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OBSOLETE PRODUCT
HMC285 / 285E
v02.0907
MIXERS - SINGLE & DOUBLE-BALANCED - CHIP
GaAs MMIC SMT
SINGLE-BALANCED MIXER, 1.7 - 3.5 GHz
Typical Applications
Features
The HMC285 / HMC285E is ideal for:
No External Components Required
• PCS
LO / RF Isolation: 30 dB
• W-CDMA
Input IP3: +21 dBm
• 2.4 GHz ISM
Ultra Small SOT26 Package
• MMDS
General Description
Functional Diagram
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
external components. The SOT26 package is the
smallest footprint available for a complete singlebalanced mixer, 0.118” x 0.118” (3 x 3 mm).
Electrical Specifications, TA = +25° C, As a Function of IF Frequency
LO = +10 dBm
IF = 100 MHz
Parameter
Min.
Frequency Range, RF & LO
Frequency Range, IF
1
Typ.
LO = +10 dBm
IF = 400 MHz
Max.
Min.
Typ.
Units
Max.
2 - 3.5
1.7 - 2.8
GHz
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
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
OBSOLETE PRODUCT
HMC285 / 285E
v02.0907
GaAs MMIC SMT
SINGLE-BALANCED MIXER, 1.7 - 3.5 GHz
0
0
-5
-10
-10
-15
IF = 400 MHz
-40 C
+25 C
+85 C
-20
-25
-20
-30
IF = 400 MHz
-40
RF/IF
LO/RF
LO/RF
-50
-30
-60
1
1.5
2
2.5
3
3.5
4
1
1.5
FREQUENCY (GHz)
3
3.5
4
3.5
4
Return Loss @ LO = +10 dBm
0
0
-5
-5
RETURN LOSS (dB)
CONVERSION GAIN (dB)
2.5
FREQUENCY (GHz)
Conversion Gain vs. LO Drive
-10
-15
IF = 400 MHz
-20
+5 dBm
+7 dBm
+10 dBm
+13 dBm
-25
-10
-15
IF = 400 MHz
LO
RF
-20
-25
-30
1
1.5
2
2.5
3
3.5
1
4
-5
-10
-15
100 MHz
400 MHz
800 MHz
-30
1
1.5
2
2.5
3
FREQUENCY (GHz)
3.5
4
CONVERSION GAIN & RETURN LOSS (dB)
0
-25
2
2.5
3
IF Bandwidth @ LO = +10 dBm.
Conversion Gain & Return Loss
Conversion Gain vs. IF Frequency
-20
1.5
FREQUENCY (GHz)
FREQUENCY (GHz)
CONVERSION GAIN (dB)
2
0
MIXERS - SINGLE & DOUBLE-BALANCED - CHIP
Isolation @ LO = +10 dBm
ISOLATION (dB)
CONVERSION GAIN (dB)
Conversion Gain vs.
Temperature @ LO = +10 dBm
-5
-10
-15
IF Conv. Gain
IF Return Loss
-20
-25
0
0.5
1
1.5
FREQUENCY (GHz)
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
2
OBSOLETE PRODUCT
HMC285 / 285E
v02.0907
GaAs MMIC SMT
SINGLE-BALANCED MIXER, 1.7 - 3.5 GHz
Input IP3 vs.
Temperature @ LO = +10 dBm
3
25
23
23
INPUT IP3 (dBm)
INPUT IP3 (dBm)
25
21
19
+7 dBm
+10 dBm
+13 dBm
17
21
19
17
15
-40 C
+25 C
+85 C
15
1
1.5
2
2.5
3
1
1.5
FREQUENCY (GHz)
2
2.5
3
FREQUENCY (GHz)
P1dB vs.
Temperature @ LO = +10 dBm
Input IP2 vs. LO Drive
70
15
60
13
INPUT P1dB (dBm)
INPUT IP2 (dBm)
MIXERS - SINGLE & DOUBLE-BALANCED - CHIP
Input IP3 vs. LO Drive
50
40
+7 dBm
+10 dBm
+13 dBm
30
11
9
7
-40 C
+25 C
+85 C
5
20
1
1.25
1.5
1.75
2
2.25
FREQUENCY (GHz)
2.5
2.75
3
1
1.5
2
2.5
3
FREQUENCY (GHz)
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
OBSOLETE PRODUCT
HMC285 / 285E
v02.0907
GaAs MMIC SMT
SINGLE-BALANCED MIXER, 1.7 - 3.5 GHz
MxN Spurious Outputs
Harmonics of LO
mRF
0
1
2
3
4
LO Frequency (GHz)
1
2
3
4
0
xx
-12.4
1
1
33
1.5
42
17
47
47
1
10
0
38
23
43
1.7
39
16
41
44
2
59
60
61
43
62
1.9
39
15
37
44
3
>110
87
90
80
88
2.1
47
16
35
45
4
>110
>110
>110
>110
>110
2.3
36
18
32
48
2.5
30
21
32
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
Absolute Maximum Ratings
RF / IF Input
+13 dBm
LO Drive
+27 dBm
Storage Temperature
-65 to +150 °C
Operating Temperature
-40 to +85 °C
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
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 - SINGLE & DOUBLE-BALANCED - CHIP
nLO Spur at RF Port
nLO
4
OBSOLETE PRODUCT
HMC285 / 285E
v02.0907
GaAs MMIC SMT
SINGLE-BALANCED MIXER, 1.7 - 3.5 GHz
MIXERS - SINGLE & DOUBLE-BALANCED - CHIP
Outline Drawing
5
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.
Package Information
Part Number
Package Body Material
Lead Finish
MSL Rating
HMC285
Low Stress Injection Molded Plastic
Sn/Pb Solder
MSL1
[1]
HMC285E
RoHS-compliant Low Stress Injection Molded Plastic
100% matte Sn
MSL1
[2]
Package Marking [3]
H285
XXXX
285E
XXXX
[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: 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
OBSOLETE PRODUCT
HMC285 / 285E
v02.0907
GaAs MMIC SMT
SINGLE-BALANCED MIXER, 1.7 - 3.5 GHz
List of Materials for Evaluation PCB 103240 [1]
Item
Description
J1 - J3
PC Mount SMA Connector
U1
HMC285 / HMC285E Mixer
PCB [2]
103065 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
The circuit board used in the 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.
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 - SINGLE & DOUBLE-BALANCED - CHIP
Evaluation Board Layout
6
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