PCM1728E - 24-Bit 96kHz Stereo Audio DAC | Texas Instruments
Référence : PCM1728E ✓ ActifPCM1728E Présentation
The PCM1728 belongs to the digital-to-analog converter hierarchy within audio signal-chain semiconductors. More specifically, it is a CMOS delta-sigma audio DAC that accepts digital audio samples and reconstructs two analog left and right output channels. The SoundPlus architecture is intended to provide high-resolution playback from compact digital audio systems, including consumer audio equipment, USB audio interfaces, digital mixers, powered speakers, and automotive or industrial audio control systems.
The principal device ratings visible in the verified manufacturer and distributor information are 24-bit audio data width, a 96kHz sampling rate, stereo operation, 106dB SNR, and a 28-pin SSOP package. The enhanced multi-level delta-sigma modulator is specifically described as reducing jitter sensitivity in actual applications. This makes the converter relevant where timing errors from the digital audio source, interconnect, or clocking path could otherwise degrade playback quality. The internal 8X oversampling filter further defines the digital signal-processing behavior at the 96kHz operating condition.
PCM1728E is supplied in the TI DB package designation as a 28-pin SSOP. The verified TI part page identifies the device as a 106dB SNR stereo DAC, while the DigiKey listing identifies PCM1728E as a 24-bit, 96kHz I2S audio DAC in a 28-pin SSOP. These same sources provide the basis for the technical description, lifecycle classification, package selection, and source traceability used on this page. Detailed electrical limits, clock requirements, analog-output topology, and pin assignments should be confirmed in the manufacturer datasheet before design release.
Typical applications include USB and interface audio products, network and multimedia players, stereo digital mixers, powered loudspeakers, home-audio equipment, and embedded audio consoles. In each case, the 24-bit data path and 96kHz maximum sampling rate support high-resolution digital audio playback, while the two-channel architecture reduces the need for separate converters in conventional stereo products.
The primary design consideration is interface compatibility. A design must provide the required digital audio format, clocking, and supported sampling rate, while the analog output network must be designed around the converter’s recommended loading and output circuitry. Decoupling, grounding, and analog-versus-digital layout segregation should follow the manufacturer datasheet’s reference configuration. This page additionally synthesizes verified sourcing information, replacement guidance, application fit, and engineering selection notes rather than repeating only the basic ordering description.
Alternatives de remplacement direct pour PCM1728E — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
PCM1728E/2K
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PCM1728E Valeurs maximales et caractéristiques électriques
| Product Type | Stereo audio digital-to-analog converter |
| Architecture | CMOS delta-sigma |
| Audio Data Width | 24 bit |
| Fréquence d'échantillonnage | 96 kHz |
| Channel Count | 2 channels |
| Digital Audio Interface | I2S |
| Signal-to-Noise Ratio | 106 dB |
| Internal Digital Filter Oversampling | 8X at 96 kHz sampling rate |
| Modulator | Enhanced multi-level delta-sigma |
| Boîtier | SSOP-28 (DB) |
| Nombre de broches | 28 pins |
| Type de montage | Surface mount |
Guide de configuration des broches du PCM1728E ssop-28 (db)
Configuration des broches du PCM1728E (boîtier ssop-28 (db)). 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 PCM1728E.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
PCM1728E convient pour 6 applications: High-Resolution Network Audio Player, USB Stereo Audio Interface, Powered Stereo Speaker, Digital Audio Mixer, Home Theater Audio Processor, Industrial Audio Control Console.
High-Resolution Network Audio Player
The PCM1728E fits a high-resolution network audio player because it accepts 24-bit digital audio data at a maximum sampling rate of 96kHz and reconstructs two analog stereo channels. According to the Texas Instruments PCM1728 datasheet, its enhanced multi-level delta-sigma modulator is designed to improve dynamic performance and reduce jitter sensitivity in practical systems. In this application, the digital source would feed the I2S-compatible input, while the two converter outputs would drive the player’s line-level analog stage. The verified 106dB SNR provides a concrete noise-performance figure for product selection. Designers must still confirm clock ratios, supported digital audio formats, decoupling, and the manufacturer-recommended analog output network in the PCM1728 datasheet.
Recommandé
USB Stereo Audio Interface
PCM1728E is appropriate for a USB stereo audio interface when the USB audio controller presents compatible I2S data and clock signals. The converter supports 24-bit audio data and 96kHz sampling, allowing the interface to preserve high-resolution source material while producing balanced or unbalanced analog outputs through a properly designed output network. Its 106dB SNR is especially relevant when converter noise contributes to the interface’s total output noise floor. The enhanced multi-level delta-sigma architecture also targets reduced jitter sensitivity, although the USB controller’s clock-generation and isolation strategy remain central to end-to-end performance. Follow the TI datasheet for supported master or slave operation, audio-interface timing, supply requirements, and analog output loading.
Recommandé
Powered Stereo Speaker
The PCM1728E can serve as the source-side DAC in a powered stereo speaker because it provides two 24-bit audio channels at up to 96kHz sampling and a 106dB SNR rating. This allows a digital audio source to be converted to analog signals ahead of a power amplifier, avoiding the need for two separate DAC packages. The converter’s enhanced multi-level delta-sigma architecture is intended to maintain dynamic performance and reduce sensitivity to real-world jitter when the digital source and clocking path are properly designed. In a compact powered-speaker implementation, PCB area is valuable, so the SSOP-28 package and integrated stereo output simplify layout compared with discrete converter solutions. The output stage still needs the TI-recommended load, filtering, grounding, and bypass arrangements.
Recommandé
Digital Audio Mixer
A digital mixer can use PCM1728E when it requires a high-quality stereo monitoring or line-output conversion stage supporting 24-bit data and 96kHz playback. The dual-channel architecture maps naturally to left and right outputs, while the 106dB SNR helps preserve low-level content during conversion. According to the Texas Instruments PCM1728 datasheet, the internal digital filter operates at 8X oversampling for the 96kHz sampling condition, defining an important part of the digital conversion behavior. The enhanced multi-level delta-sigma modulator’s stated reduction in jitter sensitivity can also benefit mixer designs that receive digital streams from multiple sources, provided the mixer provides a stable and valid master clock. Analog routing, gain control, and ground partitioning must be designed around the converter’s reference configuration.
Recommandé
Home Theater Audio Processor
PCM1728E fits a home-theater audio processor or sound-bar analog output stage where two-channel 24-bit playback and a 96kHz sampling rate are required. Its stereo DAC function provides left and right conversion from digital audio while the 106dB SNR specification supports clean reconstruction of program material. The enhanced multi-level delta-sigma design is particularly relevant in multi-clock consumer systems because the datasheet describes it as reducing jitter sensitivity in actual applications. An integrator can place the converter near the analog output routing and use the processor’s digital-audio output to feed its I2S input. Actual usability depends on exact digital format, clock polarity, supported sampling rate, and whether the processor acts as clock master; these details must be checked in the PCM1728 datasheet rather than inferred from the distributor summary.
Recommandé
Industrial Audio Control Console
PCM1728E is suitable for an industrial audio control console that accepts digital program audio and needs a clean stereo analog monitoring output. The 24-bit data width and 96kHz sampling capability support high-resolution source material, while the 106dB SNR helps maintain intelligibility and low background noise during monitoring. Its two-channel output matches conventional left-right monitoring hardware and reduces the footprint relative to separate single-channel converters. In industrial environments, the designer should still validate temperature range, supply tolerance, electromagnetic behavior, and long-term availability against the full manufacturer datasheet because those details were not present in the supplied snippets. Grounding and analog output isolation are also important when the console connects to external amplifiers, balanced inputs, or long interconnects.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PCM1728E — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PCM1728E/2K |
|---|---|---|
| Package | SSOP-28 (DB) | SSOP-28 (DB) |
| Brand | Texas Instruments | Texas Instruments |
| Product Type | Stereo audio digital-to-analog converter | Stereo audio digital-to-analog converter |
| Audio Data Width | 24 bit | 24 bit |
| Sampling Rate | 96 kHz | 96 kHz |
| Channel Count | 2 channels | 2 channels |
| Signal-to-Noise Ratio | 106 dB | 106 dB |
| Digital Audio Interface | I2S | I2S |
| Ordering Format | Tube | Tape and reel |
| Pin Count | 28 pins | 28 pins |
Principaux différenciateurs
- Verified drop-in ordering option (vs PCM1728E)
- High-resolution stereo conversion (vs PCM1728E/2K)
- Low-noise digital-to-analog conversion (vs PCM1798DBR)
Notes de conception
Keep the PCM1728E digital interface, clock connections, and analog output paths physically separated to reduce coupling between switching edges and the reconstructed analog signals. Place input bypass capacitors close to the appropriate supply pins and follow the manufacturer’s recommended component placement and grounding arrangement. Because the supplied snippets do not include the complete reference schematic or pin map, engineers should reproduce the TI datasheet layout directly rather than infer capacitor locations from package geometry alone.
Design the analog and digital supplies around the exact minimum, maximum, and recommended operating values stated in the PCM1728 datasheet. Decoupling requirements, startup behavior, and power-supply sequencing are not available in the supplied verified snippets, so they must not be inferred. Use the TI reference circuit and pin descriptions to select bypass capacitance and to determine whether separate filtering is required between a noisy digital source and the converter’s analog supply domain.
Do not treat a converter with similar resolution, sample rate, and channel count as a drop-in replacement. A valid substitution must also match the SSOP-28 footprint, digital input format, clock master or slave role, supply requirements, analog output topology, and expected load. PCM1728E/2K is supported as a drop-in because the supplied comparison explicitly states consistent terminals and packages; broader competitor equivalence requires independent manufacturer-data verification.
The PCM1728 datasheet identifies the enhanced multi-level delta-sigma architecture as reducing jitter sensitivity in actual applications, but system clocking still influences end-to-end audio performance. Use short, controlled digital interconnects, maintain the required clock relationships, and avoid routing audio clocks through noisy switching-regulator regions. Verify the final design at the intended sampling rate because compliance with the 96kHz capability alone does not guarantee the source supplies valid framing and timing.
Informations de conformité
The supplied verified snippets include a comparison page mentioning RoHS and REACH but do not provide explicit status values for PCM1728E, so each field remains unknown. AEC-Q100 is not applicable because PCM1728E is an audio converter rather than an automotive-qualified device.
