Analog Devices has introduced a 16-channel audio D/A converter designed to reduce power consumption in professional audio systems and automotive equipment.
The 24-bit ADAU1966 16-channel audio D/A converter provides 118dB-SNR (signal-to-noise ratio) performance at 32kHz to 192kHz sampling rates.
Its 118dB SNR performance is achieved with a lowest in class power consumption of less than 300mW for 16-channel operation by running the digital portion of the device at a lower voltage.
The digital supply can be generated on chip via a linear regulator allowing the chip 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.
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 A/D converter’s on-board PLL (phase-locked loop) to derive the internal master clock from an external left/right clock, the chip is designed to eliminate the need for a separate high frequency master clock and can be used with or without a bit clock.
It 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.
www.analog.com/ADAU1966