Rainbow Electronics MAX2656 - Manual (Page 10)

MAX2654/MAX2655/MAX2656
1575MHz/1900MHz Variable-IP3
Low-Noise Amplifiers
10 ______________________________________________________________________________________
0
16
14
12
10
8
6
4
2
1000 1600 1200 1400 2000 1800 2200
MAX2656
GAIN vs. FREQUENCY
MAX2654 toc46
FREQUENCY (MHz)
GAIN (dB)
HIGH-GAIN MODE
R BIAS = 392 Ω ±1%
R BIAS = 698 Ω ±1%
R BIAS = 511 Ω ±1%
-4
4
3
2
1
0
-1
-2
-3
1000 1600 1800 1200 1400 2000 2200
MAX2656
GAIN vs. FREQUENCY
MAX2654 toc47
FREQUENCY (MHz)
GAIN (dB)
LOW-GAIN MODE
R BIAS = 392 Ω ±1%
R BIAS = 715 Ω ±1%
R BIAS = 511 Ω ±1%
6
14
17
15
16
18
13
8
11
9
10
12
7
200 600 800 400 1000 1200 1400 1600
MAX2656
GAIN vs. R BIAS
MAX2654 toc48
R BIAS ( Ω)
GAIN (dB)
f IN = 1960MHz
HIGH-GAIN MODE
T A = +25 °C
T A = +85 °C
T A = -40 °C
-2
2
3
4
-1
0
1
200 600 800 400 1000 1200 1400 1600
MAX2656
GAIN vs. R BIAS
MAX2654 toc49
R BIAS ( Ω)
GAIN (dB)
f IN = 1960MHz
LOW-GAIN MODE
T A = +25 °C
T A = +85 °C
T A = -40 °C
0
1
2
3
2.5 4.0 4.5 3.0 3.5 5.0 5.5 6.0
MAX2656
GAIN vs. SUPPLY VOLTAGE
MAX2654 toc50
SUPPLY VOLTAGE (V)
GAIN (dB)
T A = +85°C
T A = +25°C
T A = -40°C
R BIAS = 511 Ω ±1%
f IN = 1960MHz
LOW-GAIN MODE
14.0
14.5
15.0
15.5
16.0
2.5 4.0 4.5 3.0 3.5 5.0 5.5 6.0
MAX2656
GAIN vs. SUPPLY VOLTAGE
MAX2654 toc51
SUPPLY VOLTAGE (V)
GAIN (dB)
R BIAS = 511 Ω ±1%
f 1 = 1960MHz
HIGH-GAIN MODE
T A = +25 °C
T A = +85 °C
T A = -40 °C
1.4
1.6
2.0
1.8
2.2
2.4
1500 1700 1800 1600 1900 2000 2100 2200 2300
MAX2656
NOISE FIGURE vs. FREQUENCY
MAX2654 toc52
FREQUENCY (MHz)
NOISE FIGURE (dB)
R BIAS = 715 Ω ±1%
R BIAS = 511 Ω ±1%
R BIAS = 392 Ω ±1%
2.2
2.0
2.4
1.8
1.6
1.4
1.2
1.0
-40 20 -20 0 40 60 80
MAX2656
NOISE FIGURE vs. TEMPERATURE
MAX2654 toc53
TEMPERATURE ( °C)
NOISE FIGURE (dB)
f 1 = 1960MHz
R
BIAS
= 511 Ω ±1%
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
-22
-24
1000 1600 1800 1200 1400 2000 2200
MAX2656
INPUT/OUTPUT RETURN LOSS vs. FREQUENCY
MAX2654 toc54
FREQUENCY (MHz)
INPUT/OUTPUT RETURN LOSS (dB)
LOW-GAIN MODE
INPUT
RETURN LOSS
OUTPUT
RETURN LOSS
Typical Operating Characteristics (continued)
(P IN = -30dBm, input and output are terminated to 50 Ω, V
CC = +3V, high-gain and low-gain modes are applicable only to the MAX2656,
T
A
= +25°C, unless otherwise noted.)