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MAX2057ETX-T
(Rev.:2010)

1300MHz to 2700MHz Variable-Gain Amplifier with Analog Gain Control

Maxim Integrated 

1300MHz to 2700MHz 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, fIN = 1700MHz to

2500MHz, unless otherwise noted. Typical values are at VCC = +5.0V, R1 = 1.2kΩ, R2 = 2kΩ, POUT = +5dBm, fIN = 2100MHz,

VCNTL = 1V, 50Ω system impedance, second attenuator is not connected, TA = +25°C, unless otherwise noted.) (Note 3)

PARAMETER

Reverse Isolation

Noise Figure

Output 1dB Compression Point

(Note 5)

CONDITIONS

MIN TYP MAX UNITS

37

dB

6

dB

+23.8

dBm

Output 2nd-Order Intercept Point

From maximum gain to 15dB attenuation, measured at

f1 + f2 (Note 6)

Output 3rd-Order Intercept Point From maximum gain to 15dB attenuation (Note 5)

Output 3rd-Order Intercept Point

Variation Over Temperature

2nd Harmonic

TA = +25°C to +85°C

TA = +25°C to -40°C

From maximum gain to 15dB attenuation, POUT = +5dBm

3rd Harmonic

RF Gain-Control Range

From maximum gain to 15dB attenuation, POUT = +5dBm

fIN = 1700MHz to 2200MHz, One attenuator

17

VCNTL = 1V to 4V

Two attenuators

34

fIN = 1450MHz to 1560MHz, One attenuator

17

VCNTL = 1V to 4V

Two attenuators

34

RF Gain-Control Slope

VCNTL = 1.8V to 3.5V

Maximum RF Gain-Control Slope Maximum slope vs. gain-control voltage

+64

+37

-0.83

-0.6

-65

-83

20.7

42.4

22

44

-10

-15.2

dBm

dBm

dB

dBc

dBc

dB

dB/V

dB/V

Gain Flatness Over

100MHz Bandwidth

Peak-to-peak for all settings

0.5

dB

Attenuator Switching Time

Attenuator Insertion Loss

Input Return Loss

Output Return Loss

Group Delay

Group Delay Flatness Over

100MHz Bandwidth

15dB attenuation change (Note 7)

Second attenuator (IN_A, OUT_A)

Entire band, all gain settings

Entire band, all gain settings

Input/output 50
lines de-embedded

Peak to peak

500

ns

2.2

dB

18

dB

15

dB

300

ps

20

ps

Group Delay Change vs. Gain

Control

VCNTL = 1V to 4V

-70

ps

Insertion Phase Change vs. Gain

Control

VCNTL = 1V to 4V

50

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: Operation outside this range is possible, but with degraded performance of some parameters.

Note 4: All limits include external component losses, unless otherwise noted.

Note 5: Noise figure increases by approximately 1dB for every 1dB of gain reduction.

Note 6: f1 = 2100MHz, f2 = 2101MHz, +5dBm/tone at OUT.

Note 7: Switching time is measured from 50% of the control signal to when the RF output settles to ±1dB.

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