Datasheet > AD5235BRU250-RL7

AD5235BRU250-RL7

更新时间： 2024-01-17 22:59:18

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管转换器电阻器
页数	文件大小	规格书
28页	767K
描述
IC DUAL 250K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 1024 POSITIONS, PDSO16, MO-153AB, TSSOP-16, Digital Potentiometer

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AD5235BRU250-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：	16
Reach Compliance Code：	unknown	风险等级：	5.84
其他特性：	LINEAR OR LOG TAPER SETTINGS; NONVOLATILE MEMORY; CAN ALSO OPERATE FROM +/-2.25V TO +/-2.75V SUPPLY	标称带宽：	0.125 kHz
控制接口：	3-WIRE SERIAL	转换器类型：	DIGITAL POTENTIOMETER
JESD-30 代码：	R-PDSO-G16	JESD-609代码：	e0
长度：	5 mm	湿度敏感等级：	NOT APPLICABLE
功能数量：	2	位置数：	1024
端子数量：	16	最高工作温度：	85 °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）：	220
认证状态：	COMMERCIAL	电阻定律：	LOGARITHMIC
最大电阻容差：	30%	最大电阻器端电压：	5 V
最小电阻器端电压：		座面最大高度：	1.2 mm
标称供电电压：	5 V	表面贴装：	YES
标称温度系数：	35 ppm/ °C	温度等级：	INDUSTRIAL
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：	250000 Ω
宽度：	4.4 mm	Base Number Matches：	1

AD5235BRU250-RL7 数据手册

Nonvolatile Memory, Dual

1024-Position Digital Potentiometer

AD5235

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Dual-channel, 1024-position resolution

25 kΩ, 250 kΩ nominal resistance

Low temperature coefficient: 35 ppm/°C

Nonvolatile memory stores wiper settings

Permanent memory write protection

Wiper setting readback

Resistance tolerance stored in EEMEM

Predefined linear increment/decrement instructions

Predefined 6 dB/step log taper increment/decrement

instructions

AD5235

ADDR

DECODE

RDAC1

CLK

SDI

SERIAL

INTERFACE

RDAC1

SDO

EEMEM1

POWER-ON

RESET

RDAC2

EEMEM

CONTROL

RDY

RDAC2

EEMEM2

SPI-compatible serial interface

26 BYTES

USER EEMEM

3 V to 5 V single supply or 2.5 V dual supply

26 bytes extra nonvolatile memory for user-defined

information

100-year typical data retention, T_A= 55°C

Power-on refreshed with EEMEM settings

RTOL*

GND

*RAB TOLERANCE

Figure 1.

In the scratchpad programming mode, a specific setting can

be programmed directly to the RDAC²register, which sets the

resistance between Terminal W and Terminal A and Terminal W

and Terminal ꢀ. This setting can be stored into the EEMEM

and is restored automatically to the RDAC register during

system power-on.

APPLICATIONS

DWDM laser diode driver, optical supervisory systems

Mechanical potentiometer replacement

Instrumentation: gain, offset adjustment

Programmable voltage-to-current conversion

Programmable filters, delays, time constants

Programmable power supply

The EEMEM content can be restored dynamically or through

external

strobing, and a

function protects EEMEM

contents. To simplify the programming, the independent or

simultaneous linear-step increment or decrement commands

can be used to move the RDAC wiper up or down, one step at a

time. For logarithmic 6 dꢀ changes in the wiper setting, the

left or right bit shift command can be used to double or halve the

RDAC wiper setting.

Low resolution DAC replacement

Sensor calibration

GENERAL DESCRIPTION

The AD5235 is a dual-channel, nonvolatile memory,¹digitally

controlled potentiometer²with 1024-step resolution. The device

performs the same electronic adjustment function as a mechanical

potentiometer with enhanced resolution, solid state reliability,

and superior low temperature coefficient performance. The

versatile programming of the AD5235 via an SPI®-compatible

serial interface allows 16 modes of operation and adjustment

including scratchpad programming, memory storing and restoring,

increment/decrement, 6 dꢀ/step log taper adjustment, wiper

setting readback, and extra EEMEM¹for user-defined information

such as memory data for other components, look-up table, or

system identification information.

The AD5235 patterned resistance tolerance is stored in the

EEMEM. The actual end-to-end resistance can, therefore, be

known by the host processor in readback mode. The host can

execute the appropriate resistance step through a software

routine that simplifies open-loop applications as well as

precision calibration and tolerance matching applications.

The AD5235 is available in a thin, 16-lead TSSOP package. The

part is guaranteed to operate over the extended industrial

temperature range of −40°C to +85°C.

¹The terms nonvolatile memory and EEMEM are used interchangeably.

²The terms digital potentiometer and RDAC are used interchangeably.

Rev. C

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 that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

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