PCM5101PW - 106dB Stereo DAC, 2Vrms | Texas Instruments
MPN： PCM5101PW ✗ 停產PCM5101PW 概覽
An audio DAC is a signal-conversion integrated circuit that reconstructs a continuous analog output from digital audio samples. The PCM5101 belongs to the DAC hierarchy within audio interface and data-converter ICs. Its integrated digital filtering, low-noise architecture, and DirectPath-style output stage are intended to simplify the analog output stage while preserving low out-of-band noise.
The PCM5101 supports 16-, 24-, and 32-bit PCM data and a maximum sample rate of 384 kHz. It offers selectable digital-filter latency, allowing system designers to balance responsiveness against out-of-band noise reduction. The manufacturer describes the device as a 106 dB stereo DAC with 2 Vrms output and an integrated audio PLL, which supports clock generation for digital-to-analog conversion from a serial PCM interface.
The 2 Vrms output level can drive line-level audio paths without requiring an external output-voltage amplifier when the downstream load and impedance are appropriate. Its internal negative charge pump supports pop-free operation without external DC-blocking capacitors. The integrated PLL also reduces dependence on a separate audio clock source when the host interface supplies a suitable reference clock.
Typical uses include digital audio players, USB and network audio equipment, home-theater audio paths, active speakers, soundbars, and embedded multimedia systems. The converter can also serve as the output stage of a mixed-signal audio product where a digital audio stream must become a line-level analog signal. Care is needed to preserve output quality through correct grounding, filtering, and routing.
For layout, place input, output, and decoupling connections directly adjacent to their associated pins, and maintain a quiet analog return path that is not shared with high-current digital return currents. Verify the external clock topology, digital interface levels, and output load against the manufacturer datasheet. The 20-pin TSSOP package also makes thermal checking and assembly planning important during PCB layout.
This product overview combines the exact ordering information, converter capabilities, package details, lifecycle status, and design trade-offs needed to evaluate PCM5101PW. It also organizes drop-in family alternatives, application guidance, comparison parameters, and practical implementation notes so engineers can move from part selection to board-level implementation with fewer manual cross-checks.
直接替換替代品，適用於 PCM5101PW — 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。
此系列的變體
與下列產品可直接替換的同系列型號： PCM5101PW （相同外形與佔位） — 差異在於 Dynamic Range, Package, Output Voltage, Digital Interface, Operating Temperature.
PCM5101A
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PCM5102APWR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PCM5100A
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PCM5102APWR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PCM5100
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PCM5101PW 最大額定值與電氣特性
| Converter Type | Stereo audio digital-to-analog converter |
| Dynamic Range | 106 dB |
| 輸出電壓 | 2 Vrms |
| PCM Word Length | 16 bit, 24 bit, 32 bit |
| Maximum Sample Rate | 384 kHz |
| Digital Interface | Serial PCM |
| Integrated Clock Feature | Integrated audio PLL |
| 供應電壓 | 3.3 V |
| Number of DAC Outputs | 2 channels |
| 工作溫度 | -25 °C to +85 °C |
| 封裝 | 20-pin TSSOP (PW) |
| Package Width | 4.40 mm |
| Terminal Pitch | 0.65 mm |
| Number of Terminals | 20 |
| 安裝類型 | Surface mount |
| Packaging | Bulk |
| Peak Reflow Temperature | 260 °C |
| DC-Blocking Capacitors | Not required |
| Negative Charge Pump | Integrated |
PCM5101PW 4.40 mm 腳位配置指南
PCM5101PW（4.40 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： PCM5101PW.
請參閱 資料表 以查看完整腳位配置。
典型應用
PCM5101PW 適用於 6 應用s: USB Audio Player, Network Audio Receiver, Home-Theater Audio DAC, Active Speaker USB Input, Digital Audio Recording and Playback, Multimedia Embedded System.
USB Audio Player
The PCM5101PW is well suited to a USB-audio player because it accepts 16-, 24-, or 32-bit serial PCM data and supports sample rates up to 384 kHz. Its 106 dB dynamic range provides useful noise headroom for high-resolution playback, while the 2 Vrms stereo outputs feed a line input or an external headphone or power amplifier. The integrated audio PLL helps organize the conversion clock. The host USB controller must still provide compatible PCM levels, a valid master clock when required, and a reset or initialization sequence accepted by the PCM5101 interface.
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Network Audio Receiver
A network-audio receiver can use PCM5101PW as the final stereo DAC when decoded PCM data is delivered through an I2S-compatible serial interface. The converter supports 16-, 24-, and 32-bit formats at up to 384 kHz, covering common lossless and high-resolution streaming sources. Its 106 dB dynamic range supports clean line-level output, and the integrated audio PLL reduces clock-distribution complexity. A careful design must isolate the converter's analog return path from Ethernet magnetics, switching supplies, and digital processor currents to preserve the available noise performance.
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Home-Theater Audio DAC
PCM5101PW suits the stereo line-output stage of a home-theater receiver or soundbar because it combines 106 dB dynamic range with 2 Vrms outputs and integrated filtering. The converter can reconstruct 16-, 24-, or 32-bit PCM audio at rates up to 384 kHz, making it appropriate for movie, television, and multichannel-source audio paths that have already been downmixed to stereo. Its pop-free operating concept and integrated negative charge pump simplify the output network, although channel routing, volume control, and final power amplification remain external functions.
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Active Speaker USB Input
The PCM5101PW can provide the digital-to-analog conversion stage for an active speaker with a USB source. Its 2 Vrms output is appropriate for driving the input of a separate power amplifier rather than a speaker directly, and its 106 dB dynamic range preserves noise headroom for music playback. The integrated audio PLL supports clock organization within the converter, while selectable digital-filter latency allows the system designer to balance responsiveness and out-of-band noise. USB ground, power, and signal routing must be designed to prevent digital noise from entering the analog output.
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Digital Audio Recording and Playback
A combined recording and playback product can place PCM5101PW on the playback side while using a separate high-resolution ADC on the capture side. The DAC's 16-, 24-, and 32-bit PCM input and 384 kHz maximum rate support common professional and consumer audio formats, while 106 dB dynamic range and 2 Vrms output provide a useful line-level playback stage. The 20-pin TSSOP package saves board area, but placement near the analog output connector and isolation from ADC clocking and switching circuitry remain critical to preserve performance.
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Multimedia Embedded System
PCM5101PW fits an embedded multimedia appliance that must convert decoded digital audio into a stereo analog signal. Its 3.3 V supply, 20-pin TSSOP package, and support for 16-, 24-, and 32-bit PCM data simplify integration around embedded processors. The integrated audio PLL and selectable digital filtering support deterministic clock and latency planning, while the 2 Vrms output can feed an amplifier, mixer, or connector. The implementation should keep analog traces short and maintain a continuous ground reference beneath the converter's analog return connections.
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推薦產品摘要
工程參考資料，適用於 PCM5101PW — 比較、設計指引及合規資訊。
選型指南
PCM5101A is the closest functional choice when the same 106 dB dynamic range and TSSOP-20 platform are required. PCM5102A offers 112 dB dynamic range and may suit designs prioritizing higher noise headroom, but its filter-latency behavior must be checked against the system timing. PCM5100A and PCM5100 provide a 100 dB-class option, a 6 dB reduction relative to PCM5101PW, which can be acceptable when noise margin is less demanding. Verify pin functions, clocking, filter modes, qualification requirements, lifecycle status, and production continuity before approving any substitution.
與替代品比較
| 參數 | 本產品 | PCM5101A | PCM5102A | PCM5100A | PCM5102 | PCM5100 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) |
| Dynamic Range | 106 dB | 106 dB | 112 dB | 100 dB | 112 dB | 100 dB |
| Output Voltage | 2 Vrms | 2 Vrms | 2 Vrms | 2 Vrms | 2 Vrms | 2 Vrms |
| Maximum Sample Rate | 384 kHz | 384 kHz | 384 kHz | 384 kHz | 384 kHz | 384 kHz |
| Digital Interface | Serial PCM | Serial PCM | Serial PCM | Serial PCM | Serial PCM | Serial PCM |
| Integrated Audio PLL | Yes | Yes | Yes | Yes | Yes | Yes |
| Digital Filter Latency | Selectable | Selectable | Selectable | Selectable | Selectable | Selectable |
| DC-Blocking Capacitors | Not required | Not required | Not required | Not required | Not required | Not required |
主要差異化特點
- Closest same-family performance match (對比PCM5101A)
- Higher dynamic-range family option (對比PCM5102A)
- Lower-cost sensitivity in the PCM510x family (對比PCM5100A)
設計說明
Place the supply-decoupling components directly beside the PCM5101PW supply and ground pins, and route analog outputs away from digital clock and data traces. The 20-pin TSSOP (PW) package has a 0.65 mm terminal pitch, so conservative fanout and a clean ground reference improve assembly yield and reduce return-path inductance. Follow the exact capacitor values, placement, and ground topology shown in the manufacturer PCM5101 datasheet, Rev. B, rather than substituting a generic high-frequency decoupling pattern.
Keep the PCM5101PW analog output paths short, impedance-controlled, and surrounded by a continuous ground plane. Do not route output traces alongside switch-node, Ethernet, or high-speed memory nets because capacitive coupling can degrade the converter's out-of-band noise performance. Use a quiet analog return strategy that avoids sharing return current with digital switching loops, and preserve the manufacturer reference-layout geometry when placing bypass and output-network components.
Treat the 2 Vrms rating as a line-level output specification, not as direct speaker-drive capability. Confirm the supported output impedance, external filtering requirements, digital input levels, master-clock arrangement, and reset behavior against the PCM5101 datasheet, Rev. B. Also verify the selected filter mode: changing the digital-filter latency can affect synchronization, echo cancellation, channel alignment, and the user's perceived audio latency even when the PCB remains unchanged.
Use the manufacturer's clock topology for the selected PCM source and keep serial data, bit clock, and frame-clock timing margins consistent across temperature and supply tolerance. The integrated audio PLL helps with clock generation, but it does not remove the need for a clean reference and correctly configured digital interface. Validate eye timing and output noise on the assembled board because connector, ground, and power-supply layout can influence performance even when the converter itself is within specification.
合規資訊
The PCM5101PW manufacturer ordering page does not identify the component as recommended for new designs. RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status should be confirmed from the current manufacturer product documentation before qualification.
