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
MIXERS - SINGLE & DOUBLE BALANCED - SMT
9
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HMC557LC4
GaAs MMIC FUNDAMENTAL
MIXER, 2.5 - 7.0 GHz
v01.1208
General Description
Features
Functional Diagram
Passive Double Balanced Topology
Wide IF Bandwidth: DC - 3 GHz
High LO/RF Isolation: 48 dB
Low Conversion Loss: 7 dB
24 Lead Ceramic 4x4mm SMT Package: 16mm2
Electrical Speci cations, TA = +25° C, IF= 100 MHz, LO= +15 dBm*
Typical Applications
The HMC557LC4 is ideal for:
• WiMAX & Fixed Wireless
• Point-to-Point Radios
• Point-to-Mulit-Point Radios
• Test Equipment & Sensors
• Military End-Use
The HMC557LC4 is a general purpose double
balanced mixer in a leadless RoHS compliant
SMT package that can be used as an upconverter
or downconverter between 2.5 and 7 GHz. This
mixer is fabricated in a GaAs MESFET process,
and requires no external components or matching
circuitry. The HMC557LC4 provides excellent LO to
RF and LO to IF isolation due to optimized balun
structures and operates with LO drive levels as low
as +9 dBm. The RoHS compliant HMC557LC4
eliminates the need for wire bonding, and is compatible
with high volume surface mount manufacturing
techniques.
Parameter Min. Typ. Max. Min. Typ. Max. Units
Frequency Range, RF & LO 2.5 - 5.0 5.0 - 7.0 GHz
Frequency Range, IF DC - 3 DC - 3 GHz
Conversion Loss 7 9.5 8.5 10.5 dB
Noise Figure (SSB) 7 9.5 8.5 10.5 dB
LO to RF Isolation 40 48 40 48 dB
LO to IF Isolation 26 32 25 30 dB
RF to IF Isolation 12 18 20 25 dB
IP3 (Input) 17 22 dBm
IP2 (Input) 50 50 dBm
1 dB Gain Compression (Input) 10 13 dBm
*Unless otherwise noted, all measurements performed as downconverter, IF= 100 MHz.
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
MIXERS - SINGLE & DOUBLE BALANCED - SMT
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Conversion Gain vs. Temperature
@ LO = +15 dBm
Conversion Gain vs. LO Drive
Isolation @ LO = +15 dBm
IF Bandwidth @ LO = +15 dBm
Return Loss @ LO = +15 dBm
Upconverter Performance
Conversion Gain vs. LO Drive
HMC557LC4
v01.1208 GaAs MMIC FUNDAMENTAL
MIXER, 2.5 - 7.0 GHz
-20
-15
-10
-5
0
23456789
+25C
+85C
-40C
CONVERSION GAIN (dB)
FREQUENCY (GHz)
-35
-30
-25
-20
-15
-10
-5
0
23456789
RF
LO
RETURN LOSS (dB)
FREQUENCY (GHz)
-20
-15
-10
-5
0
23456789
+9 dBm
+12 dBm
+15 dBm
+17 dBm
CONVERSION GAIN (dB)
FREQUENCY (GHz)
-35
-30
-25
-20
-15
-10
-5
0
0 0.5 1 1.5 2 2.5 3 3.5 4
IF Return Loss
Conversion Gain
RESPONSE (dB)
FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
23456789
RF/IF
LO/RF
LO/IF
ISOLATION (dB)
FREQUENCY (GHz)
-20
-15
-10
-5
0
23456789
+9 dBm
+12 dBm
+15 dBm
+17 dBm
CONVERSION GAIN (dB)
FREQUENCY (GHz)
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
MIXERS - SINGLE & DOUBLE BALANCED - SMT
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MxN Spurious Outputs
Input IP2 vs. Temperature
@ LO = +15 dBm *
Input IP3 vs. LO Drive *
Input IP3 vs. Temperature
@ LO = +15 dBm *
Input IP2 vs. LO Drive *
* Two-tone input power = -10 dBm each tone, 1 MHz spacing.
Input P1dB vs. Temperature
@ LO = +15 dBm
nLO
mRF01234
0xx-1282552
1170374069
2 7757695677
37777777477
4 7777777777
RF = 5.1 GHz @ -10 dBm
LO = 5 GHz @ +15 dBm
All values in dBc below the IF output power level.
HMC557LC4
v01.1208 GaAs MMIC FUNDAMENTAL
MIXER, 2.5 - 7.0 GHz
0
10
20
30
40
50
60
70
23456789
+25C
+85C
-40C
IP2 (dBm)
FREQUENCY (GHz)
0
5
10
15
20
25
30
23456789
+25C
+85C
-40C
IP3 (dBm)
FREQUENCY (GHz)
6
8
10
12
14
16
23456789
+25C
+85C
-40C
P1dB (dBm)
FREQUENCY (GHz)
0
10
20
30
40
50
60
70
23456789
+9 dBm
+12 dBm
+15 dBm
+17 dBm
IP2 (dBm)
FREQUENCY (GHz)
0
5
10
15
20
25
30
23456789
+9 dBm
+12 dBm
+15 dBm
+17 dBm
IP3 (dBm)
FREQUENCY (GHz)
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
MIXERS - SINGLE & DOUBLE BALANCED - SMT
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Absolute Maximum Ratings
RF / IF Input +25 dBm
LO Drive +25 dBm
Channel Temperature 150 °C
Continuous Pdiss (T = 85 °C)
(derate 5.2 mW/°C above 85 °C) 339 mW
Thermal Resistance
(channel to ground paddle) 192 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: ALUMINA.
2. LEAD AND GROUND PADDLE PLATING:
30-80 MICROINCHES GOLD OVER 50 MICROINCHES MINIMUM NICKEL.
3. DIMENSIONS ARE IN INCHES (MILLIMETERS).
4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
5. CHARACTERS TO BE HELVETICA MEDIUM, .025 HIGH, BLACK INK,
OR LASER MARK LOCATED APPROX. AS SHOWN.
6. PACKAGE WARP SHALL NOT EXCEED 0.05MM DATUM – C –
7. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
8. CLASSIFIED AS MOISTURE SENSITIVITY LEVEL (MSL) 1.
HMC557LC4
v01.1208 GaAs MMIC FUNDAMENTAL
MIXER, 2.5 - 7.0 GHz
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
MIXERS - SINGLE & DOUBLE BALANCED - SMT
9
9 - 314
Pin Number Function Description Interface Schematic
1, 5 - 7,
11 - 14, 18 - 24 N/C
No connection required.
These pins may be connected to RF/DC
ground without affecting performance.
2, 4, 8,
10, 15, 17 GND Package bottom must also be connected to RF/DC ground.
3LO This pin is DC coupled
and matched to 50 Ohms.
9IF
This pin is DC coupled. For applications not requiring opera-
tion 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 or sink more than 2 mA of current or part
non-function and possible part failure will result.
16 RF This pin is DC coupled
and matched to 50 Ohms.
Pin Descriptions
HMC557LC4
v01.1208 GaAs MMIC FUNDAMENTAL
MIXER, 2.5 - 7.0 GHz
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
MIXERS - SINGLE & DOUBLE BALANCED - SMT
9
9 - 315
Evaluation PCB
Item Description
J1 - J2 SRI SMA Connector
J3 Johnson SMA Connector
U1 HMC557LC4 Mixer
PCB [2] 118703 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
The circuit board used in this application should
use RF circuit design techniques. Signal lines
should have 50 ohm impedance while the package
ground leads and exposed paddle should be con-
nected 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 118704 [1]
HMC557LC4
v01.1208 GaAs MMIC FUNDAMENTAL
MIXER, 2.5 - 7.0 GHz
