Rainbow Electronics MAX2057 - Manual (Page 8)

MAX2057
1700MHz to 2500MHz Variable-Gain
Amplifier with Analog Gain Control
8 _______________________________________________________________________________________
OUTPUT IP3 vs. RF FREQUENCY
MAX2057 toc34
RF FREQUENCY (MHz)
OUTPUT IP3 (dBm)
2300 2100 1900 1700
32
34
36
38
40
30
1500 2500
T A = +85 °C
T A = +25 °C
T A = -40 °C
OUTPUT IP2 vs. RF FREQUENCY
MAX2057 toc35
RF FREQUENCY (MHz)
OUTPUT IP2 (dBm)
2300 2100 1900 1700
50
55
60
65
70
75
45
1500 2500
T A = +85 °C
T A = +25 °C
T A = -40 °C
Typical Operating Characteristics (continued)
Two Attenuator Configuration
(Typical Application Circuit with two attenuators connected, V
CC
= +5.0V, R1 = 1.2k Ω, R2 = 2kΩ, f
IN
= 2100MHz, maximum gain
setting, P
OUT
= +5dBm, linearity measured at P
OUT
= +5dBm/tone, T
A
= +25°C, unless otherwise noted.)
REVERSE ISOLATION
vs. RF FREQUENCY
MAX2057 toc28
RF FREQUENCY (MHz)
REVERSE ISOLATION (dB)
2300 2100 1900 1700
35
40
45
30
1500 2500
T A = +25 °C
T A = +85 °C
T A = -40 °C
INPUT RETURN LOSS
vs. RF FREQUENCY
MAX2057 toc29
RF FREQUENCY (MHz)
INPUT RETURN LOSS (dB)
2300 2100 1700 1900
35
30
25
20
15
10
5
0
40
1500 2500
MAXIMUM GAIN
6dB GAIN REDUCTION
12dB, 18dB, 24dB, 30dB
GAIN REDUCTION
OUTPUT RETURN LOSS
vs. RF FREQUENCY
MAX2057 toc30
RF FREQUENCY (MHz)
OUTPUT RETURN LOSS (dB)
2300 2100 1700 1900
35
30
25
20
15
10
5
0
40
1500 2500
6dB, 12dB, 18dB, 24dB,
30dB GAIN REDUCTION
MAXIMUM GAIN
GAIN vs. RF FREQUENCY
MAX2057 toc31
RF FREQUENCY (MHz)
GAIN (dB)
2300 2100 1900 1700
-20
-15
-5
-10
0
5
10
15
20
-25
1500 2500
MAXIMUM GAIN
30dB GAIN REDUCTION
REVERSE ISOLATION
vs. RF FREQUENCY
MAX2057 toc32
RF FREQUENCY (MHz)
REVERSE ISOLATION (dB)
2300 2100 1700 1900
30
40
50
60
70
80
20
1500 2500
30dB GAIN REDUCTION
MAXIMUM GAIN
NOISE FIGURE vs. RF FREQUENCY
MAX2057 toc33
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
2300 2100 1700 1900
7.0
7.5
6.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
6.0
1500 2500
T A = +85 °C
T A = +25 °C
T A = -40 °C