Datasheet

TAS5508C
www.ti.com SLES257–SEPTEMBER 2010
8-Channel Digital Audio PWM Processor
Check for Samples: TAS5508C
1 Introduction PWM
1.1 Features
1234
Update Rates
• General Features
– Four Bass and Treble Tone Controls with
– Automated Operation With an Easy-to-Use
±18-dB Range, Selectable Corner
Control Interface
Frequencies, and Second-Order Slopes
– I
2
C Serial-Control Slave Interface
• L, R, and C
– Integrated AM Interference-Avoidance
• LS, RS
Circuitry
• LR, RR
– Single, 3.3-V Power Supply
• Sub
– 64-Pin TQFP Package
– Configurable Loudness Compensation
– 5-V Tolerant Inputs
– Two Dynamic Range Compressors With Two
• Audio Input/Output
Thresholds, Two Offsets, and Three Slopes
– Automatic Master Clock Rate and Data
– Seven Biquads Per Channel
Sample Rate Detection
– Full 8×8 Input Crossbar Mixer. Each
– Eight Serial Audio Input Channels
Signal-Processing Channel Input Can Be
– Eight PWM Audio Output Channels
Any Ratio of the Eight Input Channels.
Configurable as Six Channels With Stereo
– 8×2 Output Mixer – Channels 1–6. Each
Lineout or Eight Channels
Output Can Be Any Ratio of Any Two
– Line Output Is a PWM Output to Drive an
Signal-Processed Channels.
External Differential-Input Operational
– 8×3 Output Mixer – Channels 7 and 8. Each
Amplifier
Output Can Be Any Ratio of Any Three
– Headphone PWM Output to Drive an External
Signal-Processed Channels.
Differential Amplifier Like the TPA112
– Three Coefficient Sets Stored on the Device
– PWM Outputs Support Single-Ended and
Can Be Selected Manually or Automatically
Bridge-Tied Loads
(Based on Specific Data Rates).
– 32-, 38-, 44.1-, 48-, 88.2-, 96-, 176.4-, and
– DC Blocking Filters
192-kHz Sampling Rates
– Able to Support a Variety of Bass
– Data Formats: 16-, 20-, or 24-Bit
Management Algorithms
Left-Justified, I
2
S, or Right-Justified Input
• PWM Processing
Data
– 32-Bit Processing PWM Architecture With 40
– 64-Fs Bit-Clock Rate
Bits of Precision
– 128-, 192-, 256-, 384-, 512-, and 768-Fs
– 8× Oversampling With Fifth-Order Noise
Master Clock Rates (Up to a Maximum of
Shaping at 32 kHz–48 kHz, 4× Oversampling
50 MHz)
at 88.2 kHz and 96 kHz, and 2× Oversampling
• Audio Processing
at 176.4 kHz and 192 kHz
– 48-Bit Processing Architecture With 76 Bits
– >102-dB Dynamic Range
of Precision for Most Audio Processing
– THD+N < 0.1%
Features
– 20-Hz–20-kHz, Flat Noise Floor for 44.1-, 48-,
– Volume Control Range 36 dB to –127 dB
88.2-, 96-, 176.4-, and 192-kHz Data Rates
• Master Volume Control Range of 18 dB to
– Digital De-Emphasis for 32-, 44.1-, and
–100 dB
48-kHz Data Rates
• Eight Individual Channel Volume Control
– Flexible Automute Logic With Programmable
Ranges of 18 dB to –127 dB
Threshold and Duration for Noise-Free
– Programmable Soft Volume and Mute
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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PRODUCTION DATA information is current as of publication date.
Copyright © 2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.