Norwood, MA (11/28/2011) - Analog Devices, Inc. (ADI) introduced a 16-channel audio D/A converter today capable of improving audio system performance and reducing power consumption for professional, “prosumer” and automotive audio equipment applications.

The 24-bit ADAU1966 16-channel audio D/A converter provides 118dB SNR (signal-to-noise ratio) performance at 32 kHz to 192 kHz sampling rates. Its 118 dB SNR performance is achieved with a lowest in class power consumption of less than 300 mW for 16-channel operation by running the digital portion of the ADAU1966 at a lower voltage. The digital supply can be generated on chip via a linear regulator allowing the ADAU1966 to operate off a single analog supply. Alternatively, the regulator can be bypassed and a separate 2.5V to 3.3V supply provided to the chip.

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Operating the ADAU1966 with full-scale differential output voltage of 3 Vrms reduces the need for downstream gain and preserves a high SNR against electrically-coupled system noise. By using the ADAU1966 A/D converter's on-board PLL (phase-locked loop) to derive the internal master clock from an external left/right clock, the ADAU1966 eliminates the need for a separate high frequency master clock and can be used with or without a bit clock.

The ADAU1966 is qualified for AEC-100 automotive applications and operates at a -40° C to +105° C temperature range. It also features an SPI/I2C port which allows an external microcontroller to adjust volume and read the chip temperature to within +/-3°C.

ADAU1966 24-bit, 16-channel Audio D/A Converter Key Features:

  • THD + N = −98 dB
  • 300-mW total (19-mW/channel) quiescent power at AVDD = 3.3 V
  • 2.5-V digital and 3.3-V or 5-V analog and IO supplies
  • PLL-generated or direct master clock
  • Supports 24-bit and 32-kHz to 192-kHz sample rates
  • Qualified for automotive applications
  • Low EMI design

Availability, Pricing and Complementary Components

Product Sample Availability Full Volume Production Temperature Range Price Each Per 1,000 Packaging
ADAU1966 Now Now -40°C to 105°C $6.51 80-lead LQFP

The ADAU1966 operates well in a system with a variety of ADI's SigmaDSP® digital audio processors including the ADAU1442, ADAU1445, ADAU1446 and AD1940. It can also be used along with ADI's SHARC® floating-point DSP products and the Blackfin®16/32-bit line of embedded processors.

About Analog Devices

Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 100,000 customers, representing virtually all types of electronic equipment. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.

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Editor's Contact Information:

Bob Olson

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