Datasheet > 转换器 > 数字电位计> AD5242BRZ100-REEL7

AD5242BRZ100-REEL7

更新时间： 2024-02-20 20:49:59

品牌	Logo	应用领域
亚德诺 - ADI		转换器电位器数字电位计电阻器光电二极管
页数	文件大小	规格书
20页	550K
描述
I2C-Compatible, 256-Position Digital Potentiometers

阅读下载

中文翻译

获取价格

技术参数
数据手册
替代型号

如果您发现信息不准确，欢迎纠错

AD5242BRZ100-REEL7 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOP,	针数：	16
Reach Compliance Code：	unknown	风险等级：	5.82
其他特性：	IT CAN ALSO OPERATE FROM A 3V NOM SINGLE SUPPLY OR +/-2.3V TO +/-2.7V DUAL SUPPLY	标称带宽：	0.069 kHz
控制接口：	2-WIRE SERIAL	转换器类型：	DIGITAL POTENTIOMETER
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e3
长度：	9.9 mm	湿度敏感等级：	1
标称负供电电压：	-2.5 V	功能数量：	2
位置数：	256	端子数量：	16
最高工作温度：	105 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	认证状态：	COMMERCIAL
电阻定律：	LINEAR	最大电阻容差：	50%
最大电阻器端电压：	5.5 V	最小电阻器端电压：	-2.3 V
座面最大高度：	1.75 mm	标称供电电压：	2.5 V
表面贴装：	YES	标称温度系数：	30 ppm/ °C
温度等级：	INDUSTRIAL	端子面层：	MATTE TIN
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
标称总电阻：	100000 Ω	宽度：	3.9 mm

AD5242BRZ100-REEL7 数据手册

浏览型号AD5242BRZ100-REEL7的Datasheet PDF文件第11页

浏览型号AD5242BRZ100-REEL7的Datasheet PDF文件第12页

浏览型号AD5242BRZ100-REEL7的Datasheet PDF文件第13页

浏览型号AD5242BRZ100-REEL7的Datasheet PDF文件第15页

浏览型号AD5242BRZ100-REEL7的Datasheet PDF文件第16页

浏览型号AD5242BRZ100-REEL7的Datasheet PDF文件第17页

AD5241/AD5242

4. Unlike the write mode, the data byte follows immediately

after the acknowledgment of the slave address byte in

Frame 2 read mode. Data is transmitted over the serial bus

in sequences of nine clock pulses (slightly different from

the write mode, there are eight data bits followed by a no

acknowledge Logic 1 bit in read mode). Similarly, the

transitions on the SDA line must occur during the low

period of SCL and remain stable during the high period of

SCL (see Figure 5).

5. When all data bits have been read or written, a stop condition

is established by the master. A stop condition is defined as

a low-to-high transition on the SDA line while SCL is high.

In write mode, the master pulls the SDA line high during

the tenth clock pulse to establish a stop condition (see

Figure 4). In read mode, the master issues a no acknowledge

for the ninth clock pulse (that is, the SDA line remains high).

The master then brings the SDA line low before the tenth

clock pulse, which goes high to establish a stop condition

(see Figure 5).

MULTIPLE DEVICES ON ONE BUS

Figure 33 shows four AD5242 devices on the same serial bus.

Each has a different slave address because the state of their AD0

and AD1 pins are different. This allows each RDAC within each

device to be written to or read from independently. The master

device output bus line drivers are open-drain pull-downs in a

fully I²C-compatible interface. Note, a device is addressed properly

only if the bit information of AD0 and AD1 in the slave address

byte matches with the logic inputs at the AD0 and AD1 pins of

that particular device.

LEVEL-SHIFT FOR BIDIRECTIONAL INTERFACE

While most old systems can operate at one voltage, a new

component may be optimized at another. When they operate

the same signal at two different voltages, a proper method of

level-shifting is needed. For instance, a 3.3 V E²PROM can be

used to interface with a 5 V digital potentiometer. A level-shift

scheme is needed to enable a bidirectional communication so that

the setting of the digital potentiometer can be stored to and

retrieved from the E²PROM. Figure 32 shows one of the techniques.

M1 and M2 can be N-channel FETs (2N7002) or low threshold

FDV301N if V_DDfalls below 2.5 V.

A repeated write function gives the user flexibility to update the

RDAC output a number of times after addressing and instructing

the part only once. During the write cycle, each data byte updates

the RDAC output. For example, after the RDAC has acknowledged

its slave address and instruction bytes, the RDAC output is

updated. If another byte is written to the RDAC while it is still

addressed to a specific slave device with the same instruction,

this byte updates the output of the selected slave device. If

different instructions are needed, the write mode has to start a

completely new sequence with a new slave address, instruction,

and data bytes transferred again. Similarly, a repeated read

function of the RDAC is also allowed.

= 3.3V

= 5V

R_P

SDA1

SCL1

SDA2

SCL2

3.3V

AD5242

E PROM

Figure 32. Level-Shift for Different Voltage Devices Operation

READBACK RDAC VALUE

Specific to the AD5242 dual-channel device, the channel of

interest is the one that was previously selected in the write mode.

In addition, to read both RDAC values consecutively, users have to

perform two write-read cycles. For example, users may first specify

the RDAC1 subaddress in write mode (it is not necessary to issue

the data byte and stop condition), and then change to read mode

to read the RDAC1 value. To continue reading the RDAC2 value,

users have to switch back to write mode, specify the subaddress,

and then switch once again to read mode to read the RDAC2

value. It is not necessary to issue the write mode data byte or

the first stop condition for this operation. Users should refer to

Figure 4 and Figure 5 for the programming format.

SDA

SCL

MASTER

SDA SCL

AD1

SDA SCL

AD1

SDA SCL

AD1

AD0

AD5242

Figure 33. Multiple AD5242 Devices on One Bus

Rev. C | Page 1ꢀ of 20

1...11 12 131415 16 17...20

中文翻译

下载PDF

AD5242BRZ100-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
AD5242BRZ100-REEL7	ADI	当前型号	I2C-Compatible, 256-Position Digital Potentiometers
AD5242BRZ1M	ADI	类似代替	I2C-Compatible, 256-Position Digital Potentiometers
AD5242BR100-REEL7	ADI	完全替代	I2C Compatible 256-Position Digital Potentiometers

与AD5242BRZ100-REEL7相关器件

型号	品牌	获取价格	描述	数据表
AD5242BRZ10-REEL7	ADI	获取价格	I2C-Compatible, 256-Position Digital Potentiometers
AD5242BRZ10-REEL7	ROCHESTER	获取价格	DUAL 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO16, RO
AD5242BRZ1M	ADI	获取价格	I2C-Compatible, 256-Position Digital Potentiometers
AD5243	ADI	获取价格	Dual 256-Position I2C Compatible Digital Potentiometer
AD5243_16	ADI	获取价格	Dual, 256-Position, I2C-Compatible Digital Potentiometers
AD5243BRM10	ADI	获取价格	Dual 256-Position I2C Compatible Digital Potentiometer
AD5243BRM100	ADI	获取价格	Dual 256-Position I2C Compatible Digital Potentiometer
AD5243BRM100-R2	ADI	获取价格	IC 100K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10, 3 X
AD5243BRM100-RL7	ADI	获取价格	Dual 256-Position I2C Compatible Digital Potentiometer
AD5243BRM10-R2	ADI	获取价格	IC 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10, 3 X

与AD5242BRZ100-REEL7相关文章

晶闸管阳极与阴极之间加电压时控制极的电流流动分析
2024-06-05

8
探究MOS管沟道夹断后载流子传输机制及其电路设计影响
2024-06-05

8
光敏电阻的工作原理、作用及检测方法
2024-06-05

6
ENC28J60以太网控制器全面解析：特性、应用、引脚说明
2024-06-05

4

产品中心

服务支持

精选活动

关于我们

帮助中心

AD5242BRZ100-REEL7

AD5242BRZ100-REEL7 技术参数

AD5242BRZ100-REEL7 数据手册

AD5242BRZ100-REEL7 替代型号

与AD5242BRZ100-REEL7相关器件

与AD5242BRZ100-REEL7相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

AD5242BRZ100-REEL7

AD5242BRZ100-REEL7 技术参数

AD5242BRZ100-REEL7 数据手册

AD5242BRZ100-REEL7 替代型号

与AD5242BRZ100-REEL7相关器件

与AD5242BRZ100-REEL7相关文章

您还可以找

您在本页遇到什么问题？