ADAU1966 16-Channel 118 dB SNR Differential Output, 192 kHz, 24-Bit DAC

The ADAU1966 is a high performance, single-chip DAC that provides 16 digital-to-analog converters (DACs) with differential output using the Analog Devices, Inc., patented multibit sigma-delta (Σ-Δ) architecture. An SPI/I2 C port is included, allowing a microcontroller to adjust volume and many other parameters. The ADAU1966 operates from 2.5 V digital, 5 V analog and 3.3 V or 5 V input/output supplies. A linear regulator is included to generate the digital supply voltage from the analog supply voltage. The ADAU1966 is available in an 80-lead LQFP package.

The ADAU1966 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 LRCLK, the ADAU1966 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.

Applications

Features and Benefits

118 dB DAC dynamic range and SNR

−98 dB THD + N

Differential voltage DAC output

2.5 V digital, 5 V analog and 3.3 V or 5 V I/O supplies

521 mW total (32.6 mW/channel) quiescent power

PLL generated or direct MCLK master clock

Low 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

Log volume control with autoramp function

Temperature sensor with digital readout ±3°C accuracy

SPI and I2C controllable for flexibility

See data sheet for additional features

Data Sheets

Document	note
ADAU1966: 16-Channel High Performance Differential Output, 192 kHz, 24-Bit DAC Data Sheet (Rev. E)	PDF 2.08 M

User Guides

Document	note
UG-416: Evaluating the ADAU1966 High Performance, Low Power, Multibit Sigma-Delta DAC	PDF 1394 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADAU1966WBSTZ Production	80 ld LQFP (14x14mm)	OTH 90	-40 to 105C	0	0	Y
ADAU1966WBSTZRL Production	80 ld LQFP (14x14mm)	REEL 1000	-40 to 105C	0	0	Y

Evaluation Boards

Part Number	Description	Price	RoHS
EVAL-ADAU1962Z	Evaluation board for the ADAU1962	-1	Y
EVAL-ADAU1966Z	Evaluation board for the ADAU1966	549	Y
EVAL-ADUSB2EBZ	USB Interface	80	Y

ADAU1966: 16-Channel High Performance Differential Output, 192 kHz, 24-Bit DAC Data Sheet (Rev. E) adau1966

ADAU1966 IBIS Model adau1966

UG-416: Evaluating the ADAU1966 High Performance, Low Power, Multibit Sigma-Delta DAC adau1966