Typical operating characteristics (continued) – Rainbow Electronics MAX19995 User Manual
Page 12
MAX19995
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
12
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Typical Operating Characteristics (continued)
(
Typical Application Circuit, optimized for the DCS/PCS band, R1 = R4 = 806
Ω, R2 = R5 = 2.32kΩ, V
CC
= +5.0V, P
LO
= 0dBm,
P
RF
= -5dBm, LO is low-side injected for a 190MHz IF, T
C
= +25°C, unless otherwise noted.)
RF PORT RETURN LOSS
vs. RF FREQUENCY
MAX19995 toc37
RF FREQUENCY (MHz)
RF PORT RETURN LOSS (dB)
2300
1900
2100
20
25
10
15
5
0
30
1700
2500
P
LO
= -3dBm, 0dBm, +3dBm
f
IF
= 190MHz
IF PORT RETURN LOSS
vs. IF FREQUENCY
MAX19995 toc38
IF FREQUENCY (MHz)
IF PORT RETURN LOSS (dB)
410
140
230
320
15
10
5
0
20
50
500
f
LO
= 1610MHz
V
CC
= 4.75V, 5.0V, 5.25V
LO SELECTED RETURN LOSS
vs. LO FREQUENCY
MAX19995 toc39
LO FREQUENCY (MHz)
LO SELECTED RETURN LOSS (dB)
2200
1600
1800
2000
15
10
5
0
30
25
20
1400
2400
P
LO
= -3dBm
P
LO
= 0dBm
P
LO
= +3dBm
LO UNSELECTED RETURN LOSS
vs. LO FREQUENCY
MAX19995 toc40
LO FREQUENCY (MHz)
LO UN SELECTED RETURN LOSS (dB)
2200
2400
1600
1800
2000
15
10
5
0
30
25
20
1400
P
LO
= -3dBm, 0dBm, +3dBm
SUPPLY CURRENT
vs. TEMPERATURE (T
C
)
MAX19995 toc41
TEMPERATURE (
°
C)
SUPPLY CURRENT (mA)
65
85
-15
5
25
45
300
320
340
260
280
-35
V
CC
= 5.25V
V
CC
= 4.75V
V
CC
= 5.0V
CONVERSION GAIN vs. RF FREQUENCY
(VARIOUS VALUES OF L3 AND L6)
MAX19995 toc42
RF FREQUENCY (MHz)
CONVERSION GAIN (dB)
2500
1900
2100
2300
9
8
10
11
6
7
1700
0
Ω
, 3.6nH, 6.8nH, 10nH
INPUT IP3 vs. RF FREQUENCY
(VARIOUS VALUES OF L3 AND L6)
MAX19995 toc43
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
2500
1900
2100
2300
23
22
24
25
20
21
1700
0
Ω
6.8nH
10nH
3.6nH
P
RF
= -5dBm/TONE
2RF-2LO RESPONSE vs. RF FREQUENCY
(VARIOUS VALUES OF L3 AND L6)
MAX19995 toc44
RF FREQUENCY (MHz)
2RF-2LO RESPONSE (dBc)
2500
1900
2100
2300
70
80
90
50
60
1700
0
Ω
6.8nH, 10nH
3.6nH
P
RF
= -5dBm
3RF-3LO RESPONSE vs. RF FREQUENCY
(VARIOUS VALUES OF L3 AND L6)
MAX19995 toc45
RF FREQUENCY (MHz)
3RF-3LO RESPONSE (dBc)
2500
1900
2100
2300
75
85
95
55
65
1700
0
Ω
10nH
6.8nH
3.6nH
P
RF
= -5dBm