HMC258_09 Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – GaAs MMIC SUB-HARMONICALLY PUMPED MIXER, 14 - 21 GHz

v03.1007
Typical Applications
The HMC258 is ideal for:
• Microwave Point-to-Point Radios
• VSAT
3
• SATCOM
Functional Diagram
HMC258
GaAs MMIC SUB-HARMONICALLY
PUMPED MIXER, 14 - 21 GHz
Features
Integrated LO Amplifier: 0 dBm Drive
Sub-Harmonically Pumped (x2) LO
High 2LO/RF Isolation: 40 dB
Die Size: 0.85 x 1.15 x 0.1 mm
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 isolation
is excellent eliminating the need for additional fil-
tering. The LO amplifier is a single bias (+5V) two
stage design with only 0 dBm drive requirement. 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 0.025 mm (1 mil) diameter wire bonds of minimal
length <0.31 mm (<12 mils).
Electrical Specifications, T_A = +25° C, LO Drive = 0 dBm
Parameter
Frequency Range, RF
Frequency Range, LO
Frequency Range, IF
Conversion Loss
Noise Figure (SSB)
2LO to RF Isolation
2LO to IF Isolation
IP3 (Input)
1 dB Compression (Input)
Supply Current (Idd)
IF = 1 GHz
Vdd = +5.0V
Min.
Typ.
Max.
14 - 21
7 - 10.5
DC - 3
10
13.5
10
13.5
30
40
30
40 ~ 50
0
7
-5
0
50
67
IF = 1 GHz
Vdd = +5.0V
Units
Min.
Typ.
Max.
17 - 20
GHz
8.5 - 10
GHz
DC - 3
GHz
9.5
12
dB
9.5
12
dB
34
40
dB
38
40 ~ 50
dB
0
7
dBm
-4
1
dBm
50
67
mA
3-8
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com