AK5556VN - 32-Bit 6-Channel Audio ADC | Asahi Kasei
MPN: AK5556VN ✗ End of LifeAK5556VN Overview
An audio analog-to-digital converter is a specialized data-converter IC that converts multiple differential analog audio inputs into high-resolution digital samples. In the broader hierarchy, the AK5556VN is an ADC, a data-converter IC, and a semiconductor used in digital audio and signal-processing systems. Its six-channel differential architecture is intended to capture several balanced audio channels with consistent conversion performance and reduced channel-count complexity.
The principal specifications shown in the verified data are 32-bit resolution, six ADC channels, a maximum sampling frequency of 768 kHz, 115 dB dynamic range, and 106 dB SN+D. Four integrated digital filters can be selected according to the desired sound-quality preference. The device supports TDM audio formats for connection to a DSP, while DSD output support extends its use to high-resolution digital-audio systems.
The AK5556VN uses a differential-input architecture, allowing balanced analog sources to be connected to the converter and helping reject common-mode noise when the circuit is implemented with suitable analog signal-chain design. The six-channel arrangement makes it suitable for surround mixing, recording, monitoring, and multichannel conversion systems. Channel summation can improve the claimed dynamic range to 118 dB in suitable multi-channel operation, according to the manufacturer datasheet information provided in the verified sources.
Typical applications include professional mixers, multi-channel recorders, studio monitors, broadcast audio equipment, digital audio workstations, and embedded DSP audio-capture systems. Its TDM support can simplify connection to a DSP that accepts time-division-multiplexed audio data. In systems using DSD, the converter can provide output up to 11.2 MHz, although the complete signal chain must support the associated data rate and clocking requirements.
Designers should verify the complete AK5556VN pinout, exposed-pad connection, analog input routing, reference-voltage requirements, clock configuration, digital interface mode, and power-supply sequencing against the manufacturer datasheet before layout. The 64-QFN package also requires a suitable thermal and grounding strategy, particularly when operating at high sampling rates or with high channel utilization.
This product data consolidates the verified 32-bit, 768 kHz, six-channel, 115 dB dynamic-range, 106 dB SN+D, PCM, TDM, and DSD information, compares the documented feature set, and highlights practical application and sourcing considerations beyond a basic distributor listing.
Drop-in alternatives for AK5556VN — 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 AK5556VN (same form factor and footprint) — differing in Dynamic Range, Number of Channels, Package.
No drop-in alternatives available for this product.
Request AlternativesAK5556VN Maximum Ratings & Electrical Characteristics
| ADC Resolution | 32 bit |
| Number of Channels | 6 channels |
| Input Architecture | Differential input |
| Maximum Sampling Frequency | 768 kHz |
| Dynamic Range | 115 dB |
| Signal-to-Noise Plus Distortion | 106 dB |
| Channel-Summation Dynamic Range | 118 dB |
| Integrated Digital Filters | 4 selectable types |
| Digital Audio Interface | PCM |
| Multichannel Interface | TDM |
| DSD Output Support | Up to 11.2 MHz |
| Package | 64-QFN (9 x 9 mm) |
| Exposed Pad | QFN-64-EP (9 x 9 mm) |
| Mounting Type | Surface mount |
| Digital Supply Voltage Range | 1.7 V to 1.98 V |
| Analog Supply Voltage Range | 3 V to 3.6 V |
| Alternative Supply Voltage Range | 5 V |
AK5556VN 64-qfn (9 x 9 mm) Pin Configuration Guide
Pin configuration for AK5556VN (64-qfn (9 x 9 mm) 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 AK5556VN.
Refer to the datasheet for full pin configuration.
Typical Applications
AK5556VN is suitable for 6 applications: Professional Digital Mixing Console, Multichannel Studio Recorder, DSP-Connected Audio Capture, High-Resolution DSD Audio System, Broadcast and Live-Audio Monitoring, Consumer and Professional Audio Hub.
Professional Digital Mixing Console
The AK5556VN fits a professional mixing console because six differential inputs can feed a DSP through TDM while retaining 32-bit conversion and a maximum sampling frequency of 768 kHz. A console can route balanced microphone, line, or instrument inputs through the converter and select among four digital-filter characteristics according to the required tone and response. The converter's 115 dB dynamic range and 106 dB SN+D are useful for preserving low-level program material across a wide mix. The engineering trade-off is board complexity: separate analog and digital supply domains, exposed-pad thermal handling, and a carefully designed clock and data interface are required. Lifecycle status should also be checked before a new console platform is committed.
Recommended
Multichannel Studio Recorder
A studio recorder can use the AK5556VN to capture up to six balanced channels through a single converter instead of installing multiple discrete ADC packages. Its 32-bit architecture and 768 kHz maximum sampling rate support high-resolution recording workflows, while the four selectable digital filters provide different response choices for different program-material and monitoring priorities. TDM output reduces the number of physical data connections needed when feeding a recording DSP. Layout must preserve the separation between the 1.7 V to 1.98 V digital domain and the 3 V to 3.6 V analog domain, with the exposed pad and thermal design verified from the datasheet.
Recommended
DSP-Connected Audio Capture
The AK5556VN is appropriate for embedded audio-capture products whose DSP accepts TDM data, because multiple converted channels can share one time-division-multiplexed interface. The converter's six differential inputs simplify analog channel balancing, and its 32-bit, 768 kHz capability allows the host processor to support high-resolution audio when the system clocking and DSP throughput are adequate. The primary implementation benefit is reduced component count and a direct DSP data path. The primary risk is integration: TDM timing, master-clock generation, supported data widths, reset behavior, and supply sequencing must all be checked against the complete manufacturer documentation before firmware and board sign-off.
Recommended
High-Resolution DSD Audio System
The AK5556VN supports DSD output up to 11.2 MHz, making it relevant to high-resolution digital-audio systems that go beyond conventional PCM playback requirements. Its six differential inputs allow multiple source channels to be converted while the selected digital interface carries the resulting data toward a capable DSP or digital transport stage. The benefit is a single high-performance converter supporting both PCM and DSD-oriented operation. The trade-off is that a nominal 11.2 MHz DSD capability does not create a complete DSD ecosystem by itself: clocks, filter configuration, downstream decoding, data-line integrity, and the host processor must all support the selected mode.
Recommended
Broadcast and Live-Audio Monitoring
For broadcast consoles and live-audio monitoring systems, the AK5556VN provides six balanced conversion channels with 115 dB dynamic range, supporting low-level program capture without assigning a separate ADC to every input. TDM simplifies interconnections to a system DSP, and the four filter options let engineers select a preferred frequency response for different monitoring or broadcast requirements. Because the converter is no longer assumed to be a currently active catalog device, engineers should confirm lifecycle and last-time-buy conditions before using it in a new platform. Any migration plan should preserve analog input range, clock behavior, digital format, and 64-QFN land pattern rather than relying on package similarity alone.
Recommended
Consumer and Professional Audio Hub
The AK5556VN can serve as the central conversion stage in an audio hub that accepts several balanced analog sources and routes them to a DSP for monitoring, recording, or playback control. Six differential channels provide a practical balance between integration and routing complexity, while 32-bit resolution and 768 kHz sampling support high-quality source capture. The four digital filters allow system-level response tuning without moving conversion into external components. Designers should treat the obsolete status as a procurement constraint, validate supply continuity before launch, and confirm the exact package pinout and exposed-pad connection because the verified excerpts identify the 64-QFN 9 x 9 mm package but do not provide a complete signal table.
Recommended
Recommended Products Summary
Engineering reference data for AK5556VN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | 64-QFN (9 x 9 mm) |
| Brand | Asahi Kasei Microsystems |
| ADC Resolution | 32 bit |
| Number of Channels | 6 channels |
| Maximum Sampling Frequency | 768 kHz |
| Dynamic Range | 115 dB |
| Signal-to-Noise Plus Distortion | 106 dB |
| Integrated Digital Filters | 4 selectable types |
| DSD Output Support | Up to 11.2 MHz |
| Digital Interface | PCM and TDM |
Key Differentiators
- Six-channel differential conversion in one package (vs Lower-channel audio ADC)
- High-resolution and high-speed operation (vs Lower-channel audio ADC)
- Integrated DSP-friendly filter and interface support (vs Converter requiring external filtering)
Design Notes
Keep the AK5556VN analog inputs, reference circuitry, and analog supply connections away from the digital clock, TDM data, and switching-regulator nodes. The verified device supports separate 1.7 V to 1.98 V digital and 3 V to 3.6 V analog supply domains, so return-current planning and decoupling should preserve those boundaries. Place input and reference components close to the corresponding pins, but verify exact pin locations from the manufacturer datasheet before releasing the 64-QFN layout.
Treat the exposed pad as a mandatory thermal and electrical design element rather than an optional copper area. Its connection requirements must be confirmed from the manufacturer datasheet, and the pad should use an uninterrupted thermal-via array where the package drawing allows it. Do not estimate junction temperature or copper performance without the verified thermal data; the supplied excerpts confirm an exposed-pad 64-QFN package but do not provide theta-JA, theta-JC, maximum power dissipation, or ambient limits.
Route TDM data and clock signals as controlled-impedance nets only after the required logic levels, topology, and timing are confirmed. Keep the converter's digital interface away from analog input and reference nodes, use short return paths, and account for connector or DSP trace capacitance where applicable. The verified excerpts identify PCM, TDM, and DSD operation but omit complete clock tables and timing diagrams, so no specific propagation limit or termination value should be assumed without manufacturer data.
Do not assume that another premium audio ADC is a drop-in replacement merely because it has a similar channel count or resolution. The verified AK5578EN comparison does not establish identical pins, dimensions, clocks, supplies, interface timing, or exposed-pad connections. Likewise, the AK5556VN_16 search result is a distinct ordering suffix and was not treated as a substitute or packaging variant. Validate lifecycle, traceability, exact ordering code, and any migration using a manufacturer-confirmed cross-reference.
Compliance Information
The supplied verified snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for the AK5556VN. These fields remain unknown rather than being inferred.
