adl5373 Analog Devices, Inc., adl5373 Datasheet - Page 19
![no-image](/images/no-image-200.jpg)
adl5373
Manufacturer Part Number
adl5373
Description
2300 Mhz To 3000 Mhz Quadrature Modulator
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADL5373.pdf
(20 pages)
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The setup used to evaluate baseband frequency sweep and
undesired sideband nulling of the ADL5373 is shown in Figure 40.
The interface board has circuitry that converts the single-ended
I input and Q input from the arbitrary function generator to
differential I and Q baseband signals with a dc bias of 500 mV.
ARBITRARY FUNCTION GENERATOR
0.500
VPOS +5V
5.000
CH1
CH2
0.200 ADC
AGILENT 34401A
AGILENT E3631A
POWER SUPPLY
MULTIMETER
AGILENT E3631A
+
POWER SUPPLY
+
6V
VCM = 0.5V
TEKTRONIX AFG3252
1MHz
AMPL 700mV p-p
PHASE 0°
1MHz
AMPL 700mV p-p
PHASE 90°
6V
VPOS +5V
–
DUAL FUNCTION
–
0.010A
0.350A
Figure 40. Setup for Baseband Frequency Sweep and Undesired Sideband Nulling
+
+
0°
COM
±25V
+5V
COM
±25V
–
–
–5V
I Q
F-MOD TEST RACK
SINGLE-TO-DIFFERENTIAL
Q IN DCCM
AGND
I IN DCCM
90°
CIRCUIT BOARD
I IN AC
VPOSB VPOSA
TSEN
VN1
Rev. 0 | Page 19 of 20
IN1
Q IN AC
GND
VP1
IN1
FREQ 4MHz TO 4GHz
QN
QP
LEVEL 0dBm
IN
IP
Undesired sideband nulling was achieved through an iterative
process of adjusting amplitude and phase on the Q-channel. See
the Sideband Suppression Optimization section for detailed
information on sideband nulling.
SIGNAL GENERATOR
R AND S SMT 06
IP
IN
QP
QN
VPOS
CHAR BD
F-MOD
SPECTRUM ANALYZER
R AND S FSEA 30
100MHz TO 4GHz
OUT
GND
LO
+6dBm
OUT
RF
IN
RF
OUTPUT
LO
ADL5373