Datasheet
MAX19995
Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
12 ______________________________________________________________________________________
Typical Operating Characteristics (continued)
(
Typical Application Circuit
, optimized for the DCS/PCS band, R1 = R4 = 806Ω, 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)
23001900 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)
410140 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)
22001600 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 UNSELECTED RETURN LOSS (dB)
2200 24001600 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)
25001900 2100 2300
9
8
10
11
6
7
1700
0Ω, 3.6nH, 6.8nH, 10nH
INPUT IP3 vs. RF FREQUENCY
(VARIOUS VALUES OF L3 AND L6)
MAX19995 toc43
RF FREQUENCY (MHz)
INPUT IP3 (dBm)
25001900 2100 2300
23
22
24
25
20
21
1700
0Ω
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)
25001900 2100 2300
70
80
90
50
60
1700
0Ω
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)
25001900 2100 2300
75
85
95
55
65
1700
0Ω
10nH
6.8nH
3.6nH
P
RF
= -5dBm