Datasheet
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MAX2090
50MHz to 1000MHz Analog VGA and Power
Detector with Optional AGC Loop
AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit with analog attenuator set to minimum attenuation, V
CC
= 4.75V to 5.8V, f
RF
= 350MHz, -40NC < T
C
<
+95NC, and RF ports are connected to 50I sources, unless otherwise noted. Typical values are at T
C
= +25NC, V
CC
= 5.0V,
P
RF_IN
= -25dBm, V
PLVLSET
= 2.5V, CTRL1 = 0, CTRL2 = 1. Min/max specifications apply over supply, process, and temperature,
unless otherwise noted.) (Note 7)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Third-Order Intercept
Point (Note 5)
OIP3
V
PLVLSET
= 2.5V, P
RF_OUT
= 0dBm/tone,
f
RF2
- f
RF1
= 1MHz
31.8 36.5
dBm
V
PLVLSET
= 0.7V, P
RF_OUT
= 0dBm/tone,
f
RF2
- f
RF1
= 1MHz
31.8 36.5
Output Second-Order Intercept
Point
OIP2
P
RF_OUT
= 0dBm/tone,
f
RF2
- f
RF1
= 1MHz,
f
RF_OUT
=
f
RF2
+ f
RF1
56.7 dBm
Output Second Harmonic P
RF_OUT
= 0dBm 61.4 dBc
Output Third Harmonic P
RF_OUT
= 0dBm 72.8 dBc
Output -1dB Compression Point P
1dB
(Notes 8, 9) 14 17.2 dBm
Average Gain-Control Slope V
PLVLSET
= 0.5V to 2.0V (Note 5) 16.5 19.5 23.0 dB/V
Maximum Gain-Control Slope V
PLVLSET
= 0 to 2.5V 25 dB/V
VGA Reverse Isolation 35 dB
Attenuator Response Time
P
RF_IN
= -15dBm, V
PLVLSET
= 2.5V to 1.2V,
output settled within Q0.5dB of final value
330
ns
P
RF_IN
= -15dBm, V
PLVLSET
=1.2V to 2.5V,
output settled within Q0.5dB final value
220
Insertion Phase Change V
PLVLSET
= 2.5V to 0V 11 Degrees
RMS Detector Slope 55 mV/dB
RMS Detector Q0.25dB Accuracy
Dynamic Range
25 dB
Power-Detector Variation Due to
Temperature
T
C
= +25NC to -40NC
-0.4
dB
T
C
= +25NC to +95NC
0.1
RF_IN Return Loss
Z
S
= 50I, over full attenuation range
(Note 5)
13.5 20 dB
RF_OUT Return Loss
Z
L
= 50I over full attenuation range
(Note 5)
13.5 20 dB
POWER DETECTOR/AGC LOOP (CTRL1 = CTRL2 = 1, P
RF�IN
= -15dBm, V
PLVLSET
= 1.65V)
Maximum Output Power Variation
vs. Modulation Level
4 QAM–256 QAM, T
C
= +25NC (Note 10) Q0.5
dB
Maximum Output Power Variation
vs. Temperature
-40NC P T
C
P +95NC (Note 11) Q0.5
dB