ALPHA AM028R1-00

26–33 GHz GaAs MMIC
Image Rejection Balanced Mixer
AM028R1-00
Features
Chip Outline
■ Low Conversion Loss, 8 dB
2.155
■ Insensitive to LO Power Variations
OHMIC ADDED 9-4-92
■ Image Rejection, 20 dB
■ No DC Bias Required
1.061
OHMIC ADDED 9-4-92
■ Requires External IF 90° Hybrid
1.563
1.060
Description
0.610
SMHO 05
0.085
2.320
2.008
1.270
1.119
0.381
0.000
0.000
Alpha’s image rejection balanced GaAs Schottky diode
mixer has a typical conversion loss of 8 dB at an LO power
level as low as 11 dBm over the band 26–33 GHz. An
external 90° IF hybrid is required to combine the IF1 and
IF2 signals at the desired IF frequency. The chip uses
Alpha’s proven Schottky diode technology, and is based
upon MBE layers for the highest uniformity and
repeatability. The diodes employ surface passivation to
ensure a rugged, reliable part with through-substrate via
holes and gold-based backside metallization to facilitate
an epoxy die attach process. All chips are screened for
DC diode parameters and lot samples are RF measured
to guarantee performance. This device is recommended
for applications requiring down conversion.
Dimensions indicated in mm.
All pads are ≥ 0.07 mm wide.
Chip thickness = 0.1 mm.
Absolute Maximum Ratings
Characteristic
Value
Operating Temperature
-55°C to +125°C
Storage Temperature
-65°C to +150°C
Total Input Power (RF + LO)
23 dBm
Electrical Specifications at 25°C
Parameter
Symbol
RF and LO Frequency Range
Min.
Typ.2
Max.
Unit
FRF, FLO
26–33
GHz
IF Frequency Range
FIF
0–3
GHz
LO Power Level
dBm
PLO
11–19
Conversion Loss1
LC
8
dB
Image Rejection1
IR
20
dB
RLRF, RLLO
ISOLO-RF
17
dB
18
dB
ISOLO-IF
30
dB
RF Input 1 dB Compression Point1
P1 dB
12
dBm
Individual Diode Series Resistance
RS
RF and LO Return Loss1
LO to RF
Isolation1
LO to IF Isolation1
3.0
Ω
1. Not measured on a 100% basis.
2. Typical represents the median parameter value across the specified
frequency range for the median chip.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 2/00A
1
26–33 GHz GaAs MMIC Image Rejection Balanced Mixer
AM028R1-00
Typical Performance Data
50
Conversion Loss (dB)
40
12
30
LO to RF Isolation
20
10
LO Return Loss
10
8
Conversion Loss
LO to IF Isolation
7
9
11
13
15
17
14
40
12
LO to RF Isolation
10
LO Return Loss
8
10
Conversion Loss
0
25
19
26
27
LO Power (dBm)
28
29
30
31
32
33
34
LO Frequency (GHz)
Performance vs. LO Power
FRF = 30.3 GHz, FLO = 28 GHz, PRF = -10 dBm
Performance vs. LO Frequency
FRF = FLO + 2 GHz, PLO = 12 dBm
25
Image Rejection (dB)
25
Image Rejection (dB)
30
20
6
0
6
50
Return Loss & Isolation (dB)
14
16
Return Loss & Isolation (dB)
LO to IF Isolation
Conversion Loss (dB)
16
20
15
10
5
20
15
10
5
0
0
7
9
11
13
15
17
25
19
LO Power (dBm)
26
27
28
29
30
31
32
33
34
LO Frequency (GHz)
Image Rejection vs. LO Power
FRF = 30.3 GHz, FLO = 28 GHz, PRF = -10 dBm
Image Frequency = 25.7 GHz
Wire Bonding Configuration
Image Rejection vs. LO Frequency
FRF = FLO + 2 GHz, PLO = 12 dBm
Image Frequency = FLO - 2 GHz
Circuit Schematic
90˚ Phase Shifter/Splitter
OHMIC ADDED 9-4-92
0˚ Splitter
OHMIC ADDED 9-4-92
RF
LO
LO
IF1
RF
IF2
SMHO 05
IF1
IF2
IF ports bonded to IF hybrid.
2
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 2/00A