Datasheet > AD5246BKS100-RL7

AD5246BKS100-RL7

更新时间： 2024-02-29 04:50:08

品牌	Logo	应用领域
罗彻斯特 - ROCHESTER		光电二极管转换器电阻器
页数	文件大小	规格书
17页	1435K
描述
100K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 128 POSITIONS, PDSO6, 2 X 2.10 MM, MO-203AB, SC-70, 6 PIN

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技术参数
数据手册

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AD5246BKS100-RL7 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Active	零件包装代码：	TSSOP
包装说明：	TSSOP,	针数：	6
Reach Compliance Code：	unknown	风险等级：	5.36
Is Samacsys：	N	其他特性：	IT CAN ALSO OPERATE FROM A 5V NOMINAL SUPPLY
标称带宽：	0.04 kHz	控制接口：	2-WIRE SERIAL
转换器类型：	DIGITAL POTENTIOMETER	JESD-30 代码：	R-PDSO-G6
JESD-609代码：	e0	长度：	2 mm
湿度敏感等级：	1	功能数量：	1
位置数：	128	端子数量：	6
最高工作温度：	125 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	240	认证状态：	COMMERCIAL
电阻定律：	LINEAR	最大电阻容差：	20%
最大电阻器端电压：	3 V	最小电阻器端电压：
座面最大高度：	1.1 mm	标称供电电压：	3 V
表面贴装：	YES	标称温度系数：	45 ppm/ °C
温度等级：	AUTOMOTIVE	端子面层：	TIN LEAD
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
标称总电阻：	100000 Ω	宽度：	1.25 mm
Base Number Matches：	1

AD5246BKS100-RL7 数据手册

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AD5246

A repeated write function gives the user flexibility to update the

RDAC output a number of times after addressing the part only

once. For example, after the RDAC has acknowledged its slave

address in write mode, the RDAC output updates on each succes-

sive byte. If different instructions are needed, the write/read mode

has to start again with a new slave address and data byte.

Similarly, a repeated read function of the RDAC is also allowed.

GND

LEVEL SHIFTING FOR BIDIRECTIONAL INTERFACE

Figure 32. Maximum Terminal Voltages Set by V_DDand GND

While most legacy systems may be operated at one voltage,

a new component may be optimized at another. When two

systems operate the same signal at two different voltages, proper

level shifting is needed. For instance, one can use a 1.8 V

E²PROM to interface with a 5 V digital potentiometer. A level

shifting scheme is needed to enable a bidirectional communi-

cation so that the setting of the digital potentiometer can be

stored to and retrieved from the E²PROM. Figure 30 shows

one of the implementations. M1 and M2 can be any N channel

signal FETs, or if V_DDfalls below 2.5 V, M1 and M2 can be low

threshold FETs such as the FDV301N.

MAXIMUM OPERATING CURRENT

At low code values, the user should be aware that due to low

resistance values, the current through the RDAC may exceed

the 5 mA limit. In Figure 33, a 5 V supply is placed on the

wiper, and the current through Terminal W and Terminal B is

plotted with respect to code. A line is also drawn denoting the

5 mA current limit. Note that at low code values (particularly

for the 5 kꢁ and 10 kꢁ options), the current level increases

significantly. Care should be taken to limit the current flow

between W and B in this state to a maximum continuous

current of 5 mA and a maximum pulse current of no more than

20 mA. Otherwise, degradation or possible destruction of the

internal switch contacts can occur.

= 1.8V

= 5V

DD1

DD2

SDA2

SDA1

SCL1

100

SCL2

1.8V

5mA CURRENT LIMIT

E²PROM

AD5246

= 5kΩ

Figure 30. Level Shifting for Operation at Different Potentials

= 10kΩ

= 50kΩ

0.1

ESD PROTECTION

= 100k

All digital inputs are protected with a series input resistor

and parallel Zener ESD structures, as shown in Figure 31.

This applies to the digital input pins SDA and SCL.

0.01

112

128

CODE (Decimal)

Figure 33. Maximum Operating Current

340Ω

LOGIC

POWER-UP SEQUENCE

GND

Since the ESD protection diodes limit the voltage compliance

at Terminal B and Terminal W (see Figure 32), it is important

to power V_DD/GND before applying any voltage to Terminal B

and Terminal W% otherwise, the diode is forward biased such

that V_DDis powered unintentionally and may affect the rest of

the user’s circuit. The ideal power-up sequence is in the follow-

ing order: GND, V_DD, digital inputs, and then V_B/V_W. The

relative order of powering V_Band V_Wand the digital inputs

is not important, providing they are powered after V_DD/GND.

Figure 31. ESD Protection of Digital Pins

TERMINAL VOLTAGE OPERATING RANGE

The AD5246 V_DDand GND power supply defines the boundary

conditions for proper 3-terminal digital potentiometer

operation. Supply signals present on Terminal B and

Terminal W that exceed V_DDor GND are clamped by

the internal forward biased diodes (see Figure 32).

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与AD5246BKS100-RL7相关器件

型号	品牌	获取价格	描述	数据表
AD5246BKS10-R2	ADI	获取价格	128-Position I2C Compatible Digital Resistor
AD5246BKS10-R2	ROCHESTER	获取价格	10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 128 POSITIONS, PDSO6, 2 X 2.10
AD5246BKS10-RL7	ADI	获取价格	128-Position I2C Compatible Digital Resistor
AD5246BKS50-R2	ADI	获取价格	128-Position I2C Compatible Digital Resistor
AD5246BKS50-RL7	ADI	获取价格	128-Position I2C Compatible Digital Resistor
AD5246BKS50-RL7	ROCHESTER	获取价格	50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 128 POSITIONS, PDSO6, 2 X 2.10
AD5246BKS5-R2	ADI	获取价格	128-Position I2C Compatible Digital Resistor
AD5246BKS5-RL7	ROCHESTER	获取价格	5K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 128 POSITIONS, PDSO6, 2 X 2.10
AD5246BKS5-RL7	ADI	获取价格	128-Position I2C Compatible Digital Resistor
AD5246BKSZ100-R2	ADI	获取价格	128-Position I2C-Compatible Digital Resistor

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