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TLV320DAC32
SLAS506A–NOVEMBER 2006–REVISED NOVEMBER 2006
LOW POWER STEREO AUDIO DAC FOR PORTABLE AUDIO/TELEPHONY
FEATURES
DESCRIPTION
•
Stereo Audio DAC
The TLV320DAC32 is a low power stereo audio DAC
with and integrated power amplifier designed to drive
stereo headphones or speakers. This device also
has a pair of analog inputs which allow routing of
external signals to the output amplifiers. The
playback path includes a mix/mux capability from the
–
–
–
–
95-dBA Signal-to-Noise Ratio
16/20/24/32-Bit Data
Supports Rates From 8 kHz to 96 kHz
3D/Bass/Treble/EQ/De-emphasis Effects
stereo
DAC
and
analog
inputs,
through
•
•
Two Audio Input Pins
Allows Analog Bypass Path
Four Audio Output Drivers
programmable volume controls, to the headphone
outputs. Extensive register-based power control is
included, enabling stereo 96-kHz playback as low as
20mW from a 3.3-V analog supply, making it ideal for
portable battery-powered audio and telephony
applications.
–
–
Stereo 8-Ω, 500-mW/Channel Speaker Drive
Capability
–
Stereo Fully Differential or Single-Ended
Headphone Drivers
The TLV320DAC32 contains four high-power output
drivers. These drivers are capable of driving a variety
of load configurations, including up to four channels
of single-ended 16-Ω headphones using ac-coupling
capacitors, or stereo 16-Ω headphones in a cap-less
output configuration. In addition, pairs of drivers can
be used to drive 8-Ω speakers in a BTL configuration
at 500 mW per channel.
•
Low Power: 18-mW Stereo 48-kHz Playback
With 3.3-V Analog Supply
•
•
•
•
Programmable Input/Output Analog Gains
Programmable Microphone Bias Level
Headphone Jack Detection
Programmable PLL for Flexible Clock
Generation
I2C Control Bus
Audio Serial Data Bus Supports I2S,
Left/Right-Justified, DSP, and TDM Modes
The stereo audio DAC supports sampling rates from
8-kHz to 96-kHz and includes programmable digital
filtering in the DAC path for 3D, bass, treble,
midrange effects, speaker equalization, and
de-emphasis for 32-kHz, 44.1-kHz, and 48-kHz
rates.
•
•
•
•
Extensive Modular Power Control
The serial control bus uses the I2C protocol, while
the serial audio data bus is programmable for I2S,
left/right-justified, DSP, or TDM modes. A highly
programmable PLL is included for flexible clock
generation and support for all standard audio rates
from a wide range of available MCLKs, varying from
512-kHz to 50-MHz, with special attention paid to the
most popular cases of 12-MHz, 13-MHz, 16-MHz,
19.2-MHz, and 19.68-MHz system clocks.
Internal Selectable LDO Allows Operation
From Single 3.3-V Supply
•
Power Supplies:
–
–
–
Analog: 2.7 V–3.6 V.
Digital Core: 1.525 V–1.95 V
Digital I/O: 1.1 V–3.6 V
•
Package: 5 × 5 mm 32-QFN
The TLV320DAC32 operates from analog supplies of
2.7 V – 3.6 V, a digital core supply of 1.525 V – 1.95
V, and a digital I/O supply of 1.1 V – 3.6 V. An
internal LDO regulator allows the device to internally
generate the lower voltage power supply needed for
digital core logic, thereby allowing full operation from
a single 3.3-V supply voltage.
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.
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 © 2006, Texas Instruments Incorporated
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