Datasheet

6
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 AGC amp only (IF_IN to IF_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, R
SOURCE
= R
LOAD
= 50I, CTRL1 = 1, CTRL2 = 0, ALM_THRES = ALM =
open, unless otherwise noted.)
GAIN vs. V
PLVSET
SETTING
MAX2091 toc04
V
PLVSET
(V)
GAIN (dB)
-10
0
10
20
30
-20
50MHz
0 2.52.01.51.00.5
200MHz, 350MHz, 500MHz
GAIN vs. V
PLVSET
SETTING
MAX2091 toc05
V
PLVSET
(V)
GAIN (dB)
-10
0
10
20
30
-20
0 2.52.01.51.00.5
T
C
= -40°C, +25°C, +95°C
f
IF
= 350MHz
INPUT MATCH vs. V
PLVSET
SETTING
MAX2091 toc06
V
PLVSET
(V)
S11 (dB)
-10
0 2.52.01.51.00.5
50MHz
500MHz
200MHz
350MHz
-25
-20
-15
-30
-40
-30
-20
-10
OUTPUT MATCH vs. V
PLVSET
SETTING
MAX2091 toc07
V
PLVSET
(V)
S22 (dB)
0
-50
0 2.52.01.51.00.5
50MHz
200MHz
500MHz350MHz
REVERSE ISOLATION OVER V
PLVSET
SETTING vs. IF FREQUENCY
MAX2091 toc08
REVERSE ISOLATION (dB)
30
40
50
60
70
80
20
V
PLVSET
= 0V
V
PLVSET
= 2.5V
IF FREQUENCY (MHz)
50 500410320230140
S21 PHASE CHANGE
vs. V
PLVSET
SETTING
MAX2091 toc09
S21 PHASE CHANGE (DEG)
-60
-30
0
30
60
90
-90
V
PLVSET
(V)
0 2.52.01.51.00.5
200MHz
350MHz
POSITIVE PHASE = ELECTRICALLY SHORTER
REFERENCED TO
HIGH GAIN STATE
500MHz
50MHz
NOISE FIGURE vs. IF FREQUENCY
MAX2091 toc10
NOISE FIGURE (dB)
6
2
T
C
= +95°C
IF FREQUENCY (MHz)
200 500
3
4
5
400300
T
C
= +25°C
T
C
= -40°C
NOISE FIGURE vs. IF FREQUENCY
MAX2091 toc11
NOISE FIGURE (dB)
6
2
IF FREQUENCY (MHz)
200 500
3
4
5
400300
V
CC
= 4.75V, 5.00V, 5.50V, 5.80V
17
18
OUTPUT P
1dB
vs. IF FREQUENCY
MAX2091 toc12
OUTPUT P
1dB
(dBm)
19
16
IF FREQUENCY (MHz)
200 500400
300
T
C
= +25°C
T
C
= -40°C
T
C
= +95°C