PCM1739E - 24-Bit 192kHz Stereo Audio DAC | Texas Instruments
部品番号: PCM1739E ✓ 生産中PCM1739E 概要
A digital-to-analog converter, or DAC, is a semiconductor that transforms digital audio samples into continuous analog voltage signals. In the signal-chain hierarchy, the PCM1739E belongs to the ADC/DAC class within interface ICs, where it follows the digital audio source and precedes an analog output amplifier, headphone driver, mixer, or loudspeaker system. Its delta-sigma architecture and multi-level quantization are intended to reduce quantization noise while preserving high-resolution audio data.
The verified product information identifies a 24-bit resolution, maximum sampling rate of 192kHz, 105dB typical SNR, and stereo output configuration. A related manufacturer datasheet listing gives 106dB typical dynamic range, 105dB typical SNR, 0.0015% typical THD+N with a 5V supply, 3.1Vpk-pk typical full-scale output, 4-times and 8-times oversampling, a 0.454fS digital-filter passband, and -82dB stopband attenuation.
PCM1739E is appropriate for consumer-audio equipment, USB and digital-audio interface boards, active speakers, compact home-theater systems, and audio conversion modules requiring simultaneous left and right outputs. Its 192kHz sampling capability supports high-resolution source material, while the stated SNR and distortion figures establish the signal-quality baseline for the analog output stage.
Designers should treat the DAC output as a line-level signal requiring suitable analog amplification and output coupling. The manufacturer datasheet indicates analog testing with a load of 5kΩ or larger and an AC-coupled output. Decoupling, grounding, clock-interface layout, and output-filter implementation therefore remain important to preserving the converter's measured performance.
This page combines the verified Texas Instruments product information, distributor listings, and cross-reference data with practical selection guidance. It also distinguishes documented drop-in candidates from merely similar audio converters, helping engineers evaluate replacement risk before modifying an existing 28-pin SSOP PCB.
ドロップイン代替品: PCM1739E — 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。
AD1855JRSZ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
WM8716SEDS/V
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD1852JRSZRL
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM1739E 最大定格＆電気的特性
| Converter Type | Enhanced multi-level delta-sigma audio DAC |
| 分解能 | 24 bit |
| Maximum Sampling Rate | 192kHz |
| Number of Channels | 2 channels |
| Dynamic Range | 106dB typical at 5V |
| Signal-to-Noise Ratio | 105dB typical at 5V |
| Total Harmonic Distortion plus Noise | 0.0015% typical at 5V |
| Full-Scale Output | 3.1Vpk-pk typical |
| Digital Filter Passband | 0.454fS |
| Digital Filter Stopband | 0.546fS |
| Digital Filter Stopband Attenuation | -82dB |
| Oversampling Ratio | 4x or 8x |
| Digital Audio Interface | I2S |
| パッケージ | 28-pin SSOP |
| 実装タイプ | Surface mount |
| Manufacturer | Texas Instruments |
| RoHS ステータス | Request verification |
| Halogen-Free Status | Compliant |
| Estimated End-of-Life Date | 2028 |
PCM1739E 28-pin ssop ピン配置ガイド
PCM1739E (28-pin ssop 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: PCM1739E.
詳細は データシート をご参照ください。
主な用途
PCM1739E の用途: 6 件s: USB Audio Interface, High-Resolution Active Speaker, Digital Audio Player, Home Theater Audio Converter, Professional Audio Monitoring, Audio Recording and Playback Module.
USB Audio Interface
The PCM1739E is suitable for a two-channel USB-audio interface because it accepts digital audio through its I2S interface and converts it into left and right analog outputs. Its 24-bit resolution and 192kHz maximum sampling rate support high-resolution playback files, while the verified 105dB typical SNR and 0.0015% typical THD+N provide useful converter specifications for a precision interface. Place stable supply and ground planes beneath the DAC, keep the digital audio route away from the analog outputs, and follow the manufacturer output-network requirements. The output should feed an appropriate low-noise amplifier rather than a speaker directly.
おすすめ
High-Resolution Active Speaker
The PCM1739E fits an active-speaker input stage that accepts digital audio and produces analog left and right signals for downstream amplification. Its 192kHz sampling capability accommodates high-resolution digital sources, and its 105dB typical SNR keeps the DAC contribution low relative to many consumer audio systems. The 3.1Vpk-pk typical full-scale output should be checked against the input range of the selected power amplifier. A practical design uses short, balanced analog routes where possible, a clean digital ground-to-analog-ground transition, and the documented AC-coupled load arrangement.
おすすめ
Digital Audio Player
The PCM1739E can serve as the final conversion stage in a digital audio player that accepts I2S data and feeds an analog amplifier. Its 24-bit format and 192kHz sampling rate align with high-resolution player designs, while the verified 106dB typical dynamic range and 0.0015% typical THD+N define the converter's signal-integrity target. The DAC's analog output should be referenced correctly to the amplifier's single-ended or differential input architecture. Output filtering, coupling, and grounding should follow the manufacturer reference design to avoid compromising the documented performance.
おすすめ
Home Theater Audio Converter
The PCM1739E is applicable in a two-channel home-theater conversion stage where a digital source requires high-quality left and right analog outputs. Although it is a stereo DAC rather than a surround processor, its 192kHz sampling rate and 105dB typical SNR make it useful for front, preamp, or auxiliary audio channels. The 28-pin SSOP implementation supports compact board layouts, provided the layout preserves the manufacturer's recommended power, grounding, and analog-output arrangements. The selected downstream amplifier must accept the converter's 3.1Vpk-pk typical full-scale output without clipping.
おすすめ
Professional Audio Monitoring
The PCM1739E can be used in a compact monitoring or signal-conversion product that requires two high-resolution analog outputs from an I2S source. Its 105dB typical SNR and 0.0015% typical THD+N are useful when the converter must preserve the dynamic range of upstream studio signals. The verified full-scale output of 3.1Vpk-pk must be matched to the monitor preamplifier input, and the manufacturer's 5kΩ-or-greater AC-coupled load condition should be respected. Careful separation of clock and data traces from analog outputs reduces the chance of degrading converter performance.
おすすめ
Audio Recording and Playback Module
The PCM1739E is appropriate for a combined recording and playback module where an I2S audio processor routes two playback channels through a dedicated DAC. Its 24-bit resolution supports detailed digital playback, while the verified analog figures allow module designers to budget the converter's contribution to the overall signal chain. The module should use separate input and output grounding approaches with a controlled connection point, and the 28-pin SSOP layout should follow the official pin table exactly. Avoid adding unsupported compensation networks that could alter the documented full-scale output.
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: PCM1739E — 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 | AD1855JRSZ | WM8716SEDS/V | AD1852JRSZRL |
|---|---|---|---|---|
| Package | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP |
| Brand | Texas Instruments | Analog Devices | Wolfson Microelectronics | Analog Devices |
主な差別化要因
- Verified high-resolution performance （vs AD1855JRSZ)
- Manufacturer-supported interface documentation （vs WM8716SEDS/V)
- Documented oversampling and filter behavior （vs AD1852JRSZRL)
設計ノート
Use the official PCM1739 datasheet as the authority for the 28-pin SSOP layout. Place input and output decoupling capacitors adjacent to their intended supply pins, keep the I2S clock and data routes short, and route analog outputs away from digital switching nodes. The verified search data identifies the package but does not provide individual pin names, so assigning signals from distributor summaries or third-party diagrams would create avoidable layout errors.
Preserve the documented analog test conditions when evaluating performance: the manufacturer datasheet listing specifies an AC-coupled load of 5kΩ or larger and a 3.1Vpk-pk typical full-scale output. Match the output network and downstream amplifier input accordingly. Incorrect loading, coupling, or grounding can change the observed SNR and THD+N even when the DAC itself is operating correctly.
Do not treat a 28-pin package match as proof of drop-in compatibility. AD1855JRSZ, WM8716SEDS/V, and AD1852JRSZRL appear in verified cross-reference results, but their clock modes, data formats, control pins, filter responses, and output scaling were not supplied. Compare the complete pin tables and digital timing diagrams before modifying a PCB or approving a substitute for production.
コンプライアンス情報
The verified cross-reference listing states that RoHS requires verification and identifies the part as halogen-free compliant. No verified REACH, lead-free, or conflict-minerals statement was supplied. The 2028 date is an estimated end-of-life date reported by the third-party product listing.