PCM56U/1K - 16-Bit Audio DAC | Texas Instruments | SOIC-16
部品番号: PCM56U/1K ✗ 生産終了PCM56U/1K 概要
The PCM56 is a digital-to-analog converter, or DAC, within the broader integrated-circuit hierarchy that includes ADC/DAC converters, data-conversion ICs, and signal-processing semiconductors. Its function is to convert serial digital audio samples into a continuous analog voltage. The PCM56U/1K accepts a serial input format and uses dual power supplies ranging from ±5 V to ±12 V. The converter is factory-trimmed and tested for critical specifications, including total harmonic distortion, differential linearity, bipolar zero error, and settling-time effects on accuracy.
Important K-grade characteristics include -92 dB maximum THD at full-scale input and -74 dB maximum THD at -20 dB input. The device also provides 96 dB dynamic range and requires no external components for its core conversion function. These characteristics make it suitable for professional audio equipment, instrumentation, digital audio synthesis, laboratory signal sources, and other systems where a low-noise analog output is required. The monolithic implementation reduces the number of external precision components required around the converter.
The PCM56U/1K operates from dual supplies that can range from ±5 V to ±12 V, while the verified distributor listing identifies a 4.75 V to 13.2 V supply indication. The 16-pin SOIC package supports conventional surface-mount PCB assembly. The device is identified by DigiKey as a 16-bit PCM audio DAC in a 16-SOIC package, and Mouser lists the PCM56U/1K as a 16-bit monolithic audio DAC. The Texas Instruments product page and datasheet remain the authoritative references for ordering information, pin functions, electrical limits, and application details.
When designing around the PCM56U/1K, verify the required serial interface timing, analog output implementation, supply sequencing, and signal-ground arrangement against the manufacturer datasheet. The dual-supply architecture and internal reference are important system-level considerations. This page consolidates distributor availability information, manufacturer documentation, package details, comparison data, and practical design guidance for engineers evaluating the PCM56U/1K.
ドロップイン代替品: PCM56U/1K — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PCM56U/1K （同一形状・フットプリント） — 相違点: Package, Supply Voltage, Data Interface, External Components, Terminal Count.
PCM56U
✅ ドロップイン価格はお問い合わせください
データシートを見る →PCM56UG4
✅ ドロップイン価格はお問い合わせください
データシートを見る →PCM56U/1KG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM56U/1K 最大定格＆電気的特性
| Converter Type | Series-input monolithic digital-to-analog converter |
| 分解能 | 16 bit |
| Monotonicity | 15 bit typical, 0.001% of FSR typical differential linearity error |
| Dynamic Range | 96 dB |
| THD, Full-Scale Input | -92 dB maximum, K grade |
| THD, -20 dB Input | -74 dB maximum, K grade |
| 電源電圧 | ±5 V to ±12 V |
| Distributor Supply Indication | 4.75 V to 13.2 V |
| Input Format | Serial input |
| 出力タイプ | Monolithic DAC with internal output operational amplifier |
| Internal Reference | Stable, low-noise internal zener voltage reference |
| Internal Elements | High-speed current switches, resistor ladder network, and output operational amplifier |
| External Components | No external components required for core conversion function |
| Factory Calibration | Factory-trimmed and tested for critical key specifications |
| パッケージ | 16-pin SOIC |
| Package Pin Count | 16 pins |
| 実装タイプ | Surface mount |
| Terminal Form | Gull wing |
PCM56U/1K 16 pins ピン配置ガイド
PCM56U/1K (16 pins 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: PCM56U/1K.
詳細は データシート をご参照ください。
主な用途
PCM56U/1K の用途: 6 件s: Professional Audio Signal Generation, Digital Audio Playback, Precision Instrumentation, Industrial Control Signal Output, Broadcast and Communication Audio, Laboratory DAC and Function Generator.
Professional Audio Signal Generation
The PCM56U/1K fits professional audio signal generation because it combines 16-bit resolution with 96 dB dynamic range and K-grade THD of -92 dB maximum at full-scale input. It can be placed after a digital audio source to produce a precision analog output for test equipment, mixing systems, or signal-monitoring products. Its internal zener reference, current switches, resistor ladder, and output operational amplifier reduce the external precision circuitry required for conversion. The principal design consideration is preserving clean dual supplies and a low-noise ground reference while keeping the serial interface timing compliant with the manufacturer specification.
おすすめ
Digital Audio Playback
The PCM56U/1K is suitable for digital audio playback chains that require a high-resolution analog reconstruction stage. Its 16-bit converter resolution preserves the nominal source format, while the documented -92 dB maximum K-grade THD at full-scale and -74 dB maximum at -20 dB provide objective distortion limits for playback design. The serial input accepts the digital word stream, and the integrated output amplifier provides a self-contained conversion function. Designers should account for the required ±5 V to ±12 V dual supplies, verify interface timing, and select suitable output coupling or filtering according to the application.
おすすめ
Precision Instrumentation
The PCM56U/1K can generate controlled analog outputs in laboratory and industrial instrumentation when a precise digital-to-analog conversion stage is needed. The 16-bit resolution and 96 dB dynamic range are useful for representing calibration values, waveform commands, or synthesized test signals. Its monolithic design includes the reference, switching network, resistor ladder, and output amplifier, which simplifies the core converter layout. System engineers should ensure stable positive and negative supplies, provide appropriate decoupling according to the manufacturer datasheet, and route analog and digital return paths carefully to avoid degrading the usable conversion accuracy.
おすすめ
Industrial Control Signal Output
The PCM56U/1K can be used as a high-resolution command-output stage in industrial control and test systems when the actuator or measurement interface requires an analog voltage derived from a digital value. Its 16-bit conversion capability provides more levels than an 8-bit or 12-bit interface, while the factory-trimmed converter is tested for critical specifications such as linearity, bipolar zero error, and settling-time effects. The implementation must account for dual-rail power, grounding, and output settling. The 16-pin SOIC package also allows reuse of an existing audio-DAC layout when system requirements remain electrically compatible.
おすすめ
Broadcast and Communication Audio
The PCM56U/1K can support audio conversion subsystems in broadcast, communication, and monitoring equipment that require documented distortion and dynamic-range performance. The K-grade limits of -92 dB maximum THD at full-scale input and 96 dB dynamic range make it appropriate for precision analog audio generation stages. The serial interface allows a digital processor to provide sample data while the monolithic converter handles reference generation, current switching, ladder conversion, and output amplification. Critical integration work includes separating noisy digital returns from the analog output reference, stabilizing both power rails, and validating the serial-data timing across operating conditions.
おすすめ
Laboratory DAC and Function Generator
The PCM56U/1K is applicable to laboratory digital-to-analog and function-generator designs where a controlled analog waveform is required. Its 16-bit resolution supports finely stepped output levels, while the 96 dB dynamic range and low K-grade distortion provide useful performance for bench instrumentation and automated test systems. The converter's internal reference and output amplifier allow the core signal path to remain compact, but external circuitry may still be needed for scaling, offset, filtering, or output protection. Designers should evaluate settling time and differential linearity at the operating signal level and use the manufacturer datasheet as the final electrical reference.
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: PCM56U/1K — 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 | PCM56U | PCM56UG4 | PCM56U/1KG4 |
|---|---|---|---|---|
| Package | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Converter Type | Series-input monolithic DAC | Series-input monolithic DAC | 16-bit audio DAC | 16-bit audio DAC |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
主な差別化要因
- Documented K-grade distortion performance （vs PCM56U)
- Direct same-family package compatibility （vs PCM56UG4)
- Self-contained monolithic conversion function （vs PCM56U/1KG4)
設計ノート
The PCM56U/1K requires positive and negative power supplies in the documented ±5 V to ±12 V range. Provide separate, stable rails for the analog conversion section and keep their return paths coordinated with the circuit ground reference. Check the manufacturer datasheet for the exact absolute maximum ratings, recommended operating range, and power-dissipation limits before selecting regulators or specifying the board power budget. Because the available search snippets do not include decoupling values, do not infer capacitor sizes from generic guidance.
Keep the serial-data route short and isolate it from the analog output path to reduce corruption of the 16-bit conversion word. Use a continuous ground reference where possible and avoid routing return currents from digital processors beneath the converter's sensitive signal area. The PCM56 integrates its reference, switches, resistor ladder, and output amplifier, but external layout still affects the resulting noise and distortion. Final component placement, grounding, and bypass arrangement should follow the layout guidance in the Texas Instruments PCM56 datasheet.
Treat the serial interface as a timing-sensitive digital connection and verify input setup, hold, and clock relationships against the manufacturer specification. The converter's factory trimming addresses internal accuracy, but it does not compensate for a violated digital interface or a noisy reference environment. In audio reconstruction applications, evaluate output settling and distortion at the actual signal level rather than relying only on nominal resolution. The documented 96 dB dynamic range and -92 dB maximum K-grade THD should be used as comparison points, not as guarantees for an incomplete external signal path.
コンプライアンス情報
The supplied verified results do not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. AEC-Q100 is not applicable to this commercial audio converter based on the supplied data.
