Rainbow Electronics MAX2056 - Manual (Page 3)

MAX2056
800MHz to 1000MHz Variable-Gain
Amplifier with Analog Gain Control
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AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Operating Circuit with one attenuator connected, V CC = +4.75V to +5.25V, T A = -40°C to +85°C, unless otherwise noted.
Typical values are at V CC = +5.0V, R1 = 1.2k Ω, R2 = 3.92kΩ, P
OUT = +5dBm, f IN = 900MHz, V CNTL = 1V, 50 Ω system impedance,
second attenuator is not connected, T A = +25°C, unless otherwise noted.) (Note 3)
Note 1: Total supply current reduces as R1 and R2 are increased.
Note 2: Operating outside this range for extended periods may affect device reliability. Limit pin input current to 40mA when V
CC is
not present.
Note 3: All limits include external component losses, unless otherwise noted.
Note 4: Noise figure increases by approximately 1dB for every 1dB of gain reduction.
Note 5: f
1 = 900MHz, f 2 = 901MHz, +5dBm/tone at OUT.
Note 6: Switching time is measured from 50% of the control signal to when the RF output settles to ±1dB.
PARAMETER CONDITIONS MIN TYP MAX UNITS
T A = +25°C to +85°C -0.46 Output 3rd-Order Intercept Point
Variation Over Temperature
T
A
= +25°C to -40°C +1.35
dB
2nd Harmonic
From maximum gain to 15dB attenuation, P OUT =
+5dBm
-55 dBc
3rd Harmonic
From maximum gain to 15dB attenuation, P OUT =
+5dBm
-68 dBc
One attenuator 18.3 22.3
RF Gain-Control Range
f RF = 800MHz to 1000MHz,
V CNTL = 1V to 4.5V Two attenuators 36.6 44.6
dB
RF Gain-Control Slope -10.7 dB/V
Maximum RF Gain-Control Slope Maximum slope vs. gain-control voltage -17.2 dB/V
Gain Flatness Over 100MHz Bandwidth Peak-to-peak for all settings 0.15 dB
Attenuator Switching Time 15dB attenuation change (Note 6) 500 ns
Attenuator Insertion Loss Second attenuator (IN_A, OUT_A) 1.7 dB
Input Return Loss Entire band, all gain settings 15 dB
Output Return Loss Entire band, all gain settings 15 dB
Group Delay Input/output 50 Ω lines de-embedded 600 ps
Group Delay Flatness Over 100MHz
Bandwidth
Peak to peak 100 ps
Group Delay Change vs. Gain Control V CNTL = 1V to 4V 100 ps
Insertion Phase Change vs. Gain Control V CNTL = 1V to 4V 20 degrees