CS4227-KQ - Six-Channel 20-Bit Audio Codec | Cirrus Logic
Référence : CS4227-KQ ✗ Fin de vieCS4227-KQ Présentation
An audio codec is a mixed-signal semiconductor that combines analog input conversion, digital audio processing, and analog output reconstruction. The CS4227 belongs to the broader ADC/DAC and audio-codec hierarchy, where the stereo ADC captures analog audio for digital processing and the six DAC channels reconstruct digital audio as analog signals. Integrating these functions can reduce the number of separate converters required in a multichannel audio system while simplifying synchronization and control.
The CS4227-KQ provides stereo analog-to-digital conversion and six digital-to-analog outputs at 20-bit resolution. Its six independently selectable output volume controls are useful when different channels require separate attenuation or gain adjustment. The codec is designed around a +5 V supply, and the KQ ordering code identifies the 44-pin TQFP package offered for an ambient operating range of -10 °C to +70 °C.
The device uses delta-sigma conversion to implement the analog-to-digital and digital-to-analog functions. This architecture is well suited to digital audio because it supports high-resolution conversion, integrated digital control, and multiple outputs in a single package. Its serial interface and converter architecture make it a candidate for professional audio equipment, multichannel recording systems, sound cards, mixer designs, and other systems requiring simultaneous playback and capture functions.
A practical multichannel design can use the stereo ADC section for line or microphone-oriented analog inputs and the six DAC channels for independent playback outputs. Signal conditioning, grounding, and reference or clock implementation must be designed around the manufacturer’s recommended application circuit. Because the codec contains both analog and digital sections, converter performance also depends on careful supply partitioning, trace routing, and control of analog and digital return currents.
The primary design tradeoff is functional consolidation versus specialized converter performance. Integrating eight conversion channels into one IC can simplify a multichannel audio board, but designers must still allocate board area for support components and must respect the recommended layout for analog inputs, digital interfaces, supply connections, and exposed thermal features. The 10 mm by 10 mm TQFP package is larger than many compact audio converters, so footprint planning remains important.
This guide consolidates the confirmed codec architecture, package information, temperature range, interface considerations, application guidance, and qualified same-footprint variant information into an engineering-focused selection reference. It also distinguishes confirmed drop-in coverage from broader functional codecs, helping designers avoid assuming that a similar channel count automatically guarantees pin compatibility.
Alternatives de remplacement direct pour CS4227-KQ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
CS4227-BQ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CS4227-KQ Valeurs maximales et caractéristiques électriques
| Product Type | Six-channel audio codec |
| Converter Resolution | 20 bit |
| Analog-to-Digital Channels | 2 stereo channels |
| Digital-to-Analog Channels | 6 channels |
| Conversion Technology | Delta-sigma conversion |
| Tension d'alimentation | +5 V |
| Output Volume Control | Independent control for each of 6 D/A channels |
| Boîtier | 44-pin TQFP |
| Package Dimensions | 10 mm x 10 mm |
| Plage de température de fonctionnement | -10 °C to +70 °C |
| Type de montage | Surface mount |
| Digital Audio Interface | 20-bit serial interface |
| Nombre de broches | 44 pins |
Guide de configuration des broches du CS4227-KQ 10 mm x 10 mm
Configuration des broches du CS4227-KQ (boîtier 10 mm x 10 mm). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour CS4227-KQ.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
CS4227-KQ convient pour 6 applications: Multichannel Recording and Playback, Professional Audio Mixer, Sound Card and Audio Interface, Digital Mixing Console, Active Speaker and Monitor System, Multichannel Audio Test Equipment.
Multichannel Recording and Playback
The CS4227-KQ fits a recording system that must capture stereo analog input while producing six independently adjusted digital-audio outputs. Its stereo ADC and six delta-sigma DAC channels reduce the converter count normally required for a multichannel signal path, while the 20-bit conversion format supports high-resolution audio workflows. The +5 V supply and 44-pin TQFP package require a deliberate analog, digital, and power-ground layout based on the manufacturer’s recommended circuit.
Recommandé
Professional Audio Mixer
A professional audio mixer can use the six DAC channels as separate monitor or mix outputs and use the stereo ADC for return or reference capture. Independently selectable volume controls on every D/A channel simplify channel-level attenuation without requiring an external attenuator for each path. The 20-bit CS4227-KQ is appropriate for a +5 V multichannel architecture, provided that output drivers, protection networks, analog references, and grounding are designed around the device’s specified application circuit.
Recommandé
Sound Card and Audio Interface
The CS4227-KQ suits a sound-card design requiring stereo analog capture alongside six playback channels. The stereo ADC can serve microphone or line-level input stages, while the six DAC outputs can feed line-level buffers or monitoring channels. Its delta-sigma converters and 20-bit representation suit digitally controlled audio, although the implementation must include suitable input conditioning, output amplification, clocking, and isolation from computer-generated switching noise.
Recommandé
Digital Mixing Console
The six independently adjustable DAC outputs of the CS4227-KQ align with a digital mixing console that requires separate level control for multiple monitoring or line outputs. Digital mix data can be routed to the six converter channels while the stereo ADC section handles additional analog inputs. This consolidation reduces the number of discrete output converters, but designers should budget PCB area for support components and follow the recommended layout to minimize channel-to-channel coupling and digital noise.
Recommandé
Active Speaker and Monitor System
The CS4227-KQ can form the digital-to-analog portion of an active speaker controller with six independently controlled outputs. Feeding six mixer buses to separate DAC channels supports individualized monitor trim, mute, or attenuation functions. The device’s +5 V architecture and six output volume controls simplify channel management, but it does not include a stated headphone or speaker amplifier, so external amplification and output protection remain necessary for connected speakers.
Recommandé
Multichannel Audio Test Equipment
The CS4227-KQ is useful in test equipment that generates or captures several audio channels while maintaining digital control over each DAC output. Its stereo ADC can provide measurement inputs and its six DAC channels can supply independent test signals with per-channel attenuation. The -10 °C to +70 °C KQ range covers typical indoor equipment environments. For harsher environmental or mobile use, the wider-temperature CS4227-BQ variant should be evaluated as the same-package option.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour CS4227-KQ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | CS4227-BQ |
|---|---|---|
| Brand | Cirrus Logic | Cirrus Logic |
| Package | 44-pin TQFP, 10 mm x 10 mm | 44-pin TQFP - same |
| Product Type | Six-channel, 20-bit audio codec | Six-channel, 20-bit audio codec |
| ADC Configuration | Stereo analog-to-digital conversion | Stereo analog-to-digital conversion |
| DAC Configuration | 6 digital-to-analog channels | 6 digital-to-analog channels |
| Converter Resolution | 20 bit | 20 bit |
| Supply Voltage | +5 V | +5 V |
| Conversion Method | Delta-sigma conversion | Delta-sigma conversion |
| Operating Temperature Range | -10 °C to +70 °C | -40 °C to +85 °C |
| Volume Control | Independently selectable for each of 6 D/A channels | Independently selectable for each of 6 D/A channels |
Principaux différenciateurs
- Eight conversion functions are consolidated in one codec (vs CS4227-BQ)
- Independent control of every playback channel (vs CS4227-BQ)
- Temperature choice between standard and extended ranges (vs CS4227-BQ)
Notes de conception
Separate analog and digital return paths and place the CS4227-KQ according to the manufacturer’s recommended application layout. The chip combines two ADC inputs with six DAC outputs, so analog input traces, converter signal paths, digital interface routes, and the +5 V supply should not share unnecessarily large return-current paths. Keep sensitive analog traces away from high-current digital output and clock routing, and use a continuous ground reference under the device where the package and board construction allow it.
Provide a stable +5 V supply to the codec and decouple each supply connection with the capacitance and placement specified by the manufacturer. Because the device contains both analog-to-digital and digital-to-analog converters, supply disturbances can appear as noise or distortion in captured and reproduced audio. Use short power connections, local high-frequency bypass capacitance, and separate routing for sensitive analog supply nodes where the recommended circuit calls for it.
Do not assume that another audio codec with the same channel count is pin-compatible. The CS4227-KQ is a 44-pin TQFP device with a specific +5 V architecture, 20-bit stereo ADC, six DAC channels, and independent volume controls. Before replacing it, compare the complete pin-description table, digital serial timing, clock requirements, analog input ranges, output behavior, and external component values. The related CS4227-BQ shares the package but extends the operating range.
Treat the digital serial interface and clock signals as important signal-integrity paths, particularly when the codec is located far from the digital audio controller. Route clocks and data over continuous reference planes, avoid unnecessary test pads or stubs, and observe any impedance, timing, and grounding recommendations in the manufacturer datasheet. Analog and digital signals should meet only where the recommended circuit requires it, reducing opportunities for converter outputs and digital switching edges to couple into the input channels.
Informations de conformité
No explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations were identified for the exact CS4227-KQ ordering code.
