Skyworks Solutions, Inc. [781] 376-3000 •Fax [781] 376-3100 •Email sales@skyworksinc.com •www.skyworksinc.com 1
Specifications subject to change without notice. 11/02A
27–31 GHz GaAs MMIC
Driver Amplifier
Features
■Single Bias Supply Operation (6 V)
■14 dB Typical Small Signal Gain
■16 dBm Typical P1 dB Output Power
at 28 GHz
■0.25 µm Ti/Pd/Au Gates
■100% On-Wafer RF and DC Testing
■100% Visual Inspection to MIL-STD-883
MT 2010
Chip Outline
AA028P2-00
Description
Skyworks’ two-stage reactively-matched 27–31 GHz GaAs
MMIC driver amplifier has typical small signal gain of
14 dB with a typical P1 dB of 16 dBm at 28 GHz. The chip
uses Skyworks’ proven 0.25 µm MESFET technology, and
is based upon MBE layers and electron beam lithography
for the highest uniformity and repeatability. The FETs
employ surface passivation to ensure a rugged, reliable
part with through-substrate via holes and gold-based
backside metallization to facilitate a conductive epoxy die
attach process. All chips are screened for gain, output
power and S-parameters prior to shipment for guaranteed
performance. Designed for 27–31 GHz LMDS and digital
radio bands.
Parameter Condition Symbol Min. Typ.3Max. Unit
Drain Current IDS 80 110 mA
Small Signal Gain F = 27–31 GHz G 12 14 dB
Input Return Loss F = 27–31 GHz RLI-11 -6 dB
Output Return Loss F = 27–31 GHz RLO-12 -6 dB
Output Power at 1 dB Gain Compression F = 28 GHz P1 dB 13 16 dBm
Saturated Output Power F = 28 GHz PSAT 14 17 dBm
Two-Tone Output Third-Order Intercept1F = 28 GHz OIP3 26.5 dBm
Thermal Resistance2ΘJC 198 °C/W
Electrical Specifications at 25°C (VDS = 6 V)
0.000
0.000
0.617
2.180
1.380
0.450
1.313
Dimensions indicated in mm.
All DC (V) pads are 0.1 x 0.1 mm and RF In, Out pads are 0.07 mm wide.
Chip thickness = 0.1 mm.
Characteristic Value
Operating Temperature (TC) -55°C to +90°C
Storage Temperature (TST) -65°C to +150°C
Bias Voltage (VD)7 V
DC
Power In (PIN) 16 dBm
Junction Temperature (TJ) 175°C
Absolute Maximum Ratings
1. Not measured on a 100% basis.
2. Calculated value based on measurement of discrete FET.
3. Typical represents the median parameter value across the specified
frequency range for the median chip.
27–31 GHz GaAs MMIC Driver Amplifier AA028P2-00
2Skyworks Solutions, Inc. [781] 376-3000 •Fax [781] 376-3100 •Email sales@skyworksinc.com •www.skyworksinc.com
Specifications subject to change without notice. 11/02A
-40
-30
-20
-10
0
10
20
26 28 30 32
S11
S12
S21
S22
Frequency (GHz)
Typical Small Signal Performance
S-Parameters (VDS = 6 V)
(dB)
Two-Tone Output Third-Order
Intercept @ 28 GHz
VDS (V)
OIP3 (dBm)
4.0 4.5 5.0 5.5 6.0
20
21
22
23
24
25
26
27
Two-Tone Output Third-Order
Intercept @ VDS = 6 V
Frequency (GHz)
OIP3 (dBm)
22
23
24
25
26
27
28
27 28 29 30 31
Output Power and Relative Third-Order
Intermodulation Products
F = 28 GHz, VDS = 6 V
PIN (dBm)
POUT (dBm)
IM3 (dBc)
-3
-2
-1
0
1
2
3
4
5
6
7
8
-16 -15 -14 -13 -12 -11 -10 -9 -8 -7
-52
-50
-48
-46
-44
-42
-40
-38
-36
-34
-32
-30
IM3
POUT
Typical Performance Data
27–31 GHz GaAs MMIC Driver Amplifier AA028P2-00
Skyworks Solutions, Inc. [781] 376-3000 •Fax [781] 376-3100 •Email sales@skyworksinc.com •www.skyworksinc.com 3
Specifications subject to change without notice. 11/02A
6 V
RF IN RF OUT
.01 µF 50 pF
Bias Arrangement
Detail A
RF IN RF OUT
V
See
Detail A
Circuit Schematic
For biasing on, adjust VDS from zero to the desired value
(6 V recommended). For biasing off, reverse the biasing on procedure.
