Hittite HMC258 Datasheet
y2k
new!
MICROWAVE CORPORATION
FEBRUARY 2001
HMC258
GaAs MMIC SUB-HARMONICALL Y PUMPED MIXER 14 - 21 GHz
4
MIXERS
Features
INTEGRATED LO AMPLIFIER: 0dBm DRIVE
SUB-HARMONICALLY PUMPED (x2) LO
HIGH 2LO/RF ISOLATION: > 35dB
SMALL SIZE: 0.8mm x 1.1mm
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 0.9mm
The 2LO to RF isolation is excellent eliminating
the need for additional filtering. The LO amplifier
is a single bias (+5V) two stage design with only
0dBm drive requirement. A less stringent oscillator design is made possible by the low LO
drive and sub-harmonic nature of the chip. This
mixer chip is designed to be used in microwave
point to point radios, VSAT and other SATCOM
applications. 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).
2
.
Guaranteed Performance, LO Drive= 0 dBm, - 55 to + 85 deg C
DIE
Parameter
Min. Typ. Max. Min. Typ. Max.
Frequency Range, RF 14 - 21 17 - 20 GHz
Frequency Range LO 7 - 10.5 8.5 - 10 GHz
Frequency Range, IF DC - 3 DC - 3 GHz
Conversion Loss 10 13.5 9.5 12 dB
Noise Fi gure (SSB) 10 13.5 9.5 12 dB
2LO to RF Isolation 30 40 34 40 dB
2LO to IF Isolation 30 40 ~ 50 38 40 ~ 50 dB
IP3 (Input) 0 7 0 7 dBm
1 dB Compression (Input) -5 0 -4 1 dBm
Local Oscillator Drive Level -4 0 +6 -4 0 +6 dBm
Supply Voltage (Vdd) 4.5 5.0 5.5 4.5 5.0 5.5 Vdc
Supply Current (Idd) ( Vdd = +5.0 Vdc) 50 65 50 65 mA
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Web Site: www.hittite.com
4 - 100
IF = 1 GHz
Vdd =+5.0V
IF = 1 GHz
Vdd = +5.0V
Units
MICROWAVE CORPORATION
HMC258 SUB-HARMONICALLY PUMPED MIXER 14 - 21 GHz
new!
HMC258
FEBRUARY 2001
y2k
Conversion Gain vs. Temperature
@ LO = 0 dBm
0
-55 C
-5
-10
-15
CONVERSION GAIN (dB)
-20
-25
13 14 15 16 17 18 19 20 21 22 23
RF FREQUENCY (GHz)
+85 C
+25 C
Conversion Gain vs. LO Drive
0
-5
-10
-15
CONVERSION GAIN (dB)
-20
-25
13 14 15 16 17 18 19 20 21 22 23
+2 dBm
-4 dBm
RF FREQUENCY (GHz)
0dBm
+4 dBm
-2 dBm
Isolation @ LO = 0 dBm
0
-10
LO/IF
-20
-30
-40
ISOLATION (dB)
-50
-60
13 14 15 16 17 18 19 20 21 22 23
RF/IF
2LO/IF
RF FREQUENCY (GHz)
LO/RF
2LO/RF
Return Loss @ LO = 0 dBm
0
-5
-10
-15
-20
-25
RETURN LOSS (dB)
-30
-35
-40
LO
IF
0 2 4 6 8 10121416182022
FREQUENCY (GHz)
4
MIXERS
RF
DIE
IF Bandwidth @ LO = 0 dBm
Upconverter Performance
Conversion Gain vs. LO Drive
0
-5
-10
-15
-20
IF CONVERSION GAIN (dB)
-25
0123456
IF FREQUENCY (GHz)
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Web Site: www.hittite.com
0
-5
-10
-15
CONVERSION GAIN (dB)
-20
-25
13 14 15 16 17 18 19 20 21 22 23
+2 dBm
-4 dBm
RF FREQUENCY (GHz)
0dBm
-2 dBm
+4 dBm
4 - 101
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