TAS5729MD_16 Datasheet, PDF (1/65 Pages) Texas Instruments – Input Class-D Amplifier

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TAS5729MD
SLOS836D – MAY 2013 – REVISED JANUARY 2016
TAS5729MD 12-W I²S Input Class-D Amplifier With Digital Audio Processor and
DirectPath™ HP and Line Driver
1 Features
•1 Audio I/O Configuration:
– Single Stereo I²S Input
– Stereo BTL or Mono PBTL Operation
– 8-kHz to 48-kHz Sample Rates
– Headphone Amplifier and Line Driver
• Audio Digital Signal Processing:
– Digital Equalization
– Two-Band Automatic Gain Limiting
– Coarse and Fine Volume Control
– PWM Level Meter
• General Operational Features:
– I²C Software Control With Programmable I²C
Address (1010100[^R/_W] or 1010101[^R/_W])
– AD, BD, Ternary Modulation
– Overtemperature, Undervoltage, Clock, and
Overcurrent Protection
• Audio Performance (PVDD = 18 V, R_LOAD = 8 Ω)
– Idle Channel Noise = 56 µVrms
– THD+N at 1 W, 1 kHz, = 0.15%
– SNR = 105 dB (reference to 0 dBFS)
2 Applications
• LCD/LED TV and Multipurpose Monitors
• Sound Bars, Docking Stations, PC Audio
• Consumer Audio Equipment
3 Description
The TAS5729MD is a stereo I²S input device which
includes a digital auto processor with two-band
automatic gain limiting (AGL), digital equalization,
course and fine volume control, and PWM level
meter. The AGL is an enhanced dynamic range
compression (DRC) function. The device can operate
from a wide PVDD power supply range to enable use
in numerous applications. The TAS5729MD operates
with a nominal supply voltage from 4.5 to 24 VDC.
The device is controlled by an I²C control port. The
device has an integrated DirectPath™ headphone
amplifier and line driver to increase system-level
integration and reduce total solution costs.
An optimal mix of thermal performance and device
cost is provided in the 200-mΩ R_DS(ON) of the output
MOSFETs. Additionally, a thermally enhanced
HTSSOP provides excellent operation in the elevated
ambient temperatures found in today's modern
consumer electronic devices.
The entire TAS5729xx family is pin-to-pin compatible
allowing a single hardware solution to be used across
several end application platforms. Additionally, the I²C
register map in the entire TAS5729xx family is
identical to ensure low development overhead to
choose between devices based upon system level
requirements.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
TAS5729MD
HTSSOP (48) 12.50 mm × 6.10 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Signal Processing Flow
Power at 10% THD+N vs PVDD
14 ^{TA = 25°C}
12
10
8
6
RL = 8Ω, THD+N = 1%
4
RL = 8Ω, THD+N = 10%
2
RL = 4Ω, THD+N = 1%
RL = 4Ω, THD+N = 10%
0
8
10
12
14
16
18
20
22
24
Supply Voltage (V)
C002
NOTE: Dashed lines represent thermally limited
region.
1
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.