MAX9931 Maxim, MAX9931 Datasheet - Page 4

• 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

2MHz to 1.6GHz 45dB RF-Detecting
Controllers and RF Detector
(V
otherwise noted.)
4
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
27
26
25
24
23
22
21
_______________________________________________________________________________________
-60
-60
0
= 3V, SHDN = V
-50
-50
SET AND LOG CONFORMANCE
vs. INPUT POWER AT 50MHz
300
LOG SLOPE vs. FREQUENCY
T
T
A
A
900MHz
= -40°C
SET vs. INPUT POWER
= +85°C
-40
-40
INPUT POWER (dBm)
INPUT POWER (dBm)
600
FREQUENCY (MHz)
1.6GHz
MAX9930
MAX9930
MAX9930
-30
-30
T
900
A
T
2MHz
CC
T
A
= +85°C
A
T
-20
-20
= -40°C
= +25°C
A
, T
= +25°C
50MHz
1200
A
-10
-10
= +25°C, all log conformance plots are normalized to their respective temperatures, T
1500
MAX9930 toc04
0
0
1800
10
10
4
3
2
1
0
-1
-2
-3
-4
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
-1
-2
-3
-4
29
28
27
26
25
24
23
22
4
3
2
1
0
-60
-60
2.5
LOG CONFORMANCE vs. INPUT POWER
1.6GHz
SET AND LOG CONFORMANCE
-50
-50
vs. INPUT POWER AT 900MHz
3.0
1.6GHz
-40
-40
LOG SLOPE vs. V
INPUT POWER (dBm)
INPUT POWER (dBm)
3.5
2MHz
900MHz
MAX9930
MAX9930
MAX9930
-30
50MHz
-30
900MHz
V
T
T
CC
A
T
4.0
A
A
= +25°C
= +85°C
(V)
= -40°C
-20
Typical Operating Characteristics
-20
2MHz
4.5
-10
-10
CC
50MHz
MAX9930 toc05
5.0
0
0
10
10
5.5
4
3
2
1
0
-1
-2
-3
-4
-60
-62
-64
-66
-68
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
-60
-60
0
LOG INTERCEPT vs. FREQUENCY
-50
-50
SET AND LOG CONFORMANCE
SET AND LOG CONFORMANCE
vs. INPUT POWER AT 1.6GHz
T
vs. INPUT POWER AT 2MHz
A
= +25°C
400
-40
-40
INPUT POWER (dBm)
INPUT POWER (dBm)
FREQUENCY (MHz)
MAX9930
MAX9930
MAX9930
-30
-30
T
A
T
A
T
A
T
T
A
800
= +25°C, unless
= +85°C
A
= +25°C
T
A
= +25°C
A
= +85°C
= -40°C
T
-20
-20
= -40°C
A
= -40°C
-10
T
-10
1200
A
= +85°C
MAX9930 toc06
MAX9930 toc03
0
0
1600
10
10
4
3
2
1
0
-1
-2
-3
-4
4
3
2
1
0
-1
-2
-3
-4