TLV320DAC32_16 Datasheet, PDF (1/70 Pages) Texas Instruments – LOW POWER STEREO AUDIO DAC FOR PORTABLE AUDIO/TELEPHONY

TLV320DAC32
www.ti.com........................................................................................................................................ SLAS506B – NOVEMBER 2006 – REVISED DECEMBER 2008
LOW POWER STEREO AUDIO DAC FOR PORTABLE AUDIO/TELEPHONY
FEATURES
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• Stereo Audio DAC
– 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
• Two Audio Input Pins
– Allows Analog Bypass Path
• Four Audio Output Drivers
– Stereo 8-Ω, 500-mW/Channel Speaker Drive
Capability
– Stereo Fully Differential or Single-Ended
Headphone Drivers
• 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
• Extensive Modular Power Control
• 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 נ5 mm 32-QFN
DESCRIPTION
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 stereo DAC
and analog inputs, through 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.
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.
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.
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.
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.
The TLV320DAC32 is a software-compatible subset
of the existing TLV320AIC32 and TLV320AIC33
audio codecs, allowing simple transition from a
system with record and playback to a system with
playback only.
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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 © 2006–2008, Texas Instruments Incorporated