Rainbow-electronics MAX2057 Manual do Utilizador descarregar pdf (Página 7)

MAX2057

1700MHz to 2500MHz Variable-Gain

Amplifier with Analog Gain Control

_______________________________________________________________________________________ 7

Typical Operating Characteristics

Two Attenuator Configuration

(Typical Application Circuit with two attenuators connected, V

= +5.0V, R1 = 1.2kΩ, R2 = 2kΩ, f

= 2100MHz, maximum gain

setting, P

OUT

= +5dBm, linearity measured at P

OUT

= +5dBm/tone, T

= +25°C, unless otherwise noted.)

INPUT RETURN LOSS

vs. RF FREQUENCY

MAX2057 toc24

RF FREQUENCY (MHz)

INPUT RETURN LOSS (dB)

230021001700 1900

1500 2500

= +25°C

= -40°C

= +85°C

OUTPUT RETURN LOSS

vs. RF FREQUENCY

MAX2057 toc25

RF FREQUENCY (MHz)

OUTPUT RETURN LOSS (dB)

230021001700 1900

1500 2500

= -40°C

= +25°C

= +85°C

GAIN vs. GAIN-CONTROL VOLTAGE

MAX2057 toc26

CNTL

(V)

GAIN (dB)

3.53.02.52.01.5

-25

-15

-5

-35

1.0 4.0

= -40°C

= +25°C

= +85°C

GAIN vs. RF FREQUENCY

MAX2057 toc27

RF FREQUENCY (MHz)

GAIN (dB)

2300210019001700

1500 2500

= -40°C

= +25°C

= +85°C

1 2 3 4 5 6 7 8 9 10 11 12

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