AD7249ANZ

更新时间： 2024-11-05 12:59:27

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	151K
描述
LC2MOS Dual 12-Bit Serial DACPORT

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AD7249ANZ 数据手册

LC²MOS

Dual 12-Bit Serial DACPORT

AD7249

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Two 12-Bit CMOS DAC Channels with

On-Chip Voltage Reference

Output Amplifiers

Three Selectable Output Ranges per Channel

–5 V to +5 V, 0 V to +5 V, 0 V to +10 V

Serial Interface

125 kHz DAC Update Rate

Small Size: 16-Lead DIP or SOIC

Low Power Dissipation

AD7249

OFSA

REFOUT

REFIN

OUTA

12-BIT

DAC A

OFSB

APPLICATIONS

Process Control

AGND

DGND

Industrial Automation

Digital Signal Processing Systems

Input/Output Ports

OUTB

12-BIT

DAC B

INPUT SHIFT REGISTER

GENERAL DESCRIPTION

The AD7249 DACPORT contains a pair of 12-bit, voltage-

output, digital-to-analog converters with output amplifiers and

Zener voltage reference on a monolithic CMOS chip. No exter-

nal trims are required to achieve full specified performance.

SCLK

SDIN

SYNC BIN/COMP CLR

LDAC

The AD7249 features a serial interface which allows easy con-

nection to both microcomputers and 16-bit digital signal proces-

sors with serial ports. The serial data may be applied at rates up

to 2 MHz allowing a DAC update rate of 125 kHz.

The output amplifiers are capable of developing +10 V across a

2 kΩ load. The output voltage ranges with single supply opera-

tion are 0 V to +5 V or 0 V to +10 V, while an additional bipolar

5 V output range is available with dual supplies. The ranges

are selected using the internal gain resistor.

The AD7249 is fabricated on linear compatible CMOS

(LC²MOS), an advanced, mixed technology process. It is pack-

aged in 16-lead DIP and 16-lead SOIC packages.

Interfacing to the AD7249 is serial, minimizing pin count and

allowing a small package size. Standard control signals allow

interfacing to most DSP processors and microcontrollers. The

data stream consists of 16 bits, DB15 to DB13 are don’t care

bits, the 13th bit (DB12) is used as the channel select bit and

the remaining 12 bits (DB11 to DB0) contain the data to update

the DAC. The 16-bit data word is clocked into the input register

on each falling SCLK edge.

PRODUCT HIGHLIGHTS

1. Two complete 12-bit DACPORTs

The AD7249 contains two complete voltage output, 12-bit

DACs in both 16-lead DIP and SOIC packages.

2. Single or dual supply operation

3. Minimum 3-wire interface to most DSP processors

4. DAC update rate—125 kHz

The data format is natural binary in both unipolar ranges, while

either offset binary or twos complement format may be selected

in the bipolar range. A CLR function is provided which sets the

output to 0 V in both unipolar ranges and in the twos comple-

ment bipolar range, while with offset binary data format, the

output is set to –REFIN. This function is useful as a power-on

reset as it allows the outputs to be set to a known voltage level.

DACPORT is a registered trademark of Analog Devices, Inc.

REV. C

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

World Wide Web Site: http://www.analog.com

12 3 4 5 6 7...12

中文翻译

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AD7249ANZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7249AN	ADI	类似代替	LC2MOS Dual 12-Bit Serial DACPORT
MAX532BEPE+	MAXIM	功能相似	暂无描述
AD7249SQ	ADI	功能相似	LC2MOS Dual 12-Bit Serial DACPORT

与AD7249ANZ相关器件

型号	品牌	获取价格	描述	数据表
AD7249AR	ADI	获取价格	LC2MOS Dual 12-Bit Serial DACPORT
AD7249AR-REEL	ETC	获取价格	12-Bit Digital-to-Analog Converter
AD7249ARZ	ADI	获取价格	LC2MOS Dual 12-Bit Serial DACPORT
AD7249ARZ-REEL	ADI	获取价格	LC2MOS Dual 12-Bit Serial DACPORT
AD7249BN	ADI	获取价格	LC2MOS Dual 12-Bit Serial DACPORT
AD7249BNZ	ADI	获取价格	LC2MOS Dual 12-Bit Serial DACPORT
AD7249BR	ADI	获取价格	LC2MOS Dual 12-Bit Serial DACPORT
AD7249BR-REEL	ETC	获取价格	12-Bit Digital-to-Analog Converter
AD7249BR-TR	ADI	获取价格	DUAL, SERIAL INPUT LOADING, 5us SETTLING TIME, 12-BIT DAC, PDSO16
AD7249BRZ	ADI	获取价格	LC2MOS Dual 12-Bit Serial DACPORT

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