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HMC798LC4
v03.0110
GaAs MMIC SUB-HARMONIC SMT MIXER, 24 - 34 GHz
Typical Applications
The HMC798LC4 is ideal for: * Point-to-Point Radios
Features
Integrated LO Amplifier: +4 dBm Input Sub-Harmonically Pumped (x2) LO Wideband IF: DC - 4 GHz Single Positive Supply: +5V @ 95mA 24 Lead 4x4mm SMT Package: 16mm2
10
MIXERS - SUB-HARMONIC - SMT
* Point-to-Multi-Point Radios & VSAT * Test Equipment & Sensors * Military End-Use * SAT COM
Functional Diagram
General Description
The HMC798LC4 is a 24 - 34 GHz Sub-harmonically Pumped (x2) MMIC Mixer with an integrated LO amplifier in a leadless RoHS compliant SMT package. The 2LO to RF isolation is excellent at 30 dB, eliminating the need for additional filtering. The LO amplifier is a single bias +5V design with a nominal +4 dBm drive requirement. The RF and LO ports are matched to 50 Ohms for ease of use while the IF covers DC to 4 GHz. The HMC798LC4 eliminates the need for wire bonding, allowing use of surface mount manufacturing techniques.
Electrical Specifi cations, TA = +25C, Vcc = 5V
Parameter Min. Frequency Range, RF Frequency Range, LO Frequency Range, IF Conversion Loss 2LO to RF Isolation 2LO to IF Isolation IP3 (Input) 1 dB Compression (Input) Supply Current (Idd) 17 25 IF = 1 GHz LO = 4 dBm Typ. 24 - 29.5 12 - 16 DC - 4 11 30 45 20 10 95 125 19 13 20 Max. Min. IF = 1 GHz LO = 4 dBm Typ. 29.5 - 34 13.5 - 17.75 DC - 4 10 25 35 22 12 95 125 12 Max. GHz GHz GHz dB dB dB dBm dBm mA Units
*Unless otherwise noted, all measurements performed as upconverter, IF= 1 GHz, LO = 4 dBm
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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
HMC798LC4
v03.0110
GaAs MMIC SUB-HARMONIC SMT MIXER, 24 - 34 GHz
Conversion Gain vs. Temperature, LSB
-4 -6 CONVERSION GAIN (dB) -8 -10 -12 -14 -16 -18 -20 23 24 25 26 27 28 29 30 31 FREQUENCY (GHz) 32 33 34 35
+25 C +85 C -40 C
Conversion Gain vs. Temperature, USB
-4 -6 CONVERSION GAIN (dB) -8 -10 -12
10
MIXERS - SUB-HARMONIC - SMT
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+25 C +85 C -40 C
-14 -16 -18 -20 23 24 25 26
27 28 29 30 31 FREQUENCY (GHz)
32
33
34
35
Conversion Gain vs. LO Drive, LSB
-4 -6 CONVERSION GAIN (dB) -8 -10 -12 -14 -16 -18 -20 23 24 25 26 27 28 29 30 31 FREQUENCY (GHz) 32 33 34 35
6 dBm 4 dBm 2 dBm
Isolations
0 -10 ISOLATION (dB) -20 -30 -40 -50 -60 -70 23 24 25 26 27 28 29 30 31 FREQUENCY (GHz) 32 33 34 35
2LO/RF 2LO/IF LO/RF IF/RF LO/IF
Input IP3 vs. LO Drive
24 22 20 IIP3 (dBm) 18 16 14 12 10 23 24 25 26 27 28 29 30 31 FREQUENCY (GHz) 32 33 34 35
6 dBm 4 dBm 2 dBm
Input IP3 vs. Temperature
24 22 20 IIP3 (dBm) 18 16 14 12 10 23 24 25 26 27 28 29 30 31 FREQUENCY (GHz) 32 33 34 35
+25 C +85 C -40 C
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
HMC798LC4
v03.0110
GaAs MMIC SUB-HARMONIC SMT MIXER, 24 - 34 GHz
Input IP2 vs. LO Drive
80 75
Input IP2 vs. Temperature
80 75 70 IIP2 (dBm)
6 dBm 4 dBm 2 dBm
IIP2 (dBm)
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MIXERS - SUB-HARMONIC - SMT
70 65 60 55 50 45 40 23 24 25 26 27 28 29 30 31 FREQUENCY (GHz) 32 33 34 35
65 60 55 50 45 40 23 24 25 26 27 28 29 30 31 FREQUENCY (GHz) 32 33 34 35
+25 C +85 C -40 C
Input P1dB vs. Temperature, LSB
18 16 14 P1dB (dBm)
Input P1dB vs. Temperature, USB
18 16 14 P1dB (dBm) 12 10 8 6 4 2 0
+25 C +85 C -40 C
12 10 8 6 4 2 0 24 25 26 27 28 29 30 31 FREQUENCY (GHz) 32 33 34
+25 C +85 C -40 C
24
25
26
27
28 29 30 31 FREQUENCY (GHz)
32
33
34
Conversion Gain vs. IF Frequency, LSB
-4 -6 CONVERSION GAIN (dB) -8 -10 -12 -14 -16 -18 -20 23 24 25 26 27 28 29 30 31 32 RF FREQUENCY (GHz) 33 34 35
1000 MHz 2000 MHz 3750 MHz
Conversion Gain vs. IF Frequency, USB
-4 -6 CONVERSION GAIN (dB) -8 -10 -12 -14 -16 -18 -20 23 24 25 26 27 28 29 30 31 32 RF FREQUENCY (GHz) 33 34 35
1000 MHz 2000 MHz 3750 MHz
* Two-tone input power = 0 dBm each tone, 1 MHz spacing.
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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
HMC798LC4
v03.0110
GaAs MMIC SUB-HARMONIC SMT MIXER, 24 - 34 GHz
IF Return Loss
0
RF Return Loss
0
25 C 85 C -40 C
-4 RETURN LOSS (dB) RETURN LOSS (dB)
-4
-8
-8
10
36 38 40
-16
+25 C +85 C -40 C
-16
-20 0 1 2 3 FREQUENCY (GHz) 4 5
-20 20 22 24 26 28 30 32 34 FREQUENCY (GHz)
LO Return Loss
0 -5 RETURN LOSS (dB) -10 -15 -20 -25 -30 8 9 10 11 12 13 14 15 16 FREQUENCY (GHz) 17 18 19 20
+25 C +85 C -40 C
MxN Spurious Outputs @ RF Port, Vdd = 5V
nLO mIF -3 -2 -1 0 1 2 3 2 68 53 0 1 1 54 66 71 49 31 45 66 31 65 66 32 1 0
IF = 2 GHz @ -10 dBm LO = 15 GHz @ 4 dBm All values in dBc below IF power level (2LO - 1IF) Measured as upconverter
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
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MIXERS - SUB-HARMONIC - SMT
-12
-12
HMC798LC4
v03.0110
GaAs MMIC SUB-HARMONIC SMT MIXER, 24 - 34 GHz
Absolute Maximum Ratings
RF / IF Input (Vdd = +5V) LO Drive (Vdd = +5V) +13 dBm +10 dBm 5.5V 175 C 0.75 mW 119 C/W -65 to +150 C -40 to +85 C
10
MIXERS - SUB-HARMONIC - SMT
Vdd Channel Temperature Continuous Pdiss (Ta = 85 C) (derate 8.33 mW/C above 85 C) Thermal Resistance (junction to ground paddle) Storage Temperature Operating Temperature
ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS
Outline Drawing
NOTES: 1. PACKAGE BODY MATERIAL: ALUMINA. 2. LEAD AND GROUND PADDLE PLATING: GOLD FLASH OVER 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.
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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
HMC798LC4
v03.0110
GaAs MMIC SUB-HARMONIC SMT MIXER, 24 - 34 GHz
Pin Descriptions
Pin Number 1, 4, 6, 7, 9, 12 - 14, 16, 18, 19, 24 2, 3, 10, 17, 20 - 23 Function GND Description These pins and package bottom must be connected to RF/DC ground. No connection required. The pins are not connected internally; however, all data shown herein was measured with these pins connected to RF/DC ground externally. This pin is DC coupled and should be DC blocked externally using a series capacitor whose value has been chosen to pass the necessary IF frequency range. Any applied DC voltage to this pin will result in die non-function and possible die failure. Interface Schematic
N/C
10
MIXERS - SUB-HARMONIC - SMT
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5
IF
8
RF
This pin is DC coupled and matched to 50 Ohms.
11
Vcc
Power supply for the LO Amplifier.
15
LO
This pin is DC blocked and matched to 50 Ohms.
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
HMC798LC4
v03.0110
GaAs MMIC SUB-HARMONIC SMT MIXER, 24 - 34 GHz
Evaluation PCB
10
MIXERS - SUB-HARMONIC - SMT
List of Materials for Evaluation PCB 126601 [1]
Item J1 - J3 J2, J3 J4, J5 C1 C2 C3 U1 PCB [2] Description PCB Mount SMA RF Connector PCB Mount SRI K Connector DC Pin 100 pF Capacitor, 0402 Pkg. 10,000 pF Capacitor, 0603 Pkg. 4.7 F Tantalum Capacitor, Case A HMC798LC4 Mixer 126598 Evaluation PCB
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 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 board should be mounted to an appropriate heat sink. The evaluation circuit board shown is available from Hittite upon request.
[1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Arlon 25FR or Rogers 4350
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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
HMC798LC4
v03.0110
GaAs MMIC SUB-HARMONIC SMT MIXER, 24 - 34 GHz
Notes:
10
MIXERS - SUB-HARMONIC - SMT
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
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