Datasheet > EVAL-AD9834EB

EVAL-AD9834EB

更新时间： 2024-11-23 22:49:07

品牌	Logo	应用领域
亚德诺 - ADI		数据分配系统
页数	文件大小	规格书
20页	232K
描述
Low Power, +2.3 V to +5.5 V, 50 MHz Complete DDS

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数据手册

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EVAL-AD9834EB 数据手册

PRELIMINARY TECHNICAL DATA

Low Power, +2.3 V to +5.5 V, 50 MHz

PreliminaryTechnicalData

CompleteDDS

AD9834

Capability for phase modulation and frequency modula-

tion is provided. Frequency accuracy can be controlled to

one part in 0.25 billion. Modulation is effected by loading

registers through the serial interface.

FEATURES

+2.3 V to +5.5 V Power Supply

50 MHz Speed

Low Jitter Clock Output

Sine Output/Triangular Output

Serial Loading

Power-Down Option

Narrowband SFDR > 72 dB

20 mW Power Consumption at 3 V

20-Pin TSSOP

The AD9834 offers the user a variety of output

waveforms. The SIN ROM can be bypassed so that a

linear up/down ramp is output from the DAC. If the SIN

ROM is not by-passed, a sinusoidal output is available.

Also, if a clock output is required, the MSB of the DAC

data can be output, or the on-chip comparator can be

used.

APPLICATIONS

Test Equipment

Slow Sweep Generator

DDS Tuning

The digital section is driven by an on-board regulator

which steps down the applied DVDD to +2.5 V when

DVDD exceeds +2.5 V. The analog and digital sections

are independent and can be run from different power

supplies e.g. AVDD can equals 5 V with DVDD equal to

3 V, etc.

Digital Modulation

GENERAL DESCRIPTION

The AD9834 is a numerically controlled oscillator

employing a phase accumulator, a SIN ROM and a

10-bit D/A converter integrated on a single CMOS

chip. Clock rates up to 50 MHz are supported with a

power supply from 2.3 V to 5.5 V.

The AD9834 has a power-down pin (SLEEP) which

allows external control of a power-down mode. Sections of

the device which are not being used can be powered down to

minimise the current consumption e.g. the DAC can be

powered down when a clock output is being generated.

The part is available in a 20-pin TSSOP package.

FUNCTIONAL BLOCK DIAGRAM

AVDD AGND

DGND

DVDD

CAP/2.5V

REFOUT

FS ADJUST

On-Board

Reference

MCLK

Regulator

FullScale

Control

COMP

VCC

2.5V

FSELECT

28 Bit

FREQ0 REG

IOUT

Phase

Accumulator

(28 Bit)

10-Bit

DAC

SIN

ROM

MUX

IOUTB

28 Bit

FREQ1 REG

MSB

MUX

DIV BY

12 Bit PHASE0 REG

MUX

12 Bit PHASE1 REG

MUX

SIGN BIT OUT

VIN

16 Bit Control

COMPARATOR

Serial Interface

Control Logic

AD9834

FSYNC SCLK

SDATA

PSELECT

SLEEP

RESET

REV PrM 04/02

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 781/329-4700

Fax: 781/326-8703

www.analog.com

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与EVAL-AD9834EB相关器件

型号	品牌	获取价格	描述	数据表
EVAL-AD9834SDZ	ADI	获取价格	20 mW Power, 2.3 V to 5.5 V, 75 MHz Complete DDS
EVAL-AD9835SDZ	ADI	获取价格	50 MHz Direct Digital Synthesizer, Waveform Generator
EVAL-AD9837SDZ	ADI	获取价格	Low Power, 8.5 mW, 2.3 V to 5.5 V, Programmable Waveform Generator
EVAL-AD9838SDZ	ADI	获取价格	11 mW Power, 2.3 V to 5.5 V, Complete DDS Power-down option
EVAL-ADA4625-1ARDZ	ADI	获取价格	36V 18MHz Low Noise, Fast Settling Single Supply, RRO, JFET Op Amp
EVAL-ADA4625-2ARDZ	ADI	获取价格	36V 18MHz Low Noise, Fast Settling Single Supply, RRO, JFET Op Amp
EVAL-ADAS3022EDZ	ADI	获取价格	16-Bit, 1 MSPS, 8-Channel Data Acquisition System
EVAL-ADAS3023EDZ	ADI	获取价格	16-Bit, 8-Channel Simultaneous Sampling Data Acquisition System
EVAL-ADAU1373Z	ADI	获取价格	Low Power Codec with Speaker and Headphone Amplifier
EVAL-ADAU1381Z	ADI	获取价格	Low Noise Stereo Codec with Enhanced Recording and Playback Processing

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