HMC285 / 285E
v02.0907
GaAs MMIC SMT SINGLE
BALANCED MIXER, 1.7 - 3.5 GHz
Typical Applications
Features
The HMC285 / HMC285E is ideal for:
No External Components Required
LO / RF Isolation: 30 dB
Input IP3: +21 dBm
• PCS
• W-CDMA
• 2.4 GHz ISM
• MMDS
Ultra Small SOT26 Package
8
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 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 Specifications, TA = +25° C, As a Function of IF Frequency
LO = +10 dBm
IF = 100 MHz
LO = +10 dBm
IF = 400 MHz
Parameter
Units
Min.
Typ.
Max.
Min.
Typ.
1.7 - 2.8
DC - 0.9
9.5
Max.
Frequency Range, RF & LO
Frequency Range, IF
Conversion Loss
2 - 3.5
GHz
GHz
dB
DC - 0.9
9
11
11
11.5
11.5
Noise Figure (SSB)
LO to RF Isolation
LO to IF Isolation
9
9.5
dB
20
11
17
7
30
20
21
11
25
14
16
6
35
dB
20
dB
IP3 (Input)
20
dBm
dBm
1 dB Compression (Input)
10
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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