UG-161
EV-ADF411XSD1Z User Guide
Rev. A | Page 4 of 28
EVALUATION BOARD HARDWARE
The evaluation board requires the use of an
SDP-S
motherboard to
program the device. The
SDP-S
is not included with the evaluation
board. The EV-ADF411XSD1Z schematics are shown in Figure 37,
Figure 38, and Figure 39.
POWER SUPPLIES
The board is powered from external banana connectors. The
voltage can vary between 6 V and 12 V. The power supply circuit
provides 3.0 V to the V
DD
of the frequency synthesizer and allows
the user to choose either 3.0 V or 5 V for the V
P
of the frequency
synthesizer. The default settings for V
DD
and V
P
are 3.0 V and
5 V, respectively. Note that V
DD
should never exceed 3.3 V because
exceeding this voltage level may damage the device.
External power supplies can be used to directly drive the
frequency synthesizer. In this case, the user must insert SMA
connectors as shown in Figure 2.
INPUT SIGNALS
A 10 MHz TCXO reference source from Fox Electronics is fitted as
the default option. An external reference generator can also be used
as the reference input. A low noise, high slew rate reference source
is required to achieve the specified performance of the frequency
synthesizer. An SMA connector fitted to J11 can be connected to an
external reference generator and used as the reference source. If
preferable, the edge mount connector, J5, can be inserted and used
instead of J11. To use any external reference option, remove the 0 Ω
R16 and R14 links.
Digital SPI signals are supplied through the SDP connector, J1.
The
SDP-S
board is recommended. The SDP-Blackfin (
SDP-B
)
board can also be used, but Resistor R57 must be removed from
the
SDP-B
board. Some additional spurious low frequencies
may appear if the
SDP-B
connector is used.
Figure 2. Evaluation Board Silkscreen
OUTPUT SIGNALS
The PLL comprises the frequency synthesizer, a passive loop
filter, and the VCO. The VCO output is available at RFOUT
through a standard SMA connector, J2. The MUXOUT signal
can be monitored at Test Point T8 or at SMA Connector J3.
09146-
002
Содержание EV-ADF411XSD1Z
Страница 20: ...UG 161 EV ADF411XSD1Z User Guide Rev A Page 20 of 28 Figure 38 Evaluation Board Schematic Page 2 09146 022...
Страница 21: ...EV ADF411XSD1Z User Guide UG 161 Rev A Page 21 of 28 Figure 39 Evaluation Board Schematic Page 3 09146 023...
Страница 22: ...UG 161 EV ADF411XSD1Z User Guide Rev A Page 22 of 28 Figure 40 Layer 1 Component Side 09146 024...
Страница 23: ...EV ADF411XSD1Z User Guide UG 161 Rev A Page 23 of 28 Figure 41 Layer 2 Ground Plane 09146 025...
Страница 24: ...UG 161 EV ADF411XSD1Z User Guide Rev A Page 24 of 28 Figure 42 Layer 3 Power Plane 09146 026...
Страница 25: ...EV ADF411XSD1Z User Guide UG 161 Rev A Page 25 of 28 Figure 43 Layer 4 Solder Side 09146 027...
