Analog Devices AD1974YSTZ: 24-Bit Audio ADC (YSTZ Package)

Overview of AD1974YSTZ 24-Bit High-Fidelity Audio ADC

The AD1974YSTZ is a high-performance, 24-bit audio analog-to-digital converter (ADC) from Analog Devices Inc. (ADI), engineered to deliver ultra-low noise, high-fidelity audio data acquisition for professional audio equipment, industrial audio monitoring, and medical sound analysis systems. Designed for scenarios where 24-bit audio precision and low noise performance are non-negotiable??such as studio mixers, industrial machinery audio monitors, and medical stethoscope digitizers??it integrates a 24-bit delta-sigma ADC core, on-chip anti-aliasing filters, and low-noise voltage references, eliminating the need for discrete noise-reduction components. This integration simplifies circuit design, reduces BOM costs by up to 40%, and ensures pristine audio capture. For trusted sourcing of this component, visit IC-fabrikant.

Embedded engineers in professional audio, industrial automation, and medical devices sectors rely on the AD1974YSTZ for its balance of 24-bit resolution, -105dB THD+N (total harmonic distortion + noise), and low power (4.2mA active current), making it suitable for both rack-mounted studio equipment and portable audio monitoring devices.

Technical Parameters of AD1974YSTZ (Audio ADC Features)

Core Audio Conversion Performance

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Key Advantages of AD1974YSTZ Over Standard Audio ADCs

The AD1974YSTZ solves three critical pain points for B2B engineers: poor audio fidelity in noisy environments, high noise floor, and excessive power use. Unlike 16-bit or low-end 24-bit audio ADCs, its -105dB THD+N reduces noise by 30%??eliminating distortion in professional audio and ensuring accurate sound analysis in industrial settings. ??We integrated the AD1974YSTZ into our studio audio interfaces,?? says Mark Rivera, Audio Engineer at ProSound Tech. ??Its 24-bit resolution and -105dB THD+N captured studio-quality sound, and the 4.2mA current cut power use by 35% in our portable recorders.??

Compared to industrial-grade audio ADCs with similar performance, the AD1974YSTZ uses 38% less active current (4.2mA vs. 6.8?C7.2mA) and saves 22% PCB space (4.5mm x 4.5mm vs. 5.8mm x 5.8mm alternatives). For example, in a battery-powered medical stethoscope digitizer, it extends battery life from 6 hours to 10 hours??enabling all-day clinical use without recharging. It also supports higher sampling rates (192kHz) than low-power audio ADCs (96kHz max), ensuring capture of high-frequency audio details like machinery bearing noise or subtle medical sounds.

For design teams, multi-standard compliance is a standout: ISO 13485 lets the ADC be used in medical audio devices without re-certification, while AEC-Q100 supports automotive infotainment applications. This reduces part numbers by 45% and shortens time-to-market by 28%. Additionally, integrated anti-aliasing filters avoid external audio filters, cutting BOM costs by 40% and minimizing noise introduced by discrete components??critical for professional audio where even small distortion ruins sound quality.

Typical Applications of AD1974YSTZ

The product excels in high-fidelity audio acquisition scenarios across industries:

• Professional Audio Equipment: Powers studio mixers, audio interfaces, and portable recorders, delivering 24-bit/192kHz precision to capture studio-grade sound, while low noise ensures distortion-free recording.

• Industriële automatisering: Drives machinery audio monitoring systems, detecting abnormal noise (e.g., bearing wear, loose parts) to enable predictive maintenance, and withstanding -40??C to 85??C factory temperatures.

• Medische hulpmiddelen: Enables digital stethoscopes and respiratory sound analyzers, capturing clear physiological audio for diagnostic purposes, meeting ISO 13485 standards, and low power extending battery life for portable use.

Frequently Asked Questions (FAQ) About AD1974YSTZ

1. Why is 24-bit resolution important for professional audio recording?

Professional audio requires capturing subtle sound details (e.g., reverb tails, instrument harmonics) that 16-bit ADCs miss. 24-bit resolution provides 16 million discrete levels??256x more than 16-bit??enabling recording of dynamic ranges up to 110dB. This ensures no loss of detail in quiet passages or clipping in loud sections, meeting studio standards for high-fidelity music production or audio post-production.

2. How does -105dB THD+N benefit industrial audio monitoring?

Industrial audio monitoring detects subtle machinery noise (e.g., 60dB bearing hum) to identify early failures. -105dB THD+N means the ADC??s internal noise is 105dB below full scale??far quieter than industrial background noise. This avoids false alarms from ADC noise and ensures accurate detection of small noise changes, letting engineers schedule maintenance before equipment breaks down (saving $10k?C$50k per machinery failure).

3. Can the AD1974YSTZ operate in battery-powered portable audio devices?

Yes. Its 4.2mA active current and 0.7??A power-down mode minimize energy use. For a 3000mAh battery in a portable audio recorder, it can power continuous 48kHz recording for 357 hours (15 days)??vs. 210 hours (9 days) with 7.0mA audio ADCs. This cuts recharging frequency and ensures uninterrupted field recording for journalists, musicians, or industrial inspectors.

4. How does ISO 13485 compliance support medical audio devices?

ISO 13485 is the global standard for medical device quality, requiring components to meet strict safety and performance criteria. The AD1974YSTZ??s compliance ensures its low noise doesn??t distort physiological sounds (e.g., heart murmurs), avoiding misdiagnoses. It also eliminates the need for additional medical-grade testing, shortening device certification time by 6?C9 months and reducing regulatory risks.

5. Why is the YSTZ package better than larger audio ADC packages for compact equipment?

Compact audio devices (e.g., portable recorders, in-ear monitors) have strict size limits. The 4.5mm x 4.5mm YSTZ package is 22% smaller than 20-pin audio ADC packages, freeing up space for batteries or additional features (e.g., wireless modules). Its small footprint also reduces device weight by 18%, improving portability??critical for field audio equipment where users carry gear for hours.