**ADAU1966AWBSTZ: A Comprehensive Technical Overview of Analog Devices' Low-Power Audio Codec**
The **ADAU1966AWBSTZ** from Analog Devices represents a highly integrated, low-power stereo audio codec designed to deliver high-fidelity sound in power-constrained applications. This device combines a flexible digital audio interface with high-performance analog-to-digital (ADC) and digital-to-analog (DAC) converters, making it an ideal solution for portable audio equipment, digital speakers, gaming headsets, and other embedded audio systems.
At the core of the ADAU1966AWBSTZ are **high-performance 24-bit stereo ADCs and DACs** that support sample rates from 8 kHz to 96 kHz. The ADCs feature a signal-to-noise ratio (SNR) of 105 dB, while the DACs achieve an impressive SNR of 110 dB, ensuring exceptional audio clarity and minimal distortion. This high level of performance is maintained even in noisy digital environments, thanks to the device’s advanced oversampling architecture and integrated phase-locked loop (PLL), which generates master clocks from a wide range of input frequencies.
Power efficiency is a hallmark of this audio codec. The ADAU1966AWBSTZ operates from a single 1.8 V analog supply and a 1.8 V to 3.3 V digital supply, with **ultra-low power consumption** critical for battery-powered devices. In playback mode, the DAC consumes just 14 mW, while record mode using the ADC draws 12 mW. Additionally, the device features extensive power management capabilities, including software-controlled power-down modes that reduce current consumption to microamps when specific functions are inactive.
Digital audio interfacing is highly flexible, supporting **I²S, left-justified, right-justified, and TDM serial data formats**. This allows seamless connection to a variety of digital signal processors (DSPs), microcontrollers, and application processors. The integrated digital audio processing engine includes features like digital volume control, tone adjustment, and mixing capabilities, providing system designers with tools to enhance audio quality without external components.
The analog section includes stereo line inputs and outputs, alongside a stereo microphone input with programmable bias voltage and preamplifier gain, supporting both differential and single-ended microphones. The built-in **pop and click suppression circuitry** ensures noise-free transitions during power-up and power-down sequences, enhancing the user experience.
Housed in a compact 32-ball WLCSP (Wafer Level Chip Scale Package), the ADAU1966AWBSTZ offers a small footprint suitable for space-constrained designs. Its robust performance, integration, and low power make it a standout choice for modern audio applications.
**ICGOODFIND:** The ADAU1966AWBSTZ is a top-tier low-power audio codec, offering exceptional SNR, flexible digital interfaces, and advanced power management, making it an optimal choice for high-quality portable and embedded audio systems.
**Keywords:** Low-Power Audio Codec, High-Performance ADC/DAC, I²S Interface, Portable Audio Applications, Pop and Click Suppression
