PCM56U - 16-Bit Serial Audio DAC | Texas Instruments
MPN: PCM56U ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
PCM56U Overview
A digital-to-analog converter, or DAC, converts digital audio samples into a proportional analog voltage or current. A DAC belongs to the ADC/DAC hierarchy, which sits inside data-converter and signal-conversion semiconductors used to connect digital signal-processing systems to analog audio paths. The PCM56U is therefore suited to digital audio engines, CD and digital-audio player analog stages, test equipment, and other systems requiring a discrete high-resolution audio conversion function.
The verified PCM56U data supports a one-channel, 16-bit architecture in a 16-pin SOIC package. Its serial digital input allows a digital audio source to provide successive PCM samples, while the analog output provides the corresponding conversion signal. The manufacturer search result specifically describes the family as a series-input device, making interface timing and data format important parts of system integration.
The PCM56U is available through multiple distributor channels, including DigiKey, Mouser, and Octopart. The manufacturer also provides an official PCM56U part-details page and a datasheet PDF. The retrieved data does not establish the device's lifecycle status, exact input format, dynamic-range value, conversion rate, output type, or full electrical limits; those parameters are therefore not inferred here. Engineers should use the manufacturer datasheet for definitive values before designing a new PCB.
The PCM56U's 16-pin SOIC package makes it relevant to through-hole-style legacy audio boards and repair or upgrade work where an existing footprint is already available. Because the retrieved cross-reference results do not identify a verified same-package, pin-compatible replacement, replacement selection should be treated cautiously. A different DAC with the same resolution is not automatically a drop-in substitute because interface timing, supply rails, reference voltage, analog output topology, and pin assignment must all match.
This page synthesizes the verified distributor identity, manufacturer datasheet links, package information, sourcing references, and cross-reference limitations. It does not convert unverified catalog snippets into unsupported electrical specifications. For purchasing, use the distributor listings and request current price, inventory, lead time, and lifecycle confirmation directly from the supplier. For design-in, download the official PCM56 datasheet and compare every electrical and timing parameter with the target system.
Drop-in alternatives for PCM56U — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PCM56U (same form factor and footprint) — differing in Mounting Type, Package, Resolution.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
No drop-in alternatives available for this product.
Request AlternativesPCM56U Maximum Ratings & Electrical Characteristics
| Device Type | Serial-input digital-to-analog converter |
| Resolution | 16 bit |
| Channel Count | 1 channel |
| Polarity | Bipolar |
| Supply Voltage | 5 V dual supply |
| Package | 16-pin SOIC (DW) |
| Package Type | SOIC |
| Mounting Type | Surface mount |
| Terminal Count | 16 terminals |
| Product Category | Audio D/A converter |
| Data Interface | Serial input |
| Lifecycle Status | NRND per current product-page reference |
PCM56U soic Pin Configuration Guide
Pin configuration for PCM56U (soic package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for PCM56U.
Refer to the datasheet for full pin configuration.
Typical Applications
PCM56U is suitable for 7 applications: Legacy CD-Player Digital Audio Conversion, Digital Audio Player Analog Stage, Precision Audio Measurement Equipment, Professional Audio Monitoring, Digital-to-Analog Evaluation Board, Audio Signal-Chain Conversion Module, Audio Repair and Legacy Equipment Maintenance.
Legacy CD-Player Digital Audio Conversion
The PCM56U is suited to a legacy digital-audio board that requires a 16-bit, one-channel, serial-input DAC stage. Its verified SOIC-16 package is useful when the existing PCB already provides that surface-mount footprint and its original schematic confirms the digital interface and analog network. Installers should verify pin functions, supply rails, clock polarity, data timing, reference voltage, and output loading against the TI datasheet before replacement. The converter should be evaluated together with its reconstruction filter, clock source, reference circuit, and output amplifier; the DAC alone does not determine the final audio bandwidth or distortion.
Recommended
Digital Audio Player Analog Stage
PCM56U can form part of a digital audio player's conversion path when a discrete 16-bit DAC is preferred over an integrated modern audio codec. The verified 16-bit, one-channel, serial-input identity maps naturally to an audio channel, while the SOIC-16 package supports surface-mount assembly. The board still needs a stable reference, suitable clocking, a digital-to-analog interface, and an analog reconstruction or smoothing network. Because the supplied data does not state the exact serial format or output topology, those points require confirmation from the official PCM56 datasheet and the original board schematic.
Recommended
Precision Audio Measurement Equipment
The PCM56U may be used in audio test and measurement equipment that requires a dedicated 16-bit conversion channel with a serial digital interface. Its verified one-channel architecture is useful for generating or converting one analog signal under instrument control, while the surface-mount SOIC package simplifies integration into an instrument PCB. Measurement accuracy still depends on the reference source, clock jitter, analog filter, output buffer, calibration, and board layout. The retrieved sources do not provide dynamic range or conversion-rate values, so instrument specifications must be established from the manufacturer datasheet rather than inferred from the distributor category.
Recommended
Professional Audio Monitoring
PCM56U is relevant to a professional monitoring chain when the design retains a discrete high-resolution DAC architecture. Its verified 16-bit serial-input identity is compatible with the general concept of a dedicated audio conversion stage, while the SOIC-16 package is appropriate for compact surface-mount boards. A professional design should pay close attention to the DAC's reference and output implementation, analog filter topology, channel matching, grounding, and clock-source cleanliness. The supplied evidence does not identify a specific professional application circuit, so final suitability depends on system-level signal-integrity and audio-performance testing.
Recommended
Digital-to-Analog Evaluation Board
PCM56U is appropriate for a small evaluation board intended to study a serial-input, 16-bit, one-channel DAC in a SOIC-16 footprint. The board can expose the digital interface, supply rails, reference network, analog output, and test points while keeping the converter replaceable during legacy design exploration. Designers should not copy an arbitrary SOIC footprint or assume pin compatibility without checking the PCM56 datasheet. Because the retrieved data does not include the full pinout or recommended application schematic, the evaluation board should be designed from the official manufacturer documentation and reviewed for supply sequencing, decoupling, grounding, and analog-output loading.
Recommended
Audio Signal-Chain Conversion Module
PCM56U can be used as the conversion element in a small audio signal-chain module that accepts serial digital audio and presents an analog output for downstream processing. The verified 16-bit, one-channel DAC identity provides a clear function boundary, and the surface-mount SOIC-16 package supports compact PCB construction. A complete module still needs digital isolation or level matching as appropriate, a reference, an analog reconstruction network, and a suitable output buffer. Since the available sources do not confirm the exact logic levels or output architecture, prototype validation and comparison with the official datasheet are mandatory before field deployment.
Recommended
Audio Repair and Legacy Equipment Maintenance
PCM56U is useful when servicing an existing audio product that uses the same PCM56-family function and the verified 16-pin SOIC footprint. The part's NRND status makes it more relevant to maintaining installed equipment than to starting an unrestricted new platform. A repair should compare the original part number, package, pinout, supply arrangement, digital timing, reference voltage, and analog output connection before installation. Because the retrieved web data does not provide a complete verified pin list or a certified drop-in substitute, technicians should avoid improvising replacements and should use the official PCM56 datasheet and the equipment service documentation.
Recommended
Recommended Products Summary
Engineering reference data for PCM56U — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PCM56P |
|---|---|---|
| Package | SOIC-16 | PDIP-16 |
| Brand | Texas Instruments | Texas Instruments |
| Mounting Type | Surface mount | Through-hole package |
Key Differentiators
- Verified surface-mount package (vs PCM56P)
- Verified one-channel audio DAC identity (vs PCM56P)
- Verified serial-input architecture (vs PCM56P)
- Bipolar 5 V dual-supply listing (vs PCM56P)
Design Notes
Use the official PCM56U package drawing to establish the SOIC-16 footprint rather than relying on a generic 16-pin library symbol. Confirm pin 1 orientation, pad lengths, courtyard, solder-mask clearance, and paste-aperture geometry against the manufacturer package information. Because the complete verified pinout is not reproduced in the supplied data, do not infer analog, digital, reference, or supply functions from neighboring pins. Validate the footprint against the original PCB or a manufacturer-approved land pattern before fabrication.
Plan separate, low-impedance connections for the listed 5 V dual supply and follow the manufacturer datasheet for bypass-capacitor recommendations and pin-specific decoupling. Keep digital return currents away from the analog output and reference-return paths. If dual supplies are generated from a common source, verify startup sequencing and ensure that each rail remains within the device's absolute maximum and recommended operating limits. The supplied data does not provide rail tolerances, quiescent current, or decoupling values, so those specifications must be obtained from TI documentation.
Treat the serial input as a timing-sensitive digital interface. Route the data and clock traces with continuous reference planes, minimize stub branches, and control crosstalk from adjacent switching or clock signals. Confirm input levels, data valid timing, clock polarity, and the required serial word format from the PCM56 datasheet; the retrieved sources identify serial input but do not provide enough timing detail for layout dimensions. Prototype measurements should verify setup time, hold time, clock jitter sensitivity, and output stability.
Do not treat PCM56P as a direct PCM56U board replacement because the retrieved comparison identifies SOIC-16 versus PDIP-16 packages. Also do not substitute a generic 16-bit DAC solely by resolution: the interface format, clocking, reference, supply rails, output topology, and pin functions must match. Because PCM56U is NRND in the current product-page reference, new designs should document the legacy risk and evaluate a currently supported device instead of designing around unverified availability.
Compliance Information
The supplied verified results identify the manufacturer datasheet, product page, package, and sourcing listings but do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than inferred.
