HMC285
/
285E
v02.0907
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
Typical Applications
The HMC285 / HMC285E is ideal for:
• PCS
• W-CDMA
• 2.4 GHz ISM
Features
No External Components Required
LO / RF Isolation: 30 dB
Input IP3: +21 dBm
Ultra Small SOT26 Package
8
MIXERS - SMT
• MMDS
Functional Diagram
General Description
The HMC285 & HMC285E are ultra miniature single
balanced mixers in 6 lead plastic surface mount SOT26
packages. This passive MMIC mixer is constructed of
GaAs Schottky diodes and a novel planar transformer
balun on the chip. The RF port is balanced via the
MMIC balun while the LO port is connected directly
to the diodes. The consistent MMIC performance will
improve system operation without the need for exter-
nal components. The SOT26 package is the small-
est footprint available for a complete single-balanced
mixer, 0.118” x 0.118” (3.0mm x 3.0mm).
Electrical Specifi cations,
T
A
= +25° C, As a Function of IF Frequency
Parameter
Min.
Frequency Range, RF & LO
Frequency Range, IF
Conversion Loss
Noise Figure (SSB)
LO to RF Isolation
LO to IF Isolation
IP3 (Input)
1 dB Compression (Input)
20
11
17
7
LO = +10 dBm
IF = 100 MHz
Typ.
2 - 3.5
DC - 0.9
9
9
30
20
21
11
11
11
25
14
16
6
Max.
Min.
LO = +10 dBm
IF = 400 MHz
Typ.
1.7 - 2.8
DC - 0.9
9.5
9.5
35
20
20
10
11.5
11.5
Max.
GHz
GHz
dB
dB
dB
dB
dBm
dBm
Units
8 - 134
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
HMC285
/
285E
v02.0907
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
Conversion Gain vs.
Temperature @ LO = +10 dBm
0
-5
-10
-15
-20
-25
-30
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
ISOLATION (dB)
Isolation @ LO = +10 dBm
0
-10
-20
-30
IF = 400 MHz
-40
-50
-60
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
RF/IF
LO/RF
LO/RF
CONVERSION GAIN (dB)
IF = 400 MHz
-40 C
+25 C
+85 C
8
MIXERS - SMT
Conversion Gain vs. LO Drive
0
-5
-10
-15
IF = 400 MHz
-20
-25
-30
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
+5 dBm
+7 dBm
+10 dBm
+13 dBm
Return Loss @ LO = +10 dBm
0
CONVERSION GAIN (dB)
-5
RETURN LOSS (dB)
-10
-15
IF = 400 MHz
-20
LO
RF
-25
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
Conversion Gain vs. IF Frequency
0
-5
-10
-15
-20
-25
-30
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
IF Bandwidth @ LO = +10 dBm.
Conversion Gain & Return Loss
CONVERSION GAIN & RETURN LOSS (dB)
0
CONVERSION GAIN (dB)
-5
-10
-15
100 MHz
400 MHz
800 MHz
-20
IF Conv. Gain
IF Return Loss
-25
0
0.5
1
1.5
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 - 13
HMC285
/
285E
v02.0907
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
Input IP3 vs.
Temperature @ LO = +10 dBm
25
24
23
INPUT IP3 (dBm)
22
21
20
19
18
17
16
15
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
FREQUENCY (GHz)
FREQUENCY (GHz)
-40 C
+25 C
+85 C
Input IP3 vs. LO Drive
25
24
23
INPUT IP3 (dBm)
22
21
20
19
18
17
16
+7 dBm
+10 dBm
+13 dBm
8
MIXERS - SMT
15
Input IP2 vs. LO Drive
70
P1dB vs.
Temperature @ LO = +10 dBm
15
14
60
INPUT P1dB (dBm)
INPUT IP2 (dBm)
13
12
11
10
9
8
7
6
-40 C
+25 C
+85 C
50
40
+7 dBm
+10 dBm
+13 dBm
30
20
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
FREQUENCY (GHz)
5
1
1.3
1.5
1.8
2
2.2
2.5
2.7
3
FREQUENCY (GHz)
MxN Spurious Outputs
nLO
mRF
0
1
2
3
4
0
xx
10
59
>110
>110
1
-12.4
0
60
87
>110
2
1
38
61
90
>110
3
1
23
43
80
>110
4
33
43
62
88
>110
Harmonics of LO
nLO Spur at RF Port
LO Frequency (GHz)
1.5
1.7
1.9
2.1
2.3
2.5
1
42
39
39
47
36
30
2
17
16
15
16
18
21
3
47
41
37
35
32
32
4
47
44
44
45
48
50
RF = 2.6 GHz @ -10 dBm
LO = 2.2 GHz @ +10 dBm
All values in dBc relative to the IF
LO = +10 dBm
Values in dBc below input LO level measured at the RF port
8 - 136
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
HMC285
/
285E
v02.0907
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
Absolute Maximum Ratings
RF / IF Input
LO Drive
Storage Temperature
Operating Temperature
+13 dBm
+27 dBm
-65 to +150 °C
-40 to +85 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
8
MIXERS - SMT
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS].
3. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
4. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
5. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.
Outline Drawing
Package Information
Part Number
HMC285
HMC285E
Package Body Material
Low Stress Injection Molded Plastic
RoHS-compliant Low Stress Injection Molded Plastic
Lead Finish
Sn/Pb Solder
100% matte Sn
MSL Rating
MSL1
MSL1
[1]
Package Marking
[3]
H285
XXXX
285E
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
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 - 13
HMC285
/
285E
v02.0907
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
Evaluation Board Layout
8
MIXERS - SMT
List of Materials for Evaluation PCB 103240
[1]
Item
J1 - J3
U1
PCB
[2]
Description
PC Mount SMA Connector
HMC285 / HMC285E Mixer
103065 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
The circuit board used in the final application
should be generated with proper RF circuit design
techniques. Signal lines should have 50 ohm
impedance and the package ground leads should
be connected directly to the ground plane similar to
that shown above. The evaluation circuit board as
shown is available from Hittite upon request.
8 - 138
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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