TAS5414A Datasheet, PDF (1/44 Pages) Texas Instruments – FOUR-CHANNEL AUTOMOTIVE DIGITAL AMPLIFIERS

TAS5414A, TAS5424A
www.ti.com
FOUR-CHANNEL AUTOMOTIVE DIGITAL AMPLIFIERS
SLOS535 – JUNE 2007
FEATURES
• TAS5414A – Single-Ended Input
• TAS5424A – Differential Input
• Four-Channel Digital Power Amplifier
• Four Analog Inputs, Four BTL Power Outputs
• Typical Output Power per Channel at 10%
THD+N
– 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
– 116 W/Ch Into 2 Ω at 21 Vdc PBTL
• Channels Can Be Paralleled (PBTL) for 1-Ω
Applications
• THD+N < 0.02%, 1 kHz, 1 W Into 4 Ω
• Patented Pop- and Click-Reduction
Technology
– Soft Muting With Gain Ramp Control
– Common-Mode Ramping
• Patented AM Interference Avoidance
• Patented Cycle-by-Cycle Current Limit
• 75-dB PSRR
• Four-Address I²C Serial Interface for Device
Configuration and Control
• Configurable Channel Gains: 12-dB, 20-dB,
26-dB, 32-dB
• Load Diagnostic Functions:
– Output Open and Shorted Load
– Output-to-Power and -to-Ground Shorts
– Patented Tweeter Detection
• Protection and Monitoring Functions:
– Short-Circuit Protection
– Load-Dump Protection to 50 V
– Fortuitous Open Ground and Power
Tolerant
– Patented Output DC Level Detection While
Music Playing
– Overtemperature Protection
– Over- and Undervoltage Conditions
– Clip Detection
• 36-Pin PSOP3 (DKD) Power SOP Package
With Heat Slug Up for the TAS5414A
• 44-Pin PSOP3 (DKD) Power SOP Package
With Heat Slug Up for the TAS5424A
• Designed for Automotive EMC Requirements
• Pb-Free Soldering Supported
• ISO9000:2002 TS16949 Certified
• –40°C to 105°C Ambient Temperature Range
APPLICATIONS
• High-power OEM/retail head units and
amplifier modules where feature densities and
system configurations require reduction in
heat from the audio power amplifier
DESCRIPTION
The TAS5414A and TAS5424A are four-channel
digital audio amplifiers designed for use in
automotive head units and external amplifier
modules. The TAS5414A and TAS5424A provide
four channels at 23 W continuously into 4 Ω at less
than 1% THD+N from a 14.4-V supply. Each channel
can also deliver 38 W into 2 Ω at 1% THD+N. The
TAS5414A uses single-ended analog inputs, while
the TAS5424A employs differential inputs for
increased immunity to common-mode system noise.
The digital PWM topology of the TAS5414A and
TAS5424A provides dramatic improvements in
efficiency over traditional linear amplifier solutions.
This reduces the power dissipated by the amplifier
by a factor of ten under typical music playback
conditions. High efficiency is accomplished without
the need for complicated power-supply schemes.
Multiple TAS5414As or TAS5424As can be
synchronized to meet high-channel-count
applications.
The TAS5414A and TAS5424A incorporate all the
functionality needed to perform in the demanding
OEM applications area. They have built-in load
diagnostic functions for detecting and diagnosing
misconnected outputs to help to reduce test time
during the manufacturing process.
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated