PCM1793DB - 24-Bit 192kHz Stereo DAC | Texas Instruments
MPN: PCM1793DB ✓ NakahandaPCM1793DB Ulas
A digital-to-analog converter, or DAC, converts digital audio samples into an analog voltage waveform. The PCM1793 belongs to the broader hierarchy of stereo DAC, audio converter, signal-conversion IC, and semiconductor. Balanced voltage outputs support noise-rejecting analog signal paths, allowing a designer to optimize the output stage for the target amplifier and load. Its I2S-compatible digital interface accepts audio data from a digital audio source, while the DAC performs the final conversion before the analog output stage.
The principal features are 24-bit resolution, a maximum sampling rate of 192 kHz, balanced outputs, 113 dB dynamic range, and a typical THD+N of 0.001%. Hardware control provides an external interface for adjusting supported operating functions without relying entirely on software commands. The advanced segment DAC architecture is specifically designed to improve dynamic performance and reduce sensitivity to timing variations in the incoming digital clock.
The converter uses a monolithic CMOS implementation containing stereo digital-to-analog converters and associated support circuitry. Balanced voltage outputs distinguish the PCM1793 from converters that provide differential current outputs. At the postamplifier, a typical full-scale output of 2.1 V rms provides a defined analog reference level for subsequent voltage amplification or line-level routing. Its operating supply range is 4.5 V to 5.5 V.
Typical applications include high-resolution stereo audio equipment, CD and DVD player digital audio paths, professional audio converters, powered speakers, headphone-amplifier front ends, and digital audio system boards. The balanced output topology is useful when the downstream circuitry supports balanced inputs, while a carefully designed single-ended summing network can serve conventional line outputs.
Designers should treat the power supply, digital clock, ground layout, and output network as a complete signal-chain design. Place decoupling and output-network components close to their associated pins, keep analog return paths separate from switching and digital return currents, and provide filtering appropriate to the audio bandwidth. The SSOP package also requires attention to solder-joint quality and thermal conditions during assembly.
This product overview combines converter architecture, key electrical characteristics, application guidance, package information, and sourcing-oriented details. It is intended to help engineers determine whether the PCM1793DB's balanced voltage output, dynamic performance, and interface characteristics fit a stereo DAC design before beginning a detailed schematic and layout review.
Mga alternatibo na pwedeng ilagay na PCM1793DB — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Wala ng magagamit na drop-in alternatibo para sa produkto na ito.
Hilingin ang AlternatiboPCM1793DB Mga Pinakamataas na Rating at Electrical Characteristics
| Converter Type | Stereo audio digital-to-analog converter |
| Pangangasiwaan | 24 bit |
| Maximum Sampling Rate | 192 kHz |
| Digital Audio Interface | I2S |
| Output Architecture | Balanced voltage output |
| Typical Signal-to-Noise Ratio | 113 dB |
| Typical THD+N | 0.001% |
| Typical Full-Scale Output | 2.1 V rms at the postamplifier |
| Supply Voltage Range | 4.5 V to 5.5 V |
| DAC Architecture | Advanced segment DAC architecture |
| Process Technology | CMOS |
| Packhaging | 28-lead SSOP (DB) |
| Bilang ng Pin | 28 pins |
| Uri ng Pagpapasok | Surface mount |
Gabay sa Pin Configuration ng PCM1793DB 28-lead ssop (db)
Pin configuration para sa PCM1793DB (28-lead ssop (db) package). Ang analog component na ito ay may input, output, at power supply pins. Sumangguni sa datasheet ng manufacturer para sa offset null, compensation, at enable pin configurations. Perpekto para sa signal conditioning at amplifier circuits.
Wala ng detalyadong pinout data na magagamit para sa PCM1793DB.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
PCM1793DB ay nararapat para sa 6 aplikasyons: High-Resolution Stereo DAC, Professional Audio Converter, CD and DVD Player Audio Path, Powered Speaker Front End, Headphone Amplifier Front End, Digital Audio System Board.
High-Resolution Stereo DAC
The PCM1793DB fits a high-resolution stereo conversion stage because it accepts 24-bit digital audio at sampling rates up to 192 kHz and provides 113 dB typical SNR with 0.001% typical THD+N. Its balanced voltage outputs can feed a balanced analog input directly when the channel polarity and signal levels are handled correctly. The complete design should preserve clock quality, provide a stable 4.5 V to 5.5 V supply, and reference the manufacturer datasheet for supported digital formats and output-network values.
Inirekomenda
Professional Audio Converter
The PCM1793DB is appropriate for a professional stereo output stage requiring balanced voltage outputs and high-resolution conversion. Its typical 113 dB SNR and 0.001% THD+N establish a strong baseline for a converter, while the 192 kHz sampling capability supports high-rate digital audio sources. The downstream amplifier must accept the converter's balanced voltage outputs, and the board should use controlled ground partitioning so digital return currents do not add noise to the analog output stage.
Inirekomenda
CD and DVD Player Audio Path
PCM1793DB can serve as the final stereo DAC in a CD or DVD player architecture when a system requires more than a basic consumer converter. The I2S interface supports connection to a digital audio transport, while the balanced voltage outputs feed a line-level amplifier or active output stage. Its 24-bit resolution, 192 kHz maximum sampling rate, and 113 dB typical SNR are useful for high-quality playback. Designers should still evaluate the source's actual sample-rate requirements and the jitter performance of the complete clock path.
Inirekomenda
Powered Speaker Front End
The PCM1793DB is suitable for the digital-to-analog front end of a powered speaker when the system uses a balanced voltage-output signal chain. The 24-bit, 192 kHz converter provides ample source resolution, and its balanced outputs help maintain signal integrity over the internal analog route to the power amplifier. The implementation should account for the converter's 4.5 V to 5.5 V supply range, use local decoupling, and select an output network that preserves channel balance through the target cable and amplifier input.
Inirekomenda
Headphone Amplifier Front End
PCM1793DB can precede a headphone amplifier when the design requires a high-resolution balanced digital source and a clean voltage-output stage. Its balanced outputs can preserve noise rejection through the analog routing, while the 113 dB typical SNR and 0.001% typical THD+N minimize converter-generated degradation before amplification. A practical design must include the appropriate postamplifier or output network, manage gain carefully, and keep the headphone return path separate from converter and switching-supply return currents.
Inirekomenda
Digital Audio System Board
The PCM1793DB works well in a modular digital audio system that accepts I2S audio data and produces balanced analog stereo channels. Its 28-lead SSOP package supports compact board construction, and the converter's 4.5 V to 5.5 V operating range fits a conventional analog supply section. System integration requires stable clocking, defined channel polarity, correctly scaled output impedances, and a ground strategy that prevents high-current digital and switching paths from contaminating the balanced analog outputs.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for PCM1793DB — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto |
|---|---|
| Package | 28-lead SSOP (DB) |
| Brand | Texas Instruments |
| Converter Type | Stereo audio digital-to-analog converter |
| Resolution | 24 bit |
| Maximum Sampling Rate | 192 kHz |
| Digital Audio Interface | I2S |
| Output Architecture | Balanced voltage output |
| Typical Signal-to-Noise Ratio | 113 dB |
| Typical THD+N | 0.001% |
| Supply Voltage Range | 4.5 V to 5.5 V |
Pangunahing mga Pagkakaiba
- Balanced voltage-output architecture (kumpara saPCM1794)
- High-resolution stereo conversion (kumpara saPCM1716E)
- Advanced segment DAC implementation (kumpara saGeneric mono DAC implementations)
Talaan ng Disenyo
Treat the PCM1793DB as a mixed-signal converter and keep the I2S, clock, and control routes away from the balanced analog outputs. Route analog and digital returns to their intended ground structures without allowing switching or high-current return paths to cross the converter's output region. Place the digital-interface components and their return-current paths on the side of the board opposite the postamplifier and output-network components.
Preserve the quality and timing of the I2S data, bit clock, and system clock because the PCM1793DB's advanced segment DAC architecture is intended to improve clock-jitter tolerance but cannot eliminate excessive timing noise. Keep clock traces short, use a controlled reference source, avoid unnecessary stubs, and match impedance according to the board's digital signal-integrity requirements. Validate the complete clock path with an oscilloscope or dedicated audio test equipment.
Design the analog supply around the documented 4.5 V to 5.5 V operating range and place local decoupling close to the supply pins. Use separate, low-impedance return paths for the converter and sensitive analog stages so switching-regulator ripple and output-current transients do not add noise to the balanced outputs. Confirm startup, voltage tolerance, and absolute maximum limits in the Texas Instruments PCM1793 datasheet.
Do not connect the balanced voltage outputs as though PCM1793DB were a differential-current-output converter. Its typical full-scale output is 2.1 V rms at the postamplifier, and the external network must preserve that voltage-output behavior. Verify channel polarity, balanced versus single-ended termination, output impedance, and downstream amplifier input configuration to prevent clipping, incorrect channel cancellation, or an unstable analog stage.
Impormasyon ng Pagsunod sa Kautusan
The verified manufacturer product and datasheet pages do not state the requested compliance classifications in their visible excerpts.
