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MICROWAVE CORPORATION
12 - 108
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MIXERS - SMT
12
HMC285
v00.0700
General Description
Features
Functional Diagram
No External Components Required
LO / RF Isolation: 30 dB
Input IP3: +20 dBm
Ultra Small SOT26 Package
Electrical Specifi cations,
T
A
= +25 C, As a Function of IF Frequency
Typical Applications
The HMC285 is ideal for:
PCS
W-CDMA
2.4 GHz ISM
MMDS
The HMC285 is an ultra miniature single bal-
anced mixer in an 6 lead plastic surface mount
SOT26 package. This passive MMIC mixer is con-
structed 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 con-
sistent MMIC performance will improve system
operation without the need for external compo-
nents. The SOT26 package is the smallest foot-
print available for a complete single-balanced
mixer, 0.118" x 0.118" (3.0mm x 3.0mm).
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
Parameter
LO = +10 dBm
IF = 100 MHz
LO = +10 dBm
IF = 400 MHz
Units
Min.
Typ.
Max.
Min.
Typ.
Max.
Frequency Range, RF & LO
2 - 3.5
1.7 - 2.8
GHz
Frequency Range, IF
DC - 0.9
DC - 0.9
GHz
Conversion Loss
9
11
9.5
11.5
dB
Noise Figure (SSB)
9
11
9.5
11.5
dB
LO to RF Isolation
20
30
25
35
dB
LO to IF Isolation
11
20
14
20
dB
IP3 (Input)
17
21
16
20
dBm
1 dB Compression (Input)
7
11
6
10
dBm
MICROWAVE CORPORATION
12 - 109
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MIXERS - SMT
12
v00.0700
-30
-25
-20
-15
-10
-5
0
1
1.5
2
2.5
3
3.5
4
CONVERSION GAIN (dB)
FREQUENCY (GHz)
+85 C
-40 C
+25 C
IF = 400 MHz
-60
-50
-40
-30
-20
-10
0
1
1.5
2
2.5
3
3.5
4
ISOLATION (dB)
FREQUENCY (GHz)
IF = 400 MHz
RF/IF
LO/RF
LO/IF
Conversion Gain vs.
Temperature @ LO = +10 dBm
HMC285
-30
-25
-20
-15
-10
-5
0
1
1.5
2
2.5
3
3.5
4
CONVERSION GAIN (dB)
FREQUENCY (GHz)
+10 dBm
+13 dBm
IF = 400 MHz
+7 dBm
+5 dBm
-30
-25
-20
-15
-10
-5
0
1
1.5
2
2.5
3
3.5
4
CONVERSION GAIN (dB)
FREQUENCY (GHz)
IF = 100 MHz
IF = 800 MHz
IF = 400 MHz
-25
-20
-15
-10
-5
0
1
1.5
2
2.5
3
3.5
4
RETURN LOSS (dB)
FREQUENCY (GHz)
RF
LO
IF = 400 MHz
-25
-20
-15
-10
-5
0
0
0.5
1
1.5
CONVERSION GAIN & RETURN LOSS (dB)
FREQUENCY (GHz)
IF Conv. Gain
IF Return Loss
Isolation @ LO = +10 dBm
Conversion Gain vs. LO Drive
Return Loss @ LO = +10 dBm
Conversion Gain vs. IF Frequency
IF Bandwidth @ LO = +10 dBm.
Conversion Gain & Return Loss
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
MICROWAVE CORPORATION
12 - 110
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MIXERS - SMT
12
v00.0700
HMC285
MxN Spurious Outputs
15
16
17
18
19
20
21
22
23
24
25
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
INPUT IP3 (dBm)
FREQUENCY (GHz)
+13 dBm
+10 dBm
+7 dBm
15
16
17
18
19
20
21
22
23
24
25
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
INPUT IP3 (dBm)
FREQUENCY (GHz)
+85 C
+25 C
-40 C
Input IP3 vs. LO Drive
Input IP3 vs.
Temperature @ LO = +10 dBm
Input IP2 vs. LO Drive
20
30
40
50
60
70
1
1.25
1.5
1.75
2
2.25
2.5
2.75
3
INPUT IP2 (dBm)
FREQUENCY (GHz)
+13 dBm
+7 dBm
+10 dBm
P1dB vs.
Temperature @ LO = +10 dBm
Harmonics of LO
5
6
7
8
9
10
11
12
13
14
15
1
1.3
1.5
1.8
2
2.2
2.5
2.7
3
INPUT P1dB (dBm)
FREQUENCY (GHz)
+85 C
+25 C
-40 C
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
nLO
mRF
0
1
2
3
4
0
xx
-12.4
1
1
33
1
10
0
38
23
43
2
59
60
61
43
62
3
>110
87
90
80
88
4
>110
>110
>110
>110
>110
RF = 2.6 GHz @ -10 dBm
LO = 2.2 GHz @ +10 dBm
All values in dBc relative to the IF
nLO Spur at RF Port
LO Frequency (GHz)
1
2
3
4
1.5
42
17
47
47
1.7
39
16
41
44
1.9
39
15
37
44
2.1
47
16
35
45
2.3
36
18
32
48
2.5
30
21
32
50
LO = +10 dBm
Values in dBc below input LO level measured at the RF port
MICROWAVE CORPORATION
12 - 111
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MIXERS - SMT
12
v00.0700
HMC285
Outline Drawing
Absolute Maximum Ratings
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
RF / IF Input
+13 dBm
LO Drive
+27 dBm
Storage Temperature
-65 to +150 C
Operating Temperature
-40 to +85 C
NOTES:
1. PACKAGE BODY MATERIAL: LOW STRESS INJECTION MOLDED
PLASTIC SILICA AND SILICON IMPREGNATED.
2. LEADFRAME MATERIAL: COPPER ALLOY
3. LEADFRAME PLATING: Sn/Pb SOLDER
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
6. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
7. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.
MICROWAVE CORPORATION
12 - 112
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MIXERS - SMT
12
v00.0700
HMC285
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
Evaluation Board Layout
The circuit board used in the fi nal 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 Hit-
tite upon request.
List of Materials
J1 - J3
PC Mount SMA Connector
U1
HMC285 Mixer
PCB
103065 Eval Board
* Circuit Board Material: 4350
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