Evaluation Board for

AD9956/PCB

Rev. 0

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EVALUATION BOARD FUNCTIONAL BLOCK DIAGRAM

÷M

DDS

÷R

VCO

÷N

LPF

AD9956

LPF

VCO AND LOOP FILTER ONLY POPULATED ON

AD9956-VCO/PCB. THESE SOCKETS LEFT VACANT

FOR USER TO POPULATE ON AD9956/PCB

J16

J6

J7

J1

REFCLK

RF

DIVIDER

SYSCLK

DAC IOUT

DAC IOUT

DRV_OUT

DRV_OUT

SYSCLK

REFCLK

PLL_OSC

CML DRIVER

PHASE FREQUENCY DETECTOR/

CHARGE PUMP

PLL_REF

PLL_OSC

CP_OUT

J2

J3

50

Ω

J4

J5

Figure 1.

DESCRIPTION

This data sheet describes the AD9956/PCB evaluation board

hardware and software. The current version of software

provides a graphical user interface (GUI) that allows easy

communication with the many on-chip functions of the device.

The AD9956 is a highly sophisticated AgileRF synthesizer with

numerous user-programmable functions. See the AD9956 data

sheet for detailed information about the part.