Data Sheet HMC557A
Rev. C | Page 7 of 23
TYPICAL PERFORMANCE CHARACTERISTICS
DOWNCONVERTER PERFORMANCE WITH UPPER SIDEBAND SELECTED, IF = 100 MHz
0
–4
–8
–12
–16
–20
2 3 4 5
6 7
8
9
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
13161-001
T
A
= +85°C
T
A
= +25°C
T
A
= –40°C
Figure 7. Conversion Gain vs. RF Frequency at Various Temperatures,
LO Drive = 15 dBm
0
–4
–8
–12
–16
–20
2 3 4 5
6 7 8 9
CONVERSION GAIN (dB)
RF FREQUENCY (GHz)
13161-002
LO = 9dBm
LO = 11dBm
LO = 13dBm
LO = 15dBm
LO = 17dBm
Figure 8. Conversion Gain vs. RF Frequency at Various LO Drives
0
–5
–10
–15
–20
–25
–30
–35
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
RESPONSE (dB)
IF FREQUENCY (GHz)
13161-003
CONVERSION GAIN
IF RETURN LOSS
Figure 9. Conversion Gain and IF Return Loss Response vs. IF Frequency,
LO Frequency = 4.5 GHz
0
–10
–20
–30
–40
–50
–60
2
3 4 5 6 7
8 9
ISOLATION (dB)
RF/LO FREQUENCY (GHz)
RF TO IF
LO TO RF
LO TO IF
13161-004
Figure 10. Isolation vs. RF/LO Frequency
0
–5
–10
–15
–20
–25
–30
–35
2 3 4 5 6 7
8 9
LO RETURN LOSS (dB)
LO FREQUENCY (GHz)
13161-005
T
A
= +85°C
T
A
= +25°C
T
A
= –40°C
Figure 11. LO Port Return Loss vs. LO Frequency, LO Drive = 15 dBm
0
–5
–10
–15
–20
–25
–30
–35
2 3 4 5 6 7 8 9
RF RETURN LOSS (dB)
RF FREQUENCY (GHz)
13161-006
T
A
= +85°C
T
A
= +25°C
T
A
= –40°C
Figure 12. RF Port Return Loss vs. RF Frequency, LO Frequency = 4.6 GHz,
LO Drive = 15 dBm
