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TAS5414ATDKDMQ1 데이터시트 - Texas Instruments

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TAS5414ATDKDMQ1 FOUR-CHANNEL AUTOMOTIVE DIGITAL AMPLIFIERS TI
Texas Instruments TI
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TAS5414A image

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. 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.

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
• 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
• 64-Pin QFP (PHD) Power Package With Heat Slug Up for TAS5414A
• Designed for Automotive EMC Requirements
• Qualified According to AEC-Q100
• 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

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