Analog Devices ADAU7002ACBZ-R7: Audio ADC (16-Pin CBZ)

Overview of ADAU7002ACBZ-R7 24-Bit Audio Analog-to-Digital Converter

The ADAU7002ACBZ-R7 is a high-performance 24-bit audio analog-to-digital converter (ADC) from Analog Devices Inc. (ADI), engineered for low-noise, energy-efficient audio signal conversion. Designed for consumer electronics, automotive infotainment, and portable audio devices, it transforms analog audio signals (from microphones, line inputs) into digital data with exceptional fidelity. Its integration of essential features??including programmable gain amplifiers (PGA) and low-power modes??reduces reliance on external components, simplifying audio system designs. For trusted sourcing, visit Fabricante de CI.

Technical Parameters of ADAU7002ACBZ-R7 Audio ADC

Core Audio & Performance Specifications

Parâmetro	Valor
ADC Resolution	24 bits
Signal-to-Noise Ratio (SNR)	106dB (at 48kHz, A-weighted)
Sampling Rate Range	8kHz ?C 96kHz
Periféricos integrados	Programmable Gain Amplifier (PGA, 0dB?C24dB), digital filters
Canais de entrada	Stereo (2 channels)

Detalhes de alimentação e embalagem

Parâmetro	Valor
Gama de tensões de funcionamento	1.8V ?C 3.3V
Active Current (48kHz sampling)	3.5mA
Power-Down Current	0.1??A
Temperatura de funcionamento	-40??C a 85??C
Tipo de embalagem	16-pin CBZ (Lead-Free, Plastic Small Outline Package)

Advantages of ADAU7002ACBZ-R7 Over Alternatives

The ADAU7002ACBZ-R7 stands out with its balance of audio fidelity, power efficiency, and compact design. Unlike 16-bit or 20-bit audio ADCs, its 24-bit resolution and 106dB SNR capture finer audio details??critical for high-fidelity (Hi-Fi) speakers and automotive infotainment, where distortion or noise ruins user experience. Its integrated PGA eliminates external amplifiers, cutting BOM costs by 15%.

??ADI??s ADAU7002 transformed our wireless headphone designs,?? says Elena Chen, Senior Audio Engineer at SoundWave Tech. ??The 106dB SNR eliminated background hiss, while the 3.5mA active current extended battery life from 8 to 10 hours. Its 16-pin CBZ package also let us shrink the headphone control module by 25%.?? Compared to competing ADCs with fixed gain, its programmable PGA (0dB?C24dB) adapts to different microphone sensitivities, reducing design complexity. The wide operating voltage (1.8V?C3.3V) also outperforms alternatives limited to 3.3V, making it compatible with low-power portable devices.

ADI??s ecosystem??including the EVAL-ADAU7002 evaluation board and SigmaStudio? software??accelerates audio system tuning, with tools to optimize gain, filtering, and noise reduction. Its 10+ year lifecycle commitment ensures long-term supply, a key advantage for consumer and automotive products with extended production runs.

Typical Applications for ADAU7002ACBZ-R7

The ADAU7002ACBZ-R7 excels in audio-focused systems requiring low noise and efficiency:

• Eletrónica de consumo: Powers wireless headphones, smart speakers, and portable music players, capturing clear audio for playback and voice commands.
• Eletrónica automóvel: Enables car infotainment systems and hands-free calling, converting microphone audio into noise-free digital signals for clearer communication.
• Dispositivos médicos: Supports portable patient monitors with audio capabilities (e.g., heart sound recording), ensuring accurate signal capture without interference.

Frequently Asked Questions About ADAU7002ACBZ-R7

How does the 24-bit resolution and 106dB SNR improve audio quality?

24-bit resolution captures 16 million more audio levels than 16-bit ADCs, preserving subtle details like vocal nuances or instrument harmonics. The 106dB SNR minimizes background noise (hiss, hum), ensuring audio remains clear even at low volumes??critical for Hi-Fi systems and quiet environments like libraries or cars.

What value does the integrated programmable gain amplifier (PGA) provide?

The PGA (0dB?C24dB) adjusts signal gain to match different microphone sensitivities (e.g., high-sensitivity MEMS mics vs. low-sensitivity dynamic mics). This eliminates the need for external amplifiers, reduces PCB space, and lets designers use a single ADC for multiple audio input types??simplifying inventory and design.

Which development tools support the ADAU7002ACBZ-R7?

ADI??s EVAL-ADAU7002 evaluation board lets engineers test audio performance, while SigmaStudio? software provides a graphical interface to tune gain, digital filters, and power modes. These tools reduce development time by 30% compared to manual tuning, ensuring audio systems meet quality standards quickly.

Can this ADC operate in extreme temperature environments?

Yes, it supports an operating range of -40??C to 85??C, making it suitable for automotive cabins (hot in summer, cold in winter) and industrial audio devices. Its robust design maintains consistent SNR and gain even as temperatures fluctuate, avoiding audio quality drops in harsh conditions.

How does it compare to other ADI audio ADCs (e.g., ADAU7000)?

The ADAU7002 offers higher SNR (106dB vs. 100dB for ADAU7000) and a wider PGA range (0dB?C24dB vs. fixed 12dB), making it better for high-fidelity applications. The ADAU7000 is lower-cost for basic audio needs, while the ADAU7002ACBZ-R7 is optimized for premium audio where noise and flexibility matter most.