AD8801

更新时间： 2024-11-08 22:39:03

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	215K
描述
Octal 8-Bit TrimDAC with Power Shutdown

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中文翻译

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数据手册

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AD8801 数据手册

Octal 8-Bit TrimDAC

with Power Shutdown

AD8801/AD8803

FEATURES

FUNCTIO NAL BLO CK D IAGRAM

Low Cost

(D ACs 2–7 O m itted for Clar ity)

Replaces Eight Potentiom eters

Eight Individually Program m able Outputs

Three-Wire Serial Input

Pow er Shutdow n ≤ 25 ␮W Including I_DDand I_REF

Midscale Preset, AD8801

REFH

REFL

AD8801/AD8803

REFH

8-BIT

DAC 1

OUT

LATCH

REFL

Separate V_REFLRange Setting, AD8803

+3 V to +5 V Single Supply Operation

GND

DAC

SELECT

APPLICATIONS

Autom atic Adjustm ent

Trim m er Potentiom eter Replacem ent

Video and Audio Equipm ent Gain and Offset Adjustm ent

Portable and Battery Operated Equipm ent

ADDRESS

11-BIT

SERIAL

LATCH

SDI

CLK

REFH

8-BIT

LATCH

DAC 8 OUT

GENERAL D ESCRIP TIO N

REFL

CK RS

T he AD8801/AD8803 provides eight digitally controlled dc

voltage outputs. This potentiometer divider TrimDAC^®allows

replacement of the mechanical trimmer function in new designs.

The AD8801/AD8803 is ideal for dc voltage adjustment

applications.

SHDN

Easily programmed by serial interfaced microcontroller ports,

the AD8801 with its midscale preset is ideal for potentiometer

replacement where adjustments start at a nominal value. Appli-

cations such as gain control of video amplifiers, voltage con-

trolled frequencies and bandwidths in video equipment,

geometric correction and automatic adjustment in CRT com-

puter graphic displays are a few of the many applications ideally

suited for these parts. T he AD8803 provides independent con-

trol of both the top and bottom end of the potentiometer divider

allowing a separate zero-scale voltage setting determined by the

V_REFLpin. T his is helpful for maximizing the resolution of de-

vices with a limited allowable voltage control range.

Internally the AD8801/AD8803 contain eight voltage output

digital-to-analog converters, sharing a common reference volt-

age input.

Each DAC has its own DAC register that holds its output state.

T hese DAC registers are updated from an internal serial-to-par-

allel shift register that is loaded from a standard three-wire serial

input digital interface. Eleven data bits make up the data word

clocked into the serial input register. T his data word is decoded

where the first 3 bits determine the address of the DAC register

to be loaded with the last 8 bits of data. T he AD8801/AD8803

consumes only 5 µA from 5 V power supplies. In addition, in

shutdown mode reference input current consumption is also re-

duced to 5 µA while saving the DAC latch settings for use after

return to normal operation.

T he AD8801/AD8803 is available in 16-pin plastic DIP and the

1.5 mm height SO-16 surface mount packages.

See the AD 8802/AD 8804 for a twelve channel ver sion of this pr oduct.

Tr im D AC 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

中文翻译

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与AD8801相关器件

型号	品牌	获取价格	描述	数据表
AD8801_15	ADI	获取价格	Octal 8-Bit TrimDAC
AD8801AN	ADI	获取价格	Octal 8-Bit TrimDAC with Power Shutdown
AD8801AN	ROCHESTER	获取价格	OCTAL, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDIP16, PLASTIC, DIP-16
AD8801AR	ADI	获取价格	Octal 8-Bit TrimDAC with Power Shutdown
AD8801AR	ROCHESTER	获取价格	OCTAL, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDSO16, 1.50 MM HEIGHT, SO-1
AD8801AR-REEL	ADI	获取价格	IC OCTAL, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDSO16, 1.50 MM HEIGHT, S
AD8801ARZ	ADI	获取价格	Octal 8-Bit TrimDAC with Power Shutdown
AD8801ARZ	ROCHESTER	获取价格	OCTAL, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDSO16, 1.50 MM HEIGHT, SO-1
AD8801ARZ-REEL	ADI	获取价格	Octal 8-Bit TrimDAC with Power Shutdown & Mid-Scale Preset
AD8801ARZ-REEL	ROCHESTER	获取价格	OCTAL, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDSO16, 1.50 MM HEIGHT, SO-1

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