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參數(shù)資料
| 型號： | AD1928YSTZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CODEC 2ADC 8DAC W/PLL 48LQFP |
| 標準包裝： | 2,000 |
| 類型： | 通用 |
| 數(shù)據(jù)接口： | 串行 |
| 分辨率（位）： | 24 b |
| ADC / DAC 數(shù)量： | 2 / 8 |
| 三角積分調變： | 是 |
| S/N 比，標準 ADC / DAC (db)： | 94 / 94 |
| 動態(tài)范圍，標準 ADC / DAC (db)： | 105 / 108 |
| 電壓 - 電源，模擬： | 3 V ~ 3.6 V |
| 電壓 - 電源，數(shù)字： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應商設備封裝： | 48-LQFP（7x7） |
| 包裝： | 帶卷 (TR) |
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2 ADC/8 DAC with PLL,
192 kHz, 24-Bit Codec
AD1928
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2007-2011 Analog Devices, Inc. All rights reserved.
FEATURES
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
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
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
APPLICATIONS
Automotive audio systems
Home theater systems
Set-top boxes
Digital audio effects processors
GENERAL DESCRIPTION
The AD1928 is a high performance, single-chip codec that
provides two analog-to-digital converters (ADCs) with differ-
ential 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. The AD1928 operates from 3.3 V digital and analog
supplies. The AD1928 is available in a 48-lead (single-ended
output) LQFP package. Other members of this family include a
differential DAC output version.
The AD1928 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 AD1928 eliminates the
need for a separate high frequency master clock and can be
used with a suppressed bit clock. The digital-to-analog and
analog-to-digital converters 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.
FUNCTIONAL BLOCK DIAGRAM
SERIAL DATA PORT
AD1928
ADC
DAC
SDATA
OUT
SDATA
IN
CLOCKS
06
62
3-
0
01
ANALOG
AUDIO
OUTPUTS
DIGITAL
FILTER
AND
VOLUME
CONTROL
DIGITAL AUDIO
INPUT/OUTPUT
TIMING MANAGEMENT
AND CONTROL
(CLOCK AND PLL)
CONTROL PORT
SPI
ANALOG
AUDIO
INPUTS
QUAD
DEC
FILTER
48kHz/
96kHz/
192kHz
CONTROL DATA
INPUT/OUTPUT
PRECISION
VOLTAGE
REFERENCE
Figure 1.
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