TAS5709PHP - 20W Stereo Class-D Amplifier | Texas Instruments
部品番号: TAS5709PHP ✓ 生産中TAS5709PHP 概要
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.
ドロップイン代替品: TAS5709PHP — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: TAS5709PHP （同一形状・フットプリント） — 相違点: Package, Product Type.
TAS5709PHPR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TAS5710PHPR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TAS5711PHP
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →TAS5715PHPR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TAS5707PHPR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TAS5709PHP 最大定格＆電気的特性
| Product Type | Stereo digital audio power amplifier |
| Number of Output Channels | 2 channels |
| Output Power | 20 W stereo |
| Amplifier Class | Class D |
| Supply Voltage Range | 8 V to 24 V |
| Input Type | Digital input |
| 出力構成 | Bridge-tied stereo speaker drive |
| Feedback Architecture | Open loop |
| Speaker Equalization | On-chip speaker EQ |
| Dynamic Range Control | On-chip DRC |
| パッケージ | 48-pin HTQFP (PHP), 7 mm x 7 mm |
| 実装タイプ | Surface mount |
| Datasheet Page Count | 59 pages |
TAS5709PHP 48-pin htqfp (php), 7 mm x 7 mm ピン配置ガイド
TAS5709PHP (48-pin htqfp (php), 7 mm x 7 mm 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: TAS5709PHP.
詳細は データシート をご参照ください。
主な用途
TAS5709PHP の用途: 6 件s: Stereo Consumer Speaker Amplifier, Digital Audio Rack Amplifier, Television and Monitor Audio, Portable Speaker and Dock, Smart Speaker and IoT Audio Node, Multimedia Speaker System.
Stereo Consumer Speaker Amplifier
The TAS5709PHP fits a compact stereo speaker stage because it provides two 20 W Class-D output channels, accepts digital audio, and operates from an 8 V to 24 V supply. A host processor can send the serial audio stream directly to the amplifier, reducing the need for a separate digital-to-analog converter and pre-amplifier. On-chip speaker EQ and dynamic range control provide system-level acoustic adjustment without consuming additional host processing resources. Because the verified manufacturer information describes an open-loop device, the final design still requires the specified external feedback and output-filter implementation. Thermal sizing should use the actual supply voltage and speaker impedance rather than the headline 20 W stereo rating alone.
おすすめ
Digital Audio Rack Amplifier
A rack-mounted active speaker is a practical application for the TAS5709PHP because its digital input supports a clean connection to the source processor while its two Class-D channels drive left and right speakers. The 20 W stereo capability is suited to compact near-field or secondary listening positions, while speaker EQ and dynamic range control help the system accommodate different drivers and listening levels. The amplifier’s 8 V to 24 V operating range allows integration with a conventional internal supply, subject to thermal limits. For a low-noise rack product, provide local decoupling and isolate the digital input and switching output return paths to prevent amplifier ripple from reaching sensitive source circuitry.
おすすめ
Television and Monitor Audio
The TAS5709PHP can provide a compact stereo speaker drive solution for televisions, monitors, and display products that already use a digital audio processor. Digital input reduces the number of analog stages between the main processor and the power stage, while the integrated EQ and DRC support predictable output behavior across different panel-mounted speakers. Its 7 mm x 7 mm 48-pin HTQFP package also supports dense board layouts compared with a discrete output solution. The key engineering trade-off is EMI: the switching Class-D outputs require carefully placed filters and grounding so conducted and radiated emissions do not interfere with display, radio, or control circuitry.
おすすめ
Portable Speaker and Dock
The TAS5709PHP is suitable for a portable speaker dock when the product uses a digital-audio source and can allocate an 8 V to 24 V power rail. Its two Class-D channels support stereo playback, and integrated speaker EQ and dynamic range control can adapt output behavior to compact drivers commonly used in portable products. The compact 48-pin HTQFP package supports space-constrained board construction, although thermal management remains critical when the output stage operates near its 20 W stereo rating. Designers should minimize trace impedance in supply connections, maintain the recommended capacitor placement, and compare available battery-derived rails against the minimum operating voltage to avoid clipping or unstable behavior.
おすすめ
Smart Speaker and IoT Audio Node
The TAS5709PHP can serve as the output stage of a smart speaker or IoT audio node whose application processor or network module already produces a digital audio stream. Direct digital connectivity reduces analog interconnects and permits software-controlled EQ and level management close to the speaker. Its 20 W stereo output is suitable for compact premium speakers, while the 8 V to 24 V supply range supports multiple system architectures. The design must still separate sensitive microphone and network circuits from the switching power stage. Use short return paths, careful output-filter placement, and controlled clocking of the digital interface to minimize EMI coupling and startup transients in always-on products.
おすすめ
Multimedia Speaker System
The TAS5709PHP fits multimedia speaker systems requiring two amplified channels and a digital connection to an audio host. Its 20 W stereo Class-D output provides a straightforward route to passive speakers, while integrated EQ and DRC support consistent sound across multiple product configurations. A multimedia system can also use the digital interface to keep source data away from analog input traces, helping preserve signal integrity. Integration is not entirely plug-and-play because the verified device is described as open-loop: the external feedback network and output filters must follow the manufacturer reference design. Validate filter component selection against amplifier stability and the chosen speaker inductance before production.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TAS5709PHP — 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 | TAS5709PHPR | TAS5710PHPR | TAS5711PHP | TAS5715PHPR | TAS5707PHPR |
|---|---|---|---|---|---|---|
| Package | 48-pin HTQFP (PHP) | 48-pin HTQFP (PHP) | 48-pin HTQFP (PHP) | 48-pin HTQFP (PHP) | 48-pin HTQFP (PHP) | 48-pin HTQFP (PHP) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
主な差別化要因
- Directly documented 20 W stereo configuration （vs TAS5715PHPR)
- Confirmed open-loop architecture with speaker processing （vs TAS5710PHPR)
- Documented 8 V to 24 V supply range （vs TAS5711PHP)
- Manufacturer-confirmed PHP package option （vs TAS5709PHPR)
設計ノート
Place the TAS5709PHP close to its speaker output connector and follow the manufacturer layout for the external output filters and feedback components. Keep the Class-D output paths compact and symmetrical, and route them away from microphone, antenna, and clock-sensitive circuits. Accurate output-filter placement reduces switching-edge energy at the connector and helps maintain stability.
Use the manufacturer-recommended input, output, and bypass capacitors at the device pins, including short ground returns. Estimated: power dissipation equals the difference between supply voltage and speaker-average output voltage multiplied by average output current; calculate it with the actual rail and load rather than the 20 W headline rating. Confirm that the 8 V to 24 V operating range covers startup, transient, and idle conditions.
Treat the switching output stage as a deliberate EMI source. Ground the output-filter return correctly, avoid long copper areas that act as antennas, and maintain a continuous ground reference beneath the device where supported by the recommended layout. Validate radiated emissions at the product enclosure level because filtering that passes conducted testing may not guarantee acceptable cabinet-level radiation.
Do not assume that a related TI PHP-package amplifier is automatically interchangeable. Compare pin names, exposed thermal and power connections, digital clocking, control software, feedback topology, output filters, and recommended PCB geometry. For a production substitution, perform side-by-side schematic review and confirm the alternative against the manufacturer datasheet before releasing a revised BOM.
コンプライアンス情報
The supplied verified snippets do not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. These fields must be confirmed from the current Texas Instruments product documentation or manufacturer declaration.
