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TAS5707PHP - 20W Stereo Class-D Amplifier | Texas Instruments
The Texas Instruments TAS5707PHP is a 20-W open-loop stereo digital-input Class-D audio power amplifier with speaker EQ and dynamic range control (DRC), housed in a 48-pin HTQFP (PHP) package. The device is intended for driving stereo bridge-tied speakers from a digital audio source and combines an efficient Class-D output stage with integrated digital audio processing. Its digital input architecture supports programmable speaker EQ and DRC, while the open-loop design gives the system designer control over the signal chain and processing configuration. According to the verified TI product and distributor information, the TAS5707PHP provides a two-channel stereo output solution for compact consumer, communication, and embedded audio systems where efficiency, digital control, and speaker-driver capability are important design priorities. A Class-D audio power amplifier is a switching power amplifier that converts a digital or analog audio input into a high-efficiency speaker drive signal. Compared with a linear audio amplifier, the Class-D architecture reduces the amount of power dissipated by the output devices, which is valuable in portable and space-constrained equipment. The TAS5707PHP includes integrated audio processing functions that help tailor the output for speaker characteristics and system volume requirements. This combination of digital input, programmable processing, and a 20-W stereo output makes the device useful in speakers, sound bars, television equipment, and other systems requiring local amplification of a digital audio stream. The verified product description identifies the TAS5707PHP as a 20-W stereo digital audio power amplifier with speaker EQ and DRC. The stereo configuration allows two discrete audio channels to be processed and amplified in a single device, reducing the component count compared with separate mono amplifier channels. The open-loop architecture is also important because it provides a defined signal path that can be integrated with an external audio processor or system controller. The device therefore serves both as a power stage and as a digitally controlled audio subsystem element. The main engineering tradeoff is that the design must be validated for speaker impedance, power limitations, thermal conditions, and the specific digital audio configuration. The manufacturer product page identifies TAS5707PHP as not recommended for new designs, so it should be selected primarily for existing designs, legacy platforms, or qualified repair and production situations rather than as the default choice for a new product. The 48-pin HTQFP (PHP) package also requires a PCB footprint and land pattern that match the manufacturer package drawing. TAS5707PHP can be used in compact stereo speakers, television or monitor audio, communication terminals, portable equipment, and other embedded audio products where two amplified channels are needed. Digital audio sources can feed the amplifier through its digital input, allowing EQ and DRC to be configured in the digital processing domain. Designers should confirm the required sample rate, audio-word format, channel count, speaker impedance, power target, and control configuration against the manufacturer datasheet before layout or firmware development. This product page consolidates the verified TI product description, distributor package information, pricing reference, lifecycle indication, and practical application guidance for engineers evaluating TAS5707PHP. It emphasizes the distinctions that affect a real replacement decision: the 20-W stereo Class-D output, digital-input architecture, integrated speaker EQ and DRC, 48-pin HTQFP (PHP) package, and the manufacturer's not-recommended-for-new-designs status.
TAS5708PHP - 20W Stereo Class-D Audio Amplifier | Texas Instruments
The Texas Instruments TAS5708PHP is a 20 W stereo digital Class-D audio power amplifier with an I2S input, closed-loop feedback, speaker equalization, and dynamic range control, housed in a 48-pin HTQFP (PHP) package. It operates from a 10 V to 26 V supply and is designed to drive stereo bridge-tied speakers with 20.2 W per channel. A digital Class-D audio power amplifier is a power-management IC that accepts digital audio samples and uses internal switching and feedback circuitry to deliver power to loudspeakers. The Class-D topology belongs to the switching-amplifier hierarchy rather than conventional linear amplifiers, improving efficiency while the integrated digital signal path controls volume, equalization, and speaker dynamics. The TAS5708 provides a 32-bit datapath, on-chip dynamic range control, and speaker equalization. Its digital input avoids the prescaling requirements associated with some older audio amplifiers and preserves signal integrity while processing audio. Closed-loop feedback is specifically identified for this device, providing a defined relationship between the amplifier output and the commanded speaker drive. The integrated processing functions reduce the need for separate software or analog signal-conditioning blocks in consumer audio equipment. Dynamic range control can maintain perceived loudness while reducing distortion or clipping, while speaker equalization can compensate for acoustic and enclosure response differences. Exact filter coefficients, configuration registers, protection thresholds, and thermal limits must be confirmed in the manufacturer datasheet before implementation. Typical uses include compact stereo speakers, multimedia speaker systems, Bluetooth speaker enclosures, soundbars, consumer television audio, and other powered speaker products. The 10 V to 26 V supply range suits systems using an external Class-D-compatible supply while keeping the amplifier integrated with digital audio processing. A key design consideration is that the exposed thermal pad and output-filter layout must follow the manufacturer's reference design. Power loss depends on supply voltage, output power, modulation method, and filter efficiency, so thermal analysis should use the worst-case audio waveform rather than only a continuous sine-wave condition. This product record combines manufacturer and distributor information with verified same-family alternatives, package-aware comparisons, and practical implementation guidance. It distinguishes confirmed specifications from values that require engineers to consult the full datasheet or design-support resources.
TAS5709PHP - 20W Stereo Class-D Amplifier | Texas Instruments
The Texas Instruments TAS5709PHP is a 20 W stereo, 2-channel Class-D digital audio power amplifier with an 8 V to 24 V supply, digital input, speaker equalization, and dynamic range control, housed in a 48-pin HTQFP (PHP) package. A Class-D audio power amplifier is a switching power stage that converts digital audio signals into high-efficiency bridge-tied speaker drive. Within the broader hierarchy, the TAS5709PHP belongs to the digital audio amplifier class, then audio amplifiers, then amplifier ICs and analog/mixed-signal semiconductors. Its digital input and integrated processing allow a host processor to deliver audio directly without requiring a separate analog-to-digital converter or pre-amplifier stage. The device provides 20 W stereo output, operates from an 8 V to 24 V supply, and supports digital audio input through a serial interface. On-chip speaker EQ and dynamic range control provide programmable acoustic functions before the signal reaches the power stages. These functions make the amplifier useful where cabinet, speaker, and source characteristics require system-level audio adjustment rather than fixed analog gain alone. Technically, the TAS5709PHP integrates a digital signal-processing path with two Class-D output channels designed to drive stereo bridge-tied speakers. The verified manufacturer information identifies the device as an open-loop Class-D amplifier, meaning the IC is intended for use with external closed-loop feedback circuitry. System designers must therefore account for the feedback network, filtering requirements, output configuration, and protection strategy when developing the speaker-amplifier stage. Typical uses include stereo speaker amplification in consumer electronics, audio racks, television systems, and embedded digital-audio products. Its digital input can simplify connections to audio processors, MPEG decoders, and digital audio sources, while integrated EQ and dynamic range control can reduce the amount of host-side processing required for common speaker-management functions. A key design consideration is the relationship between supply voltage, speaker impedance, thermal dissipation, and Class-D output filtering. The amplifier should be placed near the speaker connectors, with its power and ground system designed to minimize switching noise and output-stage instability. Verify the external feedback and filter topology against the manufacturer datasheet before production use. This page consolidates verified manufacturer and distributor information, practical design guidance, and clearly qualified replacement considerations. It also separates confirmed same-family parts from candidates whose pin compatibility cannot be established from the supplied web evidence, helping engineers make sourcing decisions without treating merely similar devices as true drop-in replacements.
TAS5710PHP - 20W Stereo Class-D Amplifier | Texas Instruments
Texas Instruments TAS5710PHP is a 20 W stereo, digital-input, closed-loop Class-D audio amplifier with speaker equalization and 2-band dynamic range control, housed in a 48-pin HTQFP package measuring 7 x 7 mm. The device operates from a 10 V to 26 V power-supply range and is designed to drive stereo bridge-tied speakers through its integrated digital audio processing and class-D output stages. A Class-D audio amplifier is a switching power amplifier that uses pulse-width modulation to deliver speaker power efficiently. Compared with a linear audio amplifier, this approach reduces the amount of power dissipated as heat in the output stage. A digital-input device accepts encoded audio data rather than an analog line-level signal, allowing software-defined volume, equalization, and dynamic-range-control functions to be applied before the signal reaches the power-output stage. The TAS5710PHP combines two stereo output channels, digital signal processing, and closed-loop output feedback in one package. Its identified 20 W output capability is suitable for compact consumer-audio equipment where space and power efficiency matter. The integrated equalization function can shape speaker response, while the 2-band DRC can reduce unwanted level variation. Exact processing coefficients, gain settings, output-power conditions, and thermal limits depend on the manufacturer configuration and test conditions. The digital input architecture makes the amplifier suitable for systems in which a host processor or digital audio codec supplies I2S-compatible data. Designers can centralize mixing, source selection, volume control, and tone processing in software, while the TAS5710PHP converts the digital stream into a bridge-tied Class-D speaker drive. The closed-loop topology is intended to improve output behavior by using feedback to correct the delivered bridge-tied voltage. Typical uses include powered speakers, soundbars, compact stereo systems, wireless speakers, displays, and consumer audio products with digital audio sources. The 48-pin HTQFP package offers many connections for power, ground, digital audio, configuration, feedback, and output stages, but the complete exposed-pad land pattern and thermal-management requirements must be followed exactly. Layout is as important as the logical signal path. Place the decoupling capacitors close to their associated supply pins, provide a low-impedance ground return for the power stage, and route the sensitive digital, clock, and feedback connections away from switching-node currents. The exposed thermal pad must be connected to the ground plane with adequate copper and vias; otherwise the 20 W class can create a substantial thermal burden even though the amplifier is electrically efficient. This page consolidates the verified manufacturer and distributor information, distinguishes documented capabilities from unspecified parameters, and provides application and design guidance that should be checked against the complete manufacturer datasheet before schematic capture or PCB release.
TAS5711PHP - 20W Stereo Class-D Amplifier | Texas Instruments (Tape & Reel)
The Texas Instruments TAS5711PHP is a 20 W digital-input, open-loop Class-D audio power amplifier for stereo bridge-tied speakers, with 8 V to 26 V PVDD operation, 2.1-channel support, equalization, dynamic range control, and a 48-pin HTQFP package measuring 7 mm by 7 mm. Its digital signal path supports up to two discrete audio channels, while its integrated processing is designed for use with digital audio processors and MPEG decoders. A Class-D audio amplifier is a switching power amplifier that uses efficient transistor output stages to drive speakers through LC filter networks. It belongs to the broader class of audio amplifiers, power amplifiers, and analog and mixed-signal semiconductors. Compared with a linear amplifier, the TAS5711 family is intended to reduce power dissipation while delivering high output power for portable consumer-audio equipment, soundbars, compact televisions, and other embedded audio systems. The verified manufacturer data identifies the TAS5711 as a 20 W stereo amplifier operating from an 8 V to 26 V supply and reaching up to 90% efficiency. It provides digital audio input, programmable channel routing, AD and BD filter-mode support, EQ, DRC, and 2.1 mode. The verified datasheet search result also lists SNR of 106 dB, A-weighted, and describes bridge-tied-load operation for stereo speakers. The device accepts a wide range of input data and data rates through its serial digital interface. This makes the signal path suitable for systems where audio is already processed by a digital audio codec, decoder, application processor, or MPEG source. The internal programmable path can route two discrete channels and supports audio processing functions without requiring a separate analog preamplifier for those functions. Typical uses include stereo speaker drive, compact 2.1 speaker systems, consumer-audio equipment, soundbar amplification, and embedded audio products requiring efficient digital power amplification. The supplied PVDD range provides design flexibility for battery-powered and external-amplifier architectures, although actual speaker output depends on supply voltage, load impedance, thermal conditions, and filter design. Designers should follow the manufacturer datasheet for the exact pin functions, exposed-pad connection, LC filter values, thermal layout, digital interface timing, and power-supply decoupling. Because the part is a Class-D output stage, speaker outputs require the specified external filtering network. PCB placement should keep the power-loop area small, provide adequate copper for thermal dissipation, and route sensitive digital signals away from output switching nodes. This product record consolidates the verified manufacturer description, distributor identification, package information, and practical replacement-search results. It is intended to support design review, sourcing, and datasheet discovery; verify the current datasheet and part-status notices before committing a production design.
TAS5711PHPR - 20W Stereo Class-D Amplifier | Texas Instruments
The Texas Instruments TAS5711PHPR is a 20 W digital-input, open-loop Class-D audio power amplifier for stereo bridge-tied speakers, with 8 V to 26 V PVDD operation, 2.1-channel support, equalization, dynamic range control, and a 48-pin HTQFP package measuring 7 mm by 7 mm. Its digital signal path supports up to two discrete audio channels, while its integrated processing is designed for use with digital audio processors and MPEG decoders. A Class-D audio amplifier is a switching power amplifier that uses efficient transistor output stages to drive speakers through LC filter networks. It belongs to the broader class of audio amplifiers, power amplifiers, and analog and mixed-signal semiconductors. Compared with a linear amplifier, the TAS5711 family is intended to reduce power dissipation while delivering high output power for portable consumer-audio equipment, soundbars, compact televisions, and other embedded audio systems. The verified manufacturer data identifies the TAS5711 as a 20 W stereo amplifier operating from an 8 V to 26 V supply and reaching up to 90% efficiency. It provides digital audio input, programmable channel routing, AD and BD filter-mode support, EQ, DRC, and 2.1 mode. The verified datasheet search result also lists SNR of 106 dB, A-weighted, and describes bridge-tied-load operation for stereo speakers. The device accepts a wide range of input data and data rates through its serial digital interface. This makes the signal path suitable for systems where audio is already processed by a digital audio codec, decoder, application processor, or MPEG source. The internal programmable path can route two discrete channels and supports audio processing functions without requiring a separate analog preamplifier for those functions. Typical uses include stereo speaker drive, compact 2.1 speaker systems, consumer-audio equipment, soundbar amplification, and embedded audio products requiring efficient digital power amplification. The supplied PVDD range provides design flexibility for battery-powered and external-amplifier architectures, although actual speaker output depends on supply voltage, load impedance, thermal conditions, and filter design. Designers should follow the manufacturer datasheet for the exact pin functions, exposed-pad connection, LC filter values, thermal layout, digital interface timing, and power-supply decoupling. Because the part is a Class-D output stage, speaker outputs require the specified external filtering network. PCB placement should keep the power-loop area small, provide adequate copper for thermal dissipation, and route sensitive digital signals away from output switching nodes. This product record consolidates the verified manufacturer description, distributor identification, package information, and practical replacement-search results. It is intended to support design review, sourcing, and datasheet discovery; verify the current datasheet and part-status notices before committing a production design.
TAS5713PHP - 25W Stereo Class-D Amplifier | TI
The Texas Instruments TAS5713PHP is a 25 W stereo digital-input Class-D audio amplifier with equalization and dynamic range control, housed in a 48-HTQFP package measuring 7 mm by 7 mm. It accepts an 8 V to 26 V supply and processes up to two discrete audio channels through one serial data input. The device is designed to drive stereo bridge-tied speakers from digital audio processors and MPEG decoders. A Class-D audio amplifier is a switching power amplifier that efficiently converts digital audio signals into differential speaker outputs. Within the semiconductor hierarchy, it belongs to the amplifier IC family, the audio amplifier IC subcategory, and the broader power-management and signal-processing ecosystem. The TAS5713PHP combines digital signal processing, speaker drive, and integrated audio features in one package. The principal specifications include 25 W output capability, two-channel stereo operation, an 8 V to 26 V supply range, digital input, integrated equalization, and dynamic range control. Its 48-pin HTQFP package supports compact PCB integration while providing separate connections for power, ground, digital audio data, clock signals, and differential speaker outputs. The exact output-power conditions and thermal limits must be confirmed from the manufacturer datasheet. Internally, the TAS5713PHP uses a serial digital-audio input and a programmable data path to route two channels into the stereo output stage. Equalization and dynamic range control are integrated into the signal-processing chain, reducing the need for separate software or hardware blocks in many audio systems. Its Class-D output architecture is intended for efficient bridge-tied speaker drive rather than conventional analog power-amplifier output stages. Typical uses include compact stereo speakers, soundbars, display audio systems, set-top equipment, portable audio products, and other consumer electronics that accept digital audio data. A digital audio interface or processor can feed the serial input, while the two Class-D outputs connect to left and right speakers. System-level thermal design remains important because the available 25 W rating depends on supply voltage, load conditions, and PCB copper. The primary design consideration is to preserve clean power and signal paths around the amplifier. Short output connections, adequate input and output decoupling, stable supply routing, and thermal copper help maintain audio performance. Speaker impedance and power limits must be taken directly from the manufacturer documentation rather than inferred from the headline 25 W rating. This product data combines the verified 25 W stereo Class-D configuration, 8 V to 26 V supply range, 48-HTQFP package, digital processing features, distributor pricing, availability information, and practical integration guidance. It also distinguishes verified facts from parameters that still require direct confirmation in the manufacturer datasheet.
TAS5715PHP - 25W Stereo Class-D Audio Amplifier | Texas Instruments
Texas Instruments TAS5715PHP is a 25 W stereo Class-D digital audio power amplifier with an 8 V to 26 V PVDD range, digital input, integrated speaker EQ, dynamic range control, high-pass filtering, and headphone PWM outputs in a 48-pin HTQFP (PHP) package measuring 7 mm by 7 mm. A Class-D audio power amplifier is an efficient switching power stage that drives stereo bridge-tied speakers using digital input data. Within the broader semiconductor hierarchy, the TAS5715PHP is a digital-input audio power amplifier, a member of the Class-D amplifier family, and an audio amplifier IC used in professional and consumer audio power-management systems. Its 48-pin surface-mount HTQFP package supports dense integration on audio amplifier boards. The verified product information specifies 25 W output into an 8 ohm load from an 18 V supply, together with support for 50 W operation in parallel bridge-tie load, or PBTL, mode with a 4 ohm load. The device accepts digital audio data for up to two discrete channels, allowing a digital audio processor or MPEG decoder to feed the stereo output stages without separate analog-to-digital conversion. The TAS5715 combines speaker signal processing with power amplification. Integrated features include equalization, dynamic range control, high-pass filtering, and DC protection. Headphone PWM outputs add a second use case beyond loudspeaker drive, while efficient Class-D operation reduces the heat normally associated with linear audio output stages. The open-loop architecture provides digital control of the audio signal path rather than relying only on conventional analog feedback. Typical applications include powered stereo speakers, compact consumer audio systems, multimedia equipment, sound bars, and digital-audio source products. Its serial digital input works naturally with digital audio processors and MPEG decoders, while the 25 W stereo rating targets conventional 8 ohm speaker loads. The 50 W PBTL capability provides additional flexibility for suitable 4 ohm loads when the amplifier, thermal design, and board layout support that operating mode. Power-supply and thermal layout are critical because Class-D output current and switching losses produce heat in the HTQFP package. The exposed-pad area and surrounding PCB copper must be designed for effective heat transfer, and speaker outputs must not be connected to ground or chassis. Input routing, power ground separation, and output-filter selection also require careful layout to preserve audio performance and suppress unwanted switching artifacts. This product page consolidates verified manufacturer and distributor information, structured drop-in alternatives, parameter comparisons, and practical design guidance. It distinguishes sourced specifications from unavailable detailed electrical data, helping engineers locate the official datasheet, evaluate replacement options, and plan a robust digital Class-D audio-amplifier implementation.
TAS5716PAP - 20W Stereo Class-D Audio Amplifier | Texas Instruments
Texas Instruments TAS5716PAP is a 20 W stereo digital-input Class-D audio power amplifier with speaker EQ, dynamic range control, and bass boost, housed in a 64-pin HTQFP (PAP) package measuring 10 mm by 10 mm. It operates from a 10 V to 26 V supply and supports stereo bridged-tied speaker output. A Class-D audio amplifier is a switching power amplifier whose output stage operates between conductive and nonconductive states instead of continuously biasing a conventional linear output transistor. In the electronic-component hierarchy, the TAS5716PAP belongs to the Class-D amplifier family, which is part of audio amplifiers, amplifier ICs, and power-management semiconductors. Its digital architecture reduces output-stage dissipation compared with a linear amplifier of comparable output power. The TAS5716PAP combines two serial-data inputs with digital signal processing capabilities. According to the Texas Instruments product page, the amplifier includes speaker EQ, DRC, and bass boost, allowing system designers to shape playback characteristics without implementing all of that processing in an upstream audio codec or digital signal processor. The verified data also identifies support for up to four discrete audio channels, making the device suitable for multi-zone or multi-speaker arrangements when the host processor supplies suitable digital audio streams. The device delivers up to 20 W stereo output from a 10 V to 26 V supply. Its 64-pin HTQFP package provides separate connections for digital audio, control, power, ground, and output-stage functions. The verified component listing identifies an 8 Ω maximum load resistance, and a comparison source reports a maximum power dissipation of 2890 mW. These values should be verified against the complete manufacturer datasheet for the selected speaker impedance, supply voltage, channel configuration, and output-power operating condition. Typical uses include television and display audio, compact stereo speaker systems, wireless speakers, headphones, microphones, and other consumer audio products. The digital input is particularly useful where an I2S-compatible audio processor can supply standard-rate serial audio and system control. Stereo operation can use bridged-tied outputs, while the capability to process discrete channels supports more flexible multi-speaker implementations. A critical design consideration is Class-D output filtering and PCB layout. The switching outputs require a correctly designed low-pass filter before the speaker connection, while the power-supply network must handle high-frequency ripple current. Designers should also confirm channel population, thermal margin, speaker impedance, and the supported digital audio format before releasing production hardware. This page consolidates the verified manufacturer and distributor information into an engineer-oriented comparison, application guide, pricing-data availability note, and design checklist. It also clearly identifies where complete pin, electrical, compliance, and alternative-part data must be obtained from the manufacturer datasheet rather than inferred from search snippets.
TAS5717PHP - 10W Stereo Class-D Amplifier | Texas Instruments
Texas Instruments TAS5717PHP is a 10 W stereo digital-input Class-D audio power amplifier with a 4.5 V to 26 V supply range, integrated capacitor-free headphone output, and a 48-pin HTQFP (PHP) package. It accepts one serial digital audio input and supports two discrete audio channels for efficient bridge-tied speaker drive. The device combines the TAS5717 stereo power-amplifier function with TI DirectPath ground-centered headphone output technology. A Class-D audio amplifier is a switching power amplifier that uses transistor output stages to deliver high audio power efficiently. In bridge-tied-load operation, each output contributes to the voltage across the speaker. This architecture belongs to the broader power-amplifier and audio-IC hierarchy, where efficiency, thermal performance, output-filter requirements, and signal-path integration are central design considerations. Principal device features include 2 x 10 W stereo output capability, digital audio input, a 4.5 V to 26 V operating supply range, and integrated capacitor-free headphone outputs. The verified specifications also report THD+N of 0.13% at 1 W into an 8-ohm load with PVDD at 8 V. A single serial-data input supports programmable routing of two discrete audio channels, making the device suitable for systems receiving audio from digital processors, MPEG decoders, and other digital audio sources. The amplifier's integrated digital signal path reduces the need for a separate analog input interface, while its headphone stage offers a practical transition between loudspeaker and headphone outputs in compact consumer equipment. The PHP package provides 48 pins and a 7 x 7 mm body. Because no verified mechanical drawing, pin table, exposed-pad recommendation, or complete power-dissipation table was included in the supplied data, those implementation details must be confirmed in the manufacturer datasheet before layout is released. Typical uses include powered speakers, multimedia speaker systems, compact consumer audio products, and equipment requiring digital audio input plus both stereo loudspeaker and headphone outputs. Because the loudspeaker interface is a bridge-tied load, neither output should be referenced to system ground without an appropriate coupling or isolation arrangement. The integrated headphone output may reduce the external component count relative to designs using a separate headphone amplifier. A key design consideration is power-rail planning: the verified 4.5 V to 26 V range must cover startup, load-transient, and supply-noise requirements without exceeding the device limits. PCB designers should follow the manufacturer's land pattern, exposed-pad, thermal, output-filter, and decoupling guidance exactly. Speaker and headphone outputs also require EMI and EMI-risk review because Class-D switching currents can couple into sensitive analog or radio-frequency circuitry. This page consolidates the verified manufacturer and distributor information with structured specifications, purchase-intent guidance, application analysis, and honest replacement criteria. It also distinguishes confirmed TAS5717PHP characteristics from parameters that still require datasheet-level verification, helping engineers avoid treating generic Class-D amplifier data as device-specific evidence.
TAS5719PHP - 15W Stereo Class-D Amplifier | Texas Instruments
Texas Instruments TAS5719PHP is a 15 W stereo, 4.5 V to 26 V digital-input Class-D audio amplifier with integrated capacitor-free headphone amplifier, housed in a 48-pin HTQFP (PHP) package measuring 7 mm by 7 mm. It supports two discrete audio channels through one serial data input and is designed to drive stereo bridge-tied speakers. A Class-D audio amplifier is a switching power amplifier that uses pulse-width modulation to deliver speaker output more efficiently than a conventional linear audio amplifier. The hierarchy is digital audio power amplifier to Class-D amplifier to audio amplifier IC, while the TAS5719 also integrates headphone-driver and signal-processing functions. This combination supports compact consumer and industrial audio systems requiring digital sources and analog speaker outputs. The principal features are 2 x 15 W stereo output capability, a 4.5 V to 26 V power-supply range, digital audio input, and an integrated capacitor-free headphone amplifier. Its 48-pin HTQFP package supports surface-mount assembly and thermal management through the exposed thermal pad. The device accepts wide-ranging input data and data rates for straightforward connection to digital audio processors and MPEG decoders. Internally, one serial data input supplies two independently routable discrete audio channels. The digital data path allows channels to be processed before conversion to the power-amplifier stage, reducing the need for a separate analog preamplifier in compatible systems. The integrated capacitor-free headphone path provides an additional low-power analog output function without requiring the traditional series output capacitors used with many headphone drivers. Typical uses include compact stereo speakers, audio docking stations, consumer television equipment, portable entertainment products, and industrial sound systems. The 15 W per-channel output rating is appropriate for small bookshelf speakers and multimedia speaker systems, while the 4.5 V to 26 V supply range accommodates systems powered from external adapters or higher-voltage industrial rails. PCB design should prioritize the exposed thermal pad, clean speaker-output routing, stable supply bypassing, and careful return-current management around the switching power stage. Speaker outputs carry high-frequency PWM energy, so keep sensitive audio inputs and external microphone circuitry away from the output nets. Verify thermal performance and EMI behavior in the final enclosure and load configuration. This page consolidates the verified manufacturer and distributor information, same-package family alternatives, package details, sourcing guidance, and application-specific design considerations. It distinguishes documented electrical facts from parameters that still require confirmation from the manufacturer datasheet before a new PCB or production release.
TAS5721DCA - 10W Stereo 2.1 Class-D Amplifier | Texas Instruments
The Texas Instruments TAS5721DCA is a 10 W stereo, 8 V to 26.4 V digital-input, open-loop Class-D audio amplifier with 2.1-channel support and headphone/line-driver capability, housed in a 48-pin HTSSOP DCA package. A Class-D audio amplifier is a switching power amplifier that uses pulse-width modulation to deliver speaker output efficiently. It belongs to the amplifier IC hierarchy, specifically the digital-input audio amplifier and power-amplifier classes. Unlike a conventional linear output stage, its switching architecture is intended to reduce amplifier dissipation while supporting compact, high-output audio systems. The device supports stereo bridge-tied-load speaker configurations, 2.1 systems containing two satellite speakers and one subwoofer, and parallel bridge-tied-load arrangements. Its digital audio input makes it suitable for systems using a digital audio source, while the open-loop architecture provides a distinct integration path for designs that manage gain or feedback externally. Key features include 10 W stereo output capability, an 8 V to 26.4 V supply range, digital input, support for 2.0 and 2.1 speaker systems, and integrated headphone or line-driver functionality. The 48-pin HTSSOP package provides the required connections for audio inputs, speaker outputs, control signals, power, and ground. The listed operating-temperature range is 0°C to 85°C. Typical uses include compact stereo speakers, multimedia speaker systems, sound bars, active subwoofer combinations, and other consumer audio products requiring efficient digital amplification. The 2.1 support is particularly useful when a product must combine left and right satellite speakers with a subwoofer in one amplifier solution. Designers should verify speaker impedance, power dissipation, thermal performance, decoupling, and output routing against the manufacturer datasheet before layout. The HTSSOP exposed-pad package also requires careful PCB thermal design so heat can spread into the board rather than concentrating beneath the device. This page combines verified manufacturer and distributor facts with explicit data gaps, practical application guidance, parameter comparisons, and sourcing links. It distinguishes confirmed specifications from information that still requires datasheet verification instead of presenting unverified assumptions as guaranteed performance.
TAS5727PHP - 25W Stereo Class-D Audio Amplifier | TI
Texas Instruments TAS5727PHP is a 25 W stereo Class-D digital audio power amplifier with a supply range of 8 V to 26 V, housed in a 48-pin HTQFP (PHP) package measuring 7 mm by 7 mm. It accepts digital audio input, supports bridge-tied-load speaker outputs, and integrates programmable speaker equalization and dynamic range control. The device can deliver 25 W into an 8 ohm load from a 20 V supply and can support 4 ohm loads in bridge-tied-load configurations. A Class-D audio power amplifier is a switching power amplifier whose output transistors operate at high frequency, allowing higher efficiency than a traditional linear amplifier. Within the broader hierarchy, TAS5727PHP is a digital-input audio power amplifier, a Class-D amplifier, an audio amplifier IC, and a power-management semiconductor designed to reproduce low-power digital audio signals at speaker-driving power levels. The primary features of TAS5727PHP include 25 W stereo output capability, an 8 V to 26 V PVDD range, digital signal input, integrated EQ and DRC, and low-RDS(ON) output stages that improve thermal performance. Its digital signal path can accept multiple data rates and route two discrete audio channels, allowing integration with digital audio processors, MPEG decoders, and other source devices. The architecture combines a digital audio input interface with a high-efficiency Class-D output stage. BTL operation permits a speaker to be driven differentially between two output nodes, increasing useful voltage swing into the load. Because the amplifier uses an open-loop digital input architecture, its processing behavior is configured through the associated digital control and configuration method rather than conventional analog feedback around the power stage. Typical uses include powered speakers, compact stereo audio systems, soundbars, wireless speaker enclosures, home-theater equipment, and consumer products that require local amplification of a digital audio stream. The 48-pin surface-mount package supports compact layouts, while the low-RDS(ON) output design addresses heat dissipation in continuously operating audio equipment. Designers should account for the amplifier's thermal dissipation, power-supply current, speaker impedance, PCB copper area, and output-filter requirements. The 8 V to 26 V supply range leaves less headroom than higher-voltage power amplifiers, so supply planning is essential when driving 4 ohm loads or sustained high-level audio. This product page consolidates the verified manufacturer specifications, distributor sourcing information, same-package drop-in candidates, and practical design guidance into one engineering-focused reference for audio-product developers.
TAS5731PHP - 20W Stereo Class-D Amplifier | Texas Instruments
Texas Instruments TAS5731PHP is a 20 W stereo, 41 W mono, digital-input, open-loop Class-D audio amplifier with 2.1-channel support, supplied in a 48-pin HTQFP (PHP) package. It operates from an 8 V to 21.5 V analog power supply and accepts a 3.3 V digital supply. The device supports one or two output channels, allowing a single implementation to address stereo playback or a subwoofer-assisted 2.1 audio system. Its advertised efficiency can reach 90%. A Class-D audio amplifier is a switching power amplifier whose output stage rapidly switches between supply rails, producing a filtered full-bridge output for a speaker load. Within the electronics hierarchy, the TAS5731PHP belongs to the Class-D amplifier family, then to audio power amplifiers, then to amplifier ICs and power-management semiconductors. Its digital input architecture simplifies connection to digital audio processors and MPEG decoders while avoiding an analog input path. Key features include 20 W stereo output capability, 41 W mono output capability, an 8 V to 21.5 V supply range, and 90% efficiency. The manufacturer search data also identifies a 3.3 V digital supply requirement and a 70 mΩ output-device on-resistance. These characteristics suit compact consumer audio equipment where a high-efficiency amplifier can reduce heat generation relative to a linear amplifier operating from the same supply. The PHP package contains 48 pins and measures 7 mm by 7 mm. Its operating-temperature range is -40°C to 85°C. The Part-Pin-Value option refers to the open-loop digital amplifier configuration identified by Texas Instruments; detailed control, filtering, and mixer implementation therefore depend on the associated DSP and external circuit design rather than on a conventional analog gain-control network. Typical applications include stereo speaker systems, compact sound bars, home-theater equipment, active subwoofers, and 2.1-channel multimedia products. The 2.1 support can reduce the need for a separate amplifier when driving left, right, and subwoofer channels. However, thermal performance and output power must be evaluated at the actual supply voltage, load impedance, channel configuration, and PCB thermal conditions. For implementation, follow the manufacturer datasheet for the exposed-pad connection, input and output filtering, power-supply decoupling, and speaker-load layout. The 48-pin HTQFP footprint requires careful thermal-via placement beneath the exposed pad. Verify worst-case dissipation across supply tolerance and audio peaks because sustained near-limit output can raise junction and board temperatures even when the amplifier operates with high efficiency. This product page consolidates the verified manufacturer specifications, current distributor purchasing information, same-family drop-in alternatives, and practical design guidance. It adds context for thermal, layout, replacement, and selection decisions while keeping unavailable electrical details explicitly marked rather than estimating them.
TAS5827 - 47W Stereo Closed-Loop Class-D Amp | TI
The TAS5827 is a stereo high-performance, closed-loop Class-D audio amplifier with an integrated audio processor and support for up to 192-kHz audio. It delivers 47W per channel in BTL mode and is housed in a 32-pin VQFN (5x5 mm) package. The device features a digital input interface, making it ideal for modern digital audio systems. A Class-D amplifier is a switching amplifier that uses pulse-width modulation to achieve high efficiency, often exceeding 90%, compared to linear amplifiers. It is a key component in the audio signal chain, converting digital audio data into high-power analog output while minimizing heat dissipation. The TAS5827 integrates a closed-loop architecture, which improves linearity and reduces distortion, and an audio processor for advanced signal processing. Key features include a delay buffer up to 5ms in BTL mode or 10ms in PBTL mode, Class-H control for enhanced efficiency, and hardware control mode for selecting switching frequency, analog gain, BTL/PBTL mode, and cycle-by-cycle current limit threshold via pin configuration. The device also supports software control mode with classic BQs, 3-band DRC, AGL, and proprietary audio envelope tracking Class-H control. The TAS5827 uses a closed-loop feedback design that reduces power supply noise and improves audio quality. It integrates a high-performance audio processor capable of executing complex DSP algorithms, making it suitable for applications requiring EQ, DRC, and dynamic range compression. The device operates from a single supply and includes comprehensive protection features. Typical applications include smart speakers, soundbars, home theater systems, and active speakers. Its high efficiency and low power dissipation make it ideal for battery-powered and energy-conscious designs. The integrated audio processor reduces external component count, simplifying system design. When designing with the TAS5827, ensure proper PCB layout for thermal management and minimize parasitic inductance in the output stage. Use appropriate decoupling capacitors on the power supply pins and follow the recommended layout in the datasheet for optimal performance.
TAS5827RHBR - 43W Stereo Digital Class-D Amp | Texas Instruments
The Texas Instruments TAS5827RHBR is a 43-W stereo, digital-input, closed-loop Class-D audio amplifier with integrated audio processing and Class-H control. Housed in a 32-pin VQFN (RHB) package measuring 5x5 mm, this device delivers high-efficiency amplification for a wide range of consumer and professional audio applications. It supports a supply voltage range of 4.5V to 26.4V and operates over a temperature range of -40°C to 85°C. A Class-D amplifier is a switching amplifier that uses pulse-width modulation (PWM) to achieve high efficiency, often exceeding 90%, compared to linear amplifiers. The TAS5827 integrates a closed-loop architecture that reduces distortion and improves power supply rejection, making it suitable for high-fidelity audio systems. The digital input interface accepts I2S, TDM, and other digital audio formats, simplifying system design by eliminating the need for external DACs. Key features include a 43-W output power per channel into 4-ohm loads, integrated audio processor with biquad filters and dynamic range compression, and Class-H control that optimizes power supply voltage for efficiency. The device also supports multiple switching frequencies and offers cycle-by-cycle current limit protection. Its closed-loop design ensures low THD+N and high signal-to-noise ratio, critical for premium audio performance. The TAS5827 uses a digital audio processing core that can be configured via I2C or hardware control mode. In hardware mode, switching frequency, analog gain, BTL/PBTL mode, and current limit threshold are set via pins, eliminating the need for software driver integration. This flexibility makes it easy to deploy in systems where firmware development is not desired. Typical applications include smart speakers, soundbars, home theater systems, and automotive audio. The high efficiency reduces heat dissipation, enabling compact designs without large heatsinks. The integrated audio processor allows designers to implement EQ, crossover, and dynamic range control without external DSP. When designing with this device, ensure proper PCB layout with adequate ground planes and decoupling capacitors near the power pins. The thermal pad must be soldered to a copper area for heat dissipation. Also, consider the input signal format and configure the device accordingly for optimal performance.
TAS6754QDKQRQ1 - Automotive 4-Ch Class-D Audio Amp | TI
The TAS6754QDKQRQ1 is an automotive-grade, four-channel digital-input Class-D audio amplifier from Texas Instruments, offered in a 56-pin HSSOP (DKQ) package with exposed thermal pad. It implements 1L modulation, requiring only one inductor per BTL channel, and operates from a 19V supply with a 2MHz switching frequency. The device integrates current sense and real-time DC/AC load diagnostics for robust automotive speaker fault detection. A Class-D audio amplifier is a switching amplifier that converts a digital or analog audio signal into a high-frequency pulse-width modulated square wave, which is then low-pass filtered to reconstruct the audio. Class-D topologies achieve high efficiency (typically 80-90%) because the output transistors operate as switches, minimizing power dissipation compared to linear Class-AB amplifiers. In automotive audio systems, this efficiency reduces heat-sinking requirements and extends the available audio power from the vehicle's electrical system. Key features include four independent audio channels, 1L modulation that removes four inductors versus traditional designs, 2MHz switching for compact output filters, integrated current sense, and DC/AC real-time load diagnostics. The 19V rated supply is aligned with automotive audio power rails, and the AEC-Q100 Q1 suffix qualifies the device for automotive applications. The 56-pin HSSOP package supports surface-mount assembly with an exposed thermal pad for heat removal. 1L modulation is a proprietary Class-D scheme that uses a single inductor per bridge-tied-load channel, reducing system cost and size. The 2MHz switching rate moves the switching fundamental well above the audio band, simplifying the output low-pass filter and lowering out-of-band emissions. Integrated current sense and real-time load diagnostics monitor speaker health, enabling fault detection for shorts, opens, and degradation. The digital input accepts common automotive digital audio formats, eliminating the need for a separate DAC and analog front end. Typical applications include automotive infotainment head units, external amplifier modules, EV pedestrian warning (AVAS), telematics/eCall audio, rear-seat entertainment, and commercial-vehicle audio. The device is especially suited for designs where four channels of clean audio must be delivered from a 19V rail with minimal inductor count and integrated diagnostic coverage. When designing with the TAS6754QDKQRQ1, provide sufficient copper area on the exposed thermal pad and keep the output LC filter close to the device to minimize EMI. Verify the digital audio source timing and protocol against the datasheet before PCB layout.
TCA0372DW - Dual 1A Power Op Amp | onsemi | 16-SOIC
onsemi TCA0372DW is a dual power operational amplifier with 1.0 A output current, a 5 V to 40 V operating range, and a 16-lead SOIC package. The device is intended to amplify low-level error signals directly into high-current loads without adding a separate power-output stage. Its dual-circuit configuration allows two independent power-amplifier channels within one package, reducing board area in multi-axis motion, audio, and power-control systems. A power operational amplifier is a specialized operational amplifier that combines high-voltage signal handling, low-voltage input amplification, and current-drive capability. Within the product hierarchy, it belongs to the operational-amplifier family, amplifier IC family, analog signal-conditioning category, and broader semiconductor category. Unlike a conventional small-signal operational amplifier, the TCA0372 is designed to drive coils, motors, and other loads that require substantially more output current than a standard op amp can supply. The principal verified features include 1.0 A output current, dual power-amplifier operation, a 5 V to 40 V supply range, and operation without deadband crossover distortion. The absence of deadband crossover distortion is especially relevant when the amplifier drives coils because it avoids the output transition region that can introduce nonlinear behavior around zero. According to the onsemi manufacturer datasheet, the monolithic circuit is intended for power supplies and servo amplifiers as well as coil-driving applications. The TCA0372 integrates input amplification and power-output capability in one monolithic device, reducing the number of external drive stages required in a power-control design. Two amplifiers are provided in the package, allowing a dual-axis actuator system or two independent power channels to share one 16-SOIC package. Its wide 5 V to 40 V operating range supports applications operating from conventional industrial rails through higher-voltage motor-control systems. Typical uses include DC servo amplifiers, closed-loop position and speed control, audio power stages, industrial actuator drivers, and power-supply error amplifiers. In a servo loop, the TCA0372 can convert a low-level feedback error into a high-current motor command. For audio, its dual-channel organization can support left and right channels when the load and thermal conditions permit. In power supplies, its output current and high-voltage capability can drive suitable external stages when the required operating point remains within the datasheet limits. Designers should verify the complete electrical characteristics, pin connections, thermal limits, and output-stage behavior in the onsemi datasheet before layout. Decoupling must minimize output-stage transients and supply noise, while PCB copper and thermal design must accommodate dissipation during sustained high-current operation. The 16-pin SOIC footprint also requires adequate spacing from heat-generating components because its relatively small lead frame can limit heat dissipation. This product record combines verified manufacturer and distributor information, same-family replacement analysis, parameter-level comparison, and practical engineering guidance. It distinguishes confirmed TCA0372DW facts from specification fields that were not supplied in the retrieved data, helping engineers make evidence-based sourcing and design decisions.
TCA965B - Window Comparator, 4.5-30 V, 14-DIP | Infineon
The Infineon Technologies TCA965B is a bipolar window discriminator with two adjustable window settings, adjustable hysteresis, and two open-collector digital outputs rated for 50 mA. Its verified supply range is 4.5 V to 30 V, and the specified commercial package is the 14-pin PG-DIP-14-1 through-hole package. The device indicates whether an input voltage is below, inside, or above a defined comparison window. A window comparator is a specialized comparator integrated within the broader voltage-comparator and analog-interface hierarchy. Instead of providing only one switching threshold, it evaluates an input against two limits and reports when that input lies outside the acceptable band. This makes the TCA965B useful for voltage supervision, tracking control, dead-band control, and DC-voltage selection tasks identified in the manufacturer documentation. The window edges can be configured directly, or the window can be established indirectly from its center voltage and half-width. Adjustable hysteresis reduces output chatter when the monitored voltage changes near an edge, while an adjustable reference supports threshold calibration. The open-collector outputs permit wired logic, relay interfaces, and pulled-up buses, but external pull-up resistors and suitable sink-current limits are required. The bipolar implementation supports operation from 4.5 V through 30 V, making the TCA965B appropriate for industrial control systems operating above conventional low-voltage logic rails. Because its outputs are open collector, the device can interface with systems whose logic supply differs from the comparator supply. Designers must account for output rise time, pull-up resistance, load capacitance, and the common-emitter arrangement when wiring the outputs. Typical uses include power-supply sequencing, battery-voltage qualification, tracking power controllers, process-control dead-band monitors, and DC-voltage selection within an allowed tolerance. In each circuit, the two window references determine acceptance limits while the digital outputs report undervoltage, in-window, and overvoltage conditions. The principal tradeoff is that the legacy 14-DIP package is larger than modern surface-mount alternatives, but it supports straightforward prototyping and through-hole assembly. When designing around the TCA965B, begin with the verified supply requirement, configure the reference and window network using the manufacturer guidance, and confirm every output pull-up voltage. Do not assume logic-level compatibility from the 30 V supply capability because the open-collector pins do not actively drive a high output. Check hysteresis against noise and load-transient requirements, then validate the complete threshold system across temperature and supply variation. This page combines the verified manufacturer and distributor records with package, application, comparison, and design guidance. It also distinguishes verified facts from unavailable electrical details rather than estimating unstated thresholds, propagation delays, package dimensions, or prices.
TDA18214AHN/C1,557 - Silicon TV Tuner IC DVB-T | NXP
The NXP Semiconductors TDA18214AHN/C1,557 is a high-performance silicon tuner IC designed for digital terrestrial and digital cable TV reception, controlled via an I2C serial interface and housed in a 40-pin HVQFN (6x6 mm) exposed-pad package. The part delivers a Low IF (LIF) output signal to an external demodulator and supports all major digital TV standards including DVB-T. A silicon tuner is an integrated RF receiver front-end that replaces the can-tuned varactor modules used in legacy analog televisions. Within the receiver signal chain hierarchy, it sits at the top: antenna or cable input -> silicon tuner (RF amplification, image-reject mixing, channel filtering) -> Low IF output -> demodulator IC -> transport stream. Because tuning, gain control, and filtering are all implemented on-chip, the TDA18214 family dramatically reduces board area, BOM count, and factory alignment effort compared with discrete tuner designs. Key features of the TDA18214AHN include single-conversion architecture delivering a Low IF signal, full I2C bus control for channel selection and gain programming, support for all digital terrestrial and cable TV standards (DVB-T, DVB-C, ISDB-T, ATSC, DTMB families), and an exposed-pad 40-HVQFN package suitable for compact set-top box and TV main boards. Surface-mount construction supports standard reflow assembly. Architecturally, the TDA18214 integrates a low-noise RF amplifier, image-reject downconversion mixer, broadband synthesizer, and channel-selection filtering in a single CMOS/BiCMOS die. Delivering LIF directly to the demodulator eliminates SAW-filter-heavy IF stages in many designs, and the digital-controlled gain distribution optimizes linearity versus noise figure across the received channel. Typical applications include digital set-top boxes, integrated digital TV (iDTV) main boards, USB TV tuner dongles, PC-TV capture cards, and cable/terrestrial hybrid receivers. Its broad standards support lets one design serve multiple regional markets with firmware changes only. Design consideration: as a 6x6 mm HVQFN with exposed pad, the thermal and ground path depends on the PCB land pattern; the exposed pad must be soldered to a solid ground plane with thermal vias, and the I2C bus requires proper pull-up sizing for reliable 100/400 kHz communication. This page synthesizes distributor availability data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Note that this part is marked Obsolete (last buy March 31, 2016; last delivery June 30, 2016), so availability is limited to remaining distributor and broker stock as of 2026-10-11.
TDA2009A - 10W+10W Stereo Class-AB Audio Amplifier | STMicroelectronics
The STMicroelectronics TDA2009A is a class-AB dual Hi-Fi audio power amplifier assembled in a Multiwatt® package, delivering 10 W + 10 W of continuous output power per channel into 8 Ω loads (stereo operation from 8 V to 28 V supply). The device is specially designed for high quality stereo applications such as Hi-Fi music centers, mini-component stereos, multimedia speaker systems, and instrument amplifiers that demand dual-channel output from a single, well-protected IC. What is a class-AB audio power amplifier? A class-AB amplifier is the most common bipolar topology used in mid-power audio reproduction; it biases its output stage so that push and pull transistors each conduct for slightly more than half a cycle. This eliminates the crossover distortion of pure class-B designs while keeping efficiency far higher than class-A. The TDA2009A instantiates that topology with on-chip short-circuit protection, thermal shutdown, and AC short-circuit protection of the load, integrating a complete stereo driver into one Multiwatt-11 power package with the heatsink tab on the back. Key features include 10 W + 10 W continuous output into 4 Ω with THD = 10 % at 14 V / 4 Ω (per ST datasheet), 1 % THD typical at lower levels, an operating supply range of 8 V to 28 V, 3 A peak output current per channel, very low harmonic and crossover distortion, and internal protection against short circuits, thermal overload, and DC voltage on the load. The Multiwatt-11 (Pentawatt-style) package exposes a metal tab so the part itself forms the heatsink, simplifying PCB mechanical design. The architecture uses a vertical bipolar power process with quasi-complementary NPN/PNP output pairs, a unity-gain inverting topology per channel, and internal bias generators that minimize quiescent crossover glitch. The result is a flat frequency response from 20 Hz to 20 kHz with low 0.1 % harmonic content, suitable for full-range music reproduction without complex external compensation networks. Typical applications include stereo Hi-Fi music centers, multimedia speaker systems, TV audio output stages, guitar and instrument practice amplifiers, automotive radios (with 14 V supply), and self-powered USB speakers where dual-channel audio from a single chip replaces two single-channel modules. When designing with this device, place a 100 nF decoupling capacitor on the supply pin as close as possible to the IC, use feedback resistors of 39 kΩ for closed-loop gain near 35 dB, and provide adequate heatsinking through a clip-on or bonded tab. The package tab is electrically tied to the -Vs pin (or to the substrate in some legacy datasheets) - consult the datasheet pinout before insulating the heatsink. This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes for the TDA2009A, providing information not consolidated on any single distributor product page.
TDA7297 - 15W+15W Dual Bridge Amplifier | STMicroelectronics
The STMicroelectronics TDA7297 is a dual bridge Class-AB audio amplifier delivering 15W+15W output power in a 15-pin Multiwatt package, designed specifically for TV and portable radio applications. It operates from a wide 6V to 18V supply range and uses an internally fixed gain topology that eliminates the need for SWR capacitors, bootstrap networks, and Boucherot cells. A Class-AB (dual bridge) audio amplifier is a topology that combines two push-pull output stages in a bridge-tied-load (BTL) configuration, allowing higher output swing across a speaker load without large DC-blocking capacitors. The TDA7297 belongs to the broader category of integrated audio power amplifiers, which sit within the analog signal chain and power management domains in a typical consumer electronics design. Dual-bridge configurations are especially valued in compact consumer devices because they double the voltage swing across the speaker and remove the need for a bulky output coupling capacitor. Key features include 15W per channel continuous output into 8 ohm loads, low standby current with a dedicated Standby pin, and a Mute function for click-free power-up sequencing. The device integrates all output transistors in the same silicon die and requires only a few external resistors and a power supply bypass network, enabling very compact PCB designs. Typical THD at 1W output is in the 0.1%-0.5% range, making it suitable for entry-level TV audio, multimedia monitors, and portable boombox designs. The internally fixed gain topology simplifies board layout but limits design flexibility compared to externally adjustable amplifiers like the TDA7294. Thermal performance is handled through the Multiwatt-15 package, which exposes the die tab to a vertical heatsink profile with through-hole pins for robust mechanical mounting. Designers must still respect the safe operating area at high ambient temperatures where sustained 2x15W output can push the junction close to thermal limits without adequate heatsinking. Typical applications include flat-panel TV stereo speaker drivers, portable radio boombox amplifiers, LCD monitor audio outputs, PC motherboard sound subsystems, and DIY audio upgrade kits. The part is commonly found in 2.1-channel subwoofer + satellite systems where a third mono channel can be derived by bridging the two outputs in parallel. When designing with the TDA7297, always provide adequate heatsinking through the Multiwatt tab and respect the 6V-18V supply range. The Standby and Mute pins should be sequenced with a 10kohm/10uF RC network as recommended in the datasheet to achieve click-free power transitions.
TDA7379 - 4x13W / 2x38W Class-AB Quad Audio Power Amplifier | STMicroelectronics
The STMicroelectronics TDA7379 is a Class-AB audio power amplifier capable of 4x13W or 2x38W output, housed in a Multiwatt-15 package and intended for car-radio and high-power consumer audio applications. The device operates from an 18V nominal supply (operating up to 28V) and integrates a fixed 26dB BTL gain stage that eliminates the need for external bootstrap capacitors, Boucherot cells, or feedback networks. An additional feature is the CMOS-compatible standby function that drops quiescent consumption during mute conditions. A Class-AB amplifier is a linear audio power amplifier in which the output transistors are biased into partial conduction, reducing crossover distortion compared to pure Class-B while achieving higher efficiency than Class-A. Within the broader taxonomy, the TDA7379 belongs to the linear power amplifier family, sitting under the audio power amplifier category, which in turn is part of the signal-chain / amplifier IC family. This hierarchy matters because system designers typically select a Class-AB part like the TDA7379 for high-output, low-noise single-supply audio stages where switch-mode solutions would inject unacceptable EMI into the signal path. Key features of the TDA7379 include a minimum external component count (no bootstrap capacitors, no Boucherot cells), internally fixed 26dB BTL gain, a high output power capability (4x13W into 4 ohm in quad single-ended mode or 2x38W into 4 ohm in dual BTL mode), CMOS-compatible standby, short-circuit protection to ground and to VCC, load-dump voltage surge protection, and reversed-battery protection. These features make the part particularly suited to automotive environments where transient voltages and wiring faults are common. The amplifier's quad single-ended / dual BTL topology allows system designers to choose between four channels of moderate-power audio (for a front/rear speaker pair system) or two channels of high-power audio (for a subwoofer or stereo bridge-tied load). Internally fixed gain simplifies design and reduces variability across production boards; the trade-off is that the gain cannot be trimmed externally. Typical applications include car-radio amplifiers, multi-channel automotive head units, active speaker systems, subwoofer amplifiers, public-address (PA) amplifiers, and replacement boards for legacy automotive audio equipment. The Multiwatt-15 through-hole package also makes it a strong candidate for repair and refurbishment of older car-audio head units where the original amplifier IC has failed. When designing with the TDA7379, engineers should keep the supply rails well bypassed (100 nF + 1000 uF minimum) and provide a generous ground plane, as high peak currents flow through the output stage. Output short-circuit detection must be respected - sustained shorts will trigger internal protection, but the design must still ensure the load cannot fault the supply. This page synthesizes distributor pricing, verified drop-in alternatives (same-brand ST TDA family first, then cross-brand equivalents), and practical design notes not found in any single manufacturer datasheet.
TDA8920BTH - 2x100W Class-D Audio Power Amplifier | NXP
The NXP TDA8920BTH is a high-efficiency 2 x 100 W class-D audio power amplifier with very low dissipation, housed in a 24-pin HSOP power package with an exposed thermal pad. It operates over a wide symmetrical supply voltage range of +/-12.5 V to +/-30 V (+/-32 V non-operating) and delivers typical output power of 2 x 100 W into 4 ohm or 8 ohm loads with very low quiescent current. The device can be configured as a single BTL mono channel or as a 2-channel stereo amplifier, and integrates all required analog input, PWM modulator, and gate-drive circuitry for a complete class-D solution. A class-D audio amplifier (also called a switching amplifier) is a type of power amplifier that uses high-frequency pulse-width modulation (PWM) of the audio signal followed by output-stage switching transistors and a low-pass LC reconstruction filter. Compared with classical Class-AB linear amplifiers, class-D topologies achieve dramatically higher efficiency (typically 90%+), far less waste heat, smaller heatsink requirements, and lighter designs, which is why they dominate modern flat-panel TV, soundbar, and portable speaker designs. The TDA8920BTH belongs to the audio amplifier -> power amplifier -> analog IC -> signal chain taxonomy. Key features include differential analog inputs, built-in protection (overcurrent, overtemperature, and undervoltage), selectable BTL/SE mode, mute and standby functions, and an exposed die pad (EP) for direct PCB heatsinking. Its switching frequency is in the typical 350-450 kHz range (data needed for exact figure), enabling use of small output filter inductors and capacitors. The TDA8920BTH uses a self-oscillating or fixed-frequency PWM modulator architecture with feedback after the LC output filter (post-filter feedback), which dramatically reduces distortion and output filter dependency. This topology, combined with NXP's proprietary driver stage, achieves THD figures comparable to high-quality linear amplifiers at a fraction of the power dissipation. Typical applications include home theater and stereo receivers, powered multimedia speakers, subwoofer amplifiers, automotive head-unit booster stages, professional active monitor speakers, and high-end DIY audio builds where 2 x 100 W of clean, efficient power is required in a compact SMD footprint. Its SMD-compatible HSOP24 package also makes it suitable for automated assembly versus the through-hole DBS23P variant (TDA8920BJ). When designing with the TDA8920BTH, pay careful attention to the LC output filter component selection and layout: keep the filter loop area minimal, use low-ESR film or ceramic capacitors, and tie the exposed pad to a large copper pour for thermal management. Always observe the +/-30 V maximum supply rating and include adequate supply decoupling close to the IC pins. This page synthesizes distributor pricing, verified drop-in alternatives (same HSOP24 footprint), practical design notes, and datasheet-based specifications not found on standard distributor listings, giving engineers a complete engineering reference for the TDA8920BTH.