MIXERS - I/Q MIXERS, IRMS & RECEIVERS - SMT
8
8 - 124
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC525LC4
GaAs MMIC I/Q MIXER
4 - 8.5 GHz
v02.1208
General Description
FeaturesTypical Applications
Electrical Speci cations, TA = +25° C, IF= 100 MHz, LO = +15 dBm*
Parameter Min. Typ. Max. Min. Typ. Max. Units
Frequency Range, RF/LO 4.0 - 8.5 5.5 - 7.5 GHz
Frequency Range, IF DC - 3.5 DC - 3.5 GHz
Conversion Loss (As IRM) 8 11 7.5 9.5 dB
Image Rejection 20 35 30 40 dB
1 dB Compression (Input) +14 +15 dBm
LO to RF Isolation 33 45 40 50 dB
LO to IF Isolation 14 20 17 20 dB
IP3 (Input) +23 +23 dBm
Amplitude Balance 0.3 0.2 dB
Phase Balance 8 4 Deg
* Unless otherwise noted, all measurements performed as downconverter.
Functional Diagram
The HMC525LC4 is ideal for:
• Point-to-Point and Point-to-Multi-Point Radio
• VSAT
Wide IF Bandwidth: DC - 3.5 GHz
Image Rejection: 40 dB
LO to RF Isolation: 50 dB
High Input IP3: +23 dBm
RoHS Compliant 4x4 mm SMT Package
The HMC525LC4 is a compact I /Q MMIC mixer in
a leadless “Pb free” RoHS compliant SMT package,
which can be used as either an Image Reject Mixer
or a Single Sideband Upconverter. The mixer utilizes
two standard Hittite double balanced mixer cells and
a 90 degree hybrid fabricated in a GaAs MESFET
process. A low frequency quadrature hybrid was used
to produce a 100 MHz USB IF output. This product
is a much smaller alternative to hybrid style Image
Reject Mixers and Single Sideband Upconverter
assemblies. The HMC525LC4 eliminates the need
for wire bonding allowing use of surface mount
manufacturing techniques.
MIXERS - I/Q MIXERS, IRMS & RECEIVERS - SMT
8
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Conversion Gain vs. Temperature Image Rejection vs. Temperature
Conversion Gain vs. LO Drive Return Loss
Data taken As IRM With External IF Hybrid
-20
-15
-10
-5
0
3456789
+25C
+85C
-55C
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
Input P1dB vs. Temperature Input IP3 vs. LO Drive
-25
-20
-15
-10
-5
0
3456789
RF
LO
RETURN LOSS (dB)
FREQUENCY (GHz)
0
5
10
15
20
25
30
3456789
LO = +13 dBm
LO = +15 dBm
LO = +17 dBm
LO = +19 dBm
IP3 (dBm)
RF FREQUENCY (GHz)
0
4
8
12
16
20
3456789
+25C
+85C
-55C
P1dB (dBm)
RF FREQUENCY (GHz)
-20
-15
-10
-5
0
3456789
+13 dBm
+15 dBm
+17 dBm
+19 dBm
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
0
10
20
30
40
50
60
3456789
+25C
+85C
-55C
IMAGE REJECTION (dB)
RF FREQUENCY (GHz)
HMC525LC4
v02.1208
GaAs MMIC I/Q MIXER
4 - 8.5 GHz
MIXERS - I/Q MIXERS, IRMS & RECEIVERS - SMT
8
8 - 126
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Isolations
Amplitude Balance vs. LO Drive
IF Bandwidth*
Phase Balance vs. LO Drive
Quadrature Channel Data Taken Without IF Hybrid
Upconverter Performance Conversion
Gain vs. LO Drive
Upconverter Performance Sideband
Rejection vs. LO Drive
* Conversion gain data taken with external IF hybrid
-20
-15
-10
-5
0
5
10
3456789
LO = +13 dBm
LO = +15 dBm
LO = +17 dBm
LO = +19 dBm
PHASE BALANCE (degrees)
RF FREQUENCY (GHz)
-20
-15
-10
-5
0
3456789
LO = +13 dBm
LO = +15 dBm
LO = +17 dBm
LO = +19 dBm
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
3456789
LO = +13 dBm
LO = +15 dBm
LO = +17 dBm
LO = +19 dBm
SIDEBAND REJECTION (dBc)
RF FREQUENCY (GHz)
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
3456789
LO = +13 dBm
LO = +15 dBm
LO = +17 dBm
LO = +19 dBm
AMPLITUDE BALANCE (dB)
RF FREQUENCY (GHz)
-25
-20
-15
-10
-5
0
0.5 1 1.5 2 2.5 3 3.5
RETURN LOSS
CONVERSION GAIN
RESPONSE (dB)
IF FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
3456789
ISOLATION (dB)
RF FREQUENCY (GHz)
LO/RF
RF/IF1
LO/IF1
RF/IF2
LO/IF2
HMC525LC4
v02.1208
GaAs MMIC I/Q MIXER
4 - 8.5 GHz
MIXERS - I/Q MIXERS, IRMS & RECEIVERS - SMT
8
8 - 127
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Harmonics of LO
LO Freq. (GHz) nLO Spur at RF Port
1234
3.5 40 40 54 50
4.5 43 45 58 53
5.5 51 57 48 67
6.5 59 63 64 56
7.5 48 6 6 6 4 6 2
8.5 44 65 60 67
LO = +15 dBm
Values in dBc below input LO level measured at RF Port.
MxN Spurious Outputs
nLO
mRF01234
0xx-11322351
1320425166
28962746589
3 8989898289
4 8989898989
RF = 5.6 GHz @ -10 dBm
LO = 5.5 GHz @ +15 dBm
Data taken without IF hybrid
All values in dBc below IF power level
Absolute Maximum Ratings
RF / IF Input +20 dBm
LO Drive +27 dBm
Channel Temperature 150°C
Continuous Pdiss (T=85°C)
(derate 9.7 mW/°C above 85°C) 631 mW
Thermal Resistance (RTH)
(junction to die bottom) 103 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -55 to +85 °C
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: ALUMINA
2. LEAD AND GROUND PADDLE PLATING: 30 - 80 MICROINCHES
GOLD OVER 50 MICROINCHES MINIMUM NICKLE
3. DIMENSIONS ARE IN INCHES [MILLIMETERS]
4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm DATUM
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
HMC525LC4
v02.1208
GaAs MMIC I/Q MIXER
4 - 8.5 GHz
MIXERS - I/Q MIXERS, IRMS & RECEIVERS - SMT
8
8 - 128
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Pin Number Function Description Interface Schematic
1, 2, 6-8, 10,
13, 17-24 N/C No connection required. These pins may be connected
to RF/DC ground without affecting performance.
3, 5, 12, 14,
16 GND These pins and package bottom must be connected
to RF/DC ground.
4RF This pin is AC coupled and matched to
50 Ohms from 4 to 8.5 GHz.
9IF1
This pin is DC coupled. For applications
not requiring operation to DC, this port should be
DC blocked externally using a series capacitor whose
value has been chosen to pass the necessary IF
frequency range. For operation to DC, this pin must not
source/sink more than 3mA of current or part non-func-
tion and possible part failure will result.
11 IF2
15 LO This pin is AC coupled and matched to
50 Ohms from 4 to 8.5 GHz.
Pin Descriptions
HMC525LC4
v02.1208
GaAs MMIC I/Q MIXER
4 - 8.5 GHz
MIXERS - I/Q MIXERS, IRMS & RECEIVERS - SMT
8
8 - 129
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Evaluation PCB
The circuit board used in the nal application should
use RF circuit design techniques. Signal lines should
have 50 ohm impedance while the package ground
leads and exposed paddle should be connected
directly to the ground plane similar to that shown.
A sufficient number of via holes should be used to
connect the top and bottom ground planes. The
evaluation circuit board shown is available from
Hittite upon request.
List of Materials for Evaluation PCB 109998 [1]
Item Description
J1 - J2 PCB Mount SMA RF Connector, SRI
J3 - J4 PCB Mount SMA Connector, Johnson
U1 HMC525LC4
PCB [2] 109996 Evaluation Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
HMC525LC4
v02.1208
GaAs MMIC I/Q MIXER
4 - 8.5 GHz
