Datasheet > AD5282BRU20

AD5282BRU20

更新时间： 2024-02-10 20:56:27

品牌	Logo	应用领域
亚德诺 - ADI		电位器
页数	文件大小	规格书
10页	154K
描述
+15V, I2C Compatible Digital Potentiometers

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数据手册

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AD5282BRU20 数据手册

PRELIMINARY TECHNICAL DATA

AD5280/AD5282

AD0

Programmable address bit for multiple

package decoding. Bits AD0 & AD1

provide 4 possible addresses.

TABLE 2: AD5282 PIN Function Descriptions

Name

A₁

Description

Logic Output terminal O1

Resistor terminal A₁

Wiper terminal W₁

AD1

Programmable address bit for multiple

package decoding. Bits AD0 & AD1

provide 4 possible addresses.

Common Ground

Negative power supply, specified for

W₁

B₁

V_DD

Resistor terminal B₁

Positive power supply, specified for

GND

V_SS

operation from +5 to +15V.

Active Low, Asynchronous connection of

the wiper W to terminal B, and open

circuit of terminal A. RDAC register

contents unchanged.

operation from 0 to -5V

Logic Supply Voltage, needs to be same

voltage as the digital logic controlling the

AD5282.

Resistor terminal B₂

Wiper terminal W₂

SHDN

V_L

B₂

W₂

A₂

SCL

SDA

Serial Clock Input

Serial Data Input/Output

Resistor terminal A₂

t₈

SDA

t₁

t₆

t₈

t₉

SCL

t₂

t₃

t₄

t₅

t₇

t₁₀

Figure 1. Detail Timing Diagram

Data of AD5280/AD5282 is accepted from the I²C bus in the following serial format:

Slave Address Byte

Instruction Byte

Data Byte

Where:

S = Start Condition

P = Stop Condition

A = Acknowledge

X = Don’t Care

R/W= Read Enable at High and Write Enable at Low

A/B = RDAC sub address select. “Zero” for RDAC1 and “One” for RDAC2

SD = Shutdown, same as SHDN pin operation except inverse logic

O2, O1 = Output logic pin latched values

AD1, AD0 = Package pin programmable address bits

D7,D6,D5,D4,D3,D2,D1,D0 = Data Bits

SCL

SDA

AD1

AD0

R/W

A/B

ACK. BY

AD5280

ACK. BY

AD5280

ACK. BY

AD5280

START BY

MASTER

FRAME 1

Slave Address Byte

FRAME

Instruction Byte

FRAME 3

Data Byte

Figure 2. Writing to the RDAC Register

REV PrE 12 MAR 02

Information contained in this Product Concept Data Sheet describes a product in the early definition stage. There is no guarantee that the information contained here will become a final

product in its present form. For latest information contact Walt Heinzer/Analog Devices, Santa Clara, CA. TEL 408 382-3107; FAX 408 382-2721; email; walt.heinzer@analog.com

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