AD8802AR

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	434K
描述
12 Channel, 8-Bit TrimDACs with Power Shutdown

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中文翻译

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数据手册
替代型号

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AD8802AR 数据手册

12 Channel, 8-Bit TrimDACs

with Power Shutdown

AD8802/AD8804

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Low Cost

Replaces 12 Potentiometers

Individually Programmable Outputs

3-Wire SPI Compatible Serial Input

Power Shutdown <55 ␮Watts Including I_DD& I_REF

Midscale Preset, AD8802

AD8802/AD8804

REFH

CLK

DAC

REG

D11

D10

ADDR

DEC

Separate V_REFLRange Setting, AD8804

+3 V to +5 V Single Supply Operation

SER

REG

APPLICATIONS

Automatic Adjustment

Trimmer Replacement

Video and Audio Equipment Gain and Offset Adjustment

Portable and Battery Operated Equipment

O10

O11

O12

SDI

DAC

REG

#12

SHDN

GENERAL DESCRIPTION

GND

(AD8802 ONLY)

REFL

(AD8804 ONLY)

The 12-channel AD8802/AD8804 provides independent digitally-

controllable voltage outputs in a compact 20-lead package. This

potentiometer divider TrimDAC® allows replacement of the

mechanical trimmer function in new designs. The AD8802/

AD8804 is ideal for dc voltage adjustment applications.

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

These DAC latches are updated from an internal serial-to-

parallel shift register that is loaded from a standard 3-wire

serial input digital interface. The serial-data-input word is

decoded where the first 4 bits determine the address of the DAC

latches to be loaded with the last 8 bits of data. The AD8802/

AD8804 consumes only 10 µA from 5 V power supplies. In ad-

dition, in shutdown mode reference input current consumption

is also reduced to 10 µA while saving the DAC latch settings for

use after return to normal operation.

Easily programmed by serial interfaced microcontroller ports,

the AD8802 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. The AD8804 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. This is helpful for maximizing the resolution of

devices with a limited allowable voltage control range.

The AD8802/AD8804 is available in the 20-pin plastic DIP, the

SOIC-20 surface mount package, and the 1 mm thin TSSOP-20

package.

Internally the AD8802/AD8804 contains 12 voltage-output

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

voltage input.

TrimDAC is a registered trademark of Analog Devices, Inc.

REV. 0

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: 617/329-4700

Fax: 617/326-8703

12 3 4 5 6 7...16

中文翻译

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AD8802AR 替代型号

型号	品牌	替代类型	描述	数据表
AD8802AR-REEL	ADI	完全替代	IC 12, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDSO20, SOIC-20, Digital to
AD8802ARZ	ADI	类似代替	12 Channel, 8-Bit TrimDACs with Power Shutdown

与AD8802AR相关器件

型号	品牌	获取价格	描述	数据表
AD8802AR-REEL	ADI	获取价格	IC 12, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDSO20, SOIC-20, Digital to
AD8802ARU	ADI	获取价格	12 Channel, 8-Bit TrimDACs with Power Shutdown
AD8802ARU-REEL	ADI	获取价格	12 Channel, 8-Bit TrimDACs with Power Shutdown & Mid-Scale Preset
AD8802ARU-REEL	ROCHESTER	获取价格	12, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDSO20, 1 MM HEIGHT, TSSOP-20
AD8802ARUZ	ADI	获取价格	12 Channel, 8-Bit TrimDACs with Power Shutdown & Mid-Scale Preset
AD8802ARUZ	ROCHESTER	获取价格	12, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDSO20, 1 MM HEIGHT, TSSOP-20
AD8802ARZ	ADI	获取价格	12 Channel, 8-Bit TrimDACs with Power Shutdown
AD8802ARZ	ROCHESTER	获取价格	12, SERIAL INPUT LOADING, 0.6 us SETTLING TIME, 8-BIT DAC, PDSO20, SOIC-20
AD8803	ADI	获取价格	Octal 8-Bit TrimDAC with Power Shutdown
AD8803_15	ADI	获取价格	Octal 8-Bit TrimDAC with Power Shutdown

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