ADL5723 Data Sheet
Rev. 0 | Page 10 of 12
EVALUATION BOARD
The ADL5723-EVALZ comes with an ADL5723 chip. It supports
a single 5 V supply for ease of use. For 5 V operation, use the
3.3 V and 1.8 V test loops for evaluation purposes only. When
using a 3.3 V or 1.8 V supply, remove the R1 and R2 resistors
from the evaluation board. Figure 19 shows the ADL5723-
EVALZ evaluation board lab bench setup.
INITIAL SETUP
To set up the ADL5723-EVALZ, take the following steps:
1. Power up the ADL5723-EVALZ with a 5 V dc supply. The
supply current of the evaluation board is approximately
111 mA, which is a combination of the VCC1 (1.8 V) and
the VCC2 (3.3 V) currents.
2. Connect the signal generator to the input of the ADL5723-
EVALZ.
3. Connect RFOP and RFON to a 180° hybrid that works
within the 10.1 GHz to 11.7 GHz frequency range.
4. Connect the difference output of the hybrid to the
spectrum analyzer. The sum port of the hybrid must be
terminated to 50 Ω.
See Figure 19 for the ADL5723-EVALZ lab bench setup.
RESULTS
Figure 18 shows the expected results when testing the
ADL5723-EVALZ using the Rev. A version of the evaluation
board and its software. Note that future iterations of the software
may produce different results. See the ADL5723 product page
for the most recent software version.
Figure 18 shows the results of the differential output for an input
of 10.1 GHz at −15 dBm. The hybrid and board loss have not
been deembedded.
POWER OUTPUT (dBm)
20
10
0
–10
–20
–30
–40
–50
–60
–70
–80
1
14316-013
10.95 10.9710.96 10.98 10.99 10.11 10.1310.10 10.12 10.14 10.15
FREQUENCY (GHz)
RESOLUTION BANDWIDTH = 20kHz
VIDEO BANDWIDTH = 20kHz
SWEEP = 301ms (1001pts)
Figure 18. Test Results at 10.1 GHz
+5V DC GND
INPUT
RF FREQUENCY GENERATOR
RFON
14316-014
RFOP
180° HYBRID FOR DIFFERENTIAL
TO SINGLE ENDED OUTPUT
SPECTRUM
ANALYZER
Figure 19. ADL5723-EVALZ Lab Bench Setup
