TAS5102DAD - 20W Stereo Class-D Power Stage | Texas Instruments
部品番号: TAS5102DAD ✓ 生産中TAS5102DAD 概要
A Class-D audio amplifier is a switching power stage that converts a PWM input into a high-frequency, high-current bridge-tied-load waveform. This approach belongs to the amplifier IC and power-management semiconductor hierarchy and can provide high output efficiency compared with a conventional linear output stage. The TAS5102 family is intended for audio systems where a digital audio source supplies PWM signals and the power stage must drive an 8-ohm speaker load.
The manufacturer identifies 20-W and 15-W stereo output capability and specifically states 18 W per channel into an 8-ohm BTL load at 10% THD+N with a heatsink. Other highlighted characteristics include greater than 100-dB A-weighted SNR and less than 0.1% THD+N at 1 W. These values define useful operating points but should not be interpreted as guarantees across every supply voltage, temperature, filter, and thermal condition.
The TAS5102DAD is an integrated power stage rather than a complete host audio processor. Its PWM inputs allow connection to a digital audio DAC or audio processor, while external output inductors and LC filtering convert the bridge-tied-load waveform into a filtered speaker drive. Differential outputs also eliminate the need for output coupling capacitors when the recommended speaker filter is implemented correctly.
Typical applications include stereo powered speakers, active bookshelf speakers, compact multimedia speakers, soundbar power stages, and other consumer audio products accepting PWM input. The 8-V to 23-V supply range suits systems using a bus above the 5-V rail level, while the exposed thermal pad allows heat to spread through the PCB and an optional heatsink to extend continuous-output capability.
For a new design, follow the manufacturer datasheet for the exact PWM input logic, differential output filtering, component values, exposed-pad land pattern, thermal layout, and bypass-capacitor requirements. Pay particular attention to output-filter selection because speaker current, filter losses, and switching-edge behavior can materially affect both output power and thermal rise.
This page consolidates the verified manufacturer and distributor information for TAS5102DAD, maps the important output and thermal constraints, identifies qualification limits, and provides application-focused engineering guidance. It also documents where complete pin-level and electrical details must be confirmed in the TI datasheet before schematic release or PCB implementation.
ドロップイン代替品: TAS5102DAD — 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TAS5102DAD 最大定格＆電気的特性
| Product Type | Stereo PWM-input Class-D audio amplifier power stage |
| Channel Configuration | 2-channel stereo |
| Maximum Stereo Output Power | 20 W |
| Per-Channel Output Power at 10% THD+N | 18 W into 8-ohm BTL at 18 V with a heatsink |
| Lower Per-Channel Output Power at 10% THD+N | 15.5 W into 8-ohm BTL |
| Supply Voltage Range | 8 V to 23 V |
| Signal-to-Noise Ratio | Greater than 100 dB A-weighted |
| Total Harmonic Distortion plus Noise | Less than 0.1% at 1 W |
| Total Harmonic Distortion plus Noise | 10% at 18 W per channel into 8-ohm BTL at 18 V with a heatsink |
| Output Architecture | Bridge-tied-load differential output |
| Input Architecture | PWM input |
| パッケージ | 32-pin HTSSOP (DAD) |
| Package Pin Count | 32 pins |
| Thermal Construction | Thermally enhanced package with exposed pad |
| 動作温度範囲 | 0°C to 70°C |
| 実装タイプ | Surface mount |
TAS5102DAD 32 pins ピン配置ガイド
TAS5102DAD (32 pins 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: TAS5102DAD.
詳細は データシート をご参照ください。
主な用途
TAS5102DAD の用途: 6 件s: Active Bookshelf Speakers, Powered Multimedia Speakers, Stereo Soundbar Power Stage, Digital Audio Speaker Power Module, Portable Powered Speaker, Compact Consumer Audio System.
Active Bookshelf Speakers
The TAS5102DAD fits an active bookshelf speaker when the digital audio source can provide compatible PWM signals. Its 2-channel architecture supports left and right 8-ohm BTL speaker loads, and the manufacturer specifies 18 W per channel at 18 V with 10% THD+N when a heatsink is used. Place the differential outputs through the prescribed LC output filter, spread heat from the exposed pad into the PCB, and reserve copper area for an optional heatsink. The 8-V to 23-V supply range accommodates an internal audio rail above 5 V. Actual continuous output must be reevaluated with the selected enclosure, speaker impedance, filter losses, and worst-case thermal conditions.
おすすめ
Powered Multimedia Speakers
A powered multimedia speaker can use the TAS5102DAD to convert two PWM audio channels into filtered differential speaker drive. Texas Instruments specifies 20-W stereo capability, greater than 100-dB A-weighted SNR, and less than 0.1% THD+N at 1 W for the device. These characteristics suit compact desktop and multimedia systems requiring more output than a line-level headphone or analog amplifier stage. The system designer must provide a compatible PWM source, implement the recommended output filters, and maintain adequate exposed-pad copper. Validate the speaker crossover point, because filter component loss and amplifier behavior can affect tonal response and thermal performance.
おすすめ
Stereo Soundbar Power Stage
The TAS5102DAD is suitable for the power-amplifier section of a compact stereo soundbar when the host processor generates the required PWM signals. Its 32-pin HTSSOP DAD package integrates two output channels into a small board area, while the thermally enhanced package supports PCB heat spreading and optional heatsinking. The 8-V to 23-V supply range fits common multi-rail internal power systems, but the amplifier should follow the closest upstream regulator only when its dynamic and thermal requirements are satisfied. Keep switching outputs and the exposed pad away from sensitive audio inputs, and verify the recommended output filters against speaker impedance and crossover requirements.
おすすめ
Digital Audio Speaker Power Module
For a dedicated digital speaker power module, the TAS5102DAD provides a 2-channel PWM-input interface and 20-W stereo output capability. It is appropriate when the module receives PWM audio directly from a DAC or audio processor rather than conventional analog line-level signals. The implementation needs the manufacturer-specified differential output inductors and capacitors, input filtering, bypass capacitors, and thermal land pattern. Because the device is a power stage rather than a signal converter, upstream components determine the audio format and volume. Evaluate channel synchronization, idle behavior, and EMI at the final system level using the exact filter and PCB implementation.
おすすめ
Portable Powered Speaker
The TAS5102DAD can serve as the stereo power stage in a portable powered speaker powered from a boosted system rail within its 8-V to 23-V operating range. The Class-D output architecture provides a path to high output power from a compact package, while the exposed thermal pad provides a practical route for heat removal from the PCB. Battery systems must include headroom for converter ripple, transient response, and speaker load variation. The 0°C to 70°C specified operating range should be checked against the product’s environmental requirements. If the enclosure limits heat dissipation, reduce output or add a heatsink rather than relying on nominal amplifier power alone.
おすすめ
Compact Consumer Audio System
The TAS5102DAD is appropriate for compact consumer audio products that receive PWM audio and drive two 8-ohm speakers. Its stated 20-W stereo output, 8-V to 23-V supply range, and 32-pin thermally enhanced package provide a straightforward implementation path for powered speakers, auxiliary audio products, and small entertainment systems. The manufacturer’s greater than 100-dB A-weighted SNR specification is useful for low-level audio performance, while the less-than-0.1% THD+N rating applies at the defined 1-W condition. Reproduce the specified output-filter and exposed-pad layouts, provide clean supply bypassing, and confirm both acoustic output and enclosure temperature during prototype validation.
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: TAS5102DAD — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
設計ノート
Plan the PCB thermal path before committing to continuous high-power operation. The manufacturer’s 18-W-per-channel point at 18 V into 8 ohms requires a heatsink, while the DAD package relies on its exposed pad for thermal conduction. Use the recommended land pattern, minimize thermal resistance through both sides of the board, provide plated vias as specified, and reserve mounting area for a heatsink if the enclosure cannot remove the calculated heat. Validate the hottest output condition rather than relying on an average-power estimate.
Follow the manufacturer’s PCB layout for power, ground, PWM inputs, differential outputs, and bypass components. Keep switching-node copper and output-filter inductors away from low-level audio and control paths. Place input and output capacitors at the specified locations with short, low-inductance connections, and use the exposed-pad connection both for heat transfer and electrical return as directed by the datasheet. Treat the complete output-filter network as part of the EMI-critical layout because its current and voltage can exceed values present at the speaker terminals.
Do not select the TAS5102DAD as though it accepts analog audio directly. It is a PWM-input power stage, so the source chain must generate compatible PWM signals. Also avoid mixing the 20-W family rating with the 18-W-per-channel test condition: the latter specifies 18 V, an 8-ohm BTL load, 10% THD+N, and a heatsink. Check the recommended output inductors and capacitors, exposed-pad connection, supply decoupling, and thermal hardware against the exact manufacturer schematic before release.
コンプライアンス情報
The manufacturer specifies a 0°C to 70°C operating range for the commercial TAS5102DAD. RoHS, REACH, lead-free, halogen-free, and conflict-minerals classifications require confirmation from current Texas Instruments compliance documentation.
