AD9833BRMZ原理图各脚功能电路原理芯片引脚定义引脚图及功能-中国IC网-芯三七

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产品型号AD9833BRMZ的概述

AD9833BRMZ概述 AD9833BRMZ是一款由Analog Devices公司推出的高性能数字频率合成器。该芯片广泛应用于信号发生器、音频生成、无线通信等领域，其核心功能是将数字信号转换为模拟信号，进而产生具有一定频率和相位的波形。AD9833BRMZ主要使用数字方法实现频率合成，能够产生正弦波、方波和三角波等多种波形，且其输出频率可在很宽的范围内调整。芯片的详细参数 AD9833BRMZ的主要参数包括： - 频率范围：可以产生0 Hz到12.5 MHz的正弦波。 - 分辨率：寄存器的位数为28位，提供高精度的频率控制。 - 时钟频率：芯片内部时钟可以在75 MHz的最大频率下工作。 - 输出波形：支持正弦波、方波和三角波输出。 - 电源电压：工作电压范围为2.3 V到5.5 V，适应多种电源环境。 - 功耗：功耗较低，通常在数十毫瓦之内，适合用于便携式设备。 - 总谐波失真...

产品型号AD9833BRMZ的Datasheet PDF文件预览

Evaluation Board User Guide

UG-272

One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com

Evaluating the AD9833 Low Power 12.65 mW, 2.3 V to 5.5 V, Programmable

Waveform Generator

FEATURES

GENERAL DESCRIPTION

Full featured evaluation board for the AD9833 evaluation

board

Graphical user interface software for board control and data

analysis

Connector to EVAL-SDP-CB1Z system demonstration

platform (SDP) board

Various power supply and reference link options

The AD9833 is a 25 MHz low power DDS device capable of

producing high performance sine and triangular outputs. It

also has an on-board comparator that allows a square wave to

be produced for clock generation. Consuming only 13 mW of

power at 3 V makes the AD9833 an ideal candidate for power-

sensitive applications.

The EVAL-AD9833SDZ board is used in conjunction with an

EVAL-SDP-CB1Z SDP board available from Analog Devices, Inc.

The USB-to-SPI communication to the AD9837 is completed

using this Blackfin®-based development board.

APPLICATIONS

Biomedical sensors

Bioelectrical impedance analysis

Electrochemical analysis

Impedance spectroscopy

Complex impedance measurement

Nondestructive testing

A high performance, on-board 25 MHz trimmed general

oscillator is available to use as the master clock for the AD9837

system. Various links and SMB connectors are also available on

the EVAL-AD9833SDZ board to maximize usability.

Complete specifications for the AD9833 are provided in the

AD9833 data sheet, available from Analog Devices, and should

be consulted in conjunction with this user guide when using the

evaluation board.

FUNCTIONAL BLOCK DIAGRAM

EVAL-SDP-CB1Z

MCLK XO

REF196

MCLK

VOUT

AD9833

FSYNC SCLK SDATA

USB

SPORT

Figure 1.

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS.

Rev. A | Page 1 of 12

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Evaluation Board User Guide

TABLE OF CONTENTS

Features .............................................................................................. 1

Select External MCLK Frequency...............................................6

Loading Frequency and Phase Registers....................................6

FSK and PSK Functionality..........................................................6

Waveform Options........................................................................6

Reset and Sweep ............................................................................7

Example of Operation...................................................................7

Evaluation Board Schematics and Layout......................................8

Ordering Information.................................................................... 10

Bill of Materials........................................................................... 10

Applications....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Evaluation Board Software.............................................................. 3

Installing the Software ................................................................. 3

Running the Software .................................................................. 4

Using the Evaluation Board Software ............................................ 5

Setting Up the Digital Interface.................................................. 5

REVISION HISTORY

8/12—Rev. 0 to Rev. A

Change to Table 1 ............................................................................. 4

4/11—Revision 0: Initial Version

Rev. A | Page 2 of 12

Evaluation Board User Guide

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EVALUATION BOARD SOFTWARE

both 32- and 64-bit systems. However, if the drivers do not

download automatically, the driver executable file can also

be found in the Program Files/Analog Devices folder.

Follow the on-screen prompts to install the SDPDriverNet

Version 1.3.6.0.

INSTALLING THE SOFTWARE

The EVAL-AD9833SDZ evaluation kit includes the software and

drivers on CD. The software is compatible with Windows® XP,

Windows Vista, and Windows 7.

To install the software, follow these steps:

4. After installation of the software and drivers is complete, plug

the EVAL-AD9833SDZ into the SDP board and the SDP

board into the PC using the USB cable included in the box.

5. When the software detects the evaluation board, proceed

through any dialog boxes that appear to finalize the

installation (Found New Hardware Wizard/Install the

Software Automatically and so on).

1. Install the software before connecting the SDP board to the

USB port of the PC.

2. Start the Windows operating system and insert the

EVAL-AD9833SDZ evaluation kit CD.

3. Download the AD9833SDZ LabVIEW® software. The correct

driver, SDPDriversNET, for the SDP board should download

automatically after LabVIEW is downloaded, supporting

Figure 2. Hardware Device Manager Window with SDP Board Plugged In

Rev. A | Page 3 of 12

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Evaluation Board User Guide

Table 1. Default Setup for Link Positions

Link No. Position Function

RUNNING THE SOFTWARE

To run the evaluation board program, do the following:

LK1

LK2

LK4

Out

Decouple the CAP/2.5V pin to ground

because V_DDis >2.7 V.

On-board linear regulator selected to

supply power to the general oscillator.

3.3 V digital supply for the AD9833 supplied

from the EVAL-SDP-CB1Z SDP board.

1. Click Start/All Programs/Analog Devices/AD9833/

AD9833 Eval Board.

2. If the SDP board is not connected to the USB port when

the software is launched, a connectivity error displays (see

Figure 3). Simply connect the evaluation board to the USB

port of the PC, wait a few seconds, click Rescan, and follow

the instructions.

3. Ensure that all links are in their correct locations (see Table 1).

The main window of the AD9833DBZ evaluation software

then opens, as shown in Figure 4.

Figure 3. Pop-Up Window Error

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USING THE EVALUATION BOARD SOFTWARE

Figure 4. AD9833 DDS Evaluation Software

SETTING UP THE DIGITAL INTERFACE

The first software step in setting up the AD9833 to make some

measurements is to set the DIGITAL INTERFACE value. The

EVAL-SDP-CB1Z has two connectors plugs: connectorA and

connectorB. Select the connector you want to use with the

AD9837 evaluation board from the drop-down box.

The SPI Frame Frequency (/SYNC) box and SCLK Frequency

box can also be set in this window. If the SPI interface speed has

not been decided, leave the default values shown in Figure 5.

Figure 5. Digital Interface

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Evaluation Board User Guide

SELECT EXTERNAL MCLK FREQUENCY

FSK AND PSK FUNCTIONALITY

Having selected the digital interface specifics, next use the

EXTERNAL MCLK box to choose which frequency to use. The

boards are supplied with a 25 MHz general oscillator. If a different

clock source is required, the CLK1 SMB connector can be used

to supply a different MCLK value.

In software mode, the AD9833 can be set up for FSK or PSK

functionality by simply entering the bit rate in milliseconds and

selecting the push-button option (see Figure 8).

Two options for the general oscillator include the AEL3013

oscillators from AEL Crystals and the SG-310SCN oscillators

from Epson Electronics.

Figure 8. FSK and PSK Functionality

WAVEFORM OPTIONS

The output waveform can be selected as a sinusoidal waveform

or a ramp waveform. The internal comparator in the AD9833

can be disabled or enabled (see Figure 9). The MSB or the

MSB/2 of the phase accumulator can be selected as the output

on the SIGN BIT OUT pin.

Figure 6. EXTERNAL MCLK Input

LOADING FREQUENCY AND PHASE REGISTERS

The desired output frequency and output phase can be loaded

using the inputs shown in Figure 7. Either the FREQ 0 register or

the FREQ 1 register can be loaded with frequency data. The

frequency data is loaded in megahertz, and the equivalent hex code

is shown to the right once data is entered; click Enter to load

data. Once data is loaded, the output appears on the IOUT1 and

IOUT2 pins. Similarly, either the PHASE 0 register or PHASE 1

Figure 9. Waveform Profile and SIGN BIT OUT Pin

Power-Down Options

The AD9833 has various power-down options selected through

the control register. The part can disable the MCLK or disable

the DAC if just the MSB output is used on the SIGN BIT OUT

pin, or it can power down both sections for a lower power sleep

mode (see Figure 10).

The analog output frequency from the AD9833 is defined by

_MCLK/2²⁸× FREQREG

where FREQREG is the value loaded into the selected frequency

2π/4096 × PHASEREG

where PHASEREG is the value contained in the selected phase

Figure 10. Power-Down Options

Figure 7. Frequency and Phase Load

Rev. A | Page 6 of 12

Evaluation Board User Guide

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RESET AND SWEEP

EXAMPLE OF OPERATION

The reset software command is set using the button shown in

An example of configuring the AD9833 to output 10 kHz follows:

Figure 11. To set up a DDS sweep, click Sweep.

1. Plug the EVAL-SDP-CB1Z board into the EVAL-

AD9833SDZ board and connect to the USB port.

2. Start up the software located at Start/All Programs/

Analog Devices/AD9833/AD9833 Eval Board. You should

see the SDP board communicating with the PC.

3. Select connectorA or connectorB; this must match what

the AD9837 test chip is connected to.

Figure 11. Software Reset and Sweep Select

The sweep function allows users to load a start frequency, stop

frequency, increment size, number of loops, and delay between

each frequency increment. These commands are then loaded to

the part automatically from the EVAL-SDP-CB1Z board.

4. Define MCLK; the default is an on-board 25 MHz

oscillator.

5. Ensure that all links are in the correct locations (see Table 1).

6. Select the FREQ 1 register.

7. Load a 10 kHz excitation frequency and click Enter.

The output should appear on the IOUT and IOUTB outputs on

the evaluation board.

For the FREQ 0 register,

•

Select the FREQ 0 register.

Load the FREQ 0 register with 20 kHz and click Enter.

For the FREQ 1 register,

•

Select the FREQ 1 register to load the 10 kHz associated

with this register.

Figure 12. Sweep Functionality

CH1 FREQ

10kHz

CH1 p-p

596mV

CH1 100mV

M20µs

A CH1

182mV

Figure 13. 10 kHz Output Signals on an IOUT Test Point

Rev. A | Page 7 of 12

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Evaluation Board User Guide

EVALUATION BOARD SCHEMATICS AND LAYOUT

Figure 14. AD9833 Schematic Part A

Rev. A | Page 8 of 12

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Figure 15. AD9833 Schematic Part B

Figure 16. Evaluation Board Layout

Rev. A | Page 9 of 12

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Evaluation Board User Guide

ORDERING INFORMATION

BILL OF MATERIALS

Table 2.

Reference Designator

C1, C2, C4 to C7, C8

Description

Manufacturer

Murata

Part Number

0.1 µF, 50 V, X7R ceramic capacitor

GRM188R71H104KA93D

C0603C103K5RACTU

TAJA106K010R

0.01 µF ceramic capacitor, 0603, 10 V, X5R, 10%

10 µF SMD tantalum capacitor, 10 V, 10%, RTAJ_A

1 µF ceramic capacitor, 10 V, 10%, Y5V, 0603

0.1 µF capacitor, 0603, 16 V, X7R, 10%

10 µF ceramic capacitor, 10 V, 10%, X5R, 0805

Straight PCB mount SMB jack, 50 Ω

Kemet

C9, C10, C11

C16

AVX

Murata

CC0603ZRY5V6BB105

B0603R104KCT

C17, C19

Multicomp

Murata

C18

GRM21BR61A106KE19L

1-1337482-0

CLK1, VOUT1

Tyco

FSYNC, SCLK, SDATA, VOUT, VOUT2 Red test point

Vero

20-313137

120-way connector, 0.6 mm pitch, receptacle

HRS (Hirose)

Campden

Harwin

FX8-120S-SV(21)

CTB5000/2

J3, J4

LK1

2-pin terminal block (5 mm pitch)

Jumper block, 2-pin 0.1" spacing

3-pin SIL header and shorting link

50 Ω SMD resistor, 0603

M20-9990246

LK2, LK4

Harwin

M20-9990345 and M7567-05

MC 0.063W 0603 50R

MC 0.063W 0603 0R

24LC64-I/MS

Multicomp

Microchip

R5, R6

0 Ω SMD resistor, 0603

64K I²C serial EEPROM MSOP-8

Precision micropower, low dropout, low voltage

references, 8-lead TSSOP

Analog Devices REF196GRUZ

Low power 12.65 mW, 2.3 V to 5.5 V, programmable

waveform generator, 10-lead MSOP

Analog Devices AD9833BRMZ

XTAL1

25 MHz

AEL Crystals

XTAL-AEL-301-SERIES

Rev. A | Page 10 of 12

Evaluation Board User Guide

NOTES

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Rev. A | Page 11 of 12

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NOTES

Evaluation Board User Guide

ESD Caution

ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection

circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.

Legal Terms and Conditions

By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions

set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you

have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.

(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,

temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided

for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional

limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term

“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including

ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may

not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to

promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any

occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.

Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice

to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO

WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED

TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL

PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF

THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE

AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable

United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of

Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby

submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.

registered trademarks are the property of their respective owners.

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