PCM1793DBR - 24-Bit 192kHz Stereo DAC | Texas Instruments
Référence : PCM1793DBR ✓ ActifPCM1793DBR Présentation
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.
Alternatives de remplacement direct pour PCM1793DBR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PCM1793DBR (même facteur de forme et même empreinte) — différant par Clock Jitter Tolerance, Digital Interface, Output Type, Package, Process Technology.
PCM1792DBR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PCM1794DBR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PCM1796DBR
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →PCM1798DBR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
DSD1791DBR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PCM1793DBR Valeurs maximales et caractéristiques électriques
| Converter Type | Stereo audio digital-to-analog converter |
| Résolution | 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 |
| Type de sortie | 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 |
| Boîtier | 28-lead SSOP |
| Type de montage | Surface mount |
Guide de configuration des broches du PCM1793DBR 28-lead ssop
Configuration des broches du PCM1793DBR (boîtier 28-lead ssop). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour PCM1793DBR.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
PCM1793DBR convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PCM1793DBR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Balanced stereo output architecture (vs PCM1792DBR)
- Specified high-resolution conversion performance (vs PCM1794DBR)
- Advanced segment DAC implementation (vs DSD1791DBR)
Notes de conception
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.
Informations de conformité
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.
