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MAX2056

800MHz to 1000MHz Variable-Gain Amplifier with Analog Gain Control

Maxim Integrated 

800MHz to 1000MHz Variable-Gain

Amplifier with Analog Gain Control

AC ELECTRICAL CHARACTERISTICS (continued)

(Typical Operating Circuit with one attenuator connected, VCC = +4.75V to +5.25V, TA = -40°C to +85°C, unless otherwise noted.

Typical values are at VCC = +5.0V, R1 = 1.2kΩ, R2 = 3.92kΩ, POUT = +5dBm, fIN = 900MHz, VCNTL = 1V, 50Ω system impedance,

second attenuator is not connected, TA = +25°C, unless otherwise noted.) (Note 3)

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

Output 3rd-Order Intercept Point

Variation Over Temperature

TA = +25°C to +85°C

TA = +25°C to -40°C

-0.46

dB

+1.35

2nd Harmonic

From maximum gain to 15dB attenuation, POUT =

-55

dBc

+5dBm

3rd Harmonic

From maximum gain to 15dB attenuation, POUT =

-68

dBc

+5dBm

RF Gain-Control Range

RF Gain-Control Slope

Maximum RF Gain-Control Slope

Gain Flatness Over 100MHz Bandwidth

Attenuator Switching Time

Attenuator Insertion Loss

Input Return Loss

Output Return Loss

Group Delay

fRF = 800MHz to 1000MHz, One attenuator

VCNTL = 1V to 4.5V

Two attenuators

Maximum slope vs. gain-control voltage

Peak-to-peak for all settings

15dB attenuation change (Note 6)

Second attenuator (IN_A, OUT_A)

Entire band, all gain settings

Entire band, all gain settings

Input/output 50Ω lines de-embedded

18.3 22.3

36.6 44.6

-10.7

-17.2

0.15

500

1.7

15

15

600

dB

dB/V

dB/V

dB

ns

dB

dB

dB

ps

Group Delay Flatness Over 100MHz

Bandwidth

Peak to peak

100

ps

Group Delay Change vs. Gain Control VCNTL = 1V to 4V

Insertion Phase Change vs. Gain Control VCNTL = 1V to 4V

100

ps

20

degrees

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 VCC 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: f1 = 900MHz, f2 = 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.

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