MAX19792 Datasheet, PDF (7/23 Pages) Maxim Integrated Products – 500MHz to 4000MHz Dual Analog Voltage Variable Attenuator with On-Chip 10-Bit SPI-Controlled DAC

MAX19792
500MHz to 4000MHz Dual Analog Voltage Variable
Attenuator with On-Chip 10-Bit SPI-Controlled DAC
Typical Operating Characteristics
(Typical Application Circuit, V_CC = 5V, configured for single attenuator, RF ports are driven from 50I sources and loaded into 50I,
V_{DAC_LOGIC} = 0V, RDBK_EN = Logic 0, V_CTRL = 1V, P_IN = 0dBm, f_RF = 1500MHz, T_C = 25°C, unless otherwise noted.).
SUPPLY CURRENT vs. VCC
15
T_C = +85°C
14
T_C = +25°C
13
INPUT MATCH vs. RF FREQUENCY
OVER CODE SETTINGS
0
-10
OUTPUT MATCH vs. RF FREQUENCY
OVER CODE SETTINGS
0
-10
-20
12
-30
-20
11
TC = -40°C
-40
10
4.750
0
-10
-20
-30
500
4.875 5.000 5.125 5.250
VCC (V)
S21 vs. RF FREQUENCY
OVER CODE SETTINGS
-30
500
0
-5
-10
-15
-20
-25
1200 1900 2600 3300 4000
RF FREQUENCY (MHz)
-30
0
S21 vs. DAC CODE
0
950MHz
-5
1500MHz
-10 ^3500MHz
2250MHz
-15
-20
1200 1900 2600 3300 4000
RF FREQUENCY (MHz)
INPUT MATCH vs. DAC CODE
3500MHz
1500MHz
950MHz
2250MHz
256
512
768
1024
DAC CODE
0
-5
-10
-15
-20
-50
500 1200 1900 2600 3300 4000
RF FREQUENCY (MHz)
OUTPUT MATCH vs. DAC CODE
0
3500MHz
-10
-20
2250MHz
-30
1500MHz
-40
950MHz
-50
0
256
512
768
1024
DAC CODE
S21 vs. DAC CODE
fRF = 950MHz
TC = -40°C, +25°C, +85°C
-25
-25
-30
0
256
512
768
1024
DAC CODE
-30
0
256
512
768
1024
DAC CODE
Maxim Integrated
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