CS4297A-JQ - AC'97 Stereo Audio Codec | Cirrus Logic
MPN: CS4297A-JQ ✗ پایان تولیدCS4297A-JQ نمای کلی
An audio codec is a mixed-signal interface IC that converts between digital audio data and analog microphone or line-level signals. The CS4297A-JQ combines one analog-to-digital converter, one digital-to-analog converter, and the AC'97 serial audio interface used by PC-compatible multimedia controllers. Within the semiconductor hierarchy, it belongs to the audio-codec and interface-IC categories rather than a standalone amplifier or converter.
Key features include AC'97 2.1 compatibility, stereo conversion, CrystalClear delta-sigma technology, 18-bit ADC and DAC resolution, a 20-bit S/PDIF interface, and SPI configuration. These functions allow a PC multimedia system to capture and playback stereo audio while sharing digital control through the SPI interface. The 48-LQFP package also provides a defined leaded footprint suitable for conventional surface-mount PCB assembly.
The device integrates analog input and output circuitry with a digital AC-Link path. Its delta-sigma conversion architecture is intended for multimedia audio rather than high-bandwidth industrial signal acquisition. The S/PDIF interface provides a digital route for digital audio, while the AC'97 interface connects the codec to a compatible multimedia controller. Exact clock requirements, conversion-rate limits, analog performance, and electrical limits must be confirmed in the manufacturer datasheet before final system design.
Typical uses include legacy PC multimedia systems, desktop and portable entertainment computers, and sound cards that require an AC'97-compatible stereo codec. It is particularly relevant when maintaining or repairing an existing PC architecture rather than designing a new USB or I2S audio subsystem. Software compatibility also depends on the host controller, operating system, driver, and the exact AC'97 electrical implementation.
For new designs, confirm that the legacy AC'97 architecture is required and that the host controller supports the codec's serial protocol. Preserve the manufacturer's recommended decoupling, analog layout, clocking, and grounding practices. Because this is an older PC multimedia component, lifecycle status, interface timing, and long-term availability deserve verification before committing a new production platform.
This page combines the verified CS4297A-JQ product identity, package information, AC'97 feature set, ordering alternatives, selection guidance, and practical integration notes. It also distinguishes confirmed drop-in ordering notation from broader functional equivalents so engineers can assess replacement risk without assuming that every similar audio codec is electrically interchangeable.
جایگزین‌های drop-in برای CS4297A-JQ — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای CS4297A-JQ (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Product Type.
CS4297AJQ
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
CS4297A-JQ حداکثر مقادیر مجاز و مشخصات الکتریکی
| Product Type | Stereo audio codec IC |
| Audio Interface | AC'97 2.1 compatible |
| ADC Resolution | 18 bit |
| DAC Resolution | 18 bit |
| S/PDIF Resolution | 20 bit |
| Control Interface | SPI |
| Converter Technology | CrystalClear delta-sigma mixed-signal technology |
| Analog-to-Digital Channels | 1 channel |
| Digital-to-Analog Channels | 1 channel |
| Channel Configuration | Stereo |
| Target System Compatibility | PC 99-compliant desktop, portable, and entertainment systems |
| Package Type | 48-LQFP |
| Package Dimensions | 7 x 7 mm |
| نوع نصب | Surface mount |
| Automotive Qualification | Not indicated in the product description |
راهنمای پیکربندی پین CS4297A-JQ 7 x 7 mm
پیکربندی پین برای CS4297A-JQ (پکیج 7 x 7 mm). این IC دیجیتال شامل GPIO، رابط‌های ارتباطی (UART، SPI، I2C) و پین‌های تغذیه است. برای عملکردهای جایگزین پین و گزینه‌های پیکربندی به دیتاشیت سازنده مراجعه کنید. ضروری برای طراحی سیستم‌های نهفته و چیدمان PCB.
داده پین‌آوت تفصیلی موجود نیست برای CS4297A-JQ.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
CS4297A-JQ مناسب است برای 6 کاربردs: Legacy PC Sound Cards, Desktop Multimedia Systems, Portable Entertainment Computers, Digital Audio Equipment, Analog Audio Capture and Playback, Industrial PC Audio Control.
Legacy PC Sound Cards
The CS4297A-JQ fits a legacy PC sound card built around an AC'97-compatible multimedia controller because it combines stereo 18-bit ADC and DAC conversion with an AC'97 2.1 interface. The codec can accept analog capture signals, return analog playback audio, and expose digital audio through the 20-bit S/PDIF path. Its SPI control interface provides a separate configuration route for register setup. In a repair or redesign, verify the host controller's AC-Link timing, clock sources, frame definitions, and driver expectations. The 48-LQFP 7 x 7 mm package should be checked against the original board footprint before ordering.
پیشنهادی
Desktop Multimedia Systems
The CS4297A-JQ is appropriate for a desktop multimedia system that retains an AC'97 audio architecture and requires simultaneous analog recording and playback. Its stereo 18-bit conversion paths provide the core functions expected by PC-compatible audio subsystems, while the 20-bit S/PDIF interface supports digital-audio routing to compatible downstream equipment. Because the part targets PC 99-class desktop, portable, and entertainment systems, it is best suited to maintenance and controlled continuation of legacy platforms. Confirm clocking, analog input levels, output loading, and software driver compatibility before integrating it into a new board.
پیشنهادی
Portable Entertainment Computers
The CS4297A-JQ can support a portable entertainment computer designed around an AC'97-compatible controller, particularly when an established codec layout must be preserved. Its integrated ADC, DAC, AC'97 interface, S/PDIF support, and SPI configuration allow one package to handle stereo capture and playback. The manufacturer describes the CS4297A for portable computing as well as desktop and entertainment systems. Portable implementations must still account for power consumption, thermal conditions, analog-noise sensitivity, connector isolation, and the exact package dimensions. These constraints should be checked against the system power budget and the manufacturer's operating limits.
پیشنهادی
Digital Audio Equipment
The CS4297A-JQ is suitable for digital-audio equipment that needs an AC'97 host interface plus a 20-bit S/PDIF path. In such a system, the S/PDIF output can carry digital audio toward an external consumer-audio component while the analog DAC path provides line-level playback. The integrated 18-bit ADC also permits digital capture from analog sources. Because this is an older PC-oriented codec, its suitability depends on the availability of a compatible host controller and the required clock relationship. For equipment designs, validate output jitter, sample-rate support, input/output levels, and digital-audio connector requirements in the manufacturer datasheet.
پیشنهادی
Analog Audio Capture and Playback
The CS4297A-JQ can serve as the central stereo capture and playback codec in an AC'97-based analog audio subsystem. The 18-bit ADC path converts incoming microphone or line signals into digital audio for the host controller, while the 18-bit DAC path recreates playback audio at the analog output stage. CrystalClear delta-sigma conversion is the defining internal technology cited for the device. Designers should preserve the recommended analog grounding, reference, input-filtering, and output-loading arrangements. Verify full-scale input range, output impedance, and distortion specifications in the datasheet before selecting external op-amps, coupling capacitors, or gain stages.
پیشنهادی
Industrial PC Audio Control
The CS4297A-JQ may fit an industrial or embedded PC audio subsystem where an established AC'97 controller and driver environment are retained. Its deterministic AC'97 2.1 interface, SPI configuration path, stereo converters, and 20-bit S/PDIF connection provide the required audio functions without requiring a newer mixed-signal codec architecture. For industrial maintenance, the key risks are component traceability and long-term availability rather than basic interface functionality. Confirm the supported temperature range, supply limits, lifecycle status, and any special ordering or quality documentation for the deployment. A board-level review should also verify isolation between industrial analog inputs and sensitive digital clocks.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای CS4297A-JQ — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | CS4297AJQ |
|---|---|---|
| Manufacturer | Cirrus Logic | Cirrus Logic |
| Package | 48-LQFP (7x7) | 48-LQFP (7x7) |
| Product Type | Stereo audio codec | Stereo audio codec |
| Primary Audio Interface | AC'97 2.1 | AC'97 2.1 |
| ADC Resolution | 18 bit | 18 bit |
| DAC Resolution | 18 bit | 18 bit |
| S/PDIF Resolution | 20 bit | 20 bit |
| Control Interface | SPI | SPI |
| Converter Architecture | CrystalClear delta-sigma | CrystalClear delta-sigma |
تفاوت‌های کلیدی
- Confirmed ordering-form equivalence (در مقابلCS4297AJQ)
- Integrated legacy multimedia interface set (در مقابلModern mixed-signal audio codecs)
- Purpose-built PC 99 compatibility (در مقابلGeneral-purpose stereo codec ICs)
یادداشت‌های طراحی
Route the AC-Link and SPI signals as short, continuous traces away from the analog input and output networks. Maintain a continuous ground reference beneath the 48-LQFP where the manufacturer's layout guidance permits it, and place bypass capacitors adjacent to their associated supply pins. Keep analog and digital return currents separated where possible so switching current does not flow through the audio reference path. Confirm the exposed-pad connection and copper area from the package drawing before fabrication.
Treat AC-Link, S/PDIF, and SPI traces as clocked digital interfaces and use the manufacturer's termination and impedance guidance where stated. Avoid adding unnecessary test pads or long branch stubs on timing-sensitive nets. Establish the codec's clock source and generated-interface relationships before routing because mismatched clock assumptions can prevent valid frames even when the apparent connections are correct. Validate timing with the final host controller rather than relying only on individual net measurements.
Do not treat every AC'97, S/PDIF, or stereo audio codec as a substitute for this device. A true replacement must match the 48-LQFP pin assignments, AC-Link framing, SPI register map, clock requirements, analog levels, and power sequence. S/PDIF is present on the CS4297A-JQ, but a generic codec with only S/PDIF and I2S may require a different board and software architecture. Perform a complete pin and register comparison before replacing an original design.
Separate analog and digital supply routing where the codec architecture provides distinct supply pins, and place local high-frequency bypass capacitance directly at the package pins. Confirm permitted supply voltage, tolerance, startup behavior, and analog and digital load currents in the manufacturer datasheet before selecting regulators. Because this legacy part has an obsolete lifecycle status, do not assume that a mechanically similar modern codec can operate from the original supply rails without a full electrical redesign.
Keep the analog input traces short and guard them against digital clocks and switching-regulator traces. Use the manufacturer's recommended input filtering and output isolation network rather than adding arbitrary capacitance that could affect converter performance. The digital audio interfaces should not run parallel to sensitive analog inputs for extended distances. During compliance testing, evaluate both conducted emissions and radiated behavior, with special attention to clock harmonics and external digital-audio connectors.
اطلاعات انطباق
The product description does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The device is a PC multimedia audio codec and is not identified as an automotive-qualified product.
