TAS5508 datasheet(9/105 Pages) TI

9 / 105 page

Introduction PWM

1.1

Features

TAS5508

8-Channel Digital Audio PWM Processor

www.ti.com

SLES091D – FEBRUARY 2004 – REVISED JULY 2009

Frequencies, and Second-Order Slopes

• General Features

• L, R, and C

–

Automated Operation With an Easy-to-Use

• LS, RS

Control Interface

• LR, RR

–

I2C Serial-Control Slave Interface

• Sub

–

Integrated AM Interference-Avoidance

Circuitry

–

Configurable Loudness Compensation

–

Single, 3.3-V Power Supply

–

Two Dynamic Range Compressors With

Two Thresholds, Two Offsets, and Three

–

64-Pin TQFP Package

Slopes

–

5-V Tolerant Inputs

–

Seven Biquads Per Channel

• Audio Input/Output

–

Full 8

＝8 Input Crossbar Mixer. Each

–

Automatic Master Clock Rate and Data

Signal-Processing Channel Input Can Be

Sample Rate Detection

Any Ratio of the Eight Input Channels.

–

Eight Serial Audio Input Channels

–

＝2 Output Mixer – Channels 1–6. Each

–

Eight PWM Audio Output Channels

Output Can Be Any Ratio of Any Two

Configurable as Six Channels With Stereo

Signal-Processed Channels.

Lineout or Eight Channels

–

＝3 Output Mixer – Channels 7 and 8.

–

Line Output Is a PWM Output to Drive an

Each Output Can Be Any Ratio of Any

External Differential-Input Operational

Three Signal-Processed Channels.

Amplifier

–

Three Coefficient Sets Stored on the Device

–

Headphone PWM Output to Drive an

Can Be Selected Manually or Automatically

External Differential Amplifier Like the

(Based on Specific Data Rates).

TPA112

–

DC Blocking Filters

–

PWM Outputs Support Single-Ended and

–

Able to Support a Variety of Bass

Bridge-Tied Loads

Management Algorithms

–

32-, 38-, 44.1-, 48-, 88.2-, 96-, 176.4-, and

• PWM Processing

192-kHz Sampling Rates

–

32-Bit Processing PWM Architecture With

–

Data Formats: 16-, 20-, or 24-Bit

40 Bits of Precision

Left-Justified, I2S, or Right-Justified Input

–

＝ Oversampling With Fifth-Order Noise

Data

Shaping at 32 kHz–48 kHz, 4

＝

–

64-Fs Bit-Clock Rate

Oversampling at 88.2 kHz and 96 kHz, and

–

128-, 192-, 256-, 384-, 512-, and 768-Fs

＝ Oversampling at 176.4 kHz and 192 kHz

Master Clock Rates (Up to a Maximum of

–

>102-dB Dynamic Range

50 MHz)

–

THD+N < 0.1%

• Audio Processing

–

20-Hz–20-kHz, Flat Noise Floor for 44.1-,

–

48-Bit Processing Architecture With 76 Bits

48-, 88.2-, 96-, 176.4-, and 192-kHz Data

of Precision for Most Audio Processing

Rates

Features

–

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

–

Volume Control Range 36 dB to –127 dB

48-kHz Data Rates

• Master Volume Control Range of 18 dB

–

Flexible Automute Logic With

to –100 dB

Programmable Threshold and Duration for

• Eight Individual Channel Volume Control

Noise-Free Operation

Ranges of 18 dB to –127 dB

–

Intelligent AM Interference-Avoidance

–

Programmable Soft Volume and Mute

System Provides Clear AM Reception

Update Rates

–

Power-Supply Volume Control (PSVC)

–

Four Bass and Treble Tone Controls with

Support for Enhanced Dynamic Range in

＝18-dB Range, Selectable Corner

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this document.

PurePath Digital is a trademark of Texas Instruments.

Matlab is a trademark of Math Works, Inc.

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

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