PCM5142PW - 112dB Stereo Audio DAC | Texas Instruments
MPN: PCM5142PW ✓ فعالPCM5142PW نمای کلی
An audio DAC converts digital PCM audio data into an analog voltage that can drive headphones, line inputs, power amplifiers, or other audio signal chains. The PCM5142 belongs to the stereo DAC family within the broader signal-conversion and data-converter hierarchy. Its DirectPath architecture eliminates the need for external DC-blocking output capacitors, while the integrated negative charge pump supports a single-supply analog implementation.
The principal features include 112 dB dynamic range, 2 V RMS output capability, 16-, 24-, and 32-bit PCM data support, operation up to 384 kHz, selectable digital-filter latency and performance, and a fully programmable miniDSP. Software or hardware configuration gives designers flexibility when implementing playback paths, sample-rate conversion, headphone outputs, powered speakers, home-audio equipment, and other systems requiring a high-performance integrated stereo DAC.
The PCM514x family uses TI advanced segment-DAC architecture to provide low out-of-band noise and direct analog output capability. Integrated negative charge-pump circuitry supports the internal biasing required by the converter, reducing the external component count associated with bipolar output biasing. The absence of DC-blocking capacitors also simplifies the output network and supports direct coupling into suitable downstream circuitry when the system operating point permits it.
Typical applications include USB and network-audio playback, headphone amplifiers, powered-speaker systems, portable consumer equipment, home theater, and digital mixing equipment. PCM5142PW is particularly appropriate when a design requires 32-bit, 384 kHz PCM input, a stereo analog output, programmable digital signal processing, and a compact 28-pin surface-mount implementation.
The main design consideration is validating the digital interface, analog output path, clocking, and power-supply sequencing together. Decoupling capacitors must be placed close to the supply pins, and the PCB layout should minimize loop area and isolate sensitive analog routing from switching circuitry. The datasheet configuration and typical-application circuits should govern the final values and signal-routing implementation.
This page organizes the manufacturer specifications, package information, commercial inquiry path, and application-oriented design guidance. It also distinguishes the PCM5142 from related stereo DAC families and identifies where a replacement candidate may require pinout, register, and feature verification before substitution.
جایگزین‌های drop-in برای PCM5142PW — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PCM5142PW (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Dynamic Range, Digital Interface, Product Type.
PCM5102APWR
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PCM5142PW حداکثر مقادیر مجاز و مشخصات الکتریکی
| Device Type | Stereo audio digital-to-analog converter |
| Dynamic Range | 112 dB |
| Maximum PCM Sampling Rate | 384 kHz |
| Supported PCM Word Lengths | 16 bit, 24 bit, 32 bit |
| Analog Output | 2 V RMS |
| Output Architecture | DirectPath |
| Digital Signal Processor | Fully programmable miniDSP |
| Digital Interface | PCM interface |
| Supply Voltage Range | 3 V to 3.6 V |
| Number of Audio Channels | 2 channels |
| بسته‌بندی | 28-pin TSSOP (PW) |
| نوع نصب | Surface mount |
| DC-Blocking Output Capacitors | Not required |
| Charge Pump | Integrated negative charge pump |
| Configuration Method | Software or hardware configuration |
| Digital Filter | Selectable latency and performance |
راهنمای پیکربندی پین PCM5142PW 28-pin tssop (pw)
پیکربندی پین برای PCM5142PW (پکیج 28-pin tssop (pw)). این قطعه آنالوگ دارای پین‌های ورودی، خروجی و تغذیه است. برای پیکربندی‌های پین offset null، جبران‌سازی و فعال‌سازی به دیتاشیت سازنده مراجعه کنید. ایده‌آل برای مدارهای شرطی‌سازی سیگنال و تقویت‌کننده.
داده پین‌آوت تفصیلی موجود نیست برای PCM5142PW.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
PCM5142PW مناسب است برای 6 کاربردs: USB and Network Audio Playback, Headphone Amplifier Front End, Powered Speaker Audio Module, Home Theater and AV Processor, Portable Digital Audio Product, Digital Mixing and Signal Processing.
USB and Network Audio Playback
PCM5142PW fits a high-resolution digital playback path because it accepts 16-, 24-, and 32-bit PCM data at rates up to 384 kHz. The device can be positioned at the boundary between a digital audio transport and an analog headphone or line-output stage. Its 112 dB dynamic range preserves wide program dynamics, while the fully programmable miniDSP allows channel processing or filtering without loading the host processor. The design must provide a compatible PCM interface, stable clocking, low-noise supply rails, and an analog stage that accepts the DirectPath output operating point.
Headphone Amplifier Front End
PCM5142PW can serve as the stereo DAC preceding a headphone amplifier in portable and premium consumer audio products. Its 2 V RMS DirectPath output is intended to provide a clean analog signal without requiring DC-blocking capacitors, while 112 dB dynamic range supports high-fidelity playback. The programmable miniDSP can implement product-specific attenuation or signal processing. Designers should verify the converter output bias against the headphone amplifier input, maintain short analog traces, and keep clock and switching-node noise away from the output path.
Powered Speaker Audio Module
A compact powered-speaker module can use PCM5142PW to convert a digital audio stream into a stereo analog signal suitable for a power-amplifier stage. The 32-bit PCM interface and 384 kHz maximum rate support high-resolution source handling, and the integrated negative charge pump simplifies single-supply operation. The 28-pin TSSOP package permits a compact converter section, but layout must account for simultaneous switching and analog activity. Verify amplifier input impedance, gain, DC offset, and output-current requirements before integration.
Home Theater and AV Processor
PCM5142PW is appropriate for the stereo analog output section of a home-theater or audiovisual processor requiring high dynamic range and flexible digital processing. Its 112 dB dynamic range supports low-distortion reconstruction of movie and music content, and the programmable miniDSP can implement channel-specific filtering or attenuation. Because the PCM5142PW provides a stereo rather than multichannel DAC, systems with surround channels will need additional converter channels. The PCB should isolate the digital interface and clock routing from the sensitive DirectPath analog outputs.
Portable Digital Audio Product
PCM5142PW can support a portable digital-audio product that combines a modern application processor with stereo analog output. Supporting up to 384 kHz PCM data allows the product to take advantage of high-resolution content, while the miniDSP can perform selected processing close to the converter. Its 28-pin TSSOP package supports compact board layouts, but careful partitioning is needed between processor I/O, power conversion, and the analog output stage. Validate battery-derived supply behavior, startup sequencing, and the final amplifier connection across the complete product temperature range.
Digital Mixing and Signal Processing
PCM5142PW can serve as the final stereo conversion stage in a compact digital mixer or standalone playback processor. The fully programmable miniDSP enables product-specific attenuation, filtering, or other processing before the signal reaches the analog output. Its 32-bit PCM interface and 384 kHz capability are useful when the upstream processor works with high-resolution data, and the 112 dB dynamic range supports clean reconstruction. Validate register configuration, clock ratios, channel mapping, and mixer latency before synchronizing multiple conversion or processing domains.
داده‌های مرجع مهندسی برای PCM5142PW — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PCM5102APWR |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 28-pin TSSOP (PW) | 28-pin TSSOP |
| Device Type | Stereo audio DAC | Stereo audio DAC |
| PCM Resolution | 16 bit, 24 bit, 32 bit | 32 bit |
تفاوت‌های کلیدی
- Higher documented dynamic range (در مقابلPCM5102APWR)
- Integrated programmable audio processing (در مقابلPCM5102APWR)
- High-resolution PCM capability (در مقابلPCM5102APWR)
- DirectPath output system (در مقابلPCM5102APWR)
یادداشت‌های طراحی
Place the required bypass capacitors directly beside the PCM5142PW supply pins and keep the high-frequency return path short and continuous. Treat the integrated negative charge-pump pins as dedicated layout-sensitive nodes and reproduce the manufacturer’s recommended connection exactly. A compact loop reduces supply impedance during output transitions, while separating analog output traces from digital clocks and switching-node copper helps preserve the device’s low-noise performance.
Route the stereo analog outputs away from the PCM interface, clock signals, charge-pump area, and power-converter nodes. Maintain a consistent reference plane beneath the analog section and avoid sharing narrow return paths with switching currents. Because DirectPath output removes the usual DC-blocking capacitor stage, validate the downstream amplifier’s DC bias and input configuration as part of the layout review rather than treating the analog output as an ordinary AC-coupled source.
Confirm the PCM clock relationship, supported sample rate, data format, and channel alignment before configuring the converter. The 384 kHz capability is useful for high-resolution audio, but the source processor and digital transport must generate compatible timing. Review setup and hold requirements, signal levels, and grounding in the PCM5142 datasheet, then validate output channel mapping and miniDSP latency in the complete playback chain.
Do not treat a matching TSSOP-28 outline as proof that another DAC is interchangeable. Compare every power, ground, clock, PCM, control, charge-pump, and analog-output pin, then check the register map, digital-filter behavior, output architecture, and electrical limits. For a PCM5102APWR replacement candidate, perform bit-level interface tests and listen for or measure DC offset, channel mismatch, mute behavior, and startup transients before production release.
اطلاعات انطباق
The available manufacturer product descriptions do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Verify current declarations on the Texas Instruments product page before procurement or regulatory use.