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APPLICATIONS

DESCRIPTION

TAS5414

TAS5424

SLOS514 – FEBRUARY 2007

FOUR-CHANNEL AUTOMOTIVE DIGITAL AMPLIFIERS

• 36-Pin PSOP3 (DKD) Power SOP Package

With Heat Slug Up for the TAS5414

• TAS5414 – Single-Ended Input

• 44-Pin PSOP3 (DKD) Power SOP Package

• TAS5424 – Differential Input

With Heat Slug Up for the TAS5424

• Four-Channel Digital Power Amplifier

• Designed for Automotive EMC Requirements

• Four Analog Inputs, Four BTL Power Outputs

• Pb-Free Soldering Supported

• 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 in

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

heat from the audio power amplifier

Applications

• THD+N < 0.02%, 1 kHz, 1 W Into 4 Ω

• Patented Pop- and Click-Reduction

The TAS5414 and TAS5424 are four-channel digital

Technology

audio amplifiers designed for use in automotive head

–

Soft Muting With Gain Ramp Control

units and external amplifier modules. The TAS5414

–

Common-Mode Ramping

and TAS5424 provide four channels at 23 W

continuously into 4

Ω at less than 1% THD+N from a

• Patented AM Interference Avoidance

14.4-V supply. Each channel can also deliver 38 W

• Patented Cycle-by-Cycle Current Limit

into 2

Ω at 1% THD+N. The TAS5414 uses

• 75-dB PSRR

single-ended analog inputs, while the TAS5424

employs differential inputs for increased immunity to

common-mode system noise. The digital PWM

Configuration and Control

topology of the TAS5414 and TAS5424 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

TAS5414s

or

–

Patented Tweeter Detection

TAS5424s

can

be

synchronized

to

meet

high-channel-count applications.

• Protection and Monitoring Functions:

–

Short-Circuit Protection

The TAS5414 and TAS5424 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

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, 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.