WM8761CBGED - 24-Bit 192kHz Stereo DAC | Cirrus Logic
Teilenummer: WM8761CBGED ✗ AbgekündigtWM8761CBGED Übersicht
An audio DAC is a digital-to-analog converter, a specialized interface IC within the ADC/DAC product family and the broader signal-conversion semiconductor hierarchy. Its purpose is to reconstruct continuous analog voltage waveforms from sampled digital audio data. The WM8761 is positioned for consumer and multimedia audio equipment, including DVD systems, home-theater equipment, digital television, and systems receiving decoded AC-3, DTS, or MPEG audio streams.
The WM8761 supports data word lengths from 16 to 24 bits and sampling rates up to 192 kHz. Selectable serial-audio formats give the converter flexibility when connecting to different digital-audio decoders, digital signal processors, or microcontrollers. Digital de-emphasis, mute control, and digital interpolation filtering support practical playback-chain integration. A 14-pin SOIC package also keeps the footprint compact relative to older, larger converter implementations.
Internally, the device combines a serial interface port with digital interpolation filters, multi-bit sigma-delta modulators, and stereo DAC output stages. The interpolation filters prepare the incoming high-rate digital stream for the DAC stages, while the sigma-delta architecture represents the converted signal using high-resolution noise shaping. The Cirrus Logic manufacturer datasheet identifies the WM8761 as a low-cost stereo converter intended for decoded surround-sound and conventional stereo audio playback.
Typical deployments include digital television audio reproduction, DVD-player output, home-theater receiver analog stages, AC-3 and DTS decoder interfaces, and MPEG audio decoder output paths. The I2S interface is particularly useful for digital audio buses, while right-justified and DSP modes accommodate source devices with different data alignment. System designers should match the digital source word length and clocking method to the supported converter configuration.
Circuit implementation requires a stable analog and digital supply arrangement, correct master-clock and serial-audio routing, and output-network selection suited to the next analog stage. The 14-pin package should be checked against the manufacturer pin-description table before assigning PCB nets. Designers must also confirm whether the target channel requires mute, de-emphasis, a particular data format, or an external output filter appropriate to the intended audio bandwidth.
This product page consolidates the manufacturer specifications, ordering information, application context, design cautions, and sourcing workflow for the WM8761CBGED. It also distinguishes the verified discontinued status of the original device from the separate task of finding a genuinely pin-compatible replacement, avoiding unsupported assumptions about substitute ICs.
Drop-in-Alternativen für WM8761CBGED – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Für dieses Produkt sind keine Drop-in-Alternativen verfügbar.
Alternativen anfordernWM8761CBGED Grenzwerte & elektrische Eigenschaften
| Converter Type | Stereo audio digital-to-analog converter |
| Maximum Sampling Rate | 192 kHz |
| Data Input Word Length | 16 bits to 24 bits |
| Supported Digital Audio Interfaces | I2S, right-justified, and DSP |
| Number of DAC Channels | 2 channels |
| Digital Interpolation Filters | Integrated |
| Sigma-Delta Architecture | Multi-bit sigma-delta modulators |
| Mute Function | Supported |
| De-Emphasis | Supported |
| Gehäuse | 14-pin SOIC |
| Pin-Anzahl | 14 pins |
| Montageart | Surface mount |
WM8761CBGED 14-pin soic Pinbelegungsleitfaden
Pinbelegung für WM8761CBGED (14-pin soic-Gehäuse). Dieses analoge Bauteil verfügt über Eingangs-, Ausgangs- und Versorgungspins. Offset-Null-, Kompensations- und Enable-Pin-Konfigurationen entnehmen Sie dem Herstellerdatenblatt. Ideal für Signalaufbereitung und Verstärkerschaltungen.
Keine detaillierten Pinbelegungsdaten verfügbar für WM8761CBGED.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
WM8761CBGED ist geeignet für 6 Anwendungs: Digital Television Audio Output, Home Theater Receiver DAC, DVD Player Audio DAC, AC-3 and DTS Decoder Interface, MPEG Audio Decoder Output, Legacy Stereo Audio Equipment Upgrade.
Digital Television Audio Output
The WM8761CBGED fits a digital-TV analog-audio output stage that receives decoded stereo or surround audio from a digital-audio decoder. Its support for 16-bit to 24-bit input, sampling rates up to 192 kHz, and I2S, right-justified, or DSP formats allows the source interface to be matched without moving to a larger converter. Mute and de-emphasis functions support playback integration. The 14-pin SOIC package also keeps the converter compact, although the obsolete lifecycle status requires careful sourcing and lifecycle review.
Home Theater Receiver DAC
A home-theater receiver can use the WM8761CBGED to convert digital decoder output into left- and right-channel analog signals for the receiver’s amplification chain. The device’s 24-bit maximum input word length and 192 kHz maximum sampling rate suit high-resolution source material, while the three supported interface formats improve compatibility with different decoder outputs. Mute supports signal management, and de-emphasis can serve legacy source material. PCB implementation must follow the manufacturer pin table and analog-output application circuit.
DVD Player Audio DAC
The WM8761CBGED is directly aligned with DVD-player digital-to-analog conversion because Cirrus Logic identifies the WM8761 for DVD equipment and decoded AC-3, DTS, or MPEG audio. The serial input accepts I2S, right-justified, or DSP data with word lengths from 16 to 24 bits, allowing compatibility with the selected decoder or transport interface. Its stereo conversion architecture supplies separate analog channels for subsequent audio amplification, while integrated interpolation filtering and sigma-delta modulation implement the digital-to-analog stage.
AC-3 and DTS Decoder Interface
When a home-theater system presents decoded AC-3 or DTS audio as digital PCM data, the WM8761CBGED can provide the stereo analog conversion stage. Its selectable serial interfaces accommodate common decoder output conventions, while 16-bit to 24-bit input support covers standard and high-resolution formats. Up to 192 kHz sampling support expands compatibility with high-rate digital-audio sources. The design still requires correct master-clock generation, bit-clock and data-line routing, suitable output filtering, and an analog amplification path.
MPEG Audio Decoder Output
The WM8761CBGED can serve as the analog output stage for an MPEG audio decoder because its manufacturer-described application set explicitly includes decoded MPEG audio. The converter accepts left- and right-channel data through a selectable digital-audio interface and reconstructs two analog outputs for downstream amplification. Its integrated interpolation filters, multi-bit sigma-delta modulators, mute control, and de-emphasis support provide the principal playback functions. The obsolete product status makes legacy repair and controlled redesign planning important.
Legacy Stereo Audio Equipment Upgrade
The WM8761CBGED can support a targeted repair or controlled modernization of legacy stereo equipment that uses a 14-pin SOIC audio DAC footprint and compatible I2S, right-justified, or DSP signals. It preserves a familiar converter family while supporting input word lengths from 16 to 24 bits and sampling rates up to 192 kHz. Before replacement, verify every pin function, supply requirement, clock relationship, mute polarity, de-emphasis configuration, and output-filter topology against the manufacturer datasheet.
Technische Referenzdaten für WM8761CBGED – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt |
|---|---|
| Brand | Cirrus Logic |
| Package | 14-pin SOIC |
| Converter Function | Stereo audio DAC |
| Maximum Data Width | 24 bits |
| Maximum Sampling Rate | 192 kHz |
| Input Word-Length Range | 16 bits to 24 bits |
| Digital Audio Interfaces | I2S, right-justified, and DSP |
| Output Channels | 2 channels |
| Internal Architecture | Digital interpolation filters and multi-bit sigma-delta modulators |
| Lifecycle Status | Discontinued |
Wichtigste Unterscheidungsmerkmale
- Broad digital-audio source compatibility in a compact converter (vs. General-purpose stereo DAC designs without a confirmed 14-pin WM8761-compatible pinout)
- Purpose-built legacy multimedia positioning (vs. Newer general-purpose DAC families)
- Integrated playback-management functions (vs. Basic digital-to-analog converters without confirmed mute and de-emphasis functions)
Designhinweise
Route the serial audio data, bit clock, master clock, mute, and supply connections according to the manufacturer pin-description table and recommended layout. Keep digital-clock traces away from the analog output network, maintain a continuous ground reference, and place input and output filtering components close to their associated pins. Do not infer connections from the 14-pin SOIC outline alone, because the available manufacturer excerpt does not provide the complete signal assignment.
Confirm the source's master-clock and bit-clock relationship before routing the digital interface. The WM8761CBGED supports I2S, right-justified, and DSP formats, but the selected mode must agree with the decoder's data alignment and frame timing. Use continuous reference planes, avoid long parallel bus stubs, and keep switching-clock return paths short. Validate timing and the analog output at the intended sample rates with suitable test equipment.
Treat the WM8761CBGED as an obsolete product and verify the exact suffix, carrier configuration, lot traceability, and assembly requirements before committing a production build. A visible suffix difference such as /R does not by itself prove functional equivalence for every purchasing situation. Preserve the original footprint and compare the manufacturer ordering information, pin drawing, supply requirements, clocking, mute behavior, and output circuit before substitution.
Separate the digital input section from the analog output section and place the external output-network components where they can form a short, controlled return path to the device ground. Follow the manufacturer application schematic for component values and termination details. Avoid adding large copper or heat-sinking features without reviewing the converter's electrical requirements, and use thermal analysis based on the final supply conditions and board construction.
Compliance-Informationen
The confirmed manufacturer material does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The device is an audio converter IC rather than an automotive-qualified component.