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DLRCLK

更新时间： 2024-11-03 12:34:19

品牌	Logo	应用领域
亚德诺 - ADI		解码器编解码器
页数	文件大小	规格书
32页	485K
描述
4 ADC/8 DAC with PLL, 192 kHz, 24-Bit Codec

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DLRCLK 数据手册

4 ADC/8 DAC with PLL,

192 kHz, 24-Bit Codec

AD1939

Data Sheet

FEATURES

GENERAL DESCRIPTION

PLL generated or direct master clock

Low EMI design

112 dB DAC/107 dB ADC dynamic range and SNR

−94 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

Differential ADC input

Differential DAC output

Log volume control with autoramp function

SPI controllable for flexibility

Software-controllable clickless mute

Software power-down

The AD1939 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 SPI port is included,

allowing a microcontroller to adjust volume and many other

parameters. The AD1939 operates from 3.3 V digital and analog

supplies. The AD1939 is available in a 64-lead (differential

output) LQFP package.

The AD1939 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 clock or from an external crystal, the AD1939 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

architectures to further minimize EMI. By using 3.3 V supplies,

power consumption is minimized, further reducing emissions.

Right-justified, left-justified, I²S, and TDM modes

Master and slave modes up to 16-channel input/output

64-lead LQFP package

Qualified for automotive applications

APPLICATIONS

Automotive audio systems

Home Theater Systems

Set-top boxes

Digital audio effects processors

FUNCTIONAL BLOCK DIAGRAM

DIGITAL AUDIO

INPUT/OUTPUT

AD1939

SERIAL DATA PORT

DAC

SDATA

OUT

SDATA

ADC

DIGITAL

FILTER

AND

VOLUME

CONTROL

ANALOG

AUDIO

INPUTS

CLOCKS

ANALOG

AUDIO

OUTPUTS

DIGITAL

FILTER

TIMING MANAGEMENT

AND CONTROL

(CLOCK AND PLL)

SPI

PRECISION

VOLTAGE

REFERENCE

CONTROL PORT

CONTROL DATA

INPUT/OUTPUT

Figure 1.

Rev. E

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support

www.analog.com

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