MODIFYING THE EVALUATION BOARD TO
USE THE ADL5370 ON-BOARD QUADRATURE
MODULATOR
The evaluation board contains an Analog Devices, Inc.,
ADL5370 quadrature modulator. The AD9114/AD9115/
AD9116/AD9117 and the ADL5370 provide an easy-to-
interface DAC/modulator combination that can be easily
characterized on the evaluation board. Solderable jumpers
can be configured to evaluate the single-ended or differential
outputs of the AD9114/ AD9115/AD9116/AD9117. This is
the default configuration from the factory and consists of
the following population of the components:
• JP55, JP56, JP76, JP82—unsoldered
• R13, R14, R52, R53—unpopulated
• R50, R57, T1, T2—populated
AD9114/AD9115/AD9116/AD9117
To evaluate the ADL5370 on this board, the population of these
same components should be reversed so that they are in the
following positions:
• JP55, JP56, JP76, JP82—soldered
• R13, R14, R52, R53—populated
• R50, R57, T1, T2—unpopulated
The AUXDAC outputs can be connected to Test Point TP44 and
Test Point TP45 if LO feedthrough compensation is necessary.
Rev. 0 | Page 47 of 48