Typical operating characteristics (continued) – Rainbow Electronics MAX2645 User Manual
Page 7
MAX2645
3.4GHz to 3.8GHz SiGe
Low-Noise Amplifier/PA Predriver
_______________________________________________________________________________________
7
1.0
2.5
2.0
1.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
3.4
3.5
3.6
3.7
3.8
OUTPUT VSWR vs. FREQUENCY
MAX2645-22
FREQUENCY (GHz)
VSWR
LOW GAIN
HIGH GAIN
LOW-NOISE FIGURE CIRCUIT
-35
-25
-30
-15
-20
-5
-10
0
REVERSE ISOLATION vs. FREQUENCY
MAX2645-23
FREQUENCY (GHz)
REVERSE ISOLATION (dB)
3.4
3.5
3.6
3.7
3.8
LOW GAIN
HIGH GAIN
LOW-NOISE FIGURE CIRCUIT
12.0
13.5
13.0
12.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
3.4
3.5
3.6
3.7
3.8
GAIN vs. FREQUENCY
(HIGH-GAIN MODE)
MAX2645-24
FREQUENCY (GHz)
GAIN (dB)
HIGH-INPUT IP3 CIRCUIT
T
A
= +25°C
T
A
= +85°C
T
A
= -40°C
-15.0
-13.5
-14.0
-14.5
-13.0
-12.5
-12.0
-11.5
-11.0
-10.5
-10.0
3.4
3.5
3.6
3.7
3.8
GAIN vs. FREQUENCY
(LOW-GAIN MODE)
MAX2645-25
FREQUENCY (GHz)
GAIN (dB)
T
A
= +25
°C
T
A
= +85
°C
T
A
= -40
°C
HIGH-INPUT IP3 CIRCUIT
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
3.4
3.5
3.6
3.7
3.8
INPUT VSWR
vs. FREQUENCY
MAX2645-26
FREQUENCY (GHz)
VSWR
LOW GAIN
HIGH GAIN
HIGH-INPUT IP3 CIRCUIT
10
13
12
11
14
15
16
17
18
19
20
3.4
3.5
3.6
3.7
3.8
GAIN vs. FREQUENCY
(HIGH-GAIN MODE)
MAX2645-27
FREQUENCY (GHz)
GAIN (dB)
PA PREDRIVER CIRCUIT
T
A
= +25
°C
T
A
= +85
°C
T
A
= -40
°C
V
CC
= 5V
-15
-12
-13
-14
-11
-10
-9
-8
-7
-6
-5
3.4
3.5
3.6
3.7
3.8
GAIN vs. FREQUENCY
(LOW-GAIN MODE)
MAX2645-28
FREQUENCY (GHz)
GAIN (dB)
T
A
= +25
°C
T
A
= +85
°C
T
A
= -40
°C
PA PREDRIVER CIRCUIT
V
CC
= 5V
12.5
13.0
13.5
14.0
14.5
15.0
15.5
16.0
16.5
3.0
3.5
4.0
4.5
5.0
5.5
GAIN vs. SUPPLY VOLTAGE
(HIGH-GAIN MODE)
MAX2645-29
SUPPLY VOLTAGE (V)
GAIN (dB)
T
A
= +85
°C
T
A
= -40
°C
T
A
= +25
°C
PA PREDRIVER CIRCUIT
V
CC
= 5V
-12.5
-12.0
-11.5
-11.0
-10.5
-10.0
-9.5
-9.0
-8.5
3.0
3.5
4.0
4.5
5.0
5.5
GAIN vs. SUPPLY VOLTAGE
(LOW-GAIN MODE)
MAX2645-30
SUPPLY VOLTAGE (V)
GAIN (dB)
T
A
= +25
°C
T
A
= +85
°C
T
A
= -40
°C
PA PREDRIVER CIRCUIT
V
CC
= 5V
Typical Operating Characteristics (continued)
(MAX2645 EV kit, V
CC
= +3.3V, R
BIAS
= 20k
Ω, f
RFIN
= 3550MHz, T
A
= +25°C, unless otherwise noted.)