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Analog Devices - (AD1935 - AD1939) 4 ADC/8 DAC

Numéro de référence AD1935
Description (AD1935 - AD1939) 4 ADC/8 DAC
Fabricant Analog Devices 
Logo Analog Devices 





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Preliminary Technical Data
4 ADC/8 DAC with PLL,
192 kHz, 24 Bit CODEC
AD1935/AD1936/AD1937/AD1938/AD1939
Features
PLL generated (32-192kHz) or direct master clock
Low EMI design
109 dB DAC/ 107dB ADC Dynamic Range and SNR
-94dB THD+N
Single 3.3V Supply
Tolerance for 5V logic inputs
Supports 24-bits and 8 kHz - 192 kHz sample rates
Differential ADC input
Single-ended or Differential DAC output versions
Log volume control with "auto-ramp" function
Hardware and software controllable clickless mute
Software and hardware power-down
Right justified, left justified, I2S and TDM Modes
Master and slave modes up to 16 channel in/out
48-lead LQFP or 64-lead LQFP plastic package
Applications
Automotive audio systems
Home theater systems
Set-top boxes
Digital audio effects processors
GENERAL DESCRIPTION
The AD193X family are high performance, single-chip codecs that
provide 4 ADCs with differential input and 8 DACs with either
single-ended or differential output using ADI’s patented multibit
sigma-delta architecture. An SPI® or I2C® port is included, allowing
a microcontroller to adjust volume and many other parameters.
The AD193X family operates from 3.3V digital and analog supplies.
The AD193X is available in a 48-lead (SE output) or 64-lead
(differential output) LQFP package.
The AD193X 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 master clock from L-R clock, the
AD193X eliminates the need for a separate high frequency master
clock. It can also be used with a suppressed bit clock. The D-A and
A-D converters are designed using the latest ADI continuous time
architectures to further minimize EMI. By using 3.3V supplies,
power consumption is minimized, further reducing emissions.
Functional Block Diagram
Digital Audio
Input/Output
Analog
Audio
Inputs
AD193X
Serial Data Port
ADC
SDATAOUT
SDATAIN Digital
Digital
Filter
ADC Filter
&
ADC
CLOCKS
Volume
Control
ADC Timing Management
&
Control
(Clock & PLL)
Precision
Voltage
Reference
Control Port
SPI / I2C
DAC
DAC
DAC
DAC
DAC
DAC
DAC
DAC
Analog
Audio
Outputs
Control Data
Input/Output
Figure 1
Rev. PrI
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 companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2005 Analog Devices, Inc. All rights reserved.

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