TAS5721DCA - 10W Stereo 2.1 Class-D Amplifier | Texas Instruments
部品番号: TAS5721DCA ✓ 生産中TAS5721DCA 概要
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.
ドロップイン代替品: TAS5721DCA — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストTAS5721DCA 最大定格＆電気的特性
| Product Type | Digital-input Class-D audio amplifier |
| Manufacturer | Texas Instruments |
| Rated Output Power | 10 W |
| Channel Configuration | 2-channel stereo |
| Minimum Supply Voltage | 8 V |
| Maximum Supply Voltage | 26.4 V |
| Audio Input Type | Digital input |
| Amplifier Architecture | Open-loop Class-D |
| Speaker Configuration Support | 2.0 stereo, 2.1, and PBTL |
| Headphone or Line-Driver Support | Yes |
| Audio Processing Features | EQ and DRC |
| パッケージ | HTSSOP-48 (DCA) |
| ピン数 | 48 pins |
| 動作温度範囲 | 0°C to 85°C |
| 電源電流 | 70 mA |
| 実装タイプ | Surface mount |
TAS5721DCA htssop-48 (dca) ピン配置ガイド
TAS5721DCA (htssop-48 (dca) パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: TAS5721DCA.
詳細は データシート をご参照ください。
主な用途
TAS5721DCA の用途: 6 件s: Compact Stereo Speaker System, 2.1 Active Speaker With Subwoofer, Headphone and Line-Level Output, Digital Audio Power Amplifier Module, Consumer Multimedia Speaker, Active Soundbar Speaker.
Compact Stereo Speaker System
The TAS5721DCA fits a compact digital-input stereo speaker because it combines a 10 W stereo output rating with an 8 V to 26.4 V supply range in a 48-pin HTSSOP DCA package. It can support a 2.0 bridge-tied-load speaker arrangement when the product uses a digital audio source. Placing the amplifier close to the speaker connection reduces output-routing requirements while retaining a dedicated Class-D stage for efficient audio power delivery. Actual power into a particular speaker impedance must be confirmed in the manufacturer datasheet.
おすすめ
2.1 Active Speaker With Subwoofer
The TAS5721DCA is suitable for a 2.1 active-speaker product because the verified manufacturer information explicitly identifies 2.1 support alongside stereo operation. A system can combine two satellite speakers with a subwoofer while using the amplifier's digital-input architecture for the source connection. This can simplify a mixed analog-and-digital audio product by reducing the number of separate amplifier stages. Channel routing, subwoofer crossover requirements, continuous output power, and speaker impedance must be verified before implementation.
おすすめ
Headphone and Line-Level Output
The TAS5721DCA's integrated headphone/line-driver capability makes it relevant to audio products that need a local headphone or line output in addition to powered speakers. A digital source can feed the amplifier while the product switches between speaker playback and headphone monitoring according to its control logic. This integration can reduce separate analog-output circuitry and simplify product firmware. Output-level behavior, headphone-impedance support, click suppression, and signal routing should be confirmed from the manufacturer documentation for the final design.
おすすめ
Digital Audio Power Amplifier Module
The TAS5721DCA fits a modular digital audio power stage because it accepts digital input and provides stereo Class-D output from an 8 V to 26.4 V supply. A host processor or digital audio source can deliver the appropriate digital stream while the TAS5721DCA handles power amplification and associated audio processing features. The open-loop architecture may support systems with externally managed gain or feedback, but that arrangement must be implemented exactly as described by Texas Instruments. Decoupling, layout, and the exposed-pad thermal path are especially important in a compact module.
おすすめ
Consumer Multimedia Speaker
The TAS5721DCA can be used in consumer multimedia speakers that receive digital audio and require stereo amplification in a restricted enclosure. Its 10 W stereo designation is appropriate for compact desktop or lifestyle speaker systems, while the 8 V to 26.4 V supply range supports common internal power architectures after regulation. The 48-pin HTSSOP package supports integrated routing and power connections, although its thermal performance depends strongly on PCB copper and vias. Speaker impedance, distortion, thermal rise, and enclosure temperature require qualification.
おすすめ
Active Soundbar Speaker
The TAS5721DCA is relevant to a soundbar architecture that combines left, right, and subwoofer channels with digital source control. Its 2.1 support can align with the speaker topology, and the integrated headphone/line-driver feature can assist development configurations and local monitoring. The device's Class-D output stage can help reduce amplifier heat relative to inefficient linear solutions in compact products. A production design must confirm whether 2.1 operation uses dedicated channels or parallel outputs and must validate every channel's continuous and peak-power requirement.
おすすめ
エンジニアリング参考データ: TAS5721DCA — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Package | HTSSOP-48 (DCA) |
| Brand | Texas Instruments |
| Rated Output Power | 10 W stereo |
| Supply Voltage Range | 8 V to 26.4 V |
| Audio Input | Digital input |
| Amplifier Architecture | Open-loop Class-D |
| Channel Configuration | 2-channel stereo with 2.1 support |
| Headphone or Line Driver | Supported |
| Operating Temperature | 0°C to 85°C |
| Supply Current | 70 mA |
主な差別化要因
- Integrated 2.1-channel support （vs TAS5711PHP)
- Digital-input Class-D integration （vs TAS5711PHP)
- Headphone and line-driver capability （vs TAS5711PHP)
設計ノート
Treat the DCA exposed pad as part of the electrical and thermal design. Place thermal vias beneath or near the exposed pad according to the manufacturer land pattern, and provide uninterrupted ground-plane copper where the datasheet permits. Verify the estimated junction temperature using the actual enclosure temperature, measured or datasheet-derived dissipation, and the assembled-board thermal resistance. The verified 10 W rating does not by itself guarantee that the device can dissipate 10 W at the selected supply voltage and speaker load.
Keep the digital audio inputs, speaker outputs, supply connections, and exposed-pad structure consistent with the official Texas Instruments layout guidance. Place local input and output capacitors at the pins specified by the reference design, and keep high-current output-current paths short and wide. Because the supplied web snippets do not specify the full pinout or capacitor values, use the manufacturer datasheet and evaluation-board layout rather than values from an unrelated amplifier.
Do not interpret the 10 W stereo headline as a guaranteed output into every speaker impedance. Power depends on supply voltage, load impedance, channel configuration, thermal conditions, and the manufacturer test configuration. Likewise, the supplied distributor references contain both 10 W and 15 W descriptions, so use the official TAS5721 data for the exact operating mode. Verify BTL, PBTL, and 2.1 wiring to avoid invalid channel combinations or speaker damage.
コンプライアンス情報
The supplied verified web results do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred.
