DS1881 Просмотр технического описания (PDF) - Maxim Integrated

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производитель

DS1881

Dual NV Audio Taper Digital Potentiometer

Maxim Integrated 

Dual NV Audio Taper Digital Potentiometer

Applications Information

Power-Supply Decoupling

To achieve best results, it is recommended that the

power supplies are decoupled with a 0.01µF or a 0.1µF

capacitor. Use high-quality, ceramic, surface-mount

capacitors, and mount the capacitors as close as pos-

sible to the voltage supplies and GND pins to minimize

lead inductance.

SDA and SCL Pullup Resistors

SDA is an open-collector output on the DS1881 that

requires a pullup resistor to realize high logic levels. A

master using either an open-collector output with a

pullup resistor or a push-pull output driver can be uti-

lized for SCL. Pullup resistor values should be chosen

to ensure that the rise and fall times listed in the AC

Electrical Characteristics table are within specification.

Typical Operating Circuit

5V (VDD)

VDD

DECOUPLING

4.7kΩ 4.7kΩ

CAPACITOR

GND

SDA

HOST

SCL

µC

CE

A2

A1

A0

5V (VCC)

DS1881

5V (VCC)

VCC

DECOUPLING

CAPACITOR

H1

W1

L1

H0

W0

L0

20kΩ

AUDIO IN

(AC + VCC / 2)

20kΩ

VCC / 2 = 2.5V

AUDIO

OUT

Chip Topology

TRANSISTOR COUNT: 52,353

SUBSTRATE CONNECTED TO GROUND

Package Information

For the latest package outline information, go to

www.maxim-ic.com/DallasPackInfo.

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

© 2006 Maxim Integrated Products

Printed USA

is a registered trademark of Maxim Integrated Products, Inc.

is a registered trademark of Dallas Semiconductor Corporation.

Heaney

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