ADAU1966

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

Data Sheet

Rev. E

Not Recommended for New Designs

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Overview

Features and Benefits
Product Details

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

Product Details

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

Automotive audio systems
Home theater systems
Digital audio effects processors

Product Categories

Audio and Video Products
- Audio D/A Converters

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Product Lifecycle Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Evaluation Kits (2)

EVAL-ADAU1966

ADAU1966/ADAU1962 Evaluation Board

EVAL-ADUSB2EBZ

ADUSB2EBZ Evaluation Board

EVAL-ADAU1966

View Detailed Evaluation Kit Information

The EVAL-ADAU1966Z and the EVAL-ADAU1962Z evaluation boards allow the user to evaluate the ADAU1962, 12 channel Digital to analog converter (DAC) or the ADAU1966, 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. The board has an S/PDIF receiver with RCA and optical connectors, as well as a discrete serial audio interface. Analog outputs are accessible via two db-25 connectors and channels 1 and 2 can be routed to an on-board headphone driver with the output on a stereo TRS Mini jack.

The EVAL-ADAU196x can be controlled through either an I²C or SPI interface. A small external interface board EVAL-ADUSB2EBZ, also called USBi, connects to a PC USB port and provides either I²C or SPI access to the evaluation board through a ribbon cable. The USBi is included with the evaluation board. A graphical user interface (GUI) program, the Automated Register Window Builder, is provided for easy programming of the chip in a Microsoft^® Windows^® PC environment. The evaluation board allows demonstration and performance testing of most ADAU196x features, including high performance DAC operation.

Resources

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

PDF

1394 kB

EVAL-ADUSB2EBZ

View Detailed Evaluation Kit Information

The Analog Devices USBi “USB Interface” (EVAL-ADUSB2EBZ) board is the interface between your PC's USB port and SigmaDSP hardware's data input pins. This interface can be used with any evaluation board which includes an External SPI/I²C header (Aardvark Header). The EVAL-ADUSB2EBZ board is capable of both SPI and I²C communication (which is user selectable) and can supply IOVDD of either 3.3V or 1.8V.The USBi interface is powered from the computer's USB port.

To Install the USBi Board:

Connect the USB cable to the USBi Board a spare USB port on your PC.
The Windows “Found New Hardware Wizard” will launch.
Choose “Install from a list or a specific location” and click “Next”.
Select “Search for the best driver in these locations” and Check the box for “Include this location in the search.”
Press the “Browse” button and locate the appropriate driver file in the SigmaStudio application folder (default folder is C:\Program Files\Analog Devices Inc\Sigma Studio\USB drivers): Select the CyUSB.inf file.
Click “Continue Anyway” if you're prompted with “This software has not passed Windows Logo testing.”

Using USBi in SigmaStudio:

To communication between SigmaStudio and the USBi board, a communication channel block must be added to the Schematic design. To locate the block, select the Hardware Configuration Tab, in the ToolBox or Tree ToolBox window choose the “Communication Channels” category, and select the USBi block.

This block provides connections for multiple processors (ICs / DSPs), allowing you to use multiple processors in a single design. This block allows you to explicitly specify both the communication protocol (SPI or I²C) and the part's address, I²C address or SPI catch line. The DSP hardware's address must match the block's selected address for communication to function properly. See the parts data sheet for more information about addressing (e.g. ADR_SEL, ADDR0, or ADDR1 pins). The default USBi protocol is I²C, to enable SPI, you must first select an SPI address in the block's drop down menu and then perform three write operations (e.g. press the write button the Register Read/Write Window 3 times). The USBi hardware has LEDs which indicate the current mode, I²C or SPI.

Features & Benefits

EVAL-ADUSB2EBZ "USBi"

Digital I/O: USB input, I2C/SPI output
DC Supply: 5 V (USB)

Documentation

Data Sheets (1)

PDF

2.08 M

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

User Guides (1)

PDF

1394 kB

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

Software & Systems Requirements

Software Modules

ZIP

4.51 M

Automated Register Window Builder, Version 3.2.1

Tools & Simulations

IBIS Models

IBS

ADAU1966 IBIS Model

Design Resources

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.

Quality And Reliability

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PCN-PDN Information

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Support & Discussions

ADAU1966 Discussions

RE: ADAU1966A I2S Multiplexing

RE: ADAU196XAZ test, i can't get a digital input 24bit signal by the sigmastudio or the ARWB

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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.

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