PCM1748E - 24-Bit Stereo Audio DAC | Texas Instruments
MPN: PCM1748E ✓ פעילPCM1748E סקירה
A stereo audio DAC is a specialized data-conversion component that accepts digital audio samples and produces corresponding analog left and right channel signals. In the broader semiconductor hierarchy, the PCM1748E belongs to the audio DAC class, within ADC/DAC and interface IC families. The enhanced multilevel delta-sigma architecture is intended to improve dynamic performance and clock tolerance compared with earlier converter implementations while keeping the external signal path manageable.
The verified product information identifies the PCM1748 family as a 24-bit audio DAC with I2S support and a 16-SSOP package. Distributor listings also identify the PCM1748E as a stereo audio DAC and describe the device as a 24-bit converter operating with digital audio input. The available snippets mention sampling-rate values that are not fully consistent across sources, including 96 kHz, 100 kHz, and 192 kHz; therefore, the exact supported sampling-rate range should be confirmed against the manufacturer datasheet before design release.
Typical signal-chain use places the PCM1748E after an audio source such as a digital interface, USB audio controller, or embedded audio processor. The digital stream is converted into left and right analog outputs for headphone, line-level, mixer, or amplifier circuitry. Because the converter is designed for stereo audio, it is useful in compact playback systems where two-channel conversion, small package size, and straightforward digital control are more important than a high channel count.
Designers should verify the SSOP-16 land pattern, digital interface format, system clocking, analog output implementation, and decoupling requirements against the current Texas Instruments datasheet. Layout should keep digital clock and data routing away from analog output nodes, while supply and ground connections should follow the manufacturer’s recommended application circuit. The 16-pin SSOP package also requires careful solderability and assembly planning when lead pitch and thermal exposure are significant design constraints.
This page consolidates verified manufacturer and distributor information, identifies the PCM1748E’s converter and packaging characteristics, and provides application-oriented guidance for engineers evaluating it as a stereo audio DAC. It also distinguishes documented part variants from packaging-only references and avoids treating unverified electrical limits as guaranteed specifications.
חלופות תחליף ישיר עבור PCM1748E — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
PCM1748KE
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PCM1748KE/2K
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PCM1748E/2K
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PCM1748E דירוגים מרביים ומאפיינים חשמליים
| Converter Type | Stereo digital-to-analog converter |
| Number of DAC Channels | 2 channels |
| רזולוציה | 24 bit |
| Architecture | Enhanced multilevel delta-sigma |
| Noise Shaping | Fourth-order |
| Amplitude Quantization | 8-level |
| Digital Interface | I2S |
| מארז | SSOP-16 |
| Process Technology | CMOS |
| Analog Outputs | 2 |
| סוג הרכבה | Surface Mount |
מדריך תצורת פינים של PCM1748E ssop-16
תצורת פינים עבור PCM1748E (מארזת ssop-16). רכיב אנלוגי זה כולל פיני כניסה, יציאה ואספקת מתח. יש לעיין בגיליון הנתונים של היצרן לתצורות פיני איפוס היסט, פיצוי והפעלה. אידיאלי למעגלי עיצוב אותות ומגברים.
אין נתוני פריסת פינים מפורטים עבור PCM1748E.
עיינו ב- גיליון נתונים עבור תצורת פינים מלאה.
יישומים טיפוסיים
PCM1748E מתאים עבור 6 יישוםs: USB Audio Playback, Stereo Headphone Amplifier Front End, Network Audio Player, Digital Mixer Console, Consumer Audio Set-Top Box, Industrial Audio Monitoring.
USB Audio Playback
The PCM1748E fits a stereo USB-audio output stage because it provides a 24-bit, two-channel DAC with I2S input in a compact 16-SSOP package. A USB audio controller can deliver the digital stream while the PCM1748E performs the final digital-to-analog conversion. Its verified enhanced multilevel delta-sigma architecture uses fourth-order noise shaping and 8-level amplitude quantization, supporting audio-focused designs that require clean stereo reconstruction. Before layout release, engineers should confirm the USB controller’s supported sample rates, I2S format, master-clock arrangement, and required DAC startup sequence against the manufacturer documentation. The small surface-mount package also helps reduce board area, although SSOP lead pitch must be considered for assembly and inspection.
מומלץ
Stereo Headphone Amplifier Front End
The PCM1748E can provide the stereo digital-to-analog stage ahead of a headphone amplifier in portable and desktop audio products. Its 24-bit resolution preserves fine digital sample detail, while the two-channel architecture supports separate left and right playback paths without requiring a multichannel converter. The I2S interface is suitable for connection to an audio processor or digital transport, and the 16-SSOP package limits board footprint. Actual headphone suitability depends on the analog output level, load drive, noise, distortion, and output-routing implementation, which are not fully available in the supplied snippets. Those parameters must be verified from the PCM1748 datasheet before selecting the headphone amplifier and passive output network.
מומלץ
Network Audio Player
The PCM1748E is applicable to compact network-audio products that decode a digital stream and require a two-channel analog output. The 24-bit stereo DAC and I2S interface allow a network-audio SoC or digital receiver to remain in the digital domain until the final conversion stage. The PCM1748 family’s enhanced multilevel delta-sigma architecture and fourth-order noise shaping are specifically identified by TI as supporting excellent dynamic performance and improved clock tolerance. A network-player implementation should still check master-clock requirements, supported sampling rates, de-click behavior, and power sequencing because those details were not present in the supplied search excerpts. Mechanical design must also account for the 16-pin SSOP footprint and board-level assembly process.
מומלץ
Digital Mixer Console
The PCM1748E can serve as a local stereo monitoring DAC in digital mixer equipment where a processor supplies I2S audio and the board requires two analog channels. Its 24-bit converter resolution and delta-sigma architecture are appropriate for preserving source detail through the digital monitoring path. The converter’s compact SSOP-16 package is useful where panel space is constrained, although the larger lead pitch can make automated assembly more demanding than a fine-pitch QFN. Engineering validation should cover supported clocking modes, analog output implementation, channel routing, and the coupling or filtering network specified by TI. It should also be reviewed for electromagnetic-emissions and signal-integrity risks where the DAC is positioned near high-gain microphone preamplifiers or switching power supplies.
מומלץ
Consumer Audio Set-Top Box
The PCM1748E is suitable for a two-channel analog output in set-top boxes, television systems, and related consumer audio products. The verified 24-bit stereo DAC, I2S support, and SSOP-16 package provide a compact conversion stage for digital program audio. In such systems, the converter can accept audio from a broadcast or network processor and feed line-level amplifiers through the application circuit defined by the manufacturer. Thermal and supply requirements are not available in the verified excerpts, so designers must not assume performance outside the documented operating limits. PCB planning should keep the digital clock and data path away from analog output routing, provide a quiet return path, and follow TI’s recommended component placement and decoupling layout to avoid introducing noise into the reconstructed audio signal.
מומלץ
Industrial Audio Monitoring
The PCM1748E can support stereo monitoring in industrial equipment that records, processes, or reproduces audio alongside machine-control functions. A digital signal processor or embedded controller can provide the I2S stream, while the PCM1748E creates left and right analog outputs for monitoring or downstream amplification. Its 24-bit resolution and fourth-order noise-shaping architecture are relevant when preserving dynamic range is important. The converter itself is a digital IC and is not subject to a power-semiconductor safe-operating-area requirement. Industrial suitability still depends on the datasheet’s supply, temperature, clock, and lifecycle data, which were not supplied in the excerpts. Before deployment, engineers should review transient immunity, grounding, isolation strategy, and analog filtering rather than treating general commercial availability as evidence of industrial qualification.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PCM1748E — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PCM1748KE | PCM1748KE/2K | PCM1748E/2K |
|---|---|---|---|---|
| Package | SSOP-16 | SSOP-16 | SSOP-16 | SSOP-16 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Converter Type | Stereo digital-to-analog converter | Stereo digital-to-analog converter | Stereo digital-to-analog converter | Stereo digital-to-analog converter |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit |
| Number of DAC Channels | 2 channels | 2 channels | 2 channels | 2 channels |
| Architecture | Enhanced multilevel delta-sigma | Delta-sigma | Delta-sigma | Enhanced multilevel delta-sigma |
מבדילים עיקריים
- Exact documented stereo DAC ordering code (לעומתPCM1748KE)
- Verified 24-bit two-channel conversion configuration (לעומתPCM1748KE/2K)
- Enhanced multilevel conversion architecture (לעומתPCM1748E/2K)
הערות תכנון
Keep the I2S data, bit clock, and master-clock routes short and controlled, and avoid routing them beneath or directly beside the analog output network. Provide a continuous ground reference and follow the manufacturer’s recommended decoupling connections. Because the available data does not include a complete pin-by-pin pinout or application circuit, the final PCB layout must be checked against the current Texas Instruments datasheet rather than inferred from distributor summaries.
Do not treat the 96 kHz, 100 kHz, and 192 kHz sampling-rate references found in different distributor snippets as interchangeable guarantees. Confirm the complete supported sampling-rate list, clock ratios, and I2S timing directly in the manufacturer datasheet. Also verify the exact orderable code and carrier option before production release, because PCM1748E, PCM1748KE, and their /2K references appear as separate catalog variants.
Place the DAC’s digital interface away from sensitive analog inputs and high-impedance nodes elsewhere on the board. Use the application circuit recommended by TI for analog outputs, and assess the output filtering requirements for the intended audio bandwidth. Clock jitter, grounding, and supply-noise coupling can affect reconstructed audio even when the nominal converter resolution is 24 bits, so system-level testing should include noise and distortion measurements.
Use an SSOP-16 footprint and assembly process that accommodate the package’s lead pitch and soldering requirements. Check paste, stencil, and inspection assumptions during PCB and manufacturing qualification. Although the 16-pin SSOP is relatively compact, it is not a no-lead package, so component placement must account for adjacent-component clearance and the mechanical requirements of the selected carrier option.
מידע על תאימות
No explicit compliance declarations were included in the verified web data. Compliance and qualification status must be confirmed from the current manufacturer product page and documentation.
