Typical operating characteristics (continued) – Rainbow Electronics MAX2645 User Manual
Page 5
MAX2645
3.4GHz to 3.8GHz SiGe
Low-Noise Amplifier/PA Predriver
_______________________________________________________________________________________
5
7
10
9
8
11
12
13
14
15
16
17
3.4
3.5
3.6
3.7
3.8
GAIN vs. FREQUENCY
(HIGH-GAIN MODE)
MAX2645-04
FREQUENCY (GHz)
GAIN (dB)
T
A
= +25
°C
T
A
= +85
°C
T
A
= -40
°C
LOW-NOISE FIGURE CIRCUIT
-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)
MAX2645-05
FREQUENCY (GHz)
GAIN (dB)
T
A
= +85
°C
T
A
= -40
°C
T
A
= +25
°C
LOW-NOISE FIGURE CIRCUIT
13.0
13.6
13.4
13.2
13.8
14.0
14.2
14.4
14.6
14.8
15.0
3.0
3.5
4.5
5.0
5.5
GAIN vs. SUPPLY VOLTAGE
(HIGH-GAIN MODE)
MAX2645-06
SUPPLY VOLTAGE (V)
GAIN (dB)
4.0
T
A
= +25
°C
T
A
= +85
°C
T
A
= -40
°C
LOW-NOISE FIGURE CIRCUIT
-11.0
-10.5
-10.0
-9.5
-9.0
-8.5
-8.0
-7.5
-7.0
3.0
3.5
4.0
4.5
5.0
5.5
GAIN vs. SUPPLY VOLTAGE
(LOW-GAIN MODE)
MAX2645-07
SUPPLY VOLTAGE (V)
GAIN (dB)
T
A
= -40
°C
T
A
= +25
°C
T
A
= +85
°C
LOW-NOISE FIGURE CIRCUIT
22.0
22.5
23.0
23.5
24.0
24.5
25.0
25.5
26.0
3.0
3.5
4.0
4.5
5.0
5.5
GAIN STEP
vs. SUPPLY VOLTAGE
MAX2645-08
SUPPLY VOLTAGE (V)
GAIN STEP (dB)
T
A
= +25
°C
T
A
= +85
°C
T
A
= -40
°C
LOW-NOISE FIGURE CIRCUIT
14.0
14.2
14.6
14.4
14.8
15.0
GAIN vs. R
BIAS
(HIGH-GAIN MODE)
MAX2645-09
R
BIAS
(k
Ω)
GAIN (dB)
15.0
20.0
17.5
22.5
25.0
V
CC
= 5V
V
CC
= 3.3V
LOW-NOISE FIGURE CIRCUIT
-12.0
-11.4
-11.6
-11.8
-11.2
-11.0
-10.8
-10.6
-10.4
-10.2
-10.0
15.0
17.5
20.0
22.5
25.0
GAIN vs. R
BIAS
(LOW-GAIN MODE)
MAX2645-10
R
BIAS
(k
Ω)
GAIN (dB)
V
CC
= 3.3V
V
CC
= 5V
LOW-NOISE FIGURE CIRCUIT
0
1
3
2
4
5
NOISE FIGURE vs. FREQUENCY
(HIGH-GAIN MODE)
MAX2645-11
FREQUENCY (GHz)
NOISE FIGURE (dB)
3.4
3.6
3.5
3.7
3.8
LOW-NOISE FIGURE CIRCUIT
10
13
12
11
14
15
16
17
18
19
20
3.4
3.5
3.6
3.7
3.8
NOISE FIGURE vs. FREQUENCY
(LOW-GAIN MODE)
MAX2645-12
FREQUENCY (GHz)
NOISE FIGURE (dB)
LOW-NOISE FIGURE CIRCUIT
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.)