MAX9931 Maxim, MAX9931 Datasheet - Page 7

• Manufacturer Part Number: MAX9931
• Description: The MAX9930–MAX9933 low-cost, low-power logarithmic amplifiers are designed to control RF power amplifiers (PA) and transimpedance amplifiers (TIA), and to detect RF power levels
• Manufacturer: Maxim

(V
otherwise noted.)
-40
-42
-44
-46
-48
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
CC
-40
-60
0
= 3V, SHDN = V
900MHz
LOG INTERCEPT vs. FREQUENCY
-50
SET AND LOG CONFORMANCE
vs. INPUT POWER AT 1.6GHz
-30
T
A
OUT vs. INPUT POWER
400
= +25°C
-40
INPUT POWER (dBm)
INPUT POWER (dBm)
-20
FREQUENCY (MHz)
MAX9932
T
MAX9933
MAX9932
1.6GHz
A
-30
= -40°C
800
-10
_______________________________________________________________________________________
_______________________________________________________________________________________
T
T
T
CC
A
A
A
-20
= +25°C
= +85°C
= -40°C
, T
2MHz
0
50MHz
A
-10
1200
= +25°C, all log conformance plots are normalized to their respective temperatures, T
T
A
MAX9930 toc28
= +85°C
10
0
2MHz to 1.6GHz 45dB RF-Detecting
1600
20
10
4
3
2
1
0
-1
-2
-3
-4
Typical Operating Characteristics (continued)
-41
-43
-45
-47
-49
-51
-53
-55
29
28
27
26
25
24
23
-1
-2
-3
-4
4
3
2
1
0
-60
2.5
0
LOG CONFORMANCE vs. INPUT POWER
Controllers and RF Detector
-50
300
3.0
1.6GHz
LOG SLOPE vs. FREQUENCY
LOG INTERCEPT vs. V
-40
900MHz
INPUT POWER (dBm)
600
FREQUENCY (MHz)
3.5
50MHz
T
MAX9933
MAX9932
MAX9932
A
2MHz
-30
50MHz
900MHz
= +25°C
V
T
1.6GHz
CC
900
A
4.0
= +85°C
(V)
-20
T
1200
2MHz
A
4.5
= -40°C
-10
CC
1500
5.0
0
1800
5.5
10
-0.1
-0.2
-0.3
-0.4
-0.5
0.1
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
29
28
27
26
25
24
23
22
0
-60
-50
2.5
LOG CONFORMANCE vs. TEMPERATURE
OUTPUT AND LOG CONFORMANCE
-50
-25
3.0
vs. INPUT POWER AT 2MHz
1.6GHz
-40
LOG SLOPE vs. V
INPUT POWER (dBm)
TEMPERATURE (°C)
3.5
0
MAX9932
MAX9933
MAX9932
-30
V
CC
4.0
INPUT POWER = -10dBm
f
25
2MHz
RF
(V)
A
T
T
T
-20
= 50MHz
A
A
900MHz
A
= +25°C, unless
50MHz
= +85°C
= +25°C
= -40°C
4.5
50
-10
CC
MAX9930 toc36
5.0
75
0
100
5.5
10
7
7
4
3
2
1
0
-1
-2
-3
-4