Evaluation Board Hardware; Overview; Power Supplies; Local Oscillator - Analog Devices EV-ADF4159EB1Z User Manual

Evaluation Board User Guide

EVALUATION BOARD HARDWARE

OVERVIEW

The evaluation board kit includes a cable for connecting the
evaluation board to the USB port of a PC. The silkscreen for the
evaluation board is show in Figure 2, and the schematics for the
evaluation board are shown in Figure 10 to Figure 13.

POWER SUPPLIES

The evaluation board is powered by a 5.5 V power supply con-
nected to the red and black banana connectors. Connect the
red connector to a 5.5 V power supply and the black connector
to ground.
The op amp is powered by a 15 V power supply.
Optionally, the VCO can be powered independently by connecting
a 5 V supply to the VVCO SMA and removing R27. When this
option is used, reduce the voltage on the banana connectors to 5 V.
The USB section of the evaluation board (see the area bounded
by the gold box in Figure 1) is powered by the USB host.

LOCAL OSCILLATOR

The 100 MHz TXCO provides the reference frequency. To
ensure that the PFD frequency is also 100 MHz, set the on-chip
R-divider to 1.
Alternatively, an external reference can be used by connecting
the reference to the REFIN SMA and removing R10 and L1.

VCO

The VCO configuration is different for each evaluation board
model: EV-ADF4159EB1Z and EV-ADF4159EB3Z. See the
VCO Configuration section for more information.

OUTPUT SIGNALS

With a VCO connected, the evaluation board outputs the VCO
output on the EXT_VCOOUT SMA and the VCO output is
divided by 2 on the VCO/2 SMA.
Figure 2. Evaluation Board Silkscreen
Rev. A | Page 3 of 16
UG-383