Datasheet

MAX2065
50MHz to 1000MHz High-Linearity, Serial/
Parallel-Controlled Analog/Digital VGA
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
CC
= +5.0V, HC mode, both attenuators set for maximum gain, P
IN
= -20dBm, f
RF
= 200MHz, and T
C
= +25°C, internal DAC refer-
ence used, unless otherwise noted.)
NOISE FIGURE vs. RF FREQUENCY
MAX2065 toc19
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
250 450 650 850
11
4
8
6
10
9
7
5
50 1050
T
C
= +85°C
T
C
= +25°C
T
C
= -40°C
NOISE FIGURE vs. RF FREQUENCY
MAX2065 toc20
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
250 450 650 850
11
4
8
6
10
9
7
5
50 1050
V
CC
= 5.25V
V
CC
= 4.75V
V
CC
= 5.00V
OUTPUT P1dB vs. RF FREQUENCY
MAX2065 toc21
RF FREQUENCY (MHz)
OUTPUT P1dB (dBm)
250 450 650 850
21
15
17
20
19
18
16
50 1050
T
C
= -40°C
T
C
= +25°C
T
C
= +85°C
OUTPUT P1dB vs. RF FREQUENCY
MAX2065 toc22
RF FREQUENCY (MHz)
OUTPUT P1dB (dBm)
250 450 650 850
21
15
17
20
19
18
16
50 1050
V
CC
= 4.75V
V
CC
= 5.00V
V
CC
= 5.25V
OUTPUT IP3 vs. RF FREQUENCY
MAX2065 toc23
RF FREQUENCY (MHz)
OUTPUT IP3 (dBm)
250 450 650 850
50
30
45
40
35
50 1050
T
C
= -40°C
T
C
= +25°C
T
C
= +85°C
P
OUT
= 0dBm/TONE
OUTPUT IP3 vs. RF FREQUENCY
MAX2065 toc24
RF FREQUENCY (MHz)
OUTPUT IP3 (dBm)
250 450 650 850
50
30
45
40
35
50 1050
V
CC
= 4.75V
V
CC
= 5.25V
V
CC
= 5.00V
P
OUT
= 0dBm/TONE
OUTPUT IP3
vs. DIGITAL ATTENUATOR STATE
MAX2065 toc25
DIGITAL ATTENUATOR STATE (dB)
OUTPUT IP3 (dBm)
4 8 12 16 20 24 28
42
38
41
40
39
032
T
C
= +25°C LSB, USB
T
C
= +85°C LSB, USB
T
C
= -40°C LSB, USB
P
OUT
= -3dBm/TONE
RF = 200MHz
OUTPUT IP3
vs. ANALOG ATTENUATOR STATE
MAX2065 toc26
DAC CODE
OUTPUT IP3 (dBm)
32 64 96 128 160 192 224
45
25
40
35
30
0 256
T
C
= -40°C, +25°C, +85°C TONE = LSB, USB
P
OUT
= -3dBm/TONE
RF = 200MHz
2nd HARMONIC vs. RF FREQUENCY
MAX2065 toc27
RF FREQUENCY (MHz)
2nd HARMONIC (dBc)
250 450 650 850
80
40
70
60
50
50 1050
P
OUT
= 3dBm
T
C
= -40°C
T
C
= +25°C
T
C
= +85°C