AD9953_17 datasheet(1/32 Pages) AD

Il numero della parte	AD9953

Spiegazioni elettronici	400MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer

PDF	32 Pages

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Produttore elettronici	AD [Analog Devices]

Homepage	http://www.analog.com

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1 / 32 page

400 MSPS, 14-Bit, 1.8 V CMOS

Direct Digital Synthesizer

Data Sheet

AD9953

Rev. B

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rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Technical Support

www.analog.com

FEATURES

400 MSPS internal clock speed

Integrated 14-bit DAC

32-bit tuning word

Phase noise ≤ –120 dBc/Hz at 1 kHz offset (DAC output)

Excellent dynamic performance

>80 dB SFDR at 160 MHz (±100 kHz offset) AOUT

Serial input/output (I/O) control

1.8 V power supply

Software and hardware controlled power-down

48-lead TQFP/EP package

PLL REFCLK multiplier (4× to 20×)

Internal oscillator, can be driven by a single crystal

Phase modulation capability

Multichip synchronization

APPLICATIONS

Agile VHF/UHF LO frequency synthesis

FM chirp source for radar and scanning systems

Nonlinear-shaped PSK/FSK modulator

Test and measurement equipment

FUNCTIONAL BLOCK DIAGRAM

1024

 32

STATIC RAM

COS(X)

CONTROL REGISTERS

OSCILLATOR/BUFFER

SYNC

ENABLE

I/O UPDATE

DAC_RSET

DDS CORE

PHASE

OFFSET

PHASE

ACCUMULATOR

Z–1

IOUT

OSK

PWRDWNCTL

REFCLK

CRYSTAL OUT

I/O PORT

PS<1:0>

RAM DATA <31:18>

RAM

DATA

DAC

MUX

SYSTEM

CLOCK

SYSTEM

CLOCK

SYNC_IN

PHASE

OFFSET

WORD

SYNC_CLK

RESET

TIMING AND CONTROL LOGIC

4

–20

CLOCK

MULTIPLIER

÷ 4

AD9953

32

14

32

10

3

19

14

0

32

M

U

X

M

U

X

M

U

X

Figure 1.

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