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For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SUB-HARMONIC - SMT
1
HMC798LC4
v04.0614
GaAs MMIC SUB-HARMONIC
SMT MIXER, 24 - 34 GHz
General Description
Features
Functional Diagram
The HMC798LC4 is a 24 - 34 GHz Sub-harmonically
Pumped (x2) MMIC Mixer with an integrated LO
amplier in a leadless RoHS compliant SMT package.
The 2LO to RF isolation is excellent at 30 dB,
eliminating the need for additional ltering. The
LO amplier 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.
Integrated LO Amplier: +4 dBm Input
Sub-Harmonically Pumped (x2) LO
Wideband IF: DC - 4 GHz
Single Positive Supply: +5V @ 95mA
24 Lead 4x4mm SMT Package: 16mm²
Electrical Specications, TA = +25°C, Vcc = 5V
Typical Applications
The HMC798LC4 is ideal for:
• Point-to-Point Radios
• Point-to-Multi-Point Radios & VSAT
• Test Equipment & Sensors
• Military End-Use
• SATCOM
Parameter
IF = 1 GHz
LO = 4 dBm
IF = 1 GHz
LO = 4 dBm Units
Min. Ty p . Max. Min. Ty p . Max.
Frequency Range, RF 24 - 29.5 29.5 - 34 GHz
Frequency Range, LO 12 - 16 13.5 - 17.75 GHz
Frequency Range, IF DC - 4 DC - 4 GHz
Conversion Loss 11 13 10 12 dB
2LO to RF Isolation 25 30 20 25 dB
2LO to IF Isolation 45 35 dB
IP3 (Input) 17 20 19 22 dBm
1 dB Compression (Input) 10 12 dBm
Supply Current (Idd) 95 125 95 125 mA
*Unless otherwise noted, all measurements performed as upconverter, IF= 1 GHz, LO = 4 dBm
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SUB-HARMONIC - SMT
2
HMC798LC4
v04.0614
GaAs MMIC SUB-HARMONIC
SMT MIXER, 24 - 34 GHz
Conversion Gain vs. Temperature, LSB Conversion Gain vs. Temperature, USB
Conversion Gain vs. LO Drive, LSB Isolations
Input IP3 vs. LO Drive Input IP3 vs. Temperature
-20
-18
-16
-14
-12
-10
-8
-6
-4
23 24 25 26 27 28 29 30 31 32 33 34 35
+25 C
+85 C
-40 C
FREQUENCY (GHz)
CONVERSION GAIN (dB)
-20
-18
-16
-14
-12
-10
-8
-6
-4
23 24 25 26 27 28 29 30 31 32 33 34 35
6 dBm
4 dBm
2 dBm
FREQUENCY (GHz)
CONVERSION GAIN (dB)
10
12
14
16
18
20
22
24
23 24 25 26 27 28 29 30 31 32 33 34 35
6 dBm
4 dBm
2 dBm
FREQUENCY (GHz)
IIP3 (dBm)
-20
-18
-16
-14
-12
-10
-8
-6
-4
23 24 25 26 27 28 29 30 31 32 33 34 35
+25 C
+85 C
-40 C
FREQUENCY (GHz)
CONVERSION GAIN (dB)
-70
-60
-50
-40
-30
-20
-10
0
23 24 25 26 27 28 29 30 31 32 33 34 35
2LO/RF
2LO/IF
LO/RF
IF/RF
LO/IF
FREQUENCY (GHz)
ISOLATION (dB)
10
12
14
16
18
20
22
24
23 24 25 26 27 28 29 30 31 32 33 34 35
+25 C
+85 C
-40 C
FREQUENCY (GHz)
IIP3 (dBm)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SUB-HARMONIC - SMT
3
HMC798LC4
v04.0614
GaAs MMIC SUB-HARMONIC
SMT MIXER, 24 - 34 GHz
Input IP2 vs. LO Drive Input IP2 vs. Temperature
Input P1dB vs. Temperature, LSB Input P1dB vs. Temperature, USB
* Two-tone input power = 0 dBm each tone, 1 MHz spacing.
Conversion Gain vs. IF Frequency, USB
Conversion Gain vs. IF Frequency, LSB
40
45
50
55
60
65
70
75
80
23 24 25 26 27 28 29 30 31 32 33 34 35
6 dBm
4 dBm
2 dBm
FREQUENCY (GHz)
IIP2 (dBm)
0
2
4
6
8
10
12
14
16
18
24 25 26 27 28 29 30 31 32 33 34
+25 C
+85 C
-40 C
FREQUENCY (GHz)
P1dB (dBm)
40
45
50
55
60
65
70
75
80
23 24 25 26 27 28 29 30 31 32 33 34 35
+25 C
+85 C
-40 C
FREQUENCY (GHz)
IIP2 (dBm)
0
2
4
6
8
10
12
14
16
18
24 25 26 27 28 29 30 31 32 33 34
+25 C
+85 C
-40 C
FREQUENCY (GHz)
P1dB (dBm)
-20
-18
-16
-14
-12
-10
-8
-6
-4
23 24 25 26 27 28 29 30 31 32 33 34 35
1000 MHz
2000 MHz
3750 MHz
RF FREQUENCY (GHz)
CONVERSION GAIN (dB)
-20
-18
-16
-14
-12
-10
-8
-6
-4
23 24 25 26 27 28 29 30 31 32 33 34 35
1000 MHz
2000 MHz
3750 MHz
RF FREQUENCY (GHz)
CONVERSION GAIN (dB)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SUB-HARMONIC - SMT
4
HMC798LC4
v04.0614
GaAs MMIC SUB-HARMONIC
SMT MIXER, 24 - 34 GHz
RF Return Loss
LO Return Loss
IF Return Loss
MxN Spurious Outputs
@ RF Port, Vdd = 5V
nLO
mIF 2 1 0
-3 68
-2 53 71 66
-1 049 32
0 1 31
1 1 45 31
254 66 65
366
IF = 2 GHz @ -10 dBm
LO = 15 GHz @ 4 dBm
All values in dBc below IF power level (2LO - 1IF)
Measured as upconverter
-20
-16
-12
-8
-4
0
20 22 24 26 28 30 32 34 36 38 40
25 C
85 C
-40 C
FREQUENCY (GHz)
RETURN LOSS (dB)
-20
-16
-12
-8
-4
0
012345
+25 C
+85 C
-40 C
FREQUENCY (GHz)
RETURN LOSS (dB)
-30
-25
-20
-15
-10
-5
0
8 9 10 11 12 13 14 15 16 17 18 19 20
+25 C
+85 C
-40 C
FREQUENCY (GHz)
RETURN LOSS (dB)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SUB-HARMONIC - SMT
5
HMC798LC4
v04.0614
GaAs MMIC SUB-HARMONIC
SMT MIXER, 24 - 34 GHz
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.
Absolute Maximum Ratings
RF / IF Input (Vdd = +5V) +13 d Bm
LO Drive (Vdd = +5V) +10 d Bm
Vdd 5.5V
Channel Temperature 175 °C
Continuous Pdiss (Ta = 85 °C)
(derate 8.33 mW/°C above 85 °C) 0.75 mW
Thermal Resistance
(junction to ground paddle) 119 °C / W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Package Information
Part Number Package Body Material Lead Finish MSL Rating Package Marking [2]
HMC798LC4 Alumina, White Gold over Nickel MSL3 [1] H798
XXXX
[1] Max peak reow temperature of 260 °C
[2] 4-Digit lot number XXXX
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SUB-HARMONIC - SMT
6
HMC798LC4
v04.0614
GaAs MMIC SUB-HARMONIC
SMT MIXER, 24 - 34 GHz
Pin Descriptions
Pin Number Function Description Interface Schematic
1, 4, 6, 7, 9,
12 - 14, 16, 18,
19, 24
GND These pins and package bottom must be
connected to RF/DC ground.
2, 3, 10, 17,
20 - 23 N/C
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.
5IF
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.
8RF This pin is DC coupled
and matched to 50 Ohms.
11 Vcc Power supply for the LO Amplier.
15 LO This pin is DC blocked
and matched to 50 Ohms.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SUB-HARMONIC - SMT
7
HMC798LC4
v04.0614
GaAs MMIC SUB-HARMONIC
SMT MIXER, 24 - 34 GHz
Evaluation PCB
Item Description
J1 - J3 PCB Mount SMA RF Connector
J2, J3 PCB Mount SRI K Connector
J4, J5 DC Pin
C1 100 pF Capacitor, 0402 Pkg.
C2 10,000 pF Capacitor, 0603 Pkg.
C3 4.7 µF Tantalum Capacitor, Case A
U1 HMC798LC4 Mixer
PCB [2] 126598 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR or 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 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.
List of Materials for Evaluation PCB 126601 [1]
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
MIXERS - SUB-HARMONIC - SMT
8
HMC798LC4
v04.0614
GaAs MMIC SUB-HARMONIC
SMT MIXER, 24 - 34 GHz
Notes:
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Analog Devices Inc.:
HMC798LC4TR 126601-HMC798LC4 HMC798LC4 HMC798LC4TR-R5