Datasheet > ISL23425

ISL23425

更新时间： 2024-11-09 11:11:43

品牌	Logo	应用领域
英特矽尔 - INTERSIL		电位器
页数	文件大小	规格书
20页	847K
描述
Dual, 256-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

ISL23425 数据手册

Dual, 256-Tap, Low Voltage Digitally Controlled

Potentiometer (XDCP™)

ISL23425

The ISL23425 is a volatile, low voltage, low noise, low power,

256-tap, dual digitally controlled potentiometer (DCP) with an

SPI Bus™ interface. It integrates two DCP cores, wiper switches

and control logic on a monolithic CMOS integrated circuit.

Features

• Two potentiometers per package

• 256 resistor taps

• 10kΩ, 50kΩ or 100kΩ total resistance

• SPI serial interface

Each digitally controlled potentiometer is implemented with a

combination of resistor elements and CMOS switches. The

position of the wipers are controlled by the user through the

SPI bus interface. Each potentiometer has an associated

volatile Wiper Register (WRi, i = 0, 1) that can be directly written

to and read by the user. The contents of the WRi controls the

position of the wiper. When powered on, the wiper of each DCP

will always commence at mid-scale (128 tap position).

- No additional level translator for low bus supply

- Daisy Chaining of multiple DCPs

• Maximum supply current without serial bus activity

(standby)

- 4µA @ V and V

CC LOGIC

- 1.7µA @ V and V

= 5V

= 1.7V

LOGIC

• Shutdown Mode

The low voltage, low power consumption, and small package

of the ISL23425 make it an ideal choice for use in battery

- Forces the DCP into an end-to-end open circuit and RWi is

connected to RLi internally

operated equipment. In addition, the ISL23425 has a V

LOGIC

pin allowing down to 1.2V bus operation, independent from the

value. This allows for low logic levels to be connected

- Reduces power consumption by disconnecting the DCP

resistor from the circuit

directly to the ISL23425 without passing through a voltage

level shifter.

• Power supply

- V = 1.7V to 5.5V analog power supply

The DCP can be used as a three-terminal potentiometer or as a

two-terminal variable resistor in a wide variety of applications

including control, parameter adjustments, and signal processing.

- V

LOGIC

= 1.2V to 5.5V SPI bus/logic power supply

• Wiper resistance: 70Ω typical @ V = 3.3V

• Power-on preset to mid-scale (128 tap position)

• Extended industrial temperature range: -40°C to +125°C

• 14 Ld TSSOP or 16 Ld µTQFN packages

• Pb-free (RoHS compliant)

Applications

• Power supply margining

• Trimming sensor circuits

• Gain adjustment in battery powered instruments

• RF power amplifier bias compensation

10000

8000

6000

4000

2000

V_REF

RH1

V_{REF_M}

1 DCP

ISL23325

RW1

ISL28114

RL1

128

192

256

TAP POSITION (DECIMAL)

FIGURE 1. FORWARD AND BACKWARD RESISTANCE vs TAP

FIGURE 2. V

ADJUSTMENT

REF

POSITION, 10kΩ DCP

June 20, 2011

FN7873.0

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Intersil (and design) and XDCP are trademarks owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners

12 3 4 5 6 7...20

中文翻译

下载PDF

与ISL23425相关器件

型号	品牌	获取价格	描述	数据表
ISL23425TFRUZ-T7A	INTERSIL	获取价格	Dual, 256-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23425TFRUZ-TK	INTERSIL	获取价格	Dual, 256-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23425TFVZ	INTERSIL	获取价格	Dual, 256-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23425UFRUZ-T7A	INTERSIL	获取价格	Dual, 256-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23425UFRUZ-TK	INTERSIL	获取价格	Dual, 256-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23425UFVZ	INTERSIL	获取价格	Dual, 256-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23425WFRUZ-T7A	INTERSIL	获取价格	Dual, 256-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23425WFRUZ-TK	INTERSIL	获取价格	Dual, 256-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23428	INTERSIL	获取价格	Dual, 128-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23428	RENESAS	获取价格	Dual, 128-Tap, Low Voltage Digitally Controll

与ISL23425相关文章

英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

22
苹果iPhone 17将全系采用三星/LG显示LTPO OLED面板
2024-11-05

21
三星深化印度制造布局，供应链本地化进程加速
2024-10-29

47
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

39

产品中心

服务支持

精选活动

关于我们

帮助中心

ISL23425

ISL23425 数据手册

与ISL23425相关器件

与ISL23425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

ISL23425

ISL23425 数据手册

与ISL23425相关器件

与ISL23425相关文章

您还可以找

您在本页遇到什么问题？