MAX2091
50MHz to 500MHz Analog VGA, 1735MHz to 1935MHz
Upconverting Mixer with Image Filtering, Threshold
Alarm Circuit, and Error Amplifier for Level Control
AC ELECTRICAL CHARACTERISTICS (continued)
( Typical Application Circuit with analog attenuator set to maximum gain, V CC = 4.75V to 5.8V, f RF = 1835MHz, f LO = 1485MHz,
f IF = 350MHz, f RF = f LO + f IF , P LO = -10dBm to -4dBm, T C = -40°C to +95°C, and IF_IN, LO+, and RF_OUT ports are connected
to 50ω sources and loads, unless otherwise noted. Typical values are at T C = +25°C, V CC = 5.5V, P LO = -7dBm, P IF = -25dBm,
V PLVLSET = 2.5V, CTRL1 = logic 1, CTRL2 = logic 0. Min/max specifications apply over supply, process, and temperature, unless
otherwise noted. (Notes 5, 7, 8)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
IF VGA (ATTENUATOR + AMPLIFIER)
Small-Signal Gain
Noise Figure
23.5
26
4.0
27.5
dB
dB
Output Third-Order
Intercept Point
Output Second-Order
Intercept Point
OIP3
OIP2
Up to 30dB attenuation,
P IF_OUT = 0dBm/tone, f RF2 - f RF1 = 1MHz
P IF_OUT = 0dBm/tone,
f RF2 - f RF1 = 1MHz
38.8
57.4
dBm
dBm
Output Second Harmonic
Output Third Harmonic
Output -1dB Compression Point
P 1dB
P IF_OUT = 0dBm
P IF_OUT = 0dBm
64.5
80.0
17.6
dBc
dBc
dBm
Average Gain-Control Slope
Maximum Gain-Control Slope
V PLVLSET = 0.5V to 2.0V
V PLVLSET = 0V to 2.5V
16.5
19.5
25
23.0
dB/V
dB/V
VGA Reverse Isolation
P IF_IN = -15dBm, V PLVLSET = 2.5V to
1.2V, output settled to within Q 0.5dB of
35
330
dB
Attenuator Response Time
final value
P IF_IN = -15dBm, V PLVLSET = 1.2V to
2.5V, output settled to within Q 0.5dB of
220
ns
final value
Insertion Phase Change
V PLVLSET = 2.5V to 0V
11.4
Degrees
MIXER WITH IMAGE REJECT FILTER
Conversion Gain
SSB Noise Figure
Output Third-Order Intercept
Point
Output -1dB Compression Point
Image Rejection
G
NF
OIP3
P 1dB
f IF = 350MHz Q 50MHz
-2.2
15
-0.5
17.1
24.7
12.2
20
1.5
dB
dB
dBm
dBm
dB
LO Leakage at RF_OUT
2LO Leakage at RF_OUT
-41
-35
dBm
dBm
Second Harmonic
Third Harmonic
3LO + IF Spur
MIX_IN Return Loss
LO+ Port Return Loss
RF_OUT Return Loss
HD2
HD3
P RF_OUT = -2dBm
P RF_OUT = -2dBm
P RF_OUT = -2dBm
65
77.5
33
22
24
20
dBc
dBc
dBc
dB
dB
dB
4
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