UG-2201 datasheet(4/19 Pages) AD

4 / 19 page

User Guide

EVAL-ADF41510

EVALUATION BOARD HARDWARE

analog.com

Rev. 0 | 4 of 19

The EV-ADF41510SD1Z and EV-ADF41510SD2Z require the SDP-

S platform that uses the EVAL-SDP-CS1Z.

The evaluation board schematics, assembly, silkscreen, and bill of

materials are available in the Evaluation Board Schematics and

Artwork and Ordering Information sections, respectively.

POWER SUPPLIES

The board is powered by a 6 V (300 mA) power supply connected

to the red and black banana connectors. Connect the red connector

to a 6 V power supply and the black connector to ground. Connect

a 25 V (20 mA) power supply to either the V+SMA SMA connector

or the test point labeled V+. These connectors power the loop filter

op amp.

The power supply circuitry provides a network of 0 Ω resistors

to configure the power supply connections to the ADF41510.

Using fewer low-dropout (LDO) regulators increases the risk of

spur contaminated DC feeds, but provides a more cost-efficient

design. By default, three LDO regulators provide power. The

EV-ADF41510SD2Z includes a dedicated 5 V LDO powering the

HMC587 VCO.

SMA CONNECTIONS

The EV-ADF41510SD1Z evaluation board requires two VCO con-

nections labeled RFIN and VTUNE. Connect RFIN to the VCO RF

output and VTUNE to the VCO VTUNE input.

LOOP FILTER

The loop filter is shown in Figure 9 and EV-ADF41510SD1Z Board

in Evaluation Board Schematics and Artwork. Figure 3 shows the

loop filter component placement. For the best in-band phase noise

at 10 GHz, use the following components with a 3.3 mA charge

pump current and narrow anti-backlash pulse (ABP) setting. These

components are the default on the evaluation boards.

►

C1 = 470 pF, C2 = 10 nF, C3 = 220 pF, C4 = 470 pF

►

R1 = 68 Ω, R2 = 220 , R3 = 150 Ω

Narrower loop filter bandwidths have lower spurious signals.

Figure 3. Loop Filter Placement

REFERENCE SOURCE

The evaluation boards contain a 100 MHz single-ended output

XO from Crystek Corporation. When using an external reference,

remove R8 to disconnect the XO stub and remove R20 to power

down the XO. Connect the external reference to the SMA connector

labeled REFIN.

DEFAULT CONFIGURATION

All components necessary for local oscillator (LO) generation are

installed on the EV-ADF41510SD2Z board. This board is shipped

with the ADF41510 synthesizer, HMC587 VCO, 100 MHz reference

XO, and a 312 kHz loop filter (assuming charge pump current (ICP)

= 3.3 mA and RF VCO frequency (RFOUT) = 10 GHz).

On both the EV-ADF41510SD1Z and the EV-ADF41510SD2Z, RSET

= 2.7 kΩ

UG-2201 Datasheet(PDF) 4 Page - Analog Devices

UG-2201 Datasheet(HTML) 4 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Datasheet Download

Link URL