HMC258LC3B
v02.1208
GaAs MMIC SUB-HARMONIC
SMT MIXER, 14.5 - 19.5 GHz
Typical Applications
The HMC258LC3B is ideal for:
• Point to Point Radios
Features
Integrated LO Amplifier: 0 dBm Input
Sub-Harmonically Pumped (x2) LO
High 2LO/RF Isolation: >45 dB
Wide IF Bandwidth: DC - 3.5 GHz
No External Matching Required
RoHS Compliant 3x3mm Ceramic SMT Package
8
MIXERS - SUB-HARMONIC - SMT
• VSAT and SATCOM
• Test & Measurement Equipment
• Military & Space
Functional Diagram
General Description
The HMC258LC3B is a 14.5 - 19.5 GHz surface
mount sub-harmonically pumped (x2) MMIC mixer
with an integrated LO amplifier in a SMT leadless
ceramic package. At 45 dB the 2LO to RF isolation
eliminates the need for additional filtering. The LO
amplifier is a single bias (+5V) two stage design with
only 0 dBm drive requirement. The HMC258LC3B
requires no external matching components, making it
ideal for integrated subsystem applications. Utilizing
the HMC258LC3B eliminates the need for wire-
bonding, thereby providing a consistent connection
interface for the customer.
Electrical Specifi cations,
T
A
= +25° C, LO Drive = 0 dBm
Parameter
Min.
Frequency Range, RF
Frequency Range, LO
Frequency Range, IF
Conversion Loss
Noise Figure (SSB)
2LO to RF Isolation
2LO to IF Isolation
IP3 (Input)
1 dB Compression (Input)
Supply Current (Idd)
35
30
IF = 1 GHz
Vdd = +5.0V
Typ.
14.5 - 19.5
7.25 - 10
DC - 3.5
10
10
45
40
5
-3
42
57
14
14
Max.
GHz
GHz
GHz
dB
dB
dB
dB
dBm
dBm
mA
Units
*Unless otherwise noted, all measurements performed as downconverter, IF= 1 GHz.
8-2
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
HMC258LC3B
v02.1208
GaAs MMIC SUB-HARMONIC
SMT MIXER, 14.5 - 19.5 GHz
Conversion Gain vs.
Temperature @ LO = 0 dBm
0
Conversion Gain vs. LO Drive
0
LO = -4dBm
LO = -2dBm
LO = 0dBm
LO = +2dBm
LO = +4dBm
CONVERSION GAIN (dB)
CONVERSION GAIN (dB)
-5
-5
-10
-10
8
19
20
-15
+25C
-40C
+85C
-15
-20
-20
-25
14
15
16
17
18
19
20
RF FREQUENCY (GHz)
-25
14
15
16
17
18
RF FREQUENCY (GHz)
Isolation @ LO = 0 dBm
10
LO/IF
RF & LO Return Loss @ LO = 0 dBm
0
-5
0
LO/RF
ISOLATION (dB)
-10
-20
-30
2LO/IF
RF/IF
-10
-15
-20
-25
LO
RF
-40
-50
2LO/RF
-60
14
-30
15
16
17
18
19
20
0
5
10
15
20
25
RF FREQUENCY (GHz)
FREQUENCY (GHz)
IF Bandwidth @ LO = 0 dBm
0
IF Return Loss @ LO = 0 dBm
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
IF CONVERSION GAIN (dB)
-5
-10
-15
-20
-25
0
1
2
3
4
5
6
IF FREQUENCY (GHz)
0
1
2
3
4
5
6
IF 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
8-3
MIXERS - SUB-HARMONIC - SMT
RETURN LOSS (dB)
HMC258LC3B
v02.1208
GaAs MMIC SUB-HARMONIC
SMT MIXER, 14.5 - 19.5 GHz
Input IP3 vs. LO Drive *
20
-2 dBm
0 dBm
+2 dBm
Input IP2 vs. LO Drive *
60
50
40
-2 dBm
0 dBm
+2 dBm
15
IP3 (dBm)
10
IP2 (dBm)
14
15
16
17
18
19
20
21
22
8
MIXERS - SUB-HARMONIC - SMT
30
20
5
0
10
0
14
15
16
17
18
19
20
21
22
RF FREQUENCY (GHz)
RF FREQUENCY (GHz)
-5
Input P1dB
10
8
Upconverter Performance
Conversion Gain @ LO = 0 dBm
0
4
P1dB (dBm)
2
0
-2
-4
-6
-8
-10
14
15
16
17
18
19
20
21
RF FREQUENCY (GHz)
CONVERSION GAIN (dB)
6
-5
-10
-15
-20
-25
14
15
16
17
18
19
20
21
RF FREQUENCY (GHz)
MxN Spurious Outputs@ LO = 0 dBm
nLO
mRF
1
2
3
4
-4
-3
-2
-1
RF = 18 GHz @ -10 dBm
LO = 8.5 GHz @ 0 dBm
All values in dBc below IF power level.
-2
X
47.1
34.5
66.7
50.1
59.5
32.8
45.4
-4
-6
-8
9
7
5
3
* Two-tone input power = -10 dBm each tone, 1 MHz spacing.
8-4
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
HMC258LC3B
v02.1208
GaAs MMIC SUB-HARMONIC
SMT MIXER, 14.5 - 19.5 GHz
Absolute Maximum Ratings
RF / IF Input (Vdd = +5V)
LO Drive (Vdd = +5V)
Vdd
Continous Pdiss (Ta = 85 °C)
(derate 2.1 mW/°C above 85 °C)
Channel Temperature
Thermal Resistance
(channel to ground paddle)
Storage Temperature
Operating Temperature
+13 dBm
+13 dBm
+5.5V
486 mW
150 °C
133.6 °C/W
-65 to +150 °C
-40 to +85 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
8
MIXERS - SUB-HARMONIC - SMT
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.
8. CLASSIFIED AS MOISTURE SENSITVITY LEVEL (MSL) 1.
Outline Drawing
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
8-5
HMC258LC3B
v02.1208
GaAs MMIC SUB-HARMONIC
SMT MIXER, 14.5 - 19.5 GHz
Pin Description
Pin Number
1, 4, 6,
10, 12
Function
GND
Description
Must be soldered to PCB RF ground.
Interface Schematic
8
MIXERS - SUB-HARMONIC - SMT
2
IF
IF Port. 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 pos-
sible die failure.
Power Supply for the LO Amplifier. An external RF bypass
capacitor of 100 - 330 pF is required as close to the package
as possible.
LO Port. This pin is AC coupled and matched to 50 Ohms.
3
Vdd
5
LO
7-9
N/C
This pin may be connected to the housing
ground or left unconnected.
11
RF
RF Port. This pin is AC coupled and matched to 50 Ohms.
8-6
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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