Document
v08.0514
HMC571LC5
GaAs MMIC I/Q DOWNCONVERTER 21 - 25 GHz
MIXERS - I/Q MIXERS, IRMS & RECEIVERS - SMT
Typical Applications
The HMC571LC5 is ideal for: • Point-to-Point and Point-to-Multi-Point Radio • Military Radar, EW & ELINT • Satellite Communications
Functional Diagram
Features
Conversion Gain: 9 dB
Image Rejection: 18 dB
2 LO to RF Isolation: 35 dB
Noise Figure: 3 dB
Input IP3: +2 dBm
32 Lead 5x5mm SMT Package: 25mm²
General Description
The HMC571LC5 is a compact GaAs MMIC I/Q downconverter in a leadless RoHS compliant SMT package. This device provides a small signal conversion gain of 9 dB with a noise figure of 3.0 dB and 18 dB of image rejection across the frequency band. The HMC571LC5 utilizes an LNA followed by an image reject mixer which is driven by an active x2 multiplier. The image reject mixer eliminates the need for a filter following the LNA, and removes thermal noise at the image frequency. I and Q mixer outputs are provided and an external 90° hybrid is needed to select the required sideband. The HMC571LC5 is a much smaller alternative to hybrid style image reject mixer downconverter assemblies, and it eliminates the need for wire bonding by allowing the use of surface mount manufacturing techniques.
Electrical Specifications, TA = +25 °C, IF = 100 MHz, LO = +4 dBm, Vdd = 3.5 Vdc*
Parameter
Frequency Range, RF Frequency Range, LO Frequency Range, IF Conversion Gain (As IRM) Noise Figure Image Rejection 1 dB Compression (Input) 2 LO to RF Isolation 2 LO to IF Isolation IP3 (Input) Amplitude Balance Phase Balance Total Supply Current *Data taken as IRM with external IF Hybrid
Min.
9
18 -7 50 40 +4
Typ.
21.2 - 23.7 9 - 14
DC - 3.5 11 3 22 -5 60 45 +6 0.8 5 125
Max. 165
Min. Typ. Max.
21 - 25 9 - 14 DC - 3.5 8 11
3 15 23 -9 -6 55 40 38 45 -1 +5
0.3 4 125 165
Units
GHz GHz GHz dB dB dB dBm dB dB dBm dB Deg mA
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v08.0514
HMC571LC5
GaAs MMIC I/Q DOWNCONVERTER 21 - 25 GHz
Data Taken As IRM With External IF Hybrid
Conversion Gain vs. Temperature
20
15
CONVERSION GAIN (dB)
10
5
0
+25C +85C
-40C
-5
-10 18 19 20 21 22 23 24 25 26
RF FREQUENCY (GHz)
IMAGE REJECTION (dB)
Image Rejection vs. Temperature
35
30
25
20
15 +25C
10 +85C -40C
5 18 19 20 21 22 23 24 25 26 RF FREQUENCY (GHz)
Conversion Gain vs. LO Drive
20
15
CONVERSION GAIN (dB)
10
5
0dBm
0
+2dBm +4dBm
+6dBm
+8dBm
-5 18 19 20 21 22 23 24 25 26
RF FREQUENCY (GHz)
P1dB (dBm)
Input P1dB vs. Temperature
0 -2 -4 -6 -8 -10 -12 +25C
+85C -14 -40C -16 -18 -20
18 19 20 21 22 23 24 25 26 RF FREQUENCY (GHz)
Return Loss
0
-5
RETURN LOSS (dB)
-10
-15
-20
RF LO
-25 8
10 12 14 16 18 20 22 24 26 28 FREQUENCY (GHz)
Input IP3 vs. LO Drive
15
10
5
IP3 (dBm)
0
-5
LO = 0 dBm
LO = +2 dBm
-10
LO = +4 dBm LO = +6 dBm
LO = +8 dBm
-15 18 19 20 21 22 23 24 25 26
RF FREQUENCY (GHz)
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MIXERS - I/Q MIXERS, IRMS & RECEIVERS - SMT
2
MIXERS - I/Q MIXERS, IRMS & RECEIVERS - SMT
v08.0514
HMC571LC5
GaAs MMIC I/Q DOWNCONVERTER 21 - 25 GHz
Quadrature Channel Data Taken Without IF Hybrid
Isolations
IF Bandwidth*
ISOLATION (dB)
10
0 RF/IF2
-10 -20 RF/IF1
-30 2LO/IF1
-40
-50 2LO/IF2 -60 2LO/RF
-70
-80 18 19 20 21 22 23 24 25 26 RF FREQUENCY (GHz)
RESPONSE (dB)
20
15
10
5
0
CONVERSION GAIN RETURN LOSS
-5
-10
-15
-20 0.5 1 1.5 2 2.5
IF FREQUENCY (GHz)
3
3.5
Amplitude Balance vs. LO Drive
2.5
AM.