AD7245AAQ

更新时间： 2024-11-01 22:47:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	308K
描述
LC2MOS 12-Bit DACPORTs

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AD7245AAQ 数据手册

LC MOS

12-Bit DACPORTs

AD7245A/AD7248A

FEATURES

AD 7245A FUNCTIO NAL BLO CK D IAGRAM

12-Bit CMOS DAC w ith Output Am plifier and

Reference

Im proved AD7245/ AD7248:

12 V to 15 V Operation

؎1/ 2 LSB Linearity Grade

Faster Interface–30 ns typ Data Setup Tim e

Extended Plastic Tem perature Range (–40؇C to +85؇C)

Single or Dual Supply Operation

Low Pow er–65 m W typ in Single Supply

Parallel Loading Structure: AD7245A

(8+4) Loading Structure: AD7248A

GENERAL D ESCRIP TIO N

T he AD7245A/AD7248A is an enhanced version of the industry

standard AD7245/AD7248. Improvements include operation

from 12 V to 15 V supplies, a ±1/2 LSB linearity grade, faster

interface times and better full scale and reference variations with

AD 7248A FUNCTIO NAL BLO CK D IAGRAM

V_DD. Additional features include extended temperature range

operation for commercial and industrial grades.

T he AD7245A/AD7248A is a complete, 12-bit, voltage output,

digital-to-analog converter with output amplifier and Zener volt-

age reference on a monolithic CMOS chip. No external user

trims are required to achieve full specified performance.

Both parts are microprocessor compatible, with high speed data

latches and double-buffered interface logic. T he AD7245A ac-

cepts 12-bit parallel data which is loaded into the input latch on

the rising edge of CS or WR. T he AD7248A has an 8-bit wide

data bus with data loaded to the input latch in two write opera-

tions. For both parts, an asynchronous LDAC signal transfers

data from the input latch to the DAC latch and updates the ana-

log output. T he AD7245A also has a CLR signal on the DAC latch

which allows features such as power-on reset to be implemented.

T he on-chip 5 V buried Zener diode provides a low noise, tem-

perature compensated reference for the DAC. For single supply

operation, two output ranges of 0 V to +5 V and 0 V to +10 V

are available, while these two ranges plus an additional ±5 V

range are available with dual supplies. T he output amplifiers are

capable of developing +10 V across a 2 kΩ load to GND.

SOIC and in 28-terminal surface mount packages. T he

AD7248A is packaged in a small, 0.3" wide, 20-pin DIP and

SOIC and in 20-terminal surface mount packages.

P RO D UCT H IGH LIGH TS

1. T he AD7245A/AD7248A is a 12-bit DACPORT^®on a single

chip. T his single chip design and small package size offer

considerable space saving and increased reliability over

multichip designs.

T he AD7245A/AD7248A is fabricated in linear compatible

CMOS (LC²MOS), an advanced, mixed technology process that

combines precision bipolar circuits with low power CMOS logic.

T he AD7245A is available in a small, 0.3" wide, 24-pin DIP and

2. T he improved interface times on the part allows easy, direct

interfacing to most modern microprocessors.

3. T he AD7245A/AD7248A features a wide power supply range

allowing operation from 12 V supplies.

D ACP O RT is a r egister ed tr adem ar k of Analog D evices, Inc.

REV. A

Inform ation furnished by Analog Devices is believed to be accurate and

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

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

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 617/ 329-4700

Fax: 617/ 326-8703

12 3 4 5 6 7...16

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与AD7245AAQ相关器件

型号	品牌	获取价格	描述	数据表
AD7245AAR	ADI	获取价格	LC2MOS 12-Bit DACPORTs
AD7245AARZ	ADI	获取价格	LC2MOS 12-Bit DACPORTs
AD7245AARZ-REEL	ADI	获取价格	AD7245AARZ-REEL
AD7245ABN	ADI	获取价格	LC2MOS 12-Bit DACPORTs
AD7245ABNZ	ADI	获取价格	AD7245ABNZ
AD7245ABR	ADI	获取价格	LC2MOS 12-Bit DACPORTs
AD7245ABR-REEL	ROCHESTER	获取价格	PARALLEL, WORD INPUT LOADING, 7 us SETTLING TIME, 12-BIT DAC, PDSO24, 0.300 INCH, SOIC-24
AD7245ABRZ	ADI	获取价格	LC2MOS 12-Bit DACPORTs
AD7245ABRZ-REEL	ADI	获取价格	AD7245ABRZ-REEL
AD7245AD	ADI	获取价格	IC PARALLEL, WORD INPUT LOADING, 12-BIT DAC, CDIP24, 0.300 INCH, SKINNY, CERAMIC, DIP-24,

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