Datasheet

MAX2027
IF Digitally Controlled Variable-Gain Amplifier
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(Typical application circuit without matching, V
CC
= +4.75V to +5.25V, GND = 0V, max gain (B0 = B1 = B2 = B3 = B4 = 0), R
1
=
825Ω, P
OUT
= 5dBm, f
IN
= 50MHz, 50Ω RF system impedance. Typical values are at V
CC
= +5V and T
A
= +25°C, unless otherwise
noted.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Frequency Range f
R
50
400
MHz
Gain G No attenuation
15.5
dB
Noise Figure NF Max gain 4.7 dB
Minimum Reverse Isolation Max gain 22 dB
Output 1dB Compression Point P
1dB
Max gain
20.6
dBm
2nd-Order Output Intercept Point
OIP2
f
1
+ f
2
, f
1
= 50MHz, f
2
= 51MHz, 5dBm/tone
42
dBm
3rd-Order Output Intercept Point
OIP3 All gain conditions, 5dBm/tone
34.7
dBm
2nd Harmonic 2f
IN
-44 dBc
3rd Harmonic 3f
IN
-68 dBc
RF Gain-Control Range 23 dB
Gain-Control Resolution 1dB
Attenuation Absolute Accuracy
Compared to the ideal expected
attenuation
0.15/
-0.05
dB
Attenuation Relative Accuracy Between adjacent states
±0.05
dB
Gain Drift Over Temperature T
A
= -40°C to +85°C
±0.1
dB
Peak-to-peak for all settings,
F
CENTER
= 75MHz
0.1
Gain Flatness Over 50MHz BW
Peak-to-peak for all settings,
F
CENTER
= 200MHz
0.2
dB
Attenuator Switching Time 50% control to 90% RF 40 ns
Input Return Loss
f
R
= 50MHz to 250MHz, all gain conditions
15 dB
Output Return Loss
f
R
= 50MHz to 250MHz, all gain conditions
15 dB
Note 1: Guaranteed by design and characterization.
Note 2: All limits reflect losses of external components. Output measurements are taken at RF OUT using the typical application
circuit.