Owner manual

8 ______________________________________________________________________________________
MAX2062
Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Analog/Digital VGA
Typical Operating Characteristics (continued)
(Typical Application Circuit, V
CC
= V
CC_AMP_1
= V
CC_AMP_2
= V
CC_RG
= 5.0V, attenuators are set for maximum gain, RF ports are
driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, P
IN
= -20dBm, f
RF
= 350MHz, and T
C
= +25NC, unless otherwise noted.)
GAIN vs. ANALOG ATTENUATOR SETTING
MAX2062 toc13
ANALOG ATTENUATOR SETTING (DAC CODE)
GAIN (dB)
22419232 64 96 128 160
-13
-8
-3
2
7
12
17
22
-18
0 256
50MHz
200MHz
350MHz
1000MHz
GAIN vs. ANALOG ATTENUATOR SETTING
MAX2062 toc14
ANALOG ATTENUATOR SETTING (DAC CODE)
GAIN (dB)
22419232 64 96 128 160
-13
-8
-3
2
7
12
17
22
-18
0 256
T
C
= -40°C, +25°C, +85°C
RF = 350MHz
GAIN vs. ANALOG ATTENUATOR SETTING
MAX2062 toc15
ANALOG ATTENUATOR SETTING (DAC CODE)
GAIN (dB)
22419232 64 96 128 160
-13
-8
-3
2
7
12
17
22
-18
0 256
V
CC
= 4.75V, 5.00V, 5.25V
RF = 350MHz
INPUT MATCH vs. ANALOG
ATTENUATOR SETTING
MAX2062 toc16
INPUT MATCH (dB)
-25
-20
-15
-10
-5
0
-30
ANALOG ATTENUATOR SETTING (DAC CODE)
22419232 64 96 128 1600 256
1000MHz
350MHz
50MHz
200MHz
OUTPUT MATCH vs. ANALOG
ATTENUATOR SETTING
MAX2062 toc17
OUTPUT MATCH (dB)
-40
-30
-20
-10
0
-50
ANALOG ATTENUATOR SETTING (DAC CODE)
22419232 64 96 128 1600 256
1000MHz
50MHz, 200MHz, 350MHz
CHANNEL-TO-CHANNEL ISOLATION
vs. RF FREQUENCY
MAX2062 toc18
RF FREQUENCY (MHz)
CHANNEL-TO-CHANNEL ISOLATION (dB)
850650450250
70
60
50
40
30
20
10
80
50 1050
BOTH DIGITAL ATTENUATORS = 0dB
BOTH ANALOG ATTENUATORS = CODE 0
BOTH ANALOG ATTENUATORS = CODE 255
REVERSE ISOLATION OVER ANALOG
ATTENUATOR SETTING vs. RF FREQUENCY
MAX2062 toc19
RF FREQUENCY (MHz)
REVERSE ISOLATION OVER ANALOG
ATTENUATOR SETTING (dB)
850650450250
80
70
60
50
40
30
90
50 1050
DAC CODE 0
DAC CODE 255
S21 PHASE CHANGE
vs. ANALOG ATTENUATOR SETTING
MAX2062 toc20
S21 PHASE CHANGE (DEGREES)
-40
-20
0
20
40
60
80
-60
ANALOG ATTENUATOR SETTING (DAC CODE)
224 25619232 64 96 128 1600
REFERENCED TO HIGH GAIN STATE
POSITIVE PHASE = ELECTRICALLY SHORTER
1000MHz
350MHz
200MHz
50MHz
NOISE FIGURE vs. RF FREQUENCY
MAX2062 toc21
RF FREQUENCY (MHz)
NOISE FIGURE (dB)
850650450250
5
6
7
8
9
10
11
4
50 1050
T
C
= +85°C
T
C
= -40°C
T
C
= +25°C