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FEATURES

APPLICATIONS

DESCRIPTION

TAS5414A, TAS5424A

SLOS535A – JULY 2007 – REVISED FEBRUARY 2008

www.ti.com

FOUR-CHANNEL AUTOMOTIVE DIGITAL AMPLIFIERS

• 44-Pin PSOP3 (DKD) Power SOP Package With

Heat Slug Up for the TAS5424A

• TAS5414A – Single-Ended Input

• 64-Pin QFP (PHD) Power Package With Heat

• TAS5424A – Differential Input

Slug Up for TAS5414A and TAS5424A

• Four-Channel Digital Power Amplifier

• Designed for Automotive EMC Requirements

• Four Analog Inputs, Four BTL Power Outputs

• AECQ100 Compliant

• Typical Output Power per Channel at 10%

• ISO9000:2002 TS16949 Certified

THD+N

• –40°C to 105°C Ambient Temperature Range

–

28 W/Ch Into 4

Ω at 14.4 Vdc

–

45 W/Ch Into 2

Ω at 14.4 Vdc

–

58 W/Ch Into 4

Ω at 21 Vdc

• High-Power OEM/Retail Head Units and

–

116 W/Ch Into 2

Ω at 21 Vdc PBTL

Amplifier Modules Where Feature Densities

and System Configurations Require Reduction

• Channels Can Be Paralleled (PBTL) for 1-Ω

in Heat From the Audio Power Amplifier

Applications

• THD+N < 0.02%, 1 kHz, 1 W Into 4 Ω

• Patented Pop- and Click-Reduction

The TAS5414A and TAS5424A are four-channel

Technology

digital audio amplifiers designed for use in automotive

–

Soft Muting With Gain Ramp Control

head units and external amplifier modules. The

–

Common-Mode Ramping

TAS5414A and TAS5424A provide four channels at

23 W continuously into 4

Ω at less than 1% THD+N

• Patented AM Interference Avoidance

from a 14.4-V supply. Each channel can also deliver

• Patented Cycle-by-Cycle Current Limit

38 W into 2

Ω at 1% THD+N. The TAS5414A uses

• 75-dB PSRR

single-ended analog inputs, while the TAS5424A

employs differential inputs for increased immunity to

common-mode

system

noise.

The

digital

PWM

Configuration and Control

topology of the TAS5414A and TAS5424A provides

• Configurable Channel Gains: 12-dB, 20-dB,

dramatic improvements in efficiency over traditional

26-dB, 32-dB

linear amplifier solutions. This reduces the power

• Load Diagnostic Functions:

dissipated by the amplifier by a factor of ten under

typical music playback conditions. High efficiency is

–

Output Open and Shorted Load

accomplished without the need for complicated

–

Output-to-Power and -to-Ground Shorts

power-supply

schemes.

Multiple

TAS5414As

or

–

Patented Tweeter Detection

TAS5424As

can

be

synchronized

to

meet

high-channel-count applications.

• Protection and Monitoring Functions:

–

Short-Circuit Protection

The TAS5414A and TAS5424A incorporate all the

functionality needed to perform in the demanding

–

Load-Dump Protection to 50 V

OEM applications area. They have built-in load

–

Fortuitous Open Ground and Power

diagnostic functions for detecting and diagnosing

Tolerant

misconnected outputs to help to reduce test time

–

Patented Output DC Level Detection While

during the manufacturing process.

Music Playing

–

Overtemperature Protection

–

Over- and Undervoltage Conditions

–

Clip Detection

• 36-Pin PSOP3 (DKD) Power SOP Package With

Heat Slug Up for the TAS5414A

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.