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AD1955ARSZRL

更新时间: 2024-01-11 20:59:23
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
10页 258K
描述
High Performance, Multibit Sigma-Delta DAC with SACD Playback

AD1955ARSZRL 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SSOP包装说明:PLASTIC, SSOP-28
针数:28Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.31商用集成电路类型:CONSUMER CIRCUIT
JESD-30 代码:R-PDSO-G28JESD-609代码:e0
长度:10.2 mm功能数量:1
端子数量:28最高工作温度:105 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:SSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:2 mm
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:5.3 mm

AD1955ARSZRL 数据手册

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aPRELIMINARY TECHNICAL DATA  
High Performance Multibit Σ∆ DAC  
with SACD Playback  
Preliminary Technical Data  
AD1955  
FEATURES  
APPLICATIONS  
5V Power Supply Stereo Audio DAC System.  
High-End DVD-Audio, SACD, CD, Home Theatre Systems, Automotive  
Audio Systems, Sampling Musical Keyboards, Digital Mixing  
Consoles, Digital Audio Effects Processors  
Accepts 16/18/20/24-Bit Data  
Supports 24-Bits, 192kHz Sample Rate PCM Audio Data  
Supports SACD bit-stream and External Digital Filter Interface  
Accepts a Wide Range of PCM Sample Rates Including:  
32kHz, 44.1kHz. 48kHz, 88.2kHz, 96kHz, and 192kHz  
Multibit Sigma Delta Modulator with “Perfect Differential  
Linearity Restoration” for Reduced Idle Tones and Noise Floor  
Data Directed Scrambling DAC - Least Sensitive to Jitter  
Supports SACD playback with “Bit Expansion” filter  
Differential Current Output for Optimum Performance  
8.64 mA p-p Output Current with +3dB headroom in SACD mode  
120 dB SNR/DNR (not muted) at 48KHz Sample Rate  
(A-Weighted Stereo)  
PRODUCT OVERVIEW  
The AD1955 is a complete high performance single-chip stereo digital  
audio playback system. It is comprised of a multibit sigma-delta  
modulator, high performance digital interpolation filters, and continuous-  
time differential current output DAC section. Other features include an  
on-chip clickless stereo attenuator, mute capability, programmed through  
an SPI-compatible serial control port. The AD1955 is fully compatible  
with all known DVD audio formats including 192kHz as well as 96kHz  
sample frequencies and 24-bits. It also is backwards compatible by  
supporting 50/15µs digital de-emphasis intended for “redbook” Compact  
Discs, as well as de-emphasis at 32kHz and 48kHz sample rate.  
The AD1955 has a very flexible serial data input port that allows for  
glueless interconnection to a variety of ADCs, DSPs, SACD decoder,  
external digital filter, AES/EBU receivers and sample rate converters.  
The AD1955 can be configured in Left-justified, I2S, Right-Justified, or  
DSP serial port compatible modes. It can support MSB first, twos-  
compliment format, 16, 18, 20 and 24 bits in all standard PCM modes.  
Also the AD1955 has an interface for SACD playback and an external  
digital filter interface for use with an external digital interpolation filter  
or HDCD decoder. The AD1955 uses a +5 V power supply. It is  
fabricated on a single monolithic integrated circuit and is housed in a 28-  
pin SSOP package for operation over the temperature range -400C to  
+1050C.  
123 dB SNR/DNR (Mono)  
-110 dB THD+N  
110 dB Stopband Attenuation with +/-0.0002dB Passband Ripple  
8 Times Oversampling Digital Filter  
On-chip Clickless Volume Control  
Supports SACD-Mute pattern detection  
Supports 64fs/128fs DSD SACD with phase modulation  
Internal Digital Filter pass-through for External Filter  
Master clock: 256fs,384fs,512fs,768fs  
Hardware and Software Controllable Clickless Mute  
Serial (SPI) Control for: Serial Mode, Number of Bits,  
Sample Rate, Volume, Mute, De-emphasis, Mono Mode  
Digital De-emphasis for 32, 44.1, 48 KHz Sample Rates  
Flexible Serial Data Port with Right-Justified, Left-Justified,  
I2S-Compatible and DSP Serial Port  
28 Lead SSOP Plastic Package  
FUNCTIONAL BLOCK DIAGRAM  
Master Clock  
Input  
Control Data  
Digital  
Supply  
Input  
3
Voltage  
Auto-Clock  
Divider  
SPI  
Reference  
Control  
Multibit  
Sigma-Delta  
Modulator  
L-ch  
Digital  
Filter  
16/20/24Bit  
Audio Data /  
External Digital  
Filter Input  
Serial Data  
I-DAC  
I-DAC  
Noise-  
Shaped  
Interface  
M
U
X
S/H  
Differential  
Engine  
Scrambling  
Current Output  
External  
Filter I/F  
3 / 4  
R-ch  
DSD  
Filter  
DSD  
Bitstream  
Input  
4
RESET  
MUTE  
Analog  
Supply  
ZERO Flags  
Rev. PrF 3/18/2002  
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 which may  
result from its use. No license is granted by implication or otherwise under  
any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
©Analog Devices, Inc., 2002  

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