TAS5086 Datasheet, PDF (1/33 Pages) Texas Instruments – PurePath Digital AUDIO SIX-CHANNEL PWM PROCESSOR

TAS5086
www.ti.com
SLES131 – FEBRUARY 2005
PurePath Digital™ AUDIO SIX-CHANNEL PWM PROCESSOR
FEATURES
• Audio Input/Output
– Automatic Master Clock Rate and Data
Sample Rate Detection
– Four Serial Audio Inputs (Eight Channels)
– Support for 32, 44.1, 48, 88.2, 96, 176.4, and
192-kHz Sampling Rates
– Data Formats: 16-, 20-, or 24-Bit Input Data
Left, Right, and I²S,
– 64 or 48 × Fs Bit Clock Rate
– 128, 192, 256, 384, and 512 × Fs Master
Clock Rates (Up to a Maximum of 50 MHz)
– Six PWM Audio Output Channels
– Any Output Channel Can be Mapped to Any
Output Pin
– Support Single-Ended and Bridge Tied Load
– I²S Serial Audio Output
• Audio Processing
– Volume Control Range +48 dB to – 100 dB
– Master Volume Control +24 dB to –100 dB in
0.5 dB Increments
– Eight Individual Channel Volume Controls
With +24 dB to –100 dB Attenuation in 0.5
dB Increments
– Serial Output Can be Produced by
Down-Mix of 5.1 Channel Input or 4^th Serial
Input
– 5.1 Channel Down Mix to 2.1 or 3.1 PWM
Output Speaker System
– Integrated Bass Management
– Two Programmable Biquads in Subwoofer
Channel
– Full Six Channel Input and Output Mapping
– Selectable DC Blocking Filters
• PWM Processing
– 8x Over Sampling With 4^th Order Noise
Shaping at 44.1–48 kHz, 4x Over Sampling
at 88.2, 96 kHz, 2x Over Sampling at 176.4,
192 kHz, and 12x Over Sampling at 32 kHz
– ≥105-dB Dynamic Range
(TAS5086+TAS5186)
– THD < 0.06% (TAS5086 Only)
– 20 – 20 kHz Flat Noise Floor for 44.1, 48,
88.2, 96, 176.4 and 192 kHz Data Rates
– Digital De-emphasis for 32 kHz, 44.1 kHz
and 48 kHz Data Rates
– Intelligent AM Interference Avoidance
System Provides Clear AM Reception
– Adjustable Modulation Limit From 93.8% to
99.2%
• General Features
– Automated Operation With Easy to Use
Control Interface
– I²C Serial Control Slave Interface
– Control Interface Operational Without MCLK
– Single 3.3-V Power Supply
– 38-Pin TSSOP Package
DESCRIPTION
The TAS5086 is a six channel digital pulse width
modulator (PWM) that provides both advanced per-
formance and a high level of system integration.
TAS5086 is designed to interface seamlessly with
most audio digital signal processors and MPEG
decoders accepting a wide range of input data and
clock formats.
The TAS5086 drives six channels of speakers in
either single-ended or bridge tied load configurations
that accept a 1N+1 interface format. TAS5086 also
supports 2N+1 power stages with the use of some
external logic (e.g. TAS5112). Stereo line out in I²S
format is available with either a pass-through signal
(SDIN4) or an internal down mix.
TAS5086 uses AD modulation operating at a 384-kHz
switching rate for 32-, 44.1-, 48-, 88.2-, 96-, 176.4-,
and 192-kHz data. The 8 x over sampling combined
with the 4th order noise shaper provides a broad flat
noise floor and excellent dynamic range from 20 Hz
to 20 kHz.
TAS5086 is clock slave only device. TAS5086 re-
ceives MCLK, SCLK and LRCLK from other system
components. TAS5086 accepts master clock rates of
128, 192, 256, 384, and 512 Fs. TAS5086 accepts a
64 Fs master clock for 176.4-kHz and 192-kHz data.
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 data sheet.
PurePath Digital is a trademark of Texas Instruments.
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.
Copyright © 2005, Texas Instruments Incorporated