TAS5012PFB - Stereo 3.3V Audio PWM Processor | Texas Instruments
MPN： TAS5012PFB ✗ 停產TAS5012PFB 概覽
A true digital audio amplifier separates digital signal processing from power amplification. The TAS5012 accepts a serial PCM audio stream, performs the required digital audio processing, and generates a differential 3.3 V PWM stream. A compatible external power-output device converts that PWM stream into a high-current audio signal capable of driving a loudspeaker load. This architecture reduces analog signal-path distortion while allowing system behavior to be controlled digitally.
Key characteristics include support for two audio channels, a 102 dB dynamic-range specification, and THD+N below 0.06%. The processor supports digital interfaces identified as DSP and I2S, making it suitable for audio systems receiving serial PCM data from a digital source. Its stated power efficiency of 90% into an 8-ohm load describes a complete true digital audio amplifier system using the processor with its compatible PWM power stage, rather than an isolated measurement of the processor alone.
The 24-bit input capability and support for 176.4 kHz and 192 kHz sampling make the TAS5012 suitable for high-resolution consumer audio, CD-rate playback, digital mixing equipment, powered speakers, and automotive audio systems. Its 48-TQFP package provides a practical solution for multichannel digital audio designs where external amplification and digital control are preferred over a conventional analog output amplifier.
Implementation requires careful selection of the companion PWM power device, differential output routing, clocking, digital interface timing, grounding, and decoupling. The processor and output stage must be designed together because their PWM signaling, timing, and load capabilities determine the achievable output power and distortion performance.
This page consolidates the key electrical characteristics, practical applications, package information, sourcing guidance, and same-footprint replacement options for engineers evaluating the TAS5012PFB. It also provides a structured framework for comparing the processor with other true digital audio amplifier signal-processing devices before committing a high-volume PCB design.
直接替換替代品，適用於 TAS5012PFB — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
TAS5012PFBR
✅ 直接替換📋 參考替代品（不在目錄中）
TAS5010PFB
✅ 直接替換聯絡詢價
查看資料表 →TAS5012IPFB
✅ 直接替換📋 參考替代品（不在目錄中）
TAS5012PFB 最大額定值與電氣特性
| Product Type | True Digital Audio Amplifier Signal Processor |
| Audio Channels | 2 channels |
| 工作電源電壓 | 3 V to 3.6 V |
| Dynamic Range | 102 dB |
| Total Harmonic Distortion plus Noise | < 0.06% |
| Input Data Resolution | 24 bit |
| Supported Sampling Rates | 176.4 kHz and 192 kHz |
| Digital Interface | DSP and I2S |
| Processor Function | Audio Signal Processor |
| Output Interface | 3.3 V differential PWM audio stream |
| System Power Efficiency | 90% into an 8 ohm load |
| 工作溫度範圍 | 0 °C to 70 °C |
| 封裝 | 48-TQFP, 7 mm x 7 mm |
| 安裝類型 | Surface Mount |
| Packaging | Tray |
| Supply Category | EAR99 |
| Country of Origin | Taiwan |
TAS5012PFB 48-tqfp, 7 mm x 7 mm 腳位配置指南
TAS5012PFB（48-tqfp, 7 mm x 7 mm 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： TAS5012PFB.
請參閱 資料表 以查看完整腳位配置。
典型應用
TAS5012PFB 適用於 6 應用s: High-Resolution Powered Speaker, Digital Audio Mixer, Consumer Audio Amplifier, Automotive Audio System, Digital Headphone Amplifier, Digital Recording and Playback.
High-Resolution Powered Speaker
The TAS5012PFB fits a high-resolution powered-speaker architecture because it accepts 24-bit PCM audio, supports 176.4 kHz and 192 kHz sampling, and processes two channels digitally. Place the processor between the source and a compatible PWM power-output IC, then route its differential 3.3 V PWM outputs to the external stage. This preserves the digital signal path until power amplification and supports the manufacturer’s stated 90% system efficiency into an 8-ohm load when the complete reference design is followed.
推薦
Digital Audio Mixer
The TAS5012PFB can serve as the digital audio-processing element in a stereo mixer that receives PCM channels from a digital source and drives a compatible PWM output stage. Its two-channel architecture supports balanced stereo processing, while the 102 dB dynamic-range specification provides substantial headroom for high-quality playback. Digital interface timing, clock generation, and grounding remain critical because incorrect serial synchronization can corrupt audio even when the output stage operates correctly.
推薦
Consumer Audio Amplifier
For compact consumer audio products, the TAS5012PFB provides a digital route from the source interface to a loudspeaker power stage without a conventional analog output buffer. Its 48-TQFP package is practical for multi-layer consumer boards, and the processor supports both DSP and I2S source formats. The 3 V to 3.6 V operating range must be respected, while the 0 °C to 70 °C specification suits indoor products rather than harsh uncontrolled environments.
推薦
Automotive Audio System
The TAS5012PFB is identified for automotive-audio applications and can support a digitally processed stereo loudspeaker channel. Its true digital architecture moves signal processing upstream from the power stage and can simplify analog routing while supporting 24-bit source data. However, the stated 0 °C to 70 °C operating range and unknown AEC-Q100 status require confirmation for an actual vehicle platform. Production programs should also address obsolete lifecycle status and long-term supply continuity.
推薦
Digital Headphone Amplifier
The TAS5012PFB can form the signal-processing portion of a digitally controlled headphone amplifier when the chosen external PWM output stage can support the required load and filtering network. Using two PWM outputs preserves independent left and right channels, while digital volume or processing functions can be implemented ahead of the power stage. The design must account for PWM ripple, output-filter component selection, headphone impedance, EMI, and the distinction between system efficiency and processor efficiency.
推薦
Digital Recording and Playback
The TAS5012PFB is applicable to recording-and-playback products that retain a digital audio path from a digital source through processing to a PWM power stage. Its 102 dB dynamic range and THD+N below 0.06% suit high-fidelity playback, while DSP and I2S interfaces provide compatibility with digital converters such as the PCM1725. The implementation should use a low-jitter clock arrangement, controlled layout, and verified interface timing to prevent data or clock errors from affecting the recording path.
推薦
推薦產品摘要
工程參考資料，適用於 TAS5012PFB — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TAS5012PFBR | TAS5010PFB | TAS5012IPFB |
|---|---|---|---|---|
| Package | 48-TQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) | 48-TQFP (7x7) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Type | True Digital Audio Amplifier Signal Processor | True Digital Audio Amplifier Signal Processor | Digital Audio Processor | TAS5012-family Digital Audio Processor |
主要差異化特點
- High-resolution stereo digital processing (對比TAS5010PFB)
- Low total harmonic distortion plus noise (對比TAS5012PFBR)
- Complete digital loudspeaker signal path (對比TAS5558DCA)
- System-level efficiency target (對比TAS5012IPFB)
設計說明
Route the TAS5012PFB clock, serial data, and PWM outputs as short, controlled-impedance nets, especially when operating at 176.4 kHz or 192 kHz. Place input, output, and bypass capacitors close to their associated pins and keep switching return currents confined to the external PWM power stage. Follow the pin-configuration table and application layout in the manufacturer datasheet rather than inferring connections from the package drawing.
Design the 3 V to 3.6 V supply rail for both processor demand and the interface requirements of the companion power-output device. The manufacturer’s 90% efficiency figure applies to the complete true digital audio amplifier system into an 8-ohm load, not to the TAS5012PFB alone. Validate supply ripple, startup behavior, sequencing, and current margin under worst-case audio conditions, and decouple the processor separately from high-current output-stage paths.
Treat digital clocking as a signal-integrity subsystem. Route the master clock and serial audio lines away from PWM outputs and power-stage switching nodes, use a continuous ground reference, and verify timing at the highest supported sampling rate. A clean analog power stage cannot compensate for bit errors, clock jitter, or setup-and-hold violations at the processor inputs.
Do not assume that a component listed as an alternative is a PCB drop-in replacement. TAS5558DCA and TAS5558DCAR appear in the alternative-part list, but the available information does not establish a matching 48-TQFP footprint or pin-to-pin assignments. Confirm the package dimensions, pin names, control interface, PWM outputs, and external power-stage requirements in the manufacturer datasheet before approving a substitution.
Most system heat is generated in the external PWM power-output device rather than in the TAS5012PFB processor, but the complete assembly still requires thermal review. Estimate power loss in the power stage using its conduction and switching losses at maximum channel output, then verify the exposed-pad and board-copper treatment required by the manufacturer layout. Check the complete system at the highest ambient temperature expected by the enclosure.
合規資訊
The product record identifies the device as halogen-free compliant and lists EAR99 as its export classification. RoHS, REACH, lead-free, conflict-minerals, and AEC-Q100 status require confirmation from the current manufacturer declaration or product documentation.
