ADC/DAC
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PCM1704U - 24-Bit 96kHz Audio DAC | Texas Instruments
The Texas Instruments PCM1704U is a precision 24-bit, 96kHz BiCMOS sign-magnitude digital-to-analog converter (audio DAC) delivered in a 20-pin SOIC package. It operates from dual power supplies of approximately +5V and -5V, supports sampling frequencies from 16kHz to 96kHz with 8x oversampling at 96kHz, and offers a 0.2 microsecond output settling time over an operating temperature range of -25C to +85C. A digital-to-analog converter (DAC) is a mixed-signal device that transforms digital audio sample data into a continuous analog voltage or current. Within the signal-chain hierarchy, a DAC sits between a digital audio source (DSP, receiver, or interpolation filter) and the analog output stage (I/V converter and low-pass filter) of an audio system. High-resolution audio DACs such as the PCM1704 define the ultimate fidelity limit of the entire playback chain. Key features of the PCM1704U include exceptionally high dynamic performance, ultra-low distortion, and excellent low-level signal linearity. The advanced sign-magnitude architecture uses two matched DAC cores steered by a sign bit, which eliminates zero-crossing distortion - a fundamental weakness of conventional unipolar ladder DACs. This makes the device especially strong at reproducing quiet passages where low-level linearity matters most. Technically, the PCM1704 is fabricated on a BiCMOS process that combines high-speed bipolar analog circuitry with low-power CMOS logic. The serial audio input interface accepts standard I2S-style data, bit clock, and left/right clock signals, and the device is designed to be paired with a digital interpolation filter for 8x oversampling operation at 96kHz sampling rates. Typical applications include high-end consumer audio CD and SACD players, professional studio mastering equipment, digital mixing consoles, and audiophile outboard DACs, where the PCM1704's ultra-low distortion directly translates into greater dynamic range and transparency. Design consideration: because the PCM1704 requires dual supplies and an external I/V conversion stage, and is now obsoleted by Texas Instruments, new designs should budget for end-of-life sourcing or evaluate the PCM179x family, which TI identifies as the recommended performance successor rather than a pin-compatible replacement. This page adds value beyond the manufacturer datasheet by synthesizing distributor availability, grade-variant comparisons, obsolescence guidance from TI E2E forums, and practical design notes in one place.
PCM1704U-J - 24-Bit 96kHz Sign-Magnitude DAC | Texas Instruments
The Texas Instruments PCM1704U-J is a precision 24-bit, 96 kHz sign-magnitude digital-to-analog converter from TI's SoundPlus family, housed in a 20-pin SOIC package. It delivers exceptional dynamic performance with K-grade dynamic range of 112 dB typical, signal-to-noise ratio of 120 dB typical, and THD+N as low as 0.0008% typical at the J grade. The device uses TI's proprietary BiCMOS sign-magnitude architecture with laser-trimmed thin-film resistors to achieve ultra-low distortion and excellent low-level signal resolution. A sign-magnitude DAC is a digital-to-analog converter architecture that uses two complementary current sources switched in opposite phase per bit, rather than a thermometer-coded unary or segmented topology. This approach eliminates the major-carry switching glitches inherent in conventional binary-weighted DACs, yielding -40 dB lower glitch energy. In the broader hierarchy, the PCM1704U-J sits as an audio DAC, which is a sub-category of data-converter IC, itself under the mixed-signal IC umbrella in signal chain products. The BiCMOS process pairs bipolar precision transistors with CMOS logic, achieving fast settling of ±1.2 mA in 200 ns while drawing modest operating current. The PCM1704U-J supports sampling frequencies from 16 kHz to 96 kHz with 8X oversampling when paired with a digital interpolation filter. Its fast current output of ±1.2 mA in 200 ns enables clean reproduction of transients in high-resolution audio material. Internal glitch-free differential current outputs eliminate mid-scale code-dependent distortion, while the on-chip precision bandgap reference stabilizes the output compliance over temperature. Typical applications include high-end consumer CD/SACD players, professional studio digital mixers, audiophile outboard DACs, and mastering-grade A/D converters. The wide dynamic range also makes it useful in measurement instrumentation where 24-bit resolution at high update rates is required. Key design considerations include using a true differential current-to-voltage converter (typically an op-amp such as the OPA1612 or OPA2134) and a low-noise voltage reference to bias the I-to-V stage. The 20-pin SOIC requires a standard SOIC-20 footprint, with analog and digital grounds tied at a single star point near the device. This page synthesizes manufacturer datasheet specifications, current distributor pricing, drop-in same-family alternatives within TI's PCM1704 grading scheme, and practical application circuits that are not consolidated in the original datasheet.
PCM1704U-J/2K - 24-Bit 96kHz Sign-Magnitude BiCMOS Audio DAC | Texas Instruments
The Texas Instruments PCM1704U-J/2K is a precision 24-bit, 96 kHz BiCMOS sign-magnitude digital-to-analog converter housed in a 20-pin SOIC package. The J grade delivers 112 dB dynamic range, 120 dB SNR, and 0.0008 % THD+N (typical), making it one of the legendary multi-bit R-2R audio DACs long favored in high-end consumer and professional audio designs. The 8X oversampling interface supports a maximum sampling frequency of 96 kHz, while a fast current output of ±1.2 mA in 200 ns enables clean transient response for music reproduction. The /2K suffix denotes the 2,000-piece tape-and-reel packaging option. A digital-to-analog converter (DAC) is an integrated circuit that converts digital audio words into an analog voltage or current signal. Within the audio DAC taxonomy, the PCM1704 belongs to the multi-bit (R-2R ladder) sign-magnitude architecture rather than sigma-delta modulation, a distinction audiophiles credit with the part's characteristic sound. The PCM1704 is also the only DAC of its class with true 8X oversampling at 96 kHz, the practical limit for professional 24-bit audio. Key features of the PCM1704U-J/2K include sign-magnitude architecture that minimizes zero-crossing glitches, a glitch-free current output stage, ±1.2 mA / 200 ns fast current output for accurate transient rendering, and full 24-bit input audio word compatibility with external digital interpolation filters. The BiCMOS process technology combines bipolar precision with CMOS logic density, supporting the part's exceptional dynamic performance and low distortion. Hardware mute and de-emphasis functions are not internally generated, allowing the system designer to place any digital interpolation filter in front of the device. Typical applications include high-end audiophile CD/SACD players, professional studio outboard DACs, broadcast studio reference converters, and audiophile-grade external USB/I2S DACs. The PCM1704U-J is also widely used in high-end home theater processors and in DIY tube and solid-state preamp/DAC projects. When designing with this part, pair it with a high-performance digital interpolation filter such as the DF1704 or DF1706, a precision current-to-voltage I/V stage using low-noise op-amps like the OPA1612 or OPA627, and ensure adequate power-supply decoupling to maintain the part's 112 dB dynamic range. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a typical DigiKey or Mouser product listing.
PCM1704U-K - 24-Bit 96kHz Sign-Magnitude Audio DAC | TI
The Texas Instruments PCM1704U-K is a precision 24-bit, 96 kHz BiCMOS sign-magnitude digital-to-analog converter from TI's SoundPlus audio lineage, housed in a 20-pin SOIC (SO) package and graded in the top-bin "K" performance class. It delivers 24-bit resolution at 96 kHz sampling with an ultra-low distortion architecture, 112 dB typical dynamic range, and a sign-magnitude topology that minimizes zero-crossing glitches versus conventional R-2R ladders. The serial audio data interface accepts 24-bit I2S-compatible words. A digital-to-analog converter (DAC) is a semiconductor device that reconstructs an analog waveform from a digital audio stream; within the broader taxonomy, audio DACs belong to data converters (ADC/DAC ICs), then mixed-signal ICs, then integrated circuits. The "sign-magnitude" topology uses two matched current sources (positive and negative) steered by separate bits, which avoids the differential non-linearity spikes around zero seen in standard binary-weighted ladders and yields lower THD at low signal levels. Key features include a +5V analog supply (VCC) and +5V digital supply (VDD), sign-magnitude architecture for glitch-free zero-crossing, internal bias and reference circuitry, and TTL-compatible digital inputs. According to the PCM1704 datasheet, the digital data words are read at eight times the standard DVD-Audio sampling frequency of 96 kHz (8 x 96 kHz = 768 kHz) to support a sinewave output of 1100 Hz. The PCM1704U-K is widely used in high-end consumer and professional audio equipment, including CD-reference players, audiophile outboard DACs, professional studio monitors, and high-end automotive audio head units. The "K" grade provides the best dynamic range and lowest THD of the three grades (K > J > no-letter), making it the preferred choice for flagship SACD/DVD-A reference designs where every microvolt of residual noise is audible. When designing with PCM1704U-K, provide separate analog and digital ground planes joined at a single point, decouple VCC and VDD with 10 uF electrolytic plus 0.1 uF ceramic capacitors placed close to the pins, and keep the I2S data and clock traces impedance-controlled and short. Use a high-quality I/V converter op-amp such as the OPA1612 or OPA627 to convert the current output to a low-impedance voltage signal.
PCM1716E - 24-Bit 96 kHz Stereo Audio DAC | Texas Instruments
The Texas Instruments PCM1716E is a 24-bit, 96 kHz sampling CMOS delta-sigma stereo audio digital-to-analog converter in a 28-pin SSOP package. The device accepts digital audio data through its I2S interface and is designed for stereo audio playback systems requiring a compact, high-resolution converter. Its 28-SSOP package supports surface-mount assembly while keeping the component count and board area low. A digital-to-analog converter, or DAC, is a signal-conversion IC that transforms digital audio samples into left- and right-channel analog voltage signals. The PCM1716E belongs to the delta-sigma DAC family, a CMOS architecture that uses multi-level noise shaping and digital filtering to produce an analog output suitable for audio amplifiers and line-output stages. Its stereo output architecture supports simultaneous left and right channels from one component. The PCM1716E provides 24-bit digital resolution and a sampling frequency range of 16 kHz to 96 kHz. The verified manufacturer description identifies support for standard, I2S, and left-justified data formats, giving designers flexibility across common audio source formats. Digital de-emphasis and independent left and right digital attenuation are also identified as device features, allowing software or system-level control of playback behavior. The converter architecture separates digital signal processing from analog output generation. Its digital interface accepts the bit clock, left-right clock, and serial data signals, while the analog section produces the stereo output. Independent channel attenuation is particularly useful in dual-mono equipment or systems that need separate level management for the two output channels. The CMOS implementation also aligns with modern low-power audio product design requirements. Typical applications include CD and DVD player analog output stages, digital audio amplifiers, home-theater receivers, active speakers, USB or network audio products, and compact digital audio equipment. For each application, the converter must be followed by an appropriate analog output stage and output filtering network, while the digital source must provide compatible clocking and data timing. When designing a PCB around the PCM1716E, verify the complete pin assignment and reference layout against the manufacturer datasheet before routing power, clocks, data, and analog outputs. Decoupling should be placed close to the supply pins, analog and digital return paths should be managed carefully, and the output network should preserve the converter's intended signal integrity. The available evidence does not provide the complete pin names, exact electrical limits, or a verified price ladder. This page consolidates the verified PCM1716E format, resolution, sampling-rate, interface, package, sourcing, and cross-reference information, while clearly separating unavailable electrical details from confirmed manufacturer features. It also provides application guidance, design notes, and a strict review of available drop-in replacement evidence.
PCM1717E - 18-Bit 48 kHz Stereo DAC | Texas Instruments
Texas Instruments PCM1717E is a stereo audio digital-to-analog converter with 18-bit resolution, support for audio data up to 48 kHz, and a 20-pin SSOP package. The converter uses a delta-sigma DAC architecture with an 8X oversampling digital filter and a multilevel delta-sigma DAC followed by an analog low-pass filter. It provides two analog output channels for left and right stereo audio signals and accepts 18-bit input data according to the manufacturer datasheet. An audio DAC is a data-converter IC that transforms digital PCM audio samples into left- and right-channel analog voltages suitable for amplifiers, headphones, line outputs, or downstream audio-processing stages. Within the broader semiconductor hierarchy, the PCM1717E is an ADC/DAC and audio interface IC, while its delta-sigma implementation places it within digital-to-analog converters and sound-card signal-chain devices. Its 20-pin SSOP package provides a compact surface-mount form factor for multichannel consumer and industrial audio equipment. The principal verified features include complete stereo conversion, 18-bit input-data support, 48 kHz operation, 8X digital-filter oversampling, a multilevel delta-sigma DAC, and an analog low-pass filter. These functions integrate the essential digital decoding and analog reconstruction stages into one device. The two-channel architecture reduces the need for separate converters when a design must reproduce a standard stereo program. The 20-SSOP package measures 0.209 inches, or 5.30 mm, in body width according to the distributor listing. The PCM1717E combines a multi-level delta-sigma conversion stage with oversampled digital filtering. Digital filtering shapes the incoming PCM stream before conversion, while the analog low-pass filter suppresses high-frequency energy at the outputs. Because the supplied distributor and manufacturer-search data do not publish detailed dynamic-range, distortion, output-voltage, clock, power-supply, or channel-separation figures, those values remain unverified here and must be confirmed in the manufacturer datasheet before final analog, clock, or power-budget calculations are released. Typical uses include digital audio player boards, multimedia systems, active speakers, compact consumer stereo equipment, and embedded audio interfaces. Its stereo DAC function is also relevant to USB or legacy digital-audio subsystems where an I2S-compatible source must be converted into analog left and right outputs. The verified distributor description identifies the interface as I2S-capable, while exact supported formats and electrical limits should be checked against the relevant revision of the manufacturer datasheet. The primary design consideration is PCB implementation. The 20-pin SSOP footprint requires adequate copper, clean return paths, and correctly placed input and output capacitors; exact capacitor values, supported voltage rails, and output architecture must be taken from the datasheet rather than inferred. Clocking, digital-interface levels, analog grounding, and power sequencing should also be verified against the complete application circuit. This page combines verified distributor pricing and package information, manufacturer-datasheet feature statements, sourced drop-in cross-reference data, and engineering-focused selection guidance. It distinguishes verified facts from unavailable parameters so engineers can accelerate sourcing without treating unconfirmed electrical values as design guarantees.
PCM1719E - 18-Bit Stereo Audio DAC | Texas Instruments
Texas Instruments PCM1719E is a 28-bit-package stereo audio digital-to-analog converter that accepts 18-bit audio data, operates with an I2S interface at 48 kHz, and is housed in a 28-pin SSOP package. The converter supports 8-times oversampling through its digital filter, uses a multi-level delta-sigma DAC and analog low-pass filter, and includes an on-chip headphone amplifier. Its specified dynamic range reaches 96 dB, signal-to-noise ratio reaches 100 dB, and total harmonic distortion plus noise is specified at -88 dB. A digital-to-analog converter, or DAC, converts digital audio samples into an analog voltage suitable for headphone, line-level, or downstream audio amplification. In the product hierarchy, the PCM1719E is a stereo audio DAC, which is an ADC/DAC interface IC and therefore part of the broader signal-conversion and semiconductor family. The integrated headphone output makes the device useful where a board requires an audio output stage without a separate analog-output amplifier. Key features include 18-bit input-data acceptance, complete stereo conversion, an 8-times oversampling digital filter, and a multi-level delta-sigma conversion architecture. The analog low-pass filter removes high-frequency content generated by the oversampling process before the signal reaches the output stage. The specified -88 dB THD+N and 100 dB SNR characterize the converter's distortion and noise performance, while the 96 dB dynamic-range figure indicates the span between specified minimum and maximum signal levels. The PCM1719E uses a 5 V supply according to the verified component data. Its digital audio connection is I2S, and the listed 48 kHz operating rate identifies the supported sampling configuration shown in the distributor listing. The 28-SSOP package has a stated width of 5.30 mm and a lead pitch of 0.209 inches. The package therefore belongs to the SSOP surface-mount family, although the verified source does not provide a complete verified pin list. Typical uses include digital-audio source boards, multimedia equipment, headphone outputs, compact consumer audio systems, and embedded audio products requiring a stereo I2S-to-analog conversion stage. An application should account for the converter's 5 V supply requirement, provide clean digital and analog supply routing, and use suitable output coupling and amplifier-interface components. The principal design consideration is separating analog and digital return paths to minimize converter noise while keeping the SSOP layout compact. Decoupling capacitors should be placed near the supply pins, and analog output routing should remain away from high-current digital return paths. The PCM1719E is appropriate when its documented I2S interface, 48 kHz format, 5 V supply, converter performance, and integrated headphone capability match the system. This product record combines the verified distributor specifications, package information, source links, interface details, and application guidance. It also distinguishes the PCM1719E from devices with similar functions but different timing, supply, or package requirements, helping engineers avoid substitutions that are not true pin-to-pin replacements.
PCM1720E - 24-Bit 96kHz Stereo Audio DAC | Texas Instruments
The Texas Instruments PCM1720E is a 24-bit, 96kHz stereo audio digital-to-analog converter with an integrated digital filter and output amplifier, supplied in a 20-pin SSOP package. The device accepts 24-bit audio data and is compatible with MPEG2 and AC-3 audio formats. Its 96dB dynamic range and support for 8x oversampling at every supported sampling frequency position it for high-quality digital audio reproduction, data-acquisition equipment, and consumer audio systems. A digital-to-analog converter, or DAC, is an interface integrated circuit that converts digital audio samples into an analog voltage signal. In the signal hierarchy, a DAC belongs to the ADC/DAC class of data-converter ICs and ultimately to the broader semiconductor and signal-processing categories. The PCM1720E provides a complete stereo conversion path by combining input-format handling, digital filtering, oversampling, and output-amplifier functions in one device. The PCM1720E accepts 24-bit input data and operates with sampling rates up to 96kHz. According to the manufacturer PCM1720 datasheet, the converter supports 8x oversampling at all sampling frequencies. Its specified dynamic range is 96dB, while system-clock operation is supported at 256fS and 384fS. These features make the device appropriate for designs requiring a conventional stereo I2S audio path rather than a high-resolution multichannel codec. The 20-pin SSOP package provides a compact surface-mount implementation for multichannel consumer electronics, audio adapters, digital mixing equipment, and instrumentation. The verified source data describes the package as SSOP with 20 terminals and a gull-wing form. Power-supply sequencing, output coupling, ground handling, and clock jitter remain important design considerations because these parameters directly affect the integrity of the recovered analog audio signal. Typical uses include decoding MPEG2 or AC-3 streams, reproducing stereo music through an analog amplifier, and serving as the analog-output stage in digital audio acquisition systems. In these applications, the PCM1720E accepts the digital audio stream, applies its internal oversampling and digital filtering, and produces left and right analog outputs through its integrated output amplifier. Designers should place the PCM1720E close to its digital source and analog output circuitry, maintain the required bypass and filtering components recommended by the manufacturer datasheet, and route analog and digital return currents carefully. The datasheet is the controlling reference for pin assignments, supported data formats, clock requirements, output configuration, and electrical limits. This page consolidates the verified distributor specifications, package information, pricing references, comparison candidates, and practical design guidance for PCM1720E evaluation. It also clearly separates confirmed data from parameters that still require confirmation from the complete manufacturer datasheet.
PCM1723E - 24-Bit 96kHz Stereo DAC | Texas Instruments
The Texas Instruments PCM1723E is a 24-bit stereo audio digital-to-analog converter with a 96 kHz maximum sampling rate, integrated phase-locked loop, digital interpolation filter, and analog output amplifier in a 24-pin SSOP package. It accepts 16-, 20-, or 24-bit input data in normal or I2S formats and supports sampling rates from 16 kHz through 96 kHz. The integrated PLL derives either 256fS or 384fS system clock from an external 27 MHz reference frequency. An audio DAC is a semiconductor that converts digital audio samples into analog voltage signals suitable for headphone, line, or power-amplifier inputs. In the signal-chain hierarchy, PCM1723E is a stereo DAC, which belongs to the broader digital-to-analog converter, audio converter IC, interface IC, and semiconductor categories. Its integrated PLL reduces the need for a separate clock-generation circuit when the system provides the required 27 MHz reference. The PCM1723E accepts several native word lengths and multiple standard sampling rates, making it suitable for consumer audio equipment, computers, televisions, and digital audio systems. According to the supplied manufacturer and distributor information, it accepts 16-, 20-, or 24-bit data, supports 16, 22.05, 24, 32, 44.1, 48, 64, 88.2, and 96 kHz sampling rates, and provides a 94 dB dynamic-range figure in the available datasheet summary. Internally, the converter uses a third-order Delta-Sigma modulator, a digital interpolation filter, and an analog output amplifier. This architecture converts the digital PCM stream into a pair of analog stereo outputs while the programmable PLL synchronizes the converter to an external reference. The PCM1723 family description also identifies 96 dB SNR for PCM1723E, providing a more useful system-level indication than bit depth alone. Typical uses include DVD and CD player analog outputs, digital television audio, personal-computer multimedia systems, home-theater equipment, and other consumer electronics requiring two-channel audio playback. The 24-pin SSOP package also supports compact board layouts, although its lead pitch and thermal behavior must be considered during PCB assembly. When designing around the PCM1723E, provide the required external 27 MHz reference and route it cleanly to the device. Confirm that the audio master clock, serial data, and I2S or normal-format timing meet the selected sample-rate requirements. Decoupling and analog-output grounding should follow the layout guidance in the manufacturer datasheet to preserve converter performance. This product record consolidates manufacturer specifications, distributor pricing, sourcing data, and verified family references into an engineer-focused comparison. It also distinguishes the directly evidenced PCM1723E/2K variant from speculative replacements, preventing a package-only assumption from being presented as guaranteed pin compatibility.
PCM1725D - 16-Bit 96kHz Stereo DAC | Texas Instruments
The Texas Instruments PCM1725D is a 16-bit stereo audio digital-to-analog converter with a maximum sampling rate of 96kHz and an I2S serial interface, packaged in a 14-SOIC package. According to the Texas Instruments product page, the device provides 97dB signal-to-noise ratio and includes a digital filter and output amplifier as part of the complete stereo DAC signal chain. An audio DAC is a converter that transforms digital PCM audio samples into continuous analog voltage signals suitable for headphone, speaker, mixer, or line-level amplification. The PCM1725D belongs to the broader digital-to-analog converter category, where the ADC/DAC hierarchy serves as the interface between digital signal processing and the analog audio domain. Its serial interface reduces the number of data connections required when connecting to an audio processor. The primary characteristics are 16-bit resolution, 96kHz maximum sampling, I2S data transfer, and a 14-SOIC package. Supplier listings also describe the device as a complete stereo DAC with an integrated digital filter and output amplifier, eliminating the need to describe those functional blocks as separate external devices. These features support consumer and industrial audio systems requiring a conventional high-resolution serial DAC architecture. Texas Instruments identifies the PCM1725 family as a 97dB-SNR stereo DAC, while one distributor datasheet listing states 95dB dynamic range. These figures describe different performance quantities and should not be treated as interchangeable measurements. The verified operating-temperature listing is -25°C to 85°C, and the package is identified as a 14-SOIC measuring 0.154 inch, or 3.90mm, in width. Typical uses include digital audio playback, multimedia equipment, audio acquisition, active speaker systems, and external digital-to-analog conversion. In these systems, the PCM1725D accepts digital audio from an audio codec or processor and produces left and right analog outputs. A downstream amplifier is still required to drive speakers or headphones at useful output levels. Designers should confirm the required digital-audio format, sample rate, supply arrangement, analog output implementation, and PCB land pattern from the manufacturer datasheet before layout. The 14-SOIC footprint and single-supply listing should be treated as the starting point for schematic capture, while detailed pin names, exposed conditions, and application-specific decoupling values require verification against the official documentation.
PCM1725U - 16-Bit Stereo 96kHz Audio DAC | Texas Instruments
Texas Instruments PCM1725U is a 16-bit stereo audio digital-to-analog converter with 97 dB signal-to-noise ratio, a maximum sampling rate of 96 kS/s, an I2S-compatible serial interface, and a 14-pin SOIC package. The device operates from a single 5 V supply, with the supplied data specifying a 4.5 V to 5.5 V operating range. Its delta-sigma conversion architecture produces analog stereo output from digital audio data while supporting the sample rates commonly required by CD, consumer audio, communications, and embedded audiovisual systems. An audio DAC is a mixed-signal semiconductor that converts PCM-coded digital audio into left- and right-channel analog voltage signals. In the product hierarchy, PCM1725U is a stereo audio DAC within the ADC/DAC category, which combines digital signal processing, conversion technology, and analog output circuitry. The I2S interface carries framed audio data and clock signals between a digital audio source and the converter, while the DAC reconstructs continuous analog waveforms for subsequent amplification or line-level output. The PCM1725U's headline specifications are 16-bit resolution, 96 kS/s sampling, 97 dB SNR, stereo output, and a 4.5 V to 5.5 V single-supply range. The 97 dB SNR rating is particularly useful when selecting a DAC for audio paths where quantization and conversion noise can affect perceived signal quality. The 96 kS/s maximum sampling rate supports higher-rate digital audio sources, including 48 kS/s and 88.2 kS/s standard-rate material and 96 kS/s high-resolution streams. The delta-sigma modulator is the core conversion technique used in this device. Digital audio samples enter through the serial interface, where the delta-sigma modulation process reduces unwanted quantization noise within the signal bandwidth. The resulting analog outputs are intended to be conditioned by a suitable reconstruction and output stage. This architecture supports the stated 16-bit data resolution and 97 dB SNR while maintaining a conventional serial-audio interface. Typical uses include digital audio player subsystems, USB or network-audio decoding, CD player output stages, industrial audio consoles, and communication equipment. The stereo format supports simultaneous left and right outputs, while the I2S interface simplifies connection to audio processors, DSPs, and microcontrollers that provide compatible serial data and clocks. The single 5 V supply also reduces the number of external rails required when the surrounding system already operates around 5 V. A key implementation consideration is preserving the quality of the digital and analog paths around the converter. Place the PCM1725U close enough to the source interface for clean clock and data routing, and follow the manufacturer reference layout and component-selection guidance for decoupling, output filtering, and grounding. Because the available verified data does not expose the full pin table, output-current limits, or recommended external-component values, those details should be confirmed in the official PCM1725 datasheet before layout release. This page combines the verified 16-bit, 97 dB, 96 kS/s, I2S, supply-range, and package facts with practical application guidance, verified-source links, and a transparent assessment of the available drop-in cross-reference data. It is intended to help engineers identify whether the PCM1725U matches a stereo DAC requirement without obscuring unspecified electrical details.
PCM1727E - 24-Bit 96kHz Stereo DAC with Dual PLL | TI
The Texas Instruments PCM1727E is a stereo digital-to-analog converter with 24-bit input data, a 96 kHz maximum sampling rate, I2S support, and a programmable dual PLL in a 24-pin SSOP package. It provides 92 dB dynamic range and integrates a complete stereo DAC, digital filter, and output amplifier for audio signal conversion. An audio DAC is a semiconductor that converts digital audio samples into an analog voltage waveform suitable for amplification and loudspeaker output. The PCM1727E belongs to the broader digital-to-analog converter hierarchy, where delta-sigma conversion, digital filtering, clock recovery, and analog output circuitry combine to support high-fidelity audio playback. The principal features include support for 24-bit input data, multiple sampling frequencies with a stated maximum of 96 kHz, 92 dB dynamic range, and a programmable dual PLL. The PLL architecture provides clock-related flexibility for systems receiving audio data from an asynchronous or otherwise differently referenced source. The integrated stereo output path reduces the number of external analog stages required in a basic DAC design. The PCM1727E accepts 24-bit digital audio data through I2S. Its integrated digital filter and output amplifier make the device suitable for compact stereo audio systems where the converter must operate from a single supply and connect to a downstream line or headphone amplifier. The programmable dual PLL is especially useful when the digital audio source and converter require separate or adjustable clock domains. Typical uses include CD and DVD playback, digital audio mixers, active speakers, home-theater equipment, professional audio interfaces, and embedded audio systems. The device can serve as the final stereo conversion stage when a digital source produces I2S audio and the analog output is intended for a line-level amplifier or other downstream audio path. Designers should verify the datasheet’s recommended input, output, filtering, and bypass connections before layout. Because the provided verified data does not include the complete pin mapping or electrical limits, pin assignments, supply voltage, analog output level, and decoupling values must be confirmed directly in the manufacturer datasheet rather than inferred from the product listings. This product record combines the verified 24-bit, 96 kHz, 92 dB, I2S, dual-PLL, and 24-pin SSOP characteristics with practical selection guidance, source traceability, and honest identification of electrical details that still require datasheet confirmation.
PCM1728E - 24-Bit 96kHz Stereo Audio DAC | Texas Instruments
Texas Instruments PCM1728E is a 24-bit, 96kHz sampling CMOS delta-sigma stereo digital-to-analog converter designed for mid- to high-grade digital audio applications. The device provides two audio DAC channels, I2S-compatible digital audio input, 106dB SNR, and a 28-pin SSOP package. According to the Texas Instruments PCM1728 datasheet, the PCM1728 uses an enhanced multi-level delta-sigma modulator architecture that improves dynamic performance and reduces jitter sensitivity in practical audio systems. Its internal digital filter operates at 8X oversampling when the sampling frequency is 96kHz. 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.
PCM1730E - 24-Bit 192kHz Stereo DAC | Texas Instruments
The Texas Instruments PCM1730E is a 24-bit, 192 kHz sampling stereo digital-to-analog converter with balanced current outputs, housed in a 28-lead SSOP package. It uses advanced segment DAC architecture to provide strong dynamic performance and improved tolerance to clock jitter, making it suitable for professional audio, consumer audio, and digital playback systems. A digital-to-analog converter, or DAC, converts digital audio samples into an analog voltage or current representation. The PCM1730E belongs to the DAC hierarchy within ADC/DAC and signal-conversion integrated circuits. Unlike a digital signal processor or codec, it performs the final conversion from a digital audio stream to analog stereo outputs. Its balanced current-output architecture provides two complementary channels and can simplify the design of high-performance analog output stages. The PCM1730E supports 24-bit audio data at sampling rates up to 192 kHz. The supplied distributor data reports typical dynamic range and signal-to-noise ratio of 117 dB, typical THD+N of 0.0004%, and a full-scale differential current output of 2.2 Vrms at the post amplifier. These figures make the converter relevant to applications where low distortion and high dynamic range are more important than low cost or minimal package size. Advanced segment DAC architecture is the central technical feature of the device. According to the Texas Instruments product description, this architecture is intended to achieve excellent dynamic performance and improved tolerance to clock jitter. That behavior is particularly useful when the digital audio clock is generated through a divider, PLL, or other system that may increase timing jitter. The converter accepts I2S-format digital audio according to the distributor listing, while the manufacturer describes support circuitry integrated with the stereo DAC core. Typical uses include CD and DVD player output stages, digital mixing consoles, active loudspeaker electronics, USB and network audio interface output sections, and high-fidelity consumer audio equipment. In these systems, the PCM1730E can be paired with a current-to-voltage converter, an audio output amplifier, or a headphone and line-driver stage. The choice of external circuitry must account for output loading, gain, distortion, and the required balanced or single-ended signal path. A critical design consideration is that converter performance depends on the complete analog and digital signal chain, not on the DAC alone. Clean supplies, a low-jitter master clock, correctly implemented digital interfaces, suitable output filtering, and a low-noise post-amplifier help preserve the reported 117 dB dynamic performance. Board layout should keep digital and analog return paths controlled and provide a low-impedance return for every supply pin. This product record combines manufacturer architecture information, distributor specifications, sourcing links, verified data gaps, and engineering-focused design guidance. It also distinguishes verified drop-in alternatives from devices that merely share a package or audio function, preventing a package-level match from being presented as a guaranteed PCB replacement.
PCM1733U - 18-Bit 96 kHz Stereo Audio DAC | Texas Instruments
The Texas Instruments PCM1733U is an 18-bit stereo audio digital-to-analog converter with a maximum sampling rate of 96 kHz, an I2S-compatible digital audio interface, and a 14-pin SOIC (D) package. The device is designed to convert digital audio data into left- and right-channel analog signals for consumer and professional audio equipment, while its 97 dB SNR specification supports high-fidelity signal reproduction. The supplied ordering information identifies PCM1733U as the standard 14-SOIC version of the PCM1733 SoundPlus stereo DAC family. An audio DAC is a semiconductor that accepts digital PCM audio samples and reconstructs their corresponding analog voltages. In the electronic-component hierarchy, an audio DAC belongs to the broader ADC/DAC conversion IC category and ultimately falls within signal-processing semiconductors. This distinction matters because a DAC does not amplify or generate the source recording; it converts encoded digital samples into an analog output that can drive a headphone, line-level, or downstream audio amplification stage. The PCM1733U provides 18-bit resolution, 96 kHz sampling, stereo operation, and an I2S interface. Its 97 dB SNR rating describes the signal-to-noise performance available to downstream analog circuitry. The part is listed with a single 5 V supply and an operating temperature range of -25°C to +85°C in the verified distributor data. Its 14-pin SOIC package supports conventional surface-mount PCB assembly and is compatible with automated pick-and-place and reflow processes. At the digital side, the PCM1733U accepts serial audio data through its I2S interface, reducing the number of interconnects required compared with a parallel audio converter. The 18-bit word length provides finer numerical granularity than a 16-bit converter, while 96 kHz supports the stated sampling rate required by CD-quality audio formats. At the analog side, the converter produces differential stereo outputs, allowing the output network and audio amplifier to reject common-mode disturbances when the circuit is designed accordingly. Typical applications include stereo CD and DVD playback, digital audio receivers, mini-disc systems, home-theater equipment, active speakers, and other consumer audio products. In each application, the PCM1733U can serve as the final digital-to-analog conversion stage before a low-noise line amplifier or headphone driver. A complete design must still provide suitable clocking, decoupled analog and digital supplies, a correctly designed reconstruction or output filter, and short signal paths to minimize noise pickup. For PCB implementation, keep the digital interface traces away from the analog outputs and place input, output, and bypass capacitors close to their associated pins. Verify the supported master-clock and sample-rate requirements against the manufacturer datasheet before fixing system clock architecture. If output circuitry differs between the original design and a replacement candidate, evaluate DC offset, full-scale amplitude, and filter response rather than assuming that the same package guarantees identical behavior. This product data consolidates the verified manufacturer and distributor information, provides application-specific engineering context, and separates documented specifications from values that remain unavailable. It also highlights the main substitution risk: a 14-pin SOIC footprint alone does not prove that every stereo DAC is pin-to-pin, clock-compatible, and output-compatible with the PCM1733U.
PCM1737E - 24-Bit 192kHz Stereo DAC | Texas Instruments
Texas Instruments PCM1737E is a 24-bit, 192kHz sampling stereo digital-to-analog converter with 106dB SNR, enhanced multi-level delta-sigma architecture, and I2S digital audio input. The device is offered in a 28-pin SSOP package identified as DB by Texas Instruments. An audio DAC is an interface integrated circuit that converts digital audio samples into left- and right-channel analog voltage signals. Within the broader signal-chain hierarchy, a DAC sits between a digital audio source and an analog amplifier or audio output stage. The PCM1737E is designed for high-resolution stereo playback where 24-bit word length, 192kHz sampling support, and low-noise reconstruction are important. Key features include 24-bit resolution, sampling rates up to 192kHz, 106dB signal-to-noise ratio, stereo output, and I2S-compatible digital audio data input. Its SoundPlus branding identifies the device as an enhanced multi-level, delta-sigma audio converter. The 28-pin SSOP package provides a surface-mount option for compact consumer and professional audio equipment. Technically, the PCM1737E uses an enhanced multi-level delta-sigma conversion structure to reconstruct analog audio from digital PCM samples. This architecture supports high-resolution audio while maintaining the straightforward digital and analog interfaces expected from a dedicated stereo DAC. The verified manufacturer information identifies the PCM1737 family as a 24-bit converter capable of 192kHz sampling, with a specified SNR of 106dB. Typical uses include CD and DVD player analog-output stages, digital audio amplifiers, home-theater receivers, professional audio equipment, and other stereo systems that accept I2S audio data. In these systems, the PCM1737E can receive digital audio from a decoder or audio processor and provide differential or single-ended analog outputs to subsequent amplification circuitry, subject to the complete manufacturer application configuration. A primary design consideration is verifying the exact package pinout, analog output configuration, digital interface timing, and required external components against the manufacturer datasheet before layout. Because the supplied web results confirm the 28-pin SSOP package but do not expose the complete numbered pin table, no pin assignments are asserted here. PCB design should preserve the manufacturer's recommended grounding, decoupling, and analog-output layout practices. This product record combines verified manufacturer specifications, distributor identification, packaging information, and carefully qualified replacement guidance. It also separates confirmed drop-in findings from packaging-only ordering variants so engineers can assess board-level interchangeability without confusing reel or carrier codes with distinct converter designs.
PCM1738E - 24-Bit 200kHz Stereo Audio DAC | Texas Instruments
The Texas Instruments PCM1738E is a 24-bit stereo audio digital-to-analog converter (DAC) supporting sampling rates up to 200 kHz in a 28-pin SSOP package. The device uses CMOS monolithic integrated-circuit technology and an advanced segment DAC architecture designed for high-performance audio and multimedia signal conversion. According to the Texas Instruments PCM1738 product page, the converter includes two stereo DAC channels, support circuitry, and balanced current outputs. The balanced-output architecture allows the converter to drive external audio stages through an appropriate output network. The PCM1738E is supplied in the 28-SSOP package, matching the PCM1738 family identified by DigiKey and Mouser. The converter operates from a single 4.75 V to 5.25 V supply according to the verified distributor data, and the PCM1738 family is specified for 192-kHz sampling in the manufacturer product description. Its advanced segment DAC architecture is intended to provide excellent dynamic performance and improved tolerance to clock jitter, making the device useful in digital audio equipment, multimedia systems, and other applications requiring accurate stereo reconstruction. The PCM1738E is also associated with the PCM1738E/2K ordering code shown in the verified distributor data; the /2K designation is an ordering/package-related identifier rather than a separate functional variant. When selecting the device, engineers should confirm the complete clock, digital-interface, analog-output, and power-supply requirements against the manufacturer datasheet. The PCM1738E is intended for designs requiring a high-resolution stereo DAC rather than a low-cost consumer-output codec.
PCM1739E - 24-Bit 192kHz Stereo Audio DAC | Texas Instruments
Texas Instruments PCM1739E is a 24-bit, 192kHz sampling enhanced multi-level delta-sigma stereo digital-to-analog converter with 105dB typical signal-to-noise ratio, supplied in a 28-pin SSOP package. It converts two digital audio channels into left and right analog outputs and uses SoundPlus technology for high-fidelity playback systems. A digital-to-analog converter, or DAC, is a semiconductor that transforms digital audio samples into continuous analog voltage signals. In the signal-chain hierarchy, the PCM1739E belongs to the ADC/DAC class within interface ICs, where it follows the digital audio source and precedes an analog output amplifier, headphone driver, mixer, or loudspeaker system. Its delta-sigma architecture and multi-level quantization are intended to reduce quantization noise while preserving high-resolution audio data. The verified product information identifies a 24-bit resolution, maximum sampling rate of 192kHz, 105dB typical SNR, and stereo output configuration. A related manufacturer datasheet listing gives 106dB typical dynamic range, 105dB typical SNR, 0.0015% typical THD+N with a 5V supply, 3.1Vpk-pk typical full-scale output, 4-times and 8-times oversampling, a 0.454fS digital-filter passband, and -82dB stopband attenuation. PCM1739E is appropriate for consumer-audio equipment, USB and digital-audio interface boards, active speakers, compact home-theater systems, and audio conversion modules requiring simultaneous left and right outputs. Its 192kHz sampling capability supports high-resolution source material, while the stated SNR and distortion figures establish the signal-quality baseline for the analog output stage. Designers should treat the DAC output as a line-level signal requiring suitable analog amplification and output coupling. The manufacturer datasheet indicates analog testing with a load of 5kΩ or larger and an AC-coupled output. Decoupling, grounding, clock-interface layout, and output-filter implementation therefore remain important to preserving the converter's measured performance. This page combines the verified Texas Instruments product information, distributor listings, and cross-reference data with practical selection guidance. It also distinguishes documented drop-in candidates from merely similar audio converters, helping engineers evaluate replacement risk before modifying an existing 28-pin SSOP PCB.
PCM1740E - 24-Bit 96kHz Stereo DAC with PLL | Texas Instruments
The Texas Instruments PCM1740E is a 24-bit stereo audio digital-to-analog converter with a 96 kHz sampling rate, an on-chip phase-locked loop, and a voltage-controlled crystal oscillator in a 24-pin SSOP package. It accepts I2S digital audio and is designed primarily for set-top box playback systems requiring a stable 27 MHz master clock and support for multiple sampling rates. An audio DAC is a signal-conversion integrated circuit that transforms digital PCM audio samples into left and right analog voltage signals for subsequent low-pass filtering and line-level amplification. Within the product hierarchy, PCM1740E is an audio DAC, a digital-to-analog converter, a data converter IC, and a semiconductor designed for digital audio playback. The PCM1740E combines a multibit delta-sigma stereo DAC with an integrated PLL and VCXO. Its 24-bit interface supports sampling rates up to 96 kHz, while the VCXO supplies a precision-tunable 27 MHz clock source. Integrating these functions reduces the need for a separate clock-generation circuit in systems where the DAC must support multiple audio-sampling frequencies. The converter is intended for consumer audio equipment, particularly set-top boxes and similar digital playback products. Digital input is accepted through a serial audio interface, and the converter generates stereo analog outputs suitable for an analog reconstruction filter and line-output stage. Its architecture prioritizes integration, clock control, and compact implementation rather than a separately adjustable analog output architecture. Typical uses include cable or satellite set-top boxes, digital audio playback modules, stereo audio source equipment, and embedded consumer systems accepting I2S data. In these systems, the integrated PLL can support sampling-rate adaptation while the VCXO provides the specified clock foundation for stable digital-to-analog conversion. Designers should follow the manufacturer's recommended input, output, clock, filtering, decoupling, and layout arrangements. The complete 24-pin pinout and detailed electrical limits are not present in the supplied search extracts, so this page does not infer pin assignments or unverified analog-output values. Confirm the latest manufacturer datasheet before final routing and impedance selection. This page consolidates manufacturer descriptions, distributor availability, package information, and verified cross-reference results. It also distinguishes confirmed drop-in candidates from broader functional equivalents so engineers can make sourcing and PCB-compatibility decisions without treating similar audio converters as automatically interchangeable.
PCM1741E - Stereo 24-Bit Audio DAC | Texas Instruments
The Texas Instruments PCM1741E is a stereo 24-bit audio digital-to-analog converter with a 2.7 V to 3.6 V supply range, 100 kHz sampling-rate capability, and an I2S-compatible digital interface. The device is packaged in a surface-mount SSOP-16 package. It combines two DAC channels and support circuitry in one CMOS monolithic IC for compact digital audio playback systems. An audio DAC is a data-converter IC that converts digital audio samples into analog voltage signals suitable for headphone, line-level, or downstream power-amplifier stages. In the electronic-component hierarchy, the PCM1741E is an audio DAC, a digital-to-analog converter, a data-converter IC, and a member of the broader semiconductor and signal-processing device categories. Its stereo architecture supports two audio channels while reducing the number of separate converter packages required. The PCM1741E uses Texas Instruments’ enhanced multilevel delta-sigma architecture. The converter architecture employs fourth-order noise shaping and 8-level amplitude quantization to provide excellent dynamic performance and improved tolerance. The verified distributor data identifies the resolution as 24 bits, the interface as I2S, the channel count as two, and the maximum sampling rate as 100 kHz. Its operating temperature range is -25°C to +85°C. A 2.7 V to 3.6 V single-supply operating range supports low-voltage portable and embedded audio designs. The PCM1741E accepts both analog and digital supply connections, and the digital interface enables connection to an audio codec, processor, digital audio transceiver, or other source capable of supplying the required I2S data. Exact clock, output-filter, analog-output, and absolute-noise specifications not exposed by the verified search data remain marked as data needed rather than being inferred. Typical applications include portable digital audio players, compact consumer-audio equipment, multimedia terminals, USB or network audio accessories, and other stereo playback systems operating from a 3.3 V rail. The 24-bit resolution and 100 kHz sampling capability suit digital audio paths where compactness and integrated stereo conversion are important. A suitable headroom amplifier, reconstruction filter, and output-routing network are still required where the analog output must drive a higher-power load. The primary design consideration is analog-output implementation. The PCM1741E is a converter, not a power amplifier, so its output network must be designed around the verified interface and application requirements. Layout should separate sensitive analog routing from digital clock and data paths, use a low-noise 3.3 V supply, and follow the manufacturer datasheet for bypassing and output filtering once those circuit details are available. This product page consolidates the verified manufacturer, distributor, pricing, package, interface, channel-count, and resolution information. It also identifies pin-compatible family alternatives, highlights missing technical fields explicitly, and provides selection and design guidance beyond the basic distributor listing.
PCM1742E - 24-Bit Stereo Audio DAC | Texas Instruments
Texas Instruments PCM1742E is a CMOS monolithic stereo digital-to-analog converter with 24-bit resolution, support for sampling rates up to 200 kHz, an I2S digital audio interface, and a 16-pin SSOP package. The integrated converter uses an enhanced multilevel delta-sigma architecture with fourth-order noise shaping and 8-level amplitude quantization to provide high dynamic performance for audio signal chains. An audio DAC is a mixed-signal semiconductor that converts digital audio samples into continuous analog voltage signals suitable for amplifiers, speakers, headphones, or audio-capture equipment. The PCM1742E belongs to the broader DAC, data-converter, and signal-processing IC hierarchy. Its stereo topology integrates two converter channels and associated support circuitry, reducing the component count required for a conventional two-channel audio output stage. Key features include 24-bit conversion, 200 kHz sampling support as listed by DigiKey, 192 kHz sampling support in the linked datasheet description, fourth-order noise shaping, and 8-level amplitude quantization. The I2S interface supports connection to digital audio processors, while the 16-pin SSOP package provides a compact surface-mount option. The listed operating temperature is -25°C to 85°C. The enhanced multilevel delta-sigma architecture is central to the PCM1742E's performance. Noise shaping moves quantization noise away from the most perceptually important audio band, while multilevel quantization reduces the demands placed on the internal digital-to-analog conversion process. These techniques support improved dynamic performance and tolerance to clock and implementation variation compared with simpler first-order delta-sigma converters. Typical uses include consumer and professional digital audio equipment, powered speakers, audio network endpoints, test and measurement equipment, and embedded systems that require a stereo I2S-to-analog conversion stage. The device is also suitable for prototypes that need a compact two-channel DAC without a separate external converter for each output. Designers should provide suitable analog and digital supply decoupling, connect the I2S clock and data signals correctly, and account for output filtering when evaluating the analog signal path. The available verified data does not include a complete pin table, recommended external component values, or a verified unit price, so those details require confirmation in the manufacturer datasheet before layout and sourcing decisions. This page combines verified manufacturer and distributor specifications, verified-source limitations, package information, pricing availability, and replacement guidance with practical application and design notes. It distinguishes documented drop-in-family options from parts that may require board-level changes, helping engineers evaluate the PCM1742E without treating generic cross-reference results as guaranteed pin compatibility.
PCM1744U - 24-Bit 96kHz Stereo I2S DAC | Texas Instruments
The Texas Instruments PCM1744U is a 24-bit, two-channel stereo digital-to-analog converter with a 96 kHz maximum sampling rate, an I2S digital audio interface, and a 14-pin SOIC package. The device provides a 97 dB signal-to-noise ratio according to the manufacturer product page, making it suitable for high-fidelity audio playback and analog audio signal generation. An audio DAC is a semiconductor that converts digital PCM audio samples into continuous analog voltage signals. The PCM1744U belongs to the digital-to-analog converter hierarchy within audio interface ICs, where it bridges a digital audio processor and an analog amplification or line-output stage. Its I2S interface transfers framed stereo audio data using separate clock, data, and word-selection signals. Key features include 24-bit resolution, support for sampling rates up to 96 kHz, two audio output channels, and a 97 dB SNR rating. The 14-pin SOIC package supports conventional surface-mount PCB assembly. These specifications align with CD-quality and related digital audio paths where the source data resolution and required bandwidth fit within the converter's supported range. The PCM1744U is designed for stereo audio systems that require a digital input and analog output without using the device as a general-purpose signal generator. Its 24-bit interface preserves a large dynamic range, while the 96 kHz sampling-rate ceiling supports common high-resolution audio formats. The 97 dB SNR specification provides a concise indication of the converter's signal quality relative to quantization noise and other internal noise sources. Typical uses include consumer audio equipment, digital media systems, multichannel audio processors, powered speakers, sound cards, and embedded audio products. In these applications, the PCM1744U accepts I2S audio from a codec, DSP, or application processor and produces two analog outputs that can feed an op-amp buffer, line driver, headphone amplifier, or speaker amplifier stage. PCB design should provide a stable low-noise supply and short analog output routing. Input and output capacitors, grounding, and the analog signal path must follow the layout guidance in the manufacturer datasheet. Because the verified snippets do not provide exact capacitor values, supply-current limits, analog output swing, or pin names, those implementation details should not be inferred from generic PCM1744-family designs. This page consolidates the verified manufacturer specifications, distributor availability links, package information, replacement constraints, and application guidance for PCM1744U. It distinguishes confirmed facts from parameters that still require direct confirmation in the official datasheet, helping engineers evaluate the device without relying on unverified cross-reference claims.
PCM1748E - 24-Bit Stereo Audio DAC | Texas Instruments
The Texas Instruments PCM1748E is a CMOS, monolithic, two-channel digital-to-analog converter IC with support circuitry for stereo digital audio applications. The device uses a 24-bit enhanced multilevel delta-sigma DAC architecture with fourth-order noise shaping and 8-level amplitude quantization, providing a compact solution for digital-to-analog conversion in consumer, communications, and embedded audio systems. It is supplied in a 16-pin SSOP package according to the verified Texas Instruments product information. 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.
PCM1750U - Dual 18-Bit Audio ADC | Texas Instruments | SOIC-28
The Texas Instruments PCM1750U is a dual-channel, 18-bit monolithic audio analog-to-digital converter using successive-approximation conversion and a serial interface, housed in a 28-pin SOIC package. The converter is designed for applications requiring simultaneous digital capture of two audio channels while retaining an 18-bit resolution and a compact surface-mount footprint. An audio ADC is a data-converter IC that converts left- and right-channel analog audio signals into digital sample data for transmission, storage, processing, or playback. The PCM1750U belongs to the broader ADC/DAC category, with its application-specific role defined by audio signal acquisition. It is a dual CMOS device, allowing two analog audio inputs to be represented within one package rather than requiring two separate converter packages. The principal verified characteristics are 18-bit resolution, a dual-channel architecture, successive-approximation conversion, and a serial output format. These features make the PCM1750U suitable for digital audio recording, stereo capture, multimedia equipment, and other systems that require two synchronized audio conversion channels. The distributor classification identifies the device as an audio ADC in a 28-pin SOIC package. Successive-approximation conversion implements a binary-search sequence that progressively resolves the sampled input voltage. This architecture is appropriate for audio systems requiring deterministic serial data transfer and practical converter performance. Because no complete manufacturer datasheet was included in the verified dataset, the clock frequency, conversion rate, dynamic range, full-scale range, channel isolation, and analog input impedance are not independently stated here and must be confirmed in the manufacturer datasheet. Typical implementation places the PCM1750U after stereo input conditioning, with anti-alias filtering or other analog front-end stages ahead of its analog inputs. The serial interface then connects to a digital audio processor, audio codec, microcontroller, or logic device capable of receiving the converter's data, clock, and control signals. PCB layout should keep analog and digital return paths separated, minimize digital clock coupling into the analog inputs, and provide stable bypassing near the device. The principal design trade-off is that the PCM1750U integrates only the conversion function shown in the verified information; system-level audio performance also depends on the input amplifier, anti-alias filter, reference implementation, clock source, grounding, and software configuration. Before finalizing a design, verify timing, power-supply requirements, analog input range, and pin functions against the current Texas Instruments datasheet. This page consolidates verified distributor information, source traceability, replacement guidance, and engineering-focused selection notes. It also distinguishes confirmed PCM1750U characteristics from parameters that still require datasheet verification, providing a practical basis for sourcing and early design assessment without inventing unavailable electrical details.