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PCM1681 Datasheet Preview

PCM1681 Datasheet

Eight-Channel Audio Digital-to-Analog Converter

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Burr-Brown Audio

PCM1681, PCM1681-Q1

SLES211C – FEBRUARY 2008 – REVISED JULY 2015

PCM1681 24-Bit, 192-kHz Sampling, Enhanced Multilevel Delta-Sigma,

Eight-Channel Audio Digital-to-Analog Converter

1 Features

•1 Qualified for Automotive Applications: PCM1681-

• 24-Bit Resolution

• Analog Performance:

– Dynamic Range: 105 dB Typical

– SNR: 105 dB Typical

– THD+N: 0.002% Typical

– Full-Scale Output: 3.75 VPP Typical

• 4×/8× Oversampling Interpolation Filter:

– Stop-Band Attenuation: –57 dB

– Pass-Band Ripple: ±0.015 dB

• Sampling Frequency: 5 kHz to 200 kHz

• System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512

fS, 768 fS, or 1152 fS with Autodetect

• Zero Flags for Selectable Channel Combinations

• Flexible Mode Control:

– SPI™/I2C™ Dual Mode for Serial Port

– Parallel Hardware Control with 4 Functions

• User-Programmable Functions (in SPI/I2C):

– Flexible Audio Data Formats:

– Right-Justified, I2S™, Left-Justified, TDM,

DSP

– 16- and 24-Bit Audio Data

– Digital Attenuation: Mode Selectable

– 0 dB to –63 dB, 0.5 dB/step

– 0 dB to –100 dB, 1 dB/step

– Soft Mute

– Digital De-Emphasis

– Digital Filter Roll-Off: Sharp or Slow

– Oversampling Mode

• User-Programmable Functions (in H/W):

– Flexible Audio Data Formats:

– Right-Justified, I2S, Left-Justified, TDM

– Soft Mute

– Digital De-Emphasis

– Oversampling Mode

• Power Supply Voltage: 5-V Analog, 3.3-V Digital

• Package: 28-Lead HTSSOP PowerPAD™

• Operation Temperature Range:

– –40°C to 85°C for Consumer Grade

– –40°C to 105°C for Automotive Audio Grade

2 Applications

• Car Audio External Amplifiers

• Car Audio AVN Applications

• Integrated A/V Receivers

• DVD Movie and Audio Players

• HDTV Receivers

• DVD Add-On Cards for High-End PCs

• Digital Audio Workstations

• Other Multichannel Audio Systems

3 Description

The PCM1681 and PCM1681-Q1 are CMOS

monolithic integrated circuits which feature an eight-

channel 24-bit audio digital-to-analog converter

(DAC) and support circuitry in small 28-lead TSSOP

PowerPAD packages. The DACs utilize Burr-Brown's

enhanced multilevel delta-sigma (ΔΣ) architecture to

achieve excellent signal-to-noise performance and a

high tolerance to clock jitter.

Device Information(1)

PART NUMBER PACKAGE

BODY SIZE (NOM)

PCM1681

PCM1681-Q1

HTSSOP (28)

9.70 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Functional Block Diagram

BCK

LRCK

DATA1 (1, 2)

DATA2 (3, 4)

DATA3 (5, 6)

DATA4 (7, 8)

MS/ADR/FMT1

MC/SCL/DEMP

MD/SDA/MUTE

MSEL

SCK

Serial

Input

I/F

Oversampling

Digital Filter

With

Function

Controller

Enhanced

Multilevel

Delta-Sigma

Modulator

Function

Control

I/F

System Clock

Manager

Zero Detect

DAC

Output Amp and

Low-Pass Filter

Output Amp and

Low-Pass Filter

Output Amp and

Low-Pass Filter

Output Amp and

Low-Pass Filter

Output Amp and

Low-Pass Filter

Output Amp and

Low-Pass Filter

Output Amp and

Low-Pass Filter

Output Amp and

Low-Pass Filter

Power Supply

VOUT1

VOUT2

VOUT3

VCOM

VOUT4

VOUT5

VOUT6

VOUT7

VOUT8

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

etcTI

PCM1681 Datasheet Preview

PCM1681 Datasheet

Eight-Channel Audio Digital-to-Analog Converter

No Preview Available !

PCM1681, PCM1681-Q1

SLES211C – FEBRUARY 2008 – REVISED JULY 2015

www.ti.com

Table of Contents

1 Features .................................................................. 1

2 Applications ........................................................... 1

3 Description ............................................................. 1

4 Revision History..................................................... 2

5 Description (continued)......................................... 3

6 Pin Configuration and Functions ......................... 4

7 Specifications......................................................... 5

7.1 Absolute Maximum Ratings ..................................... 5

7.2 ESD Ratings: PCM1681 ........................................... 5

7.3 ESD Ratings: PCM1681-Q1 ..................................... 5

7.4 Recommended Operating Conditions....................... 6

7.5 Thermal Information .................................................. 6

7.6 Electrical Characteristics........................................... 7

7.7 Interface Timing Requirements................................. 9

7.8 Typical Characteristics ............................................ 10

8 Detailed Description ............................................ 14

8.1 Overview ................................................................. 14

8.2 Functional Block Diagram ....................................... 14

8.3 Feature Description................................................. 15

8.4 Device Functional Modes........................................ 24

8.5 Programming........................................................... 24

8.6 Register Maps ......................................................... 26

9 Application and Implementation ........................ 32

9.1 Application Information............................................ 32

9.2 Typical Application ................................................. 32

10 Power Supply Recommendations ..................... 34

11 Layout................................................................... 35

11.1 Layout Guidelines ................................................. 35

11.2 Layout Example .................................................... 35

12 Device and Documentation Support ................. 36

12.1 Device Support .................................................... 36

12.2 Documentation Support ........................................ 36

12.3 Related Links ........................................................ 36

12.4 Trademarks ........................................................... 36

12.5 Electrostatic Discharge Caution ............................ 36

12.6 Glossary ................................................................ 36

13 Mechanical, Packaging, and Orderable

Information ........................................................... 36

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision B (June 2008) to Revision C

Page

• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional

Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device

and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1

Changes from Revision A (June 2008) to Revision B

Page

• Added new device grade PCM1681-Q1 ................................................................................................................................. 1

• Changed device names in Operating Free-Air Temperature row of the Recommended Operating Conditions table ........... 6

• Changed device names in Operating Temperature row of Temperature Range section in the Electrical

Characteristics table ............................................................................................................................................................... 8

• Added third paragraph to PCB Layout Guidelines section................................................................................................... 35

Changes from Original (February 2008) to Revision A

Page

• Added last sub-level bullet to Features ................................................................................................................................. 1

• Added first two bullets to Applications ................................................................................................................................... 1

• Changed last sentence in Description ................................................................................................................................... 1

• Added last row to Recommended Operating Conditions table............................................................................................... 6

• Added second row to Temperature Range section of the Electrical Characteristics table .................................................... 8

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PCM1681 Datasheet

Eight-Channel Audio Digital-to-Analog Converter

PCM1681 Datasheet

Eight-Channel Audio Digital-to-Analog Converter

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