HMC258 Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – GaAs MMIC SUB-HARMONICALLY PUMPED MIXER, 14 - 21 GHz

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MICROWAVE CORPORATION
HMC258
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 14 - 21 GHz
Typical Applications
The HMC258 is ideal for:
• Microwave Pt to Pt Radios
• VSAT
• SATCOM
Features
Integrated LO Amplifier: 0dBm Drive
Sub-Harmonically Pumped (x2) LO
High 2LO/RF Isolation: 40 dB
Small Size: 0.8mm x 1.1mm
Functional Diagram
5
General Description
The HMC258 chip is a compact sub-harmonically
pumped (x2) single ended MMIC mixer with an
integrated LO amplifier which can be used as an
upconverter or downconverter. The chip utilizes a
GaAs MESFET technology that results in a small
overall chip area of 0.9mm². The 2LO to RF isola-
tion is excellent eliminating the need for additional
filtering. The LO amplifier is a single bias (+5V)
two stage design with only 0dBm drive require-
ment. A less stringent oscillator design is made
possible by the low LO drive and sub-harmonic
nature of the chip. All data is with the chip in a 50
ohm test fixture connected via 0.025mm (1 mil)
diameter wire bonds of minimal length <0.31 mm
(<12 mils).
Electrical Specifications, T_A = +25° C, LO Drive = 0 dBm
Parameter
IF = 1 GHz
Vdd = +5.0V
Min.
Typ.
Max.
Min.
Frequency Range, RF
14 - 21
Frequency Range, LO
7 - 10.5
Frequency Range, IF
DC - 3
Conversion Loss
10
13.5
Noise Figure (SSB)
10
13.5
2LO to RF Isolation
30
40
34
2LO to IF Isolation
30
40 ~ 50
38
IP3 (Input)
0
7
0
1 dB Compression (Input)
-5
0
-4
Supply Current (Idd)
50
IF = 1 GHz
Vdd = +5.0V
Typ.
17 - 20
8.5 - 10
DC - 3
9.5
9.5
40
40 ~ 50
7
1
50
Max.
12
12
Units
GHz
GHz
GHz
dB
dB
dB
dB
dBm
dBm
mA
5 - 38
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order Online at www.hittite.com