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TLV320DAC32

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LOW POWER STEREO AUDIO DAC FOR PORTABLE AUDIO/TELEPHONY

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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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