Datasheet > ISL23348WFRZ

ISL23348WFRZ

更新时间： 2024-11-05 11:57:27

品牌	Logo	应用领域
英特矽尔 - INTERSIL		电位器
页数	文件大小	规格书
19页	865K
描述
Quad, 128 Tap, Low Voltage Digitally Controlled Potentiometer (XDCPâ¢)

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ISL23348WFRZ 数据手册

Quad, 128 Tap, Low Voltage Digitally Controlled

Potentiometer (XDCP™)

ISL23348

Features

• Four potentiometers per package

• 128 resistor taps

The ISL23348 is a volatile, low voltage, low noise, low power,

128 tap, quad digitally controlled potentiometer (DCP) with an

I C Bus™ interface. It integrates four DCP cores, wiper

• 10kΩ, 50kΩ or 100kΩ total resistance

switches and control logic on a monolithic CMOS integrated

circuit.

• I C serial interface

- No additional level translator for low bus supply

- Three address pins allow up to eight devices per bus

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

• Maximum supply current without serial bus activity

(standby)

I C bus interface. Each potentiometer has an associated

volatile Wiper Register (WRi, i = 0, 1, 2, 3) 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 (64 tap

position).

- 5µA @ V and V

- 2µA @ V and V

= 5V

LOGIC

= 1.7V

• Shutdown mode

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

connected to RLi internally

The low voltage, low power consumption, and small package

of the ISL23348 make it an ideal choice for use in battery

- Reduces power consumption by disconnecting the DCP

resistor from the circuit

operated equipment. In addition, the ISL23348 has a V

LOGIC

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

• Power supply

value. This allows for low logic levels to be connected

- V = 1.7V to 5.5V analog power supply

directly to the ISL23348 without passing through a voltage

level shifter.

- V

LOGIC

= 1.2V to 5.5V I C bus/logic 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.

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

• Power-on preset to mid-scale (64 tap position)

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

• 20 Ld TSSOP or 20 QFN packages

Applications

• Power supply margining

• Pb-free (RoHS compliant)

• Trimming sensor circuits

• Gain adjustment in battery powered instruments

• RF power amplifier bias compensation

10000

8000

6000

4000

V_REF

RH1

V_{REF_M}

1 DCP

RW1

ISL23348

ISL28114

2000

RL1

128

TAP POSITION (DECIMAL)

FIGURE 2. V

ADJUSTMENT

FIGURE 1. FORWARD AND BACKWARD RESISTANCE vs TAP

REF

POSITION, 10kΩ DCP

August 24, 2011

FN7903.1

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...19

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与ISL23348WFRZ相关器件

型号	品牌	获取价格	描述	数据表
ISL23348WFRZ-TK	RENESAS	获取价格	Quad, 128 Tap, Low Voltage Digitally Controlled Potentiometer (XDCP™); QFN20, TS
ISL23348WFVZ	RENESAS	获取价格	Quad, 128 Tap, Low Voltage Digitally Controlled Potentiometer (XDCP™); QFN20, TS
ISL23348WFVZ	INTERSIL	获取价格	Quad, 128 Tap, Low Voltage Digitally Controll
ISL23348WFVZ-T7A	RENESAS	获取价格	Quad, 128 Tap, Low Voltage Digitally Controlled Potentiometer (XDCP™); QFN20, TS
ISL23415	INTERSIL	获取价格	Single, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23415	RENESAS	获取价格	Single, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23415_11	INTERSIL	获取价格	Single, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23415TFRUZ-T7A	INTERSIL	获取价格	Single, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23415TFRUZ-TK	INTERSIL	获取价格	Single, Low Voltage Digitally Controlled Potentiometer (XDCP?)
ISL23415TFUZ	INTERSIL	获取价格	Single, Low Voltage Digitally Controlled Potentiometer (XDCP?)

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