PCM1793DBR - 24-Bit 192kHz Stereo DAC | Texas Instruments
部品番号: PCM1793DBR ✓ 生産中PCM1793DBR 概要
An audio DAC is an interface IC that converts digital audio samples into analog voltage signals suitable for amplifiers, headphones, line outputs, and audio conversion equipment. The PCM1793 belongs to the DAC hierarchy within analog and mixed-signal semiconductors, combining a stereo DAC core, digital filtering, clock-jitter tolerance, and output circuitry in one monolithic CMOS device. Its segment DAC architecture separates the current-steering operation into smaller segments, improving linearity and dynamic performance.
Principal features include advanced segment DAC architecture, balanced outputs, 24-bit resolution, sampling rates up to 192 kHz, and improved tolerance to clock jitter. According to the manufacturer datasheet, analog performance is measured at the PCM1793 output using an Audio Precision System Two Cascade system with a 20 kHz AES17 measurement filter. The specified 113 dB dynamic range and 113 dB SNR support demanding consumer and professional audio paths.
The PCM1793 is a monolithic CMOS integrated circuit containing two stereo converter channels and their support circuitry. Its differential outputs provide a balanced signal path that can optimize analog output implementation and reduce common-mode effects in downstream circuitry. A typical full-scale differential output is 2.1 V rms at the postamplifier, while the digital side accepts serial audio data through a three-wire interface.
Typical applications include high-resolution digital audio players, professional audio interfaces, USB and network audio equipment, home-theater receivers, and digital mixing consoles. It is also suitable for portable listening equipment when board area, power consumption, and balanced-output integration are important. The 28-lead SSOP package simplifies assembly in designs that already use surface-mount audio converters.
When laying out a PCM1793 board, place decoupling capacitors close to the analog and digital supply pins, route audio data and clock signals away from analog outputs, and provide a clean return path for the balanced outputs. Verify the external clock, serial-data timing, digital-filter configuration, and output circuitry against the manufacturer application guidance before production.
This page combines the PCM1793 technical specifications with practical application guidance, same-family drop-in candidates, a parameter comparison, and PCB-oriented design notes. These engineering resources help shorten component selection and support a deliberate transition from the 28-lead SSOP datasheet specification to a complete stereo DAC implementation.
ドロップイン代替品: PCM1793DBR — 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: PCM1793DBR （同一形状・フットプリント） — 相違点: Clock Jitter Tolerance, Digital Interface, Output Type, Package, Process Technology.
PCM1792DBR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PCM1794DBR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PCM1796DBR
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →PCM1798DBR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
DSD1791DBR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PCM1793DBR 最大定格＆電気的特性
| Converter Type | Stereo audio digital-to-analog converter |
| 分解能 | 24 bit |
| Maximum Sampling Rate | 192 kHz |
| Dynamic Range | 113 dB typical |
| Signal-to-Noise Ratio | 113 dB typical |
| Total Harmonic Distortion Plus Noise | 0.001% typical |
| Full-Scale Output | 2.1 V rms typical at postamplifier |
| 出力タイプ | Differential voltage |
| Digital Interface | 3-wire serial |
| DAC Architecture | Advanced segment DAC |
| Process Technology | CMOS |
| Integrated Functions | Stereo DAC and support circuitry |
| Digital Filtering | Integrated digital filtering |
| Clock Jitter Tolerance | Improved tolerance |
| パッケージ | 28-lead SSOP |
| 実装タイプ | Surface mount |
PCM1793DBR 28-lead ssop ピン配置ガイド
PCM1793DBR (28-lead 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: PCM1793DBR.
詳細は データシート をご参照ください。
主な用途
PCM1793DBR の用途: 6 件s: High-Resolution Network Audio Player, Professional Audio Interface, Digital Mixing Console Output Stage, Home-Theater and Media Receiver, Digital Audio Recording Playback, Portable High-Fidelity Audio Device.
High-Resolution Network Audio Player
The PCM1793DBR fits a network or USB audio player that converts digital PCM streams into balanced analog signals for a headphone or line amplifier. Its 24-bit resolution supports up to 192 kHz sampling, while the 113 dB dynamic range and 113 dB SNR provide a high-performance conversion stage. The balanced differential outputs support a noise-resistant downstream signal path, while the 28-lead SSOP package preserves board space. A practical implementation should isolate the audio clock from digital processing circuitry and use clean analog grounding around the converter.
おすすめ
Professional Audio Interface
The PCM1793DBR is appropriate for a stereo professional audio interface requiring balanced outputs and high-resolution conversion. Its specified 113 dB dynamic range, 113 dB SNR, and 0.001% typical THD+N provide a strong starting point for line-level monitoring and studio playback. The differential voltage outputs can feed a balanced input stage without converting to single-ended signals immediately after the DAC. Clock-jitter tolerance supports practical system integration, although the reference clock, digital interface timing, grounding, and output filtering must follow the manufacturer guidance.
おすすめ
Digital Mixing Console Output Stage
The PCM1793DBR can serve as the stereo monitoring converter in a digital mixing console or broadcast audio path. Its balanced differential outputs suit professional routing and reduce the need for an immediate single-ended conversion stage. Operation up to 192 kHz supports high-rate program workflows, while the 113 dB SNR and 0.001% typical THD+N help preserve low-level detail in mixing and monitoring. Designers should use a clean reference clock, maintain short return paths, and verify the selected digital-filter and attenuation behavior against the complete system requirements.
おすすめ
Home-Theater and Media Receiver
The PCM1793DBR provides a high-resolution stereo DAC stage for a home-theater receiver, television, or media player. The converter accepts digital audio through its three-wire serial interface and supports sampling rates up to 192 kHz. Balanced differential outputs can feed an analog output amplifier or balanced input stage, while the specified 113 dB dynamic range and 113 dB SNR support low-noise playback. Placement near the analog output circuitry, effective supply bypassing, and controlled return-current paths are important for preserving performance in a multi-domain consumer-electronics board.
おすすめ
Digital Audio Recording Playback
The PCM1793DBR can be used for digital audio playback and monitoring where a 24-bit stereo DAC and balanced outputs are required. Its 0.001% typical THD+N and 113 dB typical dynamic range are suitable for reproducing low-level musical details without introducing obvious converter distortion. The advanced segment architecture improves linearity, while improved clock-jitter tolerance helps the converter maintain performance in systems with non-ideal clocking. Accurate playback still depends on correct digital timing, supply conditioning, analog output design, and correct handling of the device’s configuration pins.
おすすめ
Portable High-Fidelity Audio Device
The PCM1793DBR supports a compact high-fidelity audio design where 24-bit resolution, operation up to 192 kHz, and integrated stereo conversion are valuable. Its 28-lead SSOP package supports compact surface-mount layouts, and balanced outputs provide flexibility for headphone or line-driver circuitry. The converter’s measured specifications are defined at its output pins, so the portable system must also account for supply noise, analog amplification, thermal conditions, and battery-rail ripple. Confirm operating limits and power-consumption requirements in the manufacturer datasheet before battery-budget calculations are finalized.
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: PCM1793DBR — 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 | PCM1792DBR | PCM1794DBR | PCM1796DBR | PCM1798DBR | DSD1791DBR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SSOP-28 | SSOP-28 | SSOP-28 | SSOP-28 | SSOP-28 | SSOP-28 |
主な差別化要因
- Balanced stereo output architecture （vs PCM1792DBR)
- Specified high-resolution conversion performance （vs PCM1794DBR)
- Advanced segment DAC implementation （vs DSD1791DBR)
設計ノート
Place all supply bypass capacitors close to their associated PCM1793 power pins and keep the return currents short. Route the serial data, system clock, and control signals as compact digital traces away from the balanced analog outputs. Use a continuous ground reference for the analog section and avoid placing high-current display, relay, or processor return paths beneath the converter and output stage.
Verify the system clock, serial-data setup and hold timing, and master-clock relationship against the PCM1793 timing requirements. Keep clock traces short where possible and avoid routing them parallel to the analog output nets. A clean, low-jitter reference clock is important because the converter’s audio performance can be affected by timing errors even when the digital data itself is valid.
Do not treat balanced outputs as a substitute for a complete analog output stage. Configure the converter’s digital-filter, attenuation, mode, and control pins correctly, and verify the selected resistor and capacitor values against the manufacturer application circuit. Also confirm the full-scale output level before designing the following amplifier so that it does not clip or unnecessarily reduce system headroom.
コンプライアンス情報
The manufacturer product page and distributor listing do not provide the regulatory declarations needed to assign specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals states. AEC-Q100 qualification is not stated for the standard PCM1793DBR ordering code.
