Features and Benefits
- Differential or single-ended voltage DAC output
- 114 dB DAC dynamic range, A-weighted, differential
- −97 dB total harmonic distortion plus noise (THD + N), differential
- 110 dB DAC dynamic range, A-weighted, single-ended
- −95 dB THD + N, single-ended
- 2.5 V digital and 3.3 V analog and input/output (I/O) supplies
- 299 mW total quiescent power
- Phase-locked loop (PLL) generated or direct master clock MCLK
- Low electromagnetic interference (EMI) design
- Linear regulator driver to generate digital supply
- Supports 24-bit and 32 kHz to 192 kHz sample rates
- Low propagation 192 kHz sample rate mode
- See datasheet for additional features
The ADAU1966A is a high performance, single-chip digital-to-analog converter (DAC) that provides 16 DACs with differential or single-ended outputs using the Analog Devices, Inc., patented multibit sigma-delta (Σ-Δ) architecture. A serial peripheral interface (SPI)/I2C port is included, allowing a microcontroller to adjust volume and many other parameters. The ADAU1966A operates from 2.5 V digital and 3.3 V analog supplies. A linear regulator is included to generate the digital supply voltage from the analog supply voltage. The ADAU1966A is available in an 80-lead LQFP.
The ADAU1966A is designed for low EMI. This consideration is apparent in both the system and circuit design architectures. By using the on-board PLL to derive the internal master clock from an external left-right frame clock (LRCLK), the ADAU1966A can eliminate the need for a separate high frequency master clock and can be used with or without a bit clock. The DACs are designed using the latest Analog Devices continuous time architectures to further minimize EMI. By using 2.5 V digital supplies, power consumption is minimized, and the digital waveforms are a smaller amplitude, further reducing emissions.
Note that throughout this data sheet, multifunction pins, such as SCLK/SCL, are referred to by the entire pin name or by a single function of the pin, for example, SCLK, when only that function is relevant.
- Automotive audio systems
- Home theater systems
- Digital audio effects processors
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The EVAL-ADAU196xAZ evaluation boards allow the user to evaluate the ADAU1962A, 12 channel Digital to analog converter (DAC) or the ADAU1966A, 16 channel DAC. The evaluation board will supply bit clock, LR clock and master clock and will except either 6 or 8 dual channel I2S data streams or multiple TDM (Time Division Multiplexed) data streams.
Software & Systems Requirements
Tools & Simulations
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.