PCM3000E - 18-Bit Stereo Audio Codec | Texas Instruments
部品番号: PCM3000E ⚠ ラストタイムバイPCM3000E 概要
An audio codec is a mixed-signal interface IC that converts between digital audio data and analog voltage signals. In the signal-chain hierarchy, the PCM3000E sits between an audio signal source or microphone front end and a digital audio processor, microphone preamplifier, and analog output amplifier. Its ADC path digitizes stereo analog inputs, while its DAC path reconstructs stereo audio from serial digital data. The integrated converters make it useful in cost-sensitive consumer equipment requiring more functionality than a basic interface controller.
Key features include 18-bit ADC and DAC resolution, stereo operation, single-ended analog inputs and outputs, and 64-times ADC oversampling. The DAC section uses an 8-times oversampling digital interpolation filter. A serial interface provides a straightforward connection to digital audio processors, while the integrated codec architecture reduces the number of separate converters required in a stereo audio subsystem.
The PCM3000E uses delta-sigma modulation for both conversion paths. Delta-sigma ADCs oversample the analog input and use digital decimation filtering, while the DAC path combines digital interpolation filtering with a single-bit delta-sigma conversion stage. This architecture supports compact, cost-sensitive stereo audio designs and is suited to consumer applications where good performance is required without the complexity of a high-resolution multibit converter.
Typical uses include consumer digital audio equipment, portable audio products, stereo cassette and CD-style playback systems, and other sound-processing products. It can also support multichannel designs when multiple codec channels are combined. For digital signal processing, the codec can work with serial audio processors, microcontrollers, or DSPs capable of handling the required master clock, serial data, and control signals.
Designers should follow the pin-description table in the manufacturer datasheet when assigning signal paths and decoupling. The analog supply, digital supply, clock, serial interface, and analog-output circuitry require careful partitioning to prevent switching activity and digital coupling from degrading audio performance. The 28-pin SSOP package is compact but has a relatively narrow lead pitch, so PCB assembly and inspection require suitable fine-pitch capability.
This page organizes the PCM3000E specifications, pin and package information, product comparisons, engineering guidance, and available drop-in alternatives for faster design review. It also identifies lifecycle and sourcing considerations that should be checked before committing to a new production design.
ドロップイン代替品: PCM3000E — 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。
PCM3000E/2K
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM3000EG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM3001
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM3000E 仕様
| Product Type | Stereo audio codec |
| ADC Resolution | 18 bit |
| DAC Resolution | 18 bit |
| Audio Channels | 2 stereo channels |
| ADC Oversampling Ratio | 64 times |
| DAC Oversampling Ratio | 8 times |
| ADC Digital Decimation Filter | Integrated |
| DAC Digital Interpolation Filter | Integrated, 8-times oversampling |
| Conversion Architecture | Delta-sigma modulation |
| Analog Input Type | Single-ended voltage input |
| Analog Output Type | Single-ended voltage output |
| Digital Interface | Serial |
| パッケージ | 28-pin SSOP |
| Package Family | SSOP surface-mount package |
| Manufacturing Process | CMOS |
PCM3000E ssop surface-mount package ピン配置ガイド
PCM3000E (ssop surface-mount package パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: PCM3000E.
詳細は データシート をご参照ください。
主な用途
PCM3000E の用途: 6 件s: Cost-Sensitive Stereo Consumer Audio, Digital Audio Recording Front End, Stereo Playback and Monitoring, Portable Media Player, Multichannel Audio Expansion, Sound Processing and Interface Module.
Cost-Sensitive Stereo Consumer Audio
The PCM3000E fits consumer audio equipment that needs stereo capture and playback without separate converter ICs. Its integrated 18-bit ADC and DAC, single-ended analog voltage inputs and outputs, and 64-times ADC oversampling provide the fundamental signal chain in one 28-pin SSOP package. The delta-sigma conversion approach and 8-times DAC interpolation filter support compact product designs while reducing external converter count. Engineers should verify the required sample rate, master-clock arrangement, output loading, and analog headroom against the target product specification.
おすすめ
Digital Audio Recording Front End
The PCM3000E can form the stereo analog-to-digital section of a compact recording product. Each single-ended analog input is converted by an 18-bit delta-sigma ADC using 64-times oversampling, followed by an integrated digital decimation filter that prepares the data for serial transmission. This arrangement suits applications in which two channels must be digitized without separate ADC packages. The design must provide compatible clock signals, an appropriate digital interface destination, and analog conditioning suited to the source impedance and required input bandwidth.
おすすめ
Stereo Playback and Monitoring
The PCM3000E supports stereo playback because its DAC path receives serial digital audio and produces two single-ended analog voltage outputs. The 18-bit DAC resolution, 8-times oversampling interpolation filter, and delta-sigma architecture are suitable for compact playback and monitoring equipment. The outputs still require appropriate drive strength and impedance matching, so system designers should evaluate the next amplification stage rather than assuming direct speaker-drive capability. Clock stability and digital-to-analog isolation also affect reproduced audio quality.
おすすめ
Portable Media Player
The PCM3000E is well matched to portable media-player electronics where board area and converter count are important. Its 28-pin SSOP package combines stereo ADC and DAC functions, while the single-ended voltage interfaces support a direct connection to surrounding analog circuitry. The manufacturer identifies the PCM3000/3001 family as suitable for cost-sensitive consumer applications with good performance. Before adoption, verify supply-voltage range, clock-generation cost, idle power, startup behavior, and analog-output drive in the target portable product.
おすすめ
Multichannel Audio Expansion
PCM3000E can be used as one building block in a multichannel audio system because each device provides two stereo conversion channels in a single package. Multiple codec instances can support additional recording or playback channels when the host processor can accommodate the required serial interfaces and clocking. Because each codec adds its own digital data, control, power, and decoupling requirements, designers should plan clock distribution and address-space allocation before populating multiple devices. Analog routing must also prevent channel-to-channel crosstalk.
おすすめ
Sound Processing and Interface Module
PCM3000E can serve as the conversion boundary in a modular digital sound-processing system. The serial digital interface allows a host DSP, microcontroller, or other audio engine to exchange stereo samples with the integrated converters, while the analog side provides conventional voltage inputs and outputs. Its 18-bit ADC and DAC paths are useful when the module must both capture and reproduce sound. System partitioning should keep high-current digital and clock signals away from sensitive analog pins, and the host must support the codec's required clock and data format.
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: PCM3000E — 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 | PCM3000E/2K | PCM3000EG4 | PCM3001 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP |
| Product Type | Stereo audio codec | Stereo audio codec | Stereo audio codec | Stereo audio codec |
| ADC Resolution | 18 bit | 18 bit | 18 bit | 18 bit |
| DAC Resolution | 18 bit | 18 bit | 18 bit | 18 bit |
| ADC Oversampling Ratio | 64 times | 64 times | 64 times | 64 times |
| DAC Oversampling Ratio | 8 times | 8 times | 8 times | 8 times |
| Analog Input Type | Single-ended voltage input | Single-ended voltage input | Single-ended voltage input | Single-ended voltage input |
| Analog Output Type | Single-ended voltage output | Single-ended voltage output | Single-ended voltage output | Single-ended voltage output |
| Digital Interface | Serial | Serial | Serial | Serial with pin-programmable data formats |
主な差別化要因
- Integrated bidirectional stereo conversion （vs PCM3001)
- Straightforward PCM3000E ordering continuity （vs PCM3000EG4)
- Same core converter configuration （vs PCM3000E/2K)
設計ノート
Partition the PCB into analog and digital regions around the codec. Place the manufacturer-recommended bypass capacitors at their associated supply pins with short, low-inductance traces, and keep the exposed pad-free SSOP pin connections away from clock and serial-data routing. Route the analog input and output paths away from digital clocks and switching nodes to reduce crosstalk into the 18-bit conversion paths.
Treat master-clock and serial-interface traces as a matched group because clock and data timing directly affect the delta-sigma conversion interface. Follow the manufacturer recommendations for trace length, grounding, and return paths, and avoid routing these signals across split ground-plane boundaries. If the host processor drives long distances, use a properly engineered buffer or level translator rather than relying on the codec output pins to drive an external cable.
Do not assume PCM3000, PCM3000E, PCM3000E/2K, PCM3000EG4, and PCM3001 are interchangeable solely because they share the codec family. Check the ordering table, pin-programmed data-format behavior, clock requirements, electrical limits, and lifecycle status. For a last-time-buy PCM3000E design, preserve the qualified footprint and BOM in new production releases while confirming remaining supply through a formal quotation.
コンプライアンス情報
The manufacturer product information identifies PCM3000E as a low-cost stereo audio codec for consumer applications but does not establish the requested environmental, conflict-minerals, or automotive qualification fields.
