Datasheet

17
50MHz to 500MHz Analog VGA, 1735MHz to 1935MHz
Upconverting Mixer with Image Filtering, Threshold
Alarm Circuit, and Error Amplifier for Level Control
MAX2091
Typical Operating Characteristics (continued)
(Typical Application Circuit configured for Full Cascade with interstage attenuator network (IF_IN to RF_OUT), analog attenuator
set to maximum gain (V
PLVLSET
= 2.5V), V
CC
= 5.5V, T
C
= +25NC, f
IF_IN
= 350MHz, P
IF_IN
= -25dBm, f
LO
= 1485MHz, P
LO
= -7dBm, f
RF
= f
IF_IN
+ f
LO
, R
SOURCE
= R
LOAD
= 50I, CTRL1 = 1 CTRL2 = 0, ALM_THRES = ALM = open, unless otherwise noted.)
LO PORT MATCH vs. LO FREQUENCY
MAX2091 toc98
LO FREQUENCY (MHz)
LO PORT MATCH (dB)
1450 1650
-20
-10
0
-30
1250 1850
T
C
= -40°C
T
C
= +95°C
T
C
= +25°C
LO PORT MATCH vs. LO FREQUENCY
MAX2091 toc99
LO FREQUENCY (MHz)
LO PORT MATCH (dB)
1450 1650
-20
-10
0
-30
1250 1850
P
LO
= -10dBm, -7dBm, -4dBm
LO PORT MATCH vs. LO FREQUENCY
MAX2091 toc100
LO FREQUENCY (MHz)
LO PORT MATCH (dB)
1450 1650
-20
-10
0
-30
1250 1850
V
CC
= 4.75V, 5.00V, 5.25V, 5.50V
NOISE FIGURE vs. IF FREQUENCY
MAX2091 toc101
IF FREQUENCY (MHz)
NOISE FIGURE (dB)
300 400
5
4
6
7
3
200 500
T
C
= +95°C
T
C
= +25°C
T
C
= -40°C
OUTPUT IP3 vs. RF FREQUENCY
MAX2091 toc104
RF FREQUENCY (MHz)
OUTPUT IP3 (dBm)
1785 1885
23
25
27
21
1685 1985
T
C
= -40°C
T
C
= +95°C
T
C
= +25°C
P
IF
= -25dBm/TONE
NOISE FIGURE vs. IF FREQUENCY
MAX2091 toc102
IF FREQUENCY (MHz)
NOISE FIGURE (dB)
300 400
5
4
6
7
3
200 500
P
LO
= -10dBm, -7dBm, -4dBm
OUTPUT IP3 vs. RF FREQUENCY
MAX2091 toc105
RF FREQUENCY (MHz)
OUTPUT IP3 (dBm)
1785 1885
23
25
27
21
1685 1985
P
LO
= -10dBm, -7dBm, -4dBm
P
IF
= -25dBm/TONE
NOISE FIGURE vs. IF FREQUENCY
MAX2091 toc103
IF FREQUENCY (MHz)
NOISE FIGURE (dB)
300 400
5
4
6
7
3
200 500
V
CC
= 4.75V, 5.00V, 5.50V, 5.80V
OUTPUT IP3 vs. RF FREQUENCY
MAX2091 toc106
RF FREQUENCY (MHz)
OUTPUT IP3 (dBm)
1785 1885
23
25
27
21
1685 1985
V
CC
= 4.75V, 5.00V, 5.25V, 5.50V
P
IF
= -25dBm/TONE