Datasheet > EVAL-AD1938AZ

EVAL-AD1938AZ

更新时间： 2024-11-24 12:32:59

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	472K
描述
4 ADC/8 DAC with PLL, 192 kHz, 24-Bit Codec

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EVAL-AD1938AZ 数据手册

4 ADC/8 DAC with PLL,

192 kHz, 24-Bit Codec

AD1938

Data Sheet

FEATURES

GENERAL DESCRIPTION

PLL generated or direct master clock

Low EMI design

108 dB DAC/107 dB ADC dynamic range and SNR

−94 dB THD + N

3.3 V single supply

Tolerance for 5 V logic inputs

The AD1938 is a high performance, single-chip codec that pro-

vides four analog-to-digital converters (ADCs) with input and

eight digital-to-analog converters (DACs) with single-ended 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.

Supports 24 bits and 8 kHz to 192 kHz sample rates

Differential ADC input

Single-ended DAC output

Log volume control with autoramp function

SPI controllable for flexibility

The AD1938 operates from 3.3 V digital and analog supplies.

The AD1938 is available in a 48-lead (single-ended output)

LQFP package. Other members of this family include a diffe-

rential DAC output and I²C® control port version.

The AD1938 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 AD1938 elimi-

nates 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.

Software-controllable clickless mute

Software power-down

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

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

48-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

AD1938

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 CONTROL PORT

PRECISION

VOLTAGE

REFERENCE

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

rightsof third parties that may result fromits 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 andregisteredtrademarks 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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与EVAL-AD1938AZ相关器件

型号	品牌	获取价格	描述	数据表
EVAL-AD1938EB	ADI	获取价格	4 ADC/8 DAC with PLL, 192 kHz, 24 Bit CODEC
EVAL-AD1939AZ	ADI	获取价格	8-Channel DAC with PLL and Differential Outputs, 192 kHz, 24 Bits
EVAL-AD1939EB	ADI	获取价格	4 ADC/8 DAC with PLL, 192 kHz, 24-Bit CODEC
EVAL-AD1940EB	ADI	获取价格	SigmaDSP-TM Multichannel 28-Bit Audio Processor
EVAL-AD1953EB	ADI	获取价格	SigmaDSP⑩ 3-Channel, 26-Bit Signal Processing
EVAL-AD1954EB	ADI	获取价格	SigmaDSPâ¢ 3-Channel, 26-Bit Signal Processi
EVAL-AD1955EB	ADI	获取价格	High Performance Multibit with SACD Playback
EVAL-AD1958EB	ADI	获取价格	PLL/Multibit DAC
EVAL-AD1959EB	ADI	获取价格	PLL/Multibit DAC
EVAL-AD1974EB	ADI	获取价格	4 ADC with PLL, 192 kHz, 24-Bit Codec

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