ADAU1966AWBSTZ

IC DAC 24Bit 16CH 192kHz 80LQFP

Product Details

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.

**APPLICATIONS**

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Automotive audio systems

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Home theater systems

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Digital audio effects processors

### Features and Benefits

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Differential or single-ended voltage DAC output

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114 dB DAC dynamic range, 

A-weighted, differential

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−97 dB total harmonic distortion plus noise THD + N, differential

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110 dB DAC dynamic range, 

A-weighted, single-ended

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−95 dB THD + N, single-ended

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2.5 V digital and 3.3 V analog and input/output I/O supplies

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299 mW total quiescent power

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Phase-locked loop PLL generated or direct master clock MCLK

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Low electromagnetic interference EMI design

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Linear regulator driver to generate digital supply

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Supports 24-bit and 32 kHz to 

192 kHz sample rates

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Low propagation 192 kHz sample rate mode

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See datasheet for additional features