Datasheet

MAX2055
Digitally Controlled, Variable-Gain, Differential
ADC Driver/Amplifier
_______________________________________________________________________________________ 7
Typical Operating Characteristics (continued)
(Circuit of Figure 2, V
CC
= 5.0V, R
1
= 909Ω, max gain, (B0 = B1 = B2 = B3 = B4 = 0), P
OUT
= 5dBm, T
A
= +25°C, unless otherwise
noted.)
NOISE FIGURE vs. FREQUENCY
MAX2055 toc33
FREQUENCY (MHz)
NOISE FIGURE (dB)
27024060 90 120 180150 210
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
4.0
30 300
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
OUTPUT P-1dB vs. FREQUENCY
MAX2055 toc34
FREQUENCY (MHz)
OUTPUT P-1dB (dBm)
27024060 90 120 180150 210
22
23
24
25
26
27
21
30 300
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
OUTPUT P-1dB vs. FREQUENCY
MAX2055 toc35
FREQUENCY (MHz)
OUTPUT P-1dB (dBm)
27024060 90 120 180150 210
22
23
24
25
26
27
21
30 300
V
CC
= +4.75V
V
CC
= +5V
V
CC
= +5.25V
OUTPUT IP3 vs. FREQUENCY
MAX2055 toc36
FREQUENCY (MHz)
OIP3 (dBm)
27024060 90 120 180150 210
32
34
36
38
42
40
44
30
30 300
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
P
RF1
= P
RF2
= 5dBm
AT OUTPUT, Δf = 1MHz
OUTPUT IP3 vs. FREQUENCY
MAX2055 toc37
FREQUENCY (MHz)
OIP3 (dBm)
27024060 90 120 180150 210
32
34
36
38
42
40
44
30
30 300
V
CC
= +5.25V
V
CC
= +4.75V
V
CC
= +5V
P
RF1
= P
RF2
= 5dBm
AT OUTPUT, Δf = 1MHz
INPUT IP3 vs. ATTENUATION STATE
MAX2055 toc38
ATTENUATION STATE
IIP3 (dBm)
20164 8 12
20
25
30
35
40
45
50
55
15
024
P
RF1
= P
RF2
= 5dBm
AT OUTPUT, Δf = 1MHz,
f
IN
= 70MHz
3RD HARMONIC vs. FREQUENCY
MAX2055 toc39
FREQUENCY (MHz)
HARMONIC (dBc)
27024060 90 120 180150 210
-80
-75
-70
-65
-60
-55
-85
30 300
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C
3RD HARMONIC vs. FREQUENCY
MAX2055 toc40
FREQUENCY (MHz)
HARMONIC (dBc)
27024060 90 120 180150 210
-80
-75
-70
-65
-60
-55
-85
30 300
V
CC
= +4.75V
V
CC
= +5V
V
CC
= +5.25V
2ND HARMONIC vs. FREQUENCY
MAX2055 toc41
FREQUENCY (MHz)
HARMONIC (dBc)
27024060 90 120 180150 210
-80
-75
-70
-65
-60
-55
-50
-85
-90
30 300
T
A
= +85°C
T
A
= -40°C
T
A
= +25°C