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,
T
A
= +25°C, 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
10 - 346
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
+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
10 - 34
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)
10
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.
10 - 348
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
10 - 34
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.
10 - 350
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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