TAS5414_08 Datasheet, PDF (1/44 Pages) Texas Instruments – FOUR-CHANNEL AUTOMOTIVE DIGITAL AMPLIFIERS

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TAS5414
TAS5424
SLOS514A – FEBRUARY 2007 – REVISED JULY 2007
FOUR-CHANNEL AUTOMOTIVE DIGITAL AMPLIFIERS
FEATURES
• TAS5414 – Single-Ended Input
• TAS5424 – 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 TAS5414
• 44-Pin PSOP3 (DKD) Power SOP Package
With Heat Slug Up for the TAS5424
• Designed for Automotive EMC Requirements
• Pb-Free Soldering Supported
• AECQ100 Compliant
• 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 TAS5414 and TAS5424 are four-channel digital
audio amplifiers designed for use in automotive head
units and external amplifier modules. The TAS5414
and TAS5424 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 TAS5414 uses
single-ended analog inputs, while the TAS5424
employs differential inputs for increased immunity to
common-mode system noise. The digital PWM
topology of the TAS5414 and TAS5424 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 TAS5414s or
TAS5424s can be synchronized to meet
high-channel-count applications.
The TAS5414 and TAS5424 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