Datasheet

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MAX2090
50MHz to 1000MHz Analog VGA and Power
Detector with Optional AGC Loop
Typical Operating Characteristics (continued)
(Typical Application Circuit with analog attenuator set to minimum attenuation (V
PLVLSET
= 2.5V), V
CC
= 5.5V, T
C
= +25NC, f
RF_IN
=
350MHz, P
RF_IN
= -25dBm, R
SOURCE
= R
LOAD
= 50I, CTRL1 = 0, CTRL2 = 1, ALM_THRES = ALM = open, unless otherwise noted.)
OIP2 vs. RF FREQUENCY
MAX2090 toc25
OIP2 (dBm)
50
60
70
40
RF FREQUENCY (MHz)
50 1050850650450250
P
OUT
= 0dBm/TONE
V
CC
= 4.75V
V
CC
= 5.00V
V
CC
= 5.50V
V
CC
= 5.80V
OIP2 vs. ATTENUATOR SETTING
MAX2090 toc26
OIP2 (dBm)
50
60
70
40
V
PLVLSET
(V)
2.0251.5501.0750.600 2.500
P
OUT
= 0dBm/TONEf
RF
= 350MHz
T
C
= +95°C
T
C
= +25°CT
C
= -40°C
DETECTOR ERROR FROM ONE IDEAL LINE
(CW SIGNAL)
MAX2090 toc27
DETECTOR INPUT POWER (dBm)
ERROR (dB)
-5-10-15-20
-1.0
-0.5
0
0.5
1.0
1.5
-1.5
-25 0
f
RF
= 350MHz
T
C
= +95°C
T
C
= +25°C
T
C
= -40°C
DETECTOR ERROR FROM ONE IDEAL LINE
OVER TEMPERATURE MODULATION TYPE
AND DATA RATE
MAX2090 toc28
DETECTOR INPUT POWER (dBm)
ERROR (dB)
-5-10-15-20
-1.0
-0.5
0
0.5
1.0
1.5
-1.5
-25 0
f
RF
= 350MHz
T
C
= -40°C, +25°C, +95°C
CW, 4QAM, 64QAM, 256QAM
270.8ksps, 2Msps,12.5Msps
RF OUTPUT POWER
vs. RF INPUT POWER OVER PLVLSET
(CLOSED LOOP)
MAX2090 toc29
RF INPUT POWER (dBm)
RF OUTPUT POWER (dBm)
-5-15-25
-40
-30
-20
-10
0
10
20
-50
-35 5
f
RF
= 350MHz
2.5V
2.0V
1.5V
0.5V
0V
1.0V
V
DET_OUT
vs. RF INPUT POWER
OVER PLVLSET (CLOSED LOOP)
MAX2090 toc30
V
DET_OUT
(V)
0.6
1.2
1.8
2.4
3.0
0
-35
RF INPUT POWER (dBm)
-5-15-25 5
2.5V
2.0V
1.5V
0.5V
1.0V
0V
f
RF
= 350MHz