AD1955ARS Analog Devices Inc, AD1955ARS Datasheet

AD1955ARS

Manufacturer Part Number

AD1955ARS

Description

IC DAC AUDIO MULTIBIT 28-SSOP

Manufacturer

Analog Devices Inc

Datasheet

1.AD1955ARSZ.pdf (24 pages)

Specifications of AD1955ARS

Rohs Status

RoHS non-compliant

Number Of Bits

16, 24

Data Interface

Serial

Number Of Converters

Voltage Supply Source

Analog and Digital

Power Dissipation (max)

210mW

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

28-SSOP

For Use With

EVAL-AD1955EBZ - BOARD EVAL FOR AD1955

Settling Time

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

AD1955ARSZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

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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. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

FEATURES

5 V Power Supply Stereo Audio DAC System

Accepts 16-/18-/20-/24-Bit Data

Supports 24-Bit, 192 kHz Sample Rate PCM Audio Data

Supports SACD Bit Stream and External Digital Filter

Accepts a Wide Range of PCM Sample Rates Including:

Multibit Sigma-Delta Modulator with "Perfect Differen-

Data Directed Scrambling DAC––Low Sensitivity to Jitter

Supports SACD Playback with "Bit Expansion" Filter

Differential Current Output for Optimum Performance

8.64 mA p-p Differential Output

120 dB SNR/DNR (not muted) at 48 kHz Sample Rate

123 dB SNR/DNR (Mono)

–110 dB THD + N

110 dB Stop-Band Attenuation with

On-Chip Clickless Volume Control

Supports SACD-Mute Pattern Detection

Supports 64 f

Internal Digital Filter Pass-Through for External Filter

Master Clock: 256 f

Hardware and Software Controllable Clickless Mute

Serial (SPI) Control for Serial Mode, Number of Bits,

Digital De-Emphasis for 32 kHz, 44.1 kHz, and 48 kHz

Flexible Serial Data Port with Right-Justified, Left-

28-Lead SSOP Plastic Package

APPLICATIONS

High End DVD Audio

SACD

Home Theater Systems

Automotive Audio Systems

Sampling Musical Keyboards

Digital Mixing Consoles

Digital Audio Effects Processors

Interface

32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, and

192 kHz

tial Linearity Restoration" for Reduced Idle Tones and

Noise Floor

(A-Weighted Stereo)

Pass-Band Ripple

Sample Rate, Volume, Mute, De-Emphasis, Mono Mode

Sample Rates

Justified, I

Oversampling Digital Filter

S, and DSP Modes

/128 f

, 512 f

DSD SACD with Phase Mode

, 768 f

0.0002 dB

High Performance Multibit - DAC

FILTER INPUT

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 DACs. Other

features include an on-chip clickless stereo attenuator and mute

capability, programmed through an SPI compatible serial control

port. The AD1955 is fully compatible with all known DVD audio

formats including 192 kHz as well as 96 kHz sample frequencies

and 24 bits. It is also backward compatible by supporting 50 µs/

15 µs digital de-emphasis intended for “redbook” compact discs,

as well as de-emphasis at 32 kHz and 48 kHz sample rates.

The AD1955 has a very flexible serial data input port that

allows for glueless interconnection to a variety of ADCs, DSPs,

SACD decoders, external digital filters, AES/EBU receivers, and

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

Tel: 781/329-4700

Fax: 781/326-8703

16-/20-/24-BIT

AUDIO DATA/

EXTERNAL

DIGITAL

3/4

FUNCTIONAL BLOCK DIAGRAM

CURRENT OUTPUT

I-DAC

L-CH

NOISE-SHAPED

FILTER ENGINE

DIFFERENTIAL

CLOCK INPUT

SCRAMBLING

AUTO-CLOCK

SERIAL DATA

INTERFACE

MASTER

DIVIDER

DIGITAL

I-DAC

R-CH

with SACD Playback

MUX

SPI CONTROL

MULTIBIT -

MODULATOR

DATA INPUT

EXTERNAL

CONTROL

FILTER I/F

REFERENCE

VOLTAGE

S/H

DSD FILTER

(continued on page 12)

AD1955

BITSTREAM

INPUT

DSD

www.analog.com

DIGITAL

SUPPLY

RESET

MUTE

ANALOG

SUPPLY

ZERO

FLAGS

Related parts for AD1955ARS

AD1955ARS Summary of contents

Page 1

FEATURES 5 V Power Supply Stereo Audio DAC System Accepts 16-/18-/20-/24-Bit Data Supports 24-Bit, 192 kHz Sample Rate PCM Audio Data Supports SACD Bit Stream and External Digital Filter Interface Accepts a Wide Range of PCM Sample Rates Including: ...

Page 2

AD1955–SPECIFICATIONS TEST CONDITIONS (Unless otherwise noted.) Analog Supply Voltages ( Digital Supply Voltages ( ...

Page 3

DIGITAL I/O (– +85 C, unless otherwise noted.) Parameter Input Voltage Input Voltage Input Leakage ( 2 Input Leakage ( 0.8 ...

Page 4

AD1955 SPECIFICATIONS (continued) GROUP DELAY Chip Mode Group Delay Calculation INT8 Mode 5553/(128 INT4 Mode 5601/(64 INT2 Mode 5659/(32 Specifications subject to change without notice. DIGITAL TIMING (Guaranteed over – +85 C, AVDD = DVDD = 5.0 V ...

Page 5

... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Model AD1955ARS AD1955ARSRL EVAL-AD1955EB *RS = Shrink Small Outline Package CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection ...

Page 6

AD1955 Pin No. I/O Mnemonic 1 DVDD 2 Input LRCLK/EF_WCLK 3 Input BCLK/EF_BCLK 4 Input SDATA/EF_LDATA 5 Input EF_RDATA 6 I/O DSD_SCLK 7 Input DSD_LDATA 8 Input DSD_RDATA 9 I/O DSD_PHASE 10 AGND 11 Output IOUTR+ 12 Output IOUTR– 13 ...

Page 7

TPC 1. Pass-Band Response, 8 Mode, 48 kHz Sample Rate TPC 2. Complete Response, 8 Mode, 48 kHz Sample Rate TPC 3. 44 kHz Pass-Band Response 4 Sample Rate REV. 0 Typical Performance Characteristics–AD1955 TPC 4. Complete Response, 4 Mode, ...

Page 8

AD1955 TPC 7. DSD Digital Filter Pass Band TPC 8. DSD Digital Filter Response, Input Sample Rate = 2.8224 MHz TPC 9. FFT Plot, THD + N = –110 dBFS, PCM kHz, 0 dBFS @ 1 kHz ...

Page 9

TPC 13. THD + N vs. Amplitude Plot, PCM kHz, 0 dBFS to –120 dBFS Input @ 1 kHz TPC 14. THD + N vs. Frequency Plot, PCM kHz, 0 dBFS Input TPC 15. ...

Page 10

AD1955 TPC 19. De-emphasis Frequency Response, PCM kHz, 0 dBFS Input TPC 20. FFT Plot, PCM kHz, 0 dBFS @ 1 kHz kHz TPC 21. FFT Plot, PCM ...

Page 11

TPC 25. FFT Plot, PCM SR = 192 kHz, –60 dBFS Input @ 1 kHz TPC 26. FFT Plot, PCM SR = 192 kHz, Zero Input TPC 27. Wideband FFT Plot, PCM SR = 192 kHz, 0 dBFS @ 60 ...

Page 12

AD1955 TPC 31. FFT Plot DSD 44.1 kHz dBFS @ 10 kHz (continued from page 1) sample rate converters. The AD1955 can be configured in left- 2 justified right-justified, or DSP serial ...

Page 13

Serial Data Format in External Digital Filter Mode In the External Digital Filter Mode, the AD1955 will accept up to 24-bit serial, twos complement, MSB-first data from an external digital filter, an HDCD decoder general-purpose DSP. If the ...

Page 14

AD1955 For example, with the stereo circuits given in Figures 7 through 10, this gives – 2.00 kΩ resistor ...

Page 15

LEFT CHANNEL LRCLK BCLK MSB SDATA LRCLK LEFT CHANNEL BCLK SDATA MSB LRCLK BCLK SDATA MSB LRCLK LEFT CHANNEL BCLK SDATA MSB NOTES 1. DSP MODE DOES NOT IDENTIFY CHANNEL LRCLK NORMALLY OPERATES AT EXCEPT FOR DSP MODE, ...

Page 16

AD1955 NORMAL MODE PHASE MOD MODE DSD_LDATA, DSD_RDATA CLATCH CCLK D15 D14 CDATA t CDS D0 D1 DSD_DATA DSD_BCLK D0 DSD_DATA D0 DSD_BCLK DSD_PHASE_0 DSD_PHASE_1 DSD_PHASE_2 DSD_PHASE_3 Figure 3. DSD Modes DSD_PHASE t DPHS DSD_SCLK t DSDS t DSDH Figure ...

Page 17

DVDD C1 0.1 F DVDD MCLK MCLK RDATA EF_RDATA SDATA SDATA/EF_LDATA BCLK/EF_BCLK BCLK LRCLK LRCLK/EF_WCLK DSD_PHASE DSD_PHASE DSD_RDATA DSD_RDATA DSD_LDATA DSD_LDATA DSD_SCLK DSD_SCLK CDATA CDATA CLATCH CLATCH CCLK CCLK MUTE MUTE ZEROR ZEROR ZEROL ZEROL PD/RST PD/RST DGND REV. 0 ...

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AD1955ARS Analog Devices Inc, AD1955ARS Datasheet

AD1955ARS

Specifications of AD1955ARS

Available stocks

Related parts for AD1955ARS

AD1955ARS Summary of contents

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