Unboosted audio amplifier with ANC

Products and reference designs

Unboosted audio amplifier with ANC

Block diagram

Overview

When driver audio expectations exceed the capabilities of the standard vehicle entertainment system, an unboosted audio amplifier with active noise cancellation (ANC) enables a premium audio experience that meets the highest performance standards. Our integrated circuits, reference designs and products enable you to efficiently design systems and decrease development time.

Design requirements

Unboosted audio amplifier with ANC designs require:

  • Improved sound quality by reducing audible noise and distortion.
  • High power and performance in small spaces.
  • Processors running sophisticated signal processing algorithms that allow maximized performance for each vehicle.
  • Component solutions that meet any design's stringent EMI requirements.

Block diagram

Find products and reference designs for your system.

Unboosted audio amplifier with ANC

Off-battery power Off-battery power Wide Vin UV/OV voltage supervisor Wide Vin UV/OV voltage supervisor Wide VIN buck Wide VIN buck Wide VIN switch Wide VINswitch Wide VIN LDO Wide VIN LDO Reverse battery protection Reverse battery protection Wide VIN current sense Wide VIN current sense Temp sensor Tempsensor Applications processor Applications processor Digital logic Digital logic Low VIN PMIC Low VIN PMIC Low VIN buck Low VIN buck DSP DSP Voltage translator Voltage translator Applications processor (AP) Applications processor (AP) Non-volatile memory Non-volatile memory DDR memory termination DDR memory termination DDR memory DDR memory Voltage supervisor +watchdog Voltage supervisor +watchdog OR OR Clocking Clocking Clock generator Clock generator Clock synthesizer Clock synthesizer Clock buffers Clock buffers AVB ethernet/proprietary AVB ethernet/proprietary Digital audio interface Digital audio interface OR OR MII or TDM MIIorTDM I2S/TDM I2S/TDM Analog mic inputs Analog micinputs VBAT VBAT CAN bus CAN bus System boot and monitoring System boot and monitoring Mid VIN current sense Mid VIN current sense Multi-channel SAR ADC Multi-channel SAR ADC MCU MCU I2S/TDM I2S/TDM I2C/SPI I2C/SPI System power System power High-side switch High-side switch Mid/low VIN boost Mid/low VIN boost Mid/low VIN buck Mid/low VIN buck Mid/low VIN LDO Mid/low VIN LDO PMIC PMIC Mid/low VIN multi-rail DC/DC Mid/low VIN multi-rail DC/DC Mid/low VIN buck/boost Mid/low VIN buck/boost Analog/MIC inputs Analog/MIC inputs Mid/low VIN boost Mid/low VIN boost Audio ADC Audio ADC ESD protection ESD protection Voltage reference Voltage reference ESD protection ESD protection Audio bus PHY Audio bus PHY Ethernet PHY EthernetPHY Communication interface Communication interface CAN FD transceiver CAN FD transceiver ESD protection ESD protection Audio amplifier Audio amplifier Temperature sensor Temperature sensor Class-D amplifier Class-D amplifier

Audio amplifier

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The audio amplifier subsystem, contains the speaker drive amplifiers.

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Audio (6)
Speaker amps
  • TAS6684-Q1Automotive, 45V, 13A, digital input, four-channel Class-D audio amplifier with current sense
    Data sheet: PDF | HTML
  • TAS6424E-Q1Automotive, 75-W, 2-MHz, quad-channel, 4.5- to 26.4-V digital input Class-D audio amplifier
    Data sheet: PDF | HTML
  • TAS6754-Q1Automotive, 19V, digital-input four-channel Class-D audio amplifier with 1L modulation
    Data sheet: PDF | HTML
  • TAS6424R-Q1Automotive, 75-W, 2-MHz, quad-channel, 4.5- to 26.4-V digital input Class-D audio amplifier
    Data sheet: PDF | HTML
  • TPA3255-Q1Automotive, 315-W, 2-ch, 18- to 53.5-V supply analog input Class-D audio amplifier
    Data sheet: PDF | HTML
  • TAS6422-Q1Automotive, 75-W, 2-MHz, 2-ch 4.5- to 26.4-V digital input Class-D audio amplifier w/ load dump
    Data sheet: PDF | HTML
Sensors (5)
Digital temperature sensors
  • TMP102-Q1Automotive ±2°C 1.4V to 3.6V digital temperature sensor with I2C/SMBus in 2.56mm2 pack
    Data sheet: PDF | HTML
  • TMP75-Q1Automotive Temp Sensor with I2C/SMBus Interface in Industry Standard LM75 Form Factor & Pinout
    Data sheet: PDF | HTML
Analog temperature sensors
  • LMT86-Q1Automotive Grade, 2.2V-Capable, 10 uA Analog Output Temperature Sensor
    Data sheet: PDF | HTML
  • LM60-Q1Automotive Grade, ±2°C Analog Output Temperature Sensor
    Data sheet: PDF | HTML
  • LM50±2°C analog output temperature sensor, with 10mV/°C gain
    Data sheet: PDF | HTML
  • PMP11769700-W Automotive External Audio Amplifier Reference Design
    Test report: PDF Schematic: PDF
  • PMP2346848V input, 875W peak power, multiphase buck converter reference design for audio systems
    Test report: PDF | HTML Schematic: PDF
  • PMP9484Highly Efficient and Compact 100-W Automotive Amplifier Reference Design with Boost Converter
    Test report: PDF Schematic: PDF
  • TIDA-00573Automotive 4-Channel Class D Amplifier Reference Design for Head Unit
    Design guide: PDF Schematic: PDF
  • TIDA-00733Automotive 8-Channel Class-D Amplifier with 2.1 MHz Switching Power Supply Reference Design
    Design guide: PDF Schematic: PDF
  • TIDA-00743Automotive 2-MHz Class-D, 4-Channel, 21-W Audio Amplifier in Class AB Form-Factor Reference Design
    Design guide: PDF Schematic: PDF Schematic: PDF
  • TIDA-020033Automotive Class-H audio and tracking power supply reference design
    Design guide: PDF | HTML

Technical documentation

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Type Title Date
Technical article Automotive external amplifiers: Why and how? PDF | HTML 31 Aug 2023
Application note Automotive Diagnostics Using TAS2505-Q1 (Rev. C) PDF | HTML 29 Jun 2022
Technical article Automotive audio from the inside out: more channels, more power, more applications PDF | HTML 28 Jul 2023
Application brief Current Sense Amplifiers in Class-D Audio Subsystems 27 Dec 2017
Circuit design Non-inverting microphone pre-amplifier circuit (Rev. A) PDF | HTML 26 Sep 2024
Application note Class-D Amplifier External Load Diagnostics 23 Jan 2017
Application brief Active Filtering in Automotive Audio Applications (Rev. A) 23 Aug 2019
Technical article Forget the tiny homes craze – Have you heard about tiny inductors for automotive C PDF | HTML 22 Aug 2023
Technical article Get loud with a 700W automotive audio amplifier for infotainment systems PDF | HTML 21 Sep 2023
Selection guide Automotive Infotainment EE Buck Converter/Controller Selection Guide (Rev. B) 21 May 2021
Technical article 4 audio trends transforming the automotive industry PDF | HTML 20 Jul 2023
User guide Single-Supply Electret Microphone Preamplifier Reference Design 18 Feb 2015
White paper Automotive Audio Design Considerations to Minimize Amplifier Size & Thermal Load 15 Oct 2019
Technical article What are the advantages of an automotive temperature sensor IC compared to an NTC? PDF | HTML 15 Jun 2023
Application brief Current Sense Amplifiers in Class-D Audio Subsystems (Rev. A) PDF | HTML 15 Aug 2022
Application note Audio Post Processing Engine on Jacinto™ DRA7x Family of Devices 14 Sep 2018
Technical article There are more ways than you think to reduce conducted EMI PDF | HTML 14 Aug 2023
More literature TI Automotive External Amplifiers (Rev. A) 13 Mar 2017
Technical article Why you should use a Class-D audio amplifier in your automotive infotainment syste PDF | HTML 11 Sep 2023
Technical article How do automotive cabin sound-enhancement systems work? PDF | HTML 08 Jun 2023
Technical article Concerned about transitioning from Class-AB to a Class-D? Well, you shouldn’t be. PDF | HTML 01 Aug 2023

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