Rainbow Electronics MAX2056 - Manual (Page 7)

MAX2056
800MHz to 1000MHz Variable-Gain
Amplifier with Analog Gain Control
_______________________________________________________________________________________ 7
40
30
35
20
25
15
10
5
0
700 900 1000 800 1100 1200 1300 1400 1500
INPUT RETURN LOSS
vs. RF FREQUENCY
MAX2056 toc24
RF FREQUENCY (MHz)
INPUT RETURN LOSS (dB)
T A = +85 °C T A = +25 °C
T A = -40 °C
30
25
20
15
10
5
0
MAX2056 toc25
700 900 1000 800 1100 1200 1300 1400 1500
OUTPUT RETURN LOSS
vs. RF FREQUENCY
RF FREQUENCY (MHz)
OUTPUT RETURN LOSS (dB)
T A = +85 °C
T A = +25 °C
T A = -40 °C
-25
-35
1.0 1.5 2.0 2.5 3.0 3.5 4.0
-5
-15
5
15
GAIN vs. V
CNTL
MAX2056 toc26
V CNTL (V)
GAIN (dB)
T A = +85 °C
T A = +25 °C
T A = -40 °C
7
9
13
11
15
17
700 900 1000 800 1100 1200 1300 1400 1500
GAIN vs. RF FREQUENCY
MAX2056 toc27
RF FREQUENCY (MHz)
GAIN (dB)
T A = +85 °C
T A = +25 °C
T A = -40 °C
35
30
25
20
MAX2056 toc28
ISOLATION (dB)
700 900 1100 1300 1500
REVERSE ISOLATION
vs. RF FREQUENCY
RF FREQUENCY (MHz)
T A = +85 °C
T A = +25 °C T A = -40 °C
MAX2056 toc29
30
25
20
15
10
5
0
INPUT RETURN LOSS
vs. RF FREQUENCY
INPUT RETURN LOSS (dB)
700 900 800 1000 1100 1200 1300 1400 1500
RF FREQUENCY (MHz)
MAXIMUM GAIN
42dB GAIN REDUCTION
MAX2056 toc30
30
25
20
15
10
5
0
OUTPUT RETURN LOSS
vs. RF FREQUENCY
OUTPUT RETURN LOSS (dB)
700 900 800 1000 1100 1200 1300 1400 1500
RF FREQUENCY (MHz)
MAXIMUM GAIN
42dB GAIN REDUCTION
-45
-35
-15
-25
5
15
-5
25
MAX2056 toc31
GAIN (dB)
GAIN vs. RF FREQUENCY
700 900 800 1000 1100 1200 1300 1400 1500
RF FREQUENCY (MHz)
44dB GAIN REDUCTION
MAXIMUM GAIN
Typical Operating Characteristics
Two Attenuator Configuration
(Typical Application Circuit with two attenuators connected, V CC = +5.0V, R1 = 1.2k Ω, R2 = 3.92kΩ, f
IN = 900MHz maximum gain
setting, P OUT = +5dBm, linearity measured at P OUT = +5dBm/tone, T A = +25°C, unless otherwise noted.)