54405IVZ データシートの表示（PDF） - Intersil

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54405IVZ

CD/MP3 Quality Stereo 2:1 Multiplexer with Click and Pop Elimination

Intersil 

®

Data Sheet

CD/MP3 Quality Stereo 2:1 Multiplexer

with Click and Pop Elimination

The Intersil ISL54405 is a single supply, bidirectional, dual

single-pole/double-throw (SPDT) ultra low distortion, high

OFF-Isolation analog switch that can pass analog signals that

are positive and negative with respect to ground. It is primarily

targeted at consumer and professional audio switching

applications such as Computer Sound Cards and Home

Theater products. The inputs can accommodate ground

referenced signals up to 2VRMS while operating from a single

3.3V or 5V DC supply. The digital logic inputs are 1.8V

logic-compatible when using a single 3.3V or 5V supply. It can

be used in both AC or DC coupled ground referenced

applications.

The ISL54405 features a soft-switch feature and click/pop

circuitry at each signal pin that eliminates clicks and pops

associated with power-up/down conditions of the preceding

amplifier outputs.

With -106dB THD+N performance with a 2VRMS signal into

20kΩ load, superior signal muting, high PSRR and very flat

frequency response the ISL54405 meets the exacting

requirements of consumer and professional audio engineers.

The ISL54405 is available in 16 Ld TSSOP, 16 Ld 3mmx3mm

TQFN, and 16 Ld 2.6mmx1.8mm µTQFN packages. Its

specified for operation over the -40°C to +85°C temperature

range.

TABLE 1. FEATURES AT A GLANCE

ISL54405

Number of Switches

2

Switch Type

SPDT or 2 to 1 MUX

Insertion Loss

THD+N, 2VRMS, 20kΩLoad

OFF-Isolation (MUTE)

±0.01dB

-106dB

125dB

Packages

16 Ld TSSOP, 16 Ld 3x3 TQFN,

16 Ld 2.6x1.8 µTQFN

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

• Application Note AN557 “Recommended Test Procedures

for Analog Switches”

June 5, 2008

ISL54405

FN6699.1

Features

• Clickless Audio Switching

• 2VRMS Signal Switching from 3.3V or 5V Supply

• -106dB THD+N into 20kΩ Load @ 2VRMS

• -108dB THD+N into 32Ω Load @ 3.9mW

• Signal to Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >124dBV

• ±0.01dB Insertion Loss at 1kHz, 20kΩ Load

• ±0.007dB Gain Variation 20Hz to 20kHz

• 125dB Signal Muting into 20kΩ Load

• 90dB PSRR 20Hz to 20kHz

• Single Supply Operation . . . . . . . . . . . . . . . . . . . . 3.3V or 5V

• Available in 16 Ld TSSOP, 16 Ld TQFN, and 16 Ld µTQFN

• Pb-Free (RoHS Compliant)

Applications

• Computer Sound Cards

• Home Theater Audio Products

• SACD/DVD Audio

• DVD Player Audio Output Switching

• Headsets for MP3/Cellphone Switching

• Hi-Fi Audio Switching Application

Block Diagram

DIR_SEL

AC/DC

MUTE

SEL

5V_Supply

ISL54405

LOGIC

AND

CLICK/POP

CONTROL

VDD

CAP_SS

L1

L

L2

R1

R

R2

GND

For 5V operation connect the 5V_Supply pin to 5V and float the

VDD pin. For 3.3V operation connect the VDD pin to 3.3V and float

the 5V_Supply pin.

1

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

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

Copyright Intersil Americas Inc. 2008. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

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