**ADAU1962WBSTZ: A Comprehensive Technical Overview of Analog Devices' Low-Power Audio Codec**
The **ADAU1962WBSTZ** from Analog Devices is a highly integrated, low-power stereo audio codec designed to deliver high-fidelity sound in power-sensitive portable and fixed applications. This component is a cornerstone for modern audio systems, offering a blend of superior analog performance, digital flexibility, and exceptional power efficiency. It is particularly well-suited for applications including **smartphones, tablets, digital cameras, portable audio players, and USB audio interfaces**.
Architecturally, the ADAU1962WBSTZ integrates two primary signal paths: a high-performance analog-to-digital conversion (ADC) path and a digital-to-analog conversion (DAC) path. The stereo DAC supports **24-bit resolution and sample rates up to 192 kHz**, ensuring the reproduction of audio with exceptional dynamic range and clarity. Conversely, the stereo ADC path also features 24-bit resolution, capturing audio with high precision and minimal noise. A critical feature is its ultra-low power consumption, with the DAC consuming just **4.3 mW from a 1.8 V supply during playback** of 48 kHz audio, making it ideal for battery-operated devices.
Digital core functionality is managed by a flexible serial audio interface, which is compatible with **I²S, left-justified, right-justified, and TDM** formats. This compatibility ensures easy connection to a wide array of digital signal processors (DSPs), microcontrollers, and application processors. The device also includes a programmable PLL that can derive all required internal audio clocks from a single master clock, simplifying system design and reducing the need for multiple external oscillators.
Beyond the core conversion, the codec is packed with integrated features that minimize external component count and simplify design. These include:
* **On-Chip Headphone Amplifier:** Capable of driving stereo headphones directly, eliminating the need for an external op-amp.
* **Programmable Digital Audio Processing:** Features like **volume control, tone control (bass/treble), and mixing** can be configured through the control interface.
* **Flexible Power Management:** The device supports multiple low-power modes, allowing sections of the chip to be powered down when not in use to maximize battery life.
* **Analog Input/Output Mixing:** Provides flexibility for routing various analog audio sources to the output stages.
Control of the ADAU1962WBSTZ is accomplished via a standard I²C or SPI serial control interface, allowing a host processor to easily configure all its settings, from input selection to digital effects and power modes.
**ICGOODFIND:** The ADAU1962WBSTZ stands out as an **exceptional blend of high-fidelity audio performance and remarkable power efficiency**. Its high level of integration, format flexibility, and comprehensive feature set make it a premier choice for designers aiming to add premium audio capabilities to space-constrained and battery-powered consumer electronics.
**Keywords:** Low-Power Audio Codec, 24-bit/192 kHz, Integrated Headphone Amplifier, I²S/TDM Interface, Programmable Digital Processing.
