IC DGTL AUDIO PWM PROC 64-TQFP

TAS5508APAG

Manufacturer Part NumberTAS5508APAG
DescriptionIC DGTL AUDIO PWM PROC 64-TQFP
ManufacturerTexas Instruments
TypePWM Processor
TAS5508APAG datasheet
 


Specifications of TAS5508APAG

ApplicationsDVDMounting TypeSurface Mount
Package / Case64-TQFP, 64-VQFPFor Use WithTAS5342DDV6EVM - TAS5342DDV6EVMTAS5508-5142K7EVM - EVAL MODULE FOR TAS5508B/TAS5142TAS5508-5122C6EVM - EVAL MODULE FOR TAS5508B/TAS5122TAS5508-5121K8EVM - EVAL MODULE FOR TAS5508B/TAS5121
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names296-17475
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2.12 PWM
The TAS5508A has eight channels of high-performance digital PWM modulators that are designed to drive
switching output stages (back ends) in both single-ended (SE) and H-bridge (bridge-tied load)
configurations. The TAS5508A device uses noise-shaping and sophisticated, error-correction algorithms to
achieve high power efficiency and high-performance digital audio reproduction. The TAS5508A uses an
AD1 PWM modulation scheme combined with a fifth-order noise shaper to provide a 102-dB SNR from
20 Hz to 20 kHz.
The PWM section accepts 32-bit PCM data from the DAP and outputs eight PWM audio output channels
configurable as either:
Six channels to drive power stages and two channels to drive a differential-input active filter to provide
a separately controllable stereo lineout
Eight channels to drive power stages
The TAS5508A PWM section output supports both single-ended and bridge-tied loads.
The PWM section provides a headphone PWM output to drive an external differential amplifier like the
TPA112. The headphone circuit uses the PWM modulator for channels 1 and 2. The headphone does not
operate while the six or eight back-end drive channels are operating. The headphone is enabled via a
headphone-select terminal or I
The PWM section has individual channel dc blocking filters that can be enabled and disabled. The filter
cutoff frequency is less than 1 Hz.
The PWM section has individual channel de-emphasis filters for 32, 44.1, and 48 kHz that can be enabled
and disabled.
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8-Channel Digital Audio PWM Processor
Gain Coefficient
28
48
48
Gain Coefficient
28
48
48
Output
Gain Coefficient
28
48
48
Gain Coefficient
28
48
48
Output
48
Gain Coefficient
28
48
Figure 2-18. Output Mixers
2
C command.
TAS5508A
SLES119A – FEBRUARY 2004 – REVISED JULY 2009
1, 2, 3, 4, 5, or 6
7 or 8
M0011-02
Description
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