage Temperature (Tstg)
Operating Temperature (Ta)
Channel Temperature (Tch)
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Mimix Broadband’s two stage 8.0-12.0/16.0-24.0 GHz
GaAs MMIC doubler has a +16.0 dBm output drive
and is an excellent LO doubler that can be used to
drive fundamental mixer devices. It is also well suited
to drive Mimix's XR1002 receiver device. This MMIC
uses Mimix Broadband’s 0.15 µm GaAs PHEMT device
model technology, and is based upon electron beam
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 Millimeter-wave Point-toPoint Radio, LMDS, SATCOM and VSAT applications.
+6.0 VDC
195 mA
+0.3 VDC
TBD
-65 to +165 OC
-55 to MTTF Table1
MTTF Table 1
(1) Channel temperature affects a device's MTBF. It is
recommended to keep channel temperature as low as
possible for maximum life.
Electrical Characteristics (Ambient Temperature T = 25 oC)
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Parameter
Units
Input Frequency Range (fin)
GHz
Output Frequency Range (fout)
GHz
Input Return Loss (S11)
dB
Output Return Loss (S22)
dB
Fundamental Level at the Output
dBc
RF Input Power (RF Pin)
dBm
Output Power at +12.0 dBm Pin (Pout)
dBm
Drain Bias Voltage (Vd1,2)
VDC
Gate Bias Voltage (Vg1)
VDC
Gate Bias Voltage (Vg2)
VDC
Supply Current (Id1,2) (Vd=3.5V, Vg1=-0.9V, Vg2=-0.3V Typical) mA
Min.
8.0
16.0
-1.2
-1.2
-
Typ.
TBD
TBD
-25.0
+12.0
+16.0
+3.5
-0.9
-0.3
135
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Max.
12.0
24.0
+5.5
+0.1
+0.1
165
Page 1 of 6
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.
8.0-12.0/16.0-24.0 GHz GaAs MMIC
Active Doubler
20DBL0451
April 2005 - Rev 01-Apr-05
Doubler Measurements
0451: Pout (dBm) vs. Fin (GHz)
Pin = 12dBm, VD1 = VD2 = 3.5V, VG1 = -0.9V, VG2 = -0.6 to 0.1V
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20
15
10
, LO Power (dBm)=12, VG2 (V)=-0.6
, LO Power (dBm)=12, VG2 (V)=-0.5
, LO Power (dBm)=12, VG2 (V)=-0.4
, LO Power (dBm)=12, VG2 (V)=-0.3
5
Pout (dBm)
, LO Power (dBm)=12, VG2 (V)=-0.2
, LO Power (dBm)=12, VG2 (V)=-0.1
, LO Power (dBm)=12, VG2 (V)=0
, LO Power (dBm)=12, VG2 (V)=0.1
0
, LO Power (dBm)=12, VG2 (V)=-0.6
, LO Power (dBm)=12, VG2 (V)=-0.5
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, LO Power (dBm)=12, VG2 (V)=-0.4
, LO Power (dBm)=12, VG2 (V)=-0.3
-5
, LO Power (dBm)=12, VG2 (V)=-0.2
, LO Power (dBm)=12, VG2 (V)=-0.1
, LO Power (dBm)=12, VG2 (V)=0
, LO Power (dBm)=12, VG2 (V)=0.1
-10
-20
5
6
7
8
9
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-15
10
11
12
13
14
15
Fin (GHz)
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0451_R11C11: Pout (dBm) vs. Input Frequency (GHz)
Pin = 12dBm, VD1 = VD2 = 3.5V, VG1 = -0.9V, VG2 = -0.3V
20
16
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Pout (2xFin)
12
4
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Output Power (dBm)
8
0
-4
-8
Pout (Fin)
-12
-16
-20
8
9
10
11
12
13
Input Frequency (GHz)
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 2 of 6
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.
8.0-12.0/16.0-24.0 GHz GaAs MMIC
Active Doubler
20DBL0451
April 2005 - Rev 01-Apr-05
Mechanical Drawing
0.503 0.683
1.085
0.884
(0.020) (0.027) (0.035) (0.043)
2
3
4
5
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0.890
(0.035)
1
6
0.356
(0.014)
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0.356
(0.014)
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0.0
0.0
1.620
(0.064)
(Note: Engineering designator is 20DBL0451)
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Units: millimeters (inches) Bond pad dimensions are shown to center of bond pad.
Thickness: 0.110 +/- 0.010 (0.0043 +/- 0.0004), Backside is ground, Bond Pad/Backside Metallization: Gold
All DC Bond Pads are 0.100 x 0.100 (0.004 x 0.004). All RF Bond Pads are 0.100 x 0.200 (0.004 x 0.008)
Bond pad centers are approximately 0.109 (0.004) from the edge of the chip.
Dicing tolerance: +/- 0.005 (+/- 0.0002). Approximate weight: 0.891 mg.
Bond Pad #1 (RF In)
Bond Pad #2 (Vg1)
Vg2
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Vg1
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Bias Arrangement
2
RF In
1
Bond Pad #3 (Vg2)
Bond Pad #4 (Vd1)
3
4
Bond Pad #5 (Vd2)
Bond Pad #6 (RF Out)
Bypass Capacitors - See App Note [2]
Vd1
Vd2
Vg2
Vd1
Vg1
Vd2
5
6
RF Out
RF In
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
RF Out
Page 3 of 6
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.
8.0-12.0/16.0-24.0 GHz GaAs MMIC
Active Doubler
20DBL0451
April 2005 - Rev 01-Apr-05
App Note [1] Biasing - It is recommended to separately bias each doubler stage Vd1 through Vd2 at Vd(1,2)=3.5V with Id1=25mA
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and Id2=110mA. Separate biasing is recommended if the doubler is to be used at high levels of saturation, where gate rectification
will alter the effective gate control voltage. 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 voltages needed to do this are Vg1=-0.9V and Vg2=-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.
App Note [2] Bias Arrangement -
MTTF Tables (TBD)
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For individual Stage Bias (Recommended for doubler applications) -- Each DC pad (Vd1, 2 and Vg1, 2) 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.
These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry.
MTTF Hours
FITs
C/W
E+
E+
deg Celsius
C/W
E+
E+
deg Celsius
C/W
E+
E+
Channel
Temperature
55 deg Celsius
deg Celsius
75 deg Celsius
95 deg Celsius
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Backplate
Temperature
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Bias Conditions: Vd1=Vd2=3.5V, Id1=25 mA, Id2=110 mA
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 4 of 6
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.
8.0-12.0/16.0-24.0 GHz GaAs MMIC
Active Doubler
20DBL0451
April 2005 - Rev 01-Apr-05
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Device Schematic
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Typical Application
XR1002
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RF IN
17.7-19.7 GHz
IF Out
2 GHz
BPF
IR Mixer
AGC Control
Atten=0-12dB
LO(+9.0dBm)
7.85-8.85 GHz
9.85-10.85 GHz
20DBL0451
X2
15.7-17.7 GHz (USB Operation)
19.7-21.7 GHz (LSB Operation)
Mimix Broadband MMIC-based 18.0-24.0 GHz Doubler/Receiver Block Diagram
(Changing LO and IF frequencies as required allows design to operate as high as 24.0 GHz)
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 5 of 6
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.
8.0-12.0/16.0-24.0 GHz GaAs MMIC
Active Doubler
20DBL0451
April 2005 - Rev 01-Apr-05
Handling and Assembly Information
CAUTION! - Mimix Broadband MMIC Products contain gallium arsenide (GaAs) which can be hazardous to the
human body and the environment. For safety, observe the following procedures:
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Do not ingest.
Do not alter the form of this product into a gas, powder, or liquid through burning, crushing, or chemical
processing as these by-products are dangerous to the human body if inhaled, ingested, or swallowed.
Observe government laws and company regulations when discarding this product. This product must be
discarded in accordance with methods specified by applicable hazardous waste procedures.
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Life Support Policy - Mimix Broadband's products are not authorized for use as critical components in life support
devices or systems without the express written approval of the President and General Counsel of Mimix
Broadband. As used herein: (1) Life support devices or systems are devices or systems which, (a) are intended for
surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in
accordance with instructions for use provided in the labeling, can be reasonably expected to result in a
significant injury to the user. (2) A critical component is any component of a life support device or system whose
failure to perform can be reasonably expected to cause the failure of the life support device or system, or to
affect its safety or effectiveness.
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ESD - Gallium Arsenide (GaAs) devices are susceptible to electrostatic and mechanical damage. Die are supplied
in antistatic containers, which should be opened in cleanroom conditions at an appropriately grounded antistatic workstation. Devices need careful handling using correctly designed collets, vacuum pickups or, with care,
sharp tweezers.
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Die Attachment - GaAs Products from Mimix Broadband are 0.100 mm (0.004") thick and have vias through to the
backside to enable grounding to the circuit. Microstrip substrates should be brought as close to the die as
possible. The mounting surface should be clean and flat. If using conductive epoxy, recommended epoxies are
Ablestick 84-1LMI or 84-1LMIT cured in a nitrogen atmosphere per manufacturer's cure schedule. Apply epoxy
sparingly to avoid getting any on to the top surface of the die. An epoxy fillet should be visible around the total
die periphery. If eutectic mounting is preferred, then a fluxless gold-tin (AuSn) preform, approximately 0.001 2
thick, placed between the die and the attachment surface should be used. A die bonder that utilizes a heated
collet and provides scrubbing action to ensure total wetting to prevent void formation in a nitrogen atmosphere
is recommended. The gold-tin eutectic (80% Au 20% Sn) has a melting point of approximately 280 C (Note: Gold
Germanium should be avoided). The work station temperature should be 310 C +- 10 C. Exposure to these
extreme temperatures should be kept to minimum. The collet should be heated, and the die pre-heated to avoid
excessive thermal shock. Avoidance of air bridges and force impact are critical during placement.
Wire Bonding - Windows in the surface passivation above the bond pads are provided to allow wire bonding to
the die's gold bond pads. The recommended wire bonding procedure uses 0.076 mm x 0.013 mm (0.003" x
0.0005") 99.99% pure gold ribbon with 0.5-2% elongation to minimize RF port bond inductance. Gold 0.025 mm
(0.001") diameter wedge or ball bonds are acceptable for DC Bias connections. Aluminum wire should be
avoided. Thermo-compression bonding is recommended though thermosonic bonding may be used providing
the ultrasonic content of the bond is minimized. Bond force, time and ultrasonics are all critical parameters.
Bonds should be made from the bond pads on the die to the package or substrate. All bonds should be as short
as possible.
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 6 of 6
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.