Rainbow Electronics MAX2057 - Manual (Page 3)

MAX2057
1700MHz to 2500MHz 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 = 2kΩ, P
OUT = +5dBm, f IN = 2100MHz, 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 R 1 and R 2 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 = 2100MHz, f 2 = 2101MHz, +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 -0.83 Output 3rd-Order Intercept Point
Variation Over Temperature
T A = +25°C to -40°C -0.6
dB
2nd Harmonic From maximum gain to 15dB attenuation, P OUT = +5dBm -65 dBc
3rd Harmonic From maximum gain to 15dB attenuation, P OUT = +5dBm -83 dBc
One attenuator 17 20.7
RF Gain-Control Range
f
RF
= 1.7GHz to 2.2GHz,
V CNTL = 1V to 4.5V Two attenuators 34 42.4
dB
RF Gain-Control Slope V CNTL = 1.8V to 3.5V -10 dB/V
Maximum RF Gain-Control Slope Maximum slope vs. gain-control voltage -15.2 dB/V
Gain Flatness Over
100MHz Bandwidth
Peak-to-peak for all settings 0.5 dB
Attenuator Switching Time 15dB attenuation change (Note 6) 500 ns
Attenuator Insertion Loss Second attenuator (IN_A, OUT_A) 2.2 dB
Input Return Loss Entire band, all gain settings 18 dB
Output Return Loss Entire band, all gain settings 15 dB
Group Delay Input/output 50 Ω lines de-embedded 300 ps
Group Delay Flatness Over
100MHz Bandwidth
Peak to peak 20 ps
Group Delay Change vs. Gain
Control
V CNTL = 1V to 4V -70 ps
Insertion Phase Change vs. Gain
Control
V
CNTL
= 1V to 4V 50 degrees