AD1937

Four ADCs/Eight DACs with PLL, 192 kHz, 24-Bit Codec

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Overview

Features and Benefits
Product Details

Features and Benefits

PLL-generated or direct master clock
Low EMI design
112 dB DAC/ 107 dB ADC Dynamic Range and SNR
-96 dB THD+N

Single 3.3 V supply
Tolerance for 5 V logic inputs
Supports 24-bits and 8 kHz to 192 kHz sample rates
See Data Sheet for Additional Information

Product Details

The AD1937 is a high performance, single-chip codec that provides four analog-to-digital converters (ADCs) with differential input and eight digital-to-analog converters (DACs) with differential output, using the Analog Devices, Inc., patented multibit sigma-delta (Σ-Δ) architecture. An I²C® port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1937 operates from 3.3 V digital and analog supplies. The AD1937 is available in a 64-lead (differential output) LQFP.

The AD1937 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 master clock from the LR (frame) clock or from an external crystal, the AD1937 eliminates the need for a separate high frequency master clock and can also be used with a suppressed bit clock. The DACs and ADCs are designed using the latest Analog Devices continuous time architecture to further minimize EMI. By using 3.3 V supplies, power consumption is minimized and further reduces emissions.

Applications

Automotive audio systems

Home theater systems

Set-top boxes

Digital audio effects processors

Data Sheet, Rev. 0, 9/08

Product Categories

Audio Products
- Audio CODECs

Markets and Technologies

Automotive (2)
- Premium Audio Amplifiers
- Head-Unit and Cockpit ECU

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Product Lifecycle Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (2)

EVAL-AD1937

AD1937 Evaluation Board

EVAL-ADUSB2EBZ

ADUSB2EBZ Evaluation Board

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 & Resources

Data Sheets

AD1937: Four ADCs/Eight DACs with PLL, 192 kHz, 24-Bit Codec Data Sheet (Rev. B)
6/24/2010
PDF

User Guides

UG-040: Evaluation Guide for AD1937/AD1939
2/9/2010
PDF

Application Notes

AN-1006: Using the EVAL-ADUSB2EBZ
5/19/2020

Software & Systems Requirements

Evaluation Software

ZIP

3923 kB

Automated Register Window Builder

Software Modules

ZIP

4.51 M

Automated Register Window Builder, Version 3.2.1

Tools & Simulations

IBIS Models

IBS

AD1936/AD1937 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.View our quality and reliability program and certifications for more information.

Part Number	Material Declaration	Reliability Data	Pin/Package Drawing	CAD Symbols, Footprints & 3D Models
AD1937WBSTZ	Material Declaration	Reliability Data	64-Lead LQFP (10mm x 10mm)	Ultra Librarian SamacSys
AD1937WBSTZ-RL	Material Declaration	Reliability Data	64-Lead LQFP (10mm x 10mm)	Ultra Librarian SamacSys
Wafer Fabrication Data

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Support & Discussions

AD1937 Discussions

RE: AD1938 voltage range

2 week(s) ago in Audio

RE: ADAU1467 Eval Board I2C Programming

19 week(s) ago in SigmaDSP Processors & SigmaStudio Dev. Tool

All AD1937 Discussions

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

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.