Datasheet > ISL23418TFUZ

ISL23418TFUZ

更新时间： 2024-11-06 12:20:27

品牌	Logo	应用领域
英特矽尔 - INTERSIL		转换器电位器电阻器光电二极管
页数	文件大小	规格书
20页	927K
描述
Single, 128-Tap, Low Voltage Digitally Controlled Potentiometer (XDCPâ¢)

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ISL23418TFUZ 数据手册

Single, 128-Tap, Low Voltage Digitally Controlled

Potentiometer (XDCP™)

ISL23418

The ISL23418 is a volatile, low voltage, low noise, low power,

SPI™ bus, 128 taps, single digitally controlled potentiometer

(DCP), which integrates DCP core, wiper switches, and control

logic on a monolithic CMOS integrated circuit.

Features

• 128 Resistor Taps

• SPI Serial Interface

- No Additional Level Translator for Low Bus Supply

- Daisy Chaining of Multiple DCP

The digitally controlled potentiometer is implemented with a

combination of resistor elements and CMOS switches. The

position of the wiper is controlled by the user through the SPI

bus interface. The potentiometer has an associated volatile

Wiper Register (WR) that can be directly written to and read by

the user. The contents of the WR controls the position of the

wiper. When powered on, the ISL23418 wiper always

commences at mid-scale (64-tap position).

• Wiper Resistance: 70Ω Typical @ V = 3.3V

• Shutdown Mode: Forces DCP into End-to-end Open Circuit;

RW Shorted to RL Internally

• Power-on Preset to Mid-scale (64-tap Position)

• Shutdown and Standby Current <2.8µA Max

• Power Supply

- V = 1.7V to 5.5V Analog Power Supply

The low voltage, low power consumption, and small package

size of the ISL23418 make it an ideal choice for use in battery

- V

LOGIC

= 1.2V to 5.5V SPI Bus/Logic Power Supply

operated equipment. The ISL23418 has a V

down to 1.2V bus operation, independent from the V value.

pin allowing

LOGIC

• DCP Terminal Voltage from 0V to V

• 10kΩ, 50kΩ or 100kΩ Total Resistance

• Extended Industrial Temperature Range: -40°C to +125°C

• 10 Ld MSOP or 10 Ld µTQFN Packages

• Pb-free (RoHS compliant)

This allows for low logic levels to be connected directly to the

ISL23418 without passing through a voltage level shifter.

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.

Applications

• Power Supply Margining

Related Literature

• See ISL23415, “Single, Low Voltage Digitally Controlled

Potentiometer (XDCP™)”

• RF Power Amplifier Bias Compensation

• LCD Bias Compensation

• Gain Adjustment in Battery Powered Instruments

• Portable Medical Equipment Calibration

10000

8000

6000

4000

2000

V_REF

RH1

V_{REF_M}

RW1

ISL23418

ISL28114

RL1

100

125

TAP POSITION (DECIMAL)

FIGURE 1. FORWARD AND BACKWARD RESISTANCE vs TAP

POSITION, 10k

FIGURE 2. V

ADJUSTMENT

REF

August 3, 2011

FN7901.0

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

XDCP is a trademark of Intersil Americas Inc. Intersil (and design) is a trademark 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

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与ISL23418TFUZ相关器件

型号	品牌	获取价格	描述	数据表
ISL23418TFUZ-T	RENESAS	获取价格	Digital Potentiometer, 1 Func, 100000ohm, 3-wire Serial Control Interface, 128 Positions,
ISL23418TFUZ-T7A	RENESAS	获取价格	Single, 128-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP™); MSOP10,
ISL23418TFUZ-TK	RENESAS	获取价格	Single, 128-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP™); MSOP10,
ISL23418UFRUZ-T7A	INTERSIL	获取价格	Single, 128-Tap, Low Voltage Digitally Contro
ISL23418UFRUZ-TK	INTERSIL	获取价格	Single, 128-Tap, Low Voltage Digitally Contro
ISL23418UFUZ	INTERSIL	获取价格	Single, 128-Tap, Low Voltage Digitally Contro
ISL23418UFUZ	RENESAS	获取价格	Single, 128-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP™); MSOP10;
ISL23418UFUZ-T	RENESAS	获取价格	50K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 128 POSITIONS, PDSO10, ROHS CO
ISL23418UFUZ-T7A	RENESAS	获取价格	Single, 128-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP™); MSOP10;
ISL23418UFUZ-TK	RENESAS	获取价格	Single, 128-Tap, Low Voltage Digitally Controlled Potentiometer (XDCP™); MSOP10;

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