PCM1738E - 24-Bit 200kHz Stereo Audio DAC | Texas Instruments
部品番号: PCM1738E ✓ 生産中PCM1738E 概要
ドロップイン代替品: PCM1738E — 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。
PCM1738EG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM1738E/2KG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM1738E/2K
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM1738
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM1738E/2KG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM1738E 最大定格＆電気的特性
| Converter Type | Stereo audio digital-to-analog converter (DAC) |
| Number of Channels | 2 channels |
| 分解能 | 24 bit |
| Maximum Sampling Rate | 200 kHz |
| Manufacturer Stated Sampling Rate | 192 kHz |
| Architecture | Advanced segment DAC architecture |
| Supply Voltage Range | 4.75 V to 5.25 V |
| Output Architecture | Balanced current outputs |
| パッケージ | 28-pin SSOP, 5.30 mm width |
| Technology | CMOS monolithic IC |
| Digital Interface | I2S |
| Clock Jitter Tolerance | Improved tolerance to clock jitter |
| Application Category | Audio and multimedia |
| Operating Class | Commercial |
| 実装タイプ | Surface mount |
PCM1738E 28-pin ssop, 5.30 mm width ピン配置ガイド
PCM1738E (28-pin ssop, 5.30 mm width 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: PCM1738E.
詳細は データシート をご参照ください。
主な用途
PCM1738E の用途: 6 件s: High-Resolution Digital Audio Player, Multimedia Audio Conversion, Professional Audio Interface, Broadcast and Network Audio Monitoring, Digital Audio Receiver, Instrumentation and Measurement Audio.
High-Resolution Digital Audio Player
The PCM1738E fits a high-resolution digital audio player because it combines 24-bit conversion, two stereo DAC channels, I2S data input, and sampling support up to 200 kHz. The Texas Instruments PCM1738 family uses an advanced segment DAC architecture with improved tolerance to clock jitter, which is valuable when the player must preserve signal integrity from a digital source through the analog output stage. Its balanced current outputs provide a useful starting point for a balanced audio output network. The designer should account for the 4.75 V to 5.25 V supply requirement and implement the required analog bypass and output-network components close to the converter. Compared with a lower-resolution consumer DAC, the PCM1738E supports higher-resolution digital streams and is intended for applications where audio fidelity and clock behavior are meaningful design priorities.
おすすめ
Multimedia Audio Conversion
PCM1738E is appropriate for multimedia equipment that must convert I2S digital audio into stereo analog signals. Its 24-bit resolution supports detailed reconstruction, while the two-channel architecture aligns with common source, media, and playback subsystems. The 200 kHz maximum sampling-rate listing provides headroom for high-rate audio formats and multimedia content. In a system design, the PCM1738E can sit between an audio processor or receiver and an analog line-output or headphone-driver stage. The 4.75 V to 5.25 V operating range fits a conventional 5 V audio rail. Designers should maintain short digital routes, provide clean analog supply bypassing, and account for the converter's balanced current outputs in the surrounding analog network to avoid introducing avoidable noise or imbalance.
おすすめ
Professional Audio Interface
The PCM1738E can serve as the stereo conversion stage in a professional or semi-professional audio interface because it provides 24-bit stereo DACs and balanced current outputs. These characteristics align with balanced audio signal paths and help separate digital-to-analog conversion from the subsequent line, headphone, or power-amplifier stages. The advanced segment DAC architecture is specifically described by Texas Instruments as providing excellent dynamic performance and improved tolerance to clock jitter, both important in professional monitoring equipment. The PCM1738E should be paired with a clean 5 V analog supply and carefully selected output-network components. Because its verified excerpts do not provide a complete pin table, impedance values, or output compliance data, the engineer should use the manufacturer data sheet to finalize gain, loading, and protection details before release.
おすすめ
Broadcast and Network Audio Monitoring
The PCM1738E is suitable for broadcast, network, or monitoring equipment that accepts digital audio and requires accurate stereo analog reconstruction. Its I2S interface and two-channel architecture match common digital audio backbones, while the 24-bit format and high-rate sampling capability support detailed signal monitoring. Balanced current outputs can simplify integration with balanced monitor-input circuitry. In this application, clock-jitter tolerance is a meaningful performance consideration, and the manufacturer specifically highlights improved tolerance to clock jitter in the PCM1738 architecture. The implementation should keep the I2S and clock traces away from sensitive analog output routing, use local supply bypassing, and verify grounding so that digital switching energy does not dominate the reconstructed audio. The converter's exact output load requirements and reference behavior should be confirmed directly from the current TI data sheet.
おすすめ
Digital Audio Receiver
PCM1738E can be used in a digital audio receiver to create a high-resolution analog output stage from an I2S source. The 24-bit stereo DAC supports high-quality playback from digital transport components, while the SSOP-28 package provides a compact surface-mount implementation for space-conscious receivers. Its balanced current outputs allow the design to use a symmetrical analog path where appropriate, although external resistor and load choices remain application-dependent. The 5 V supply range of 4.75 V to 5.25 V is convenient for receiver boards that already include a regulated 5 V rail. For best results, place the converter close to its analog output network, maintain a continuous ground reference, and separate noisy digital return currents from output-current routing. The design must also comply with the PCM1738E's specified clock and interface requirements from the manufacturer documentation.
おすすめ
Instrumentation and Measurement Audio
The PCM1738E can support instrumentation that requires a controllable stereo audio output for stimulus generation, monitoring, or loopback testing. Its 24-bit resolution and up-to-200-kHz sampling capability provide a high-resolution output path, while I2S allows connection to an FPGA, microcontroller, DSP, or audio controller. The converter's balanced current outputs may help maintain signal integrity in sensitive test equipment when the analog load is designed correctly. In such systems, clock routing and supply cleanliness are central because measurement accuracy can be affected by jitter and ground coupling. The PCM1738E should be powered from a quiet 5 V rail, with input, output, and reference bypass components placed according to the manufacturer layout guidance. Because the supplied verified excerpts do not state the complete output compliance, reference voltage, or pin-level limits, those values must be checked in the official data sheet before defining the analog front end.
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: PCM1738E — 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 | PCM1738EG4 | PCM1738E/2KG4 | PCM1738E/2K | PCM1738 | PCM1738E/2KG4 |
|---|---|---|---|---|---|---|
| Package | SSOP-28 | SSOP-28 | SSOP-28 | SSOP-28 | SSOP-28 | SSOP-28 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Converter Type | Stereo audio DAC | Stereo DAC | Stereo DAC | Stereo DAC | Stereo DAC | Stereo DAC |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit |
主な差別化要因
- High-resolution stereo conversion （vs PCM1738EG4)
- Direct 200 kHz sampling capability （vs PCM1738E/2K)
- Balanced current-output architecture （vs PCM1738)
設計ノート
The verified PCM1738E supply range is 4.75 V to 5.25 V. Provide a quiet 5 V rail for the converter and place the manufacturer-recommended bypass capacitors close to the relevant supply and ground pins. Separate the digital return path from sensitive analog current-output routing so that I2S, clock, and control return currents do not add noise to the reconstructed stereo signal.
Keep the PCM1738E close to the external analog-output network and maintain a continuous ground reference beneath the converter. Route the I2S data, clock, and control signals away from the balanced output components. Because the verified excerpts do not provide the complete pin map, use the current manufacturer data sheet to confirm every bypass, reference, and output-network connection before PCB release.
Clock quality is a major consideration in a 24-bit audio converter. The manufacturer describes the PCM1738 advanced segment DAC architecture as having improved tolerance to clock jitter, but this does not eliminate the need for a clean clock source. Keep clock traces short, provide a continuous return path, and avoid routing the clock adjacent to balanced analog outputs where crosstalk could affect the reconstructed audio.
Do not treat the PCM1738E, PCM1738EG4, PCM1738E/2K, and PCM1738E/2KG4 ordering codes as automatically interchangeable. The supplied comparison data indicates compatible SSOP-28 terminals and packages, but procurement, lifecycle, temperature grade, delivery format, and exact pin-function requirements must still be checked in TI documentation. Also verify the analog load and output-network values, which are not present in the supplied excerpts.
コンプライアンス情報
The supplied verified excerpts do not explicitly state the required compliance status for PCM1738E. One comparison result refers to specialized RoHS details for PCM1738EG4, but that is not sufficient to assign a compliance value to PCM1738E. Consult the current TI product and material-compliance documentation.
