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Low Power Stereo Audio Codec for Portable Audio/Telephony (Rev. B)
Texas Instruments

Description
The TLV320AIC32 is a low-power stereo-audio codec with a stereo headphone amplifier, as well as multiple inputs and outputs, programmable in single-ended or fully-differential configurations. Extensive register-based power control is included, enabling stereo 48-kHz DAC playback as low as 14 mW from a 3.3-V analog supply, making it ideal for portable, battery-powered audio and telephony applications.The record path of the TLV320AIC32 contains integrated microphone bias, digitally-controlled stereo-microphone pre-amp, and automatic gain control (AGC), with mix/mux capability among the multiple analog inputs. The playback path includes mix/mux capability from the stereo DAC and selected inputs, through programmable volume controls, to the various outputs.The TLV320AIC32 contains four high-power output drivers as well as two fully differential output drivers. The high-power output drivers are capable of driving a variety of load configurations, including up to four channels of single-ended 16- headphones using ac-coupling capacitors, or stereo 16- headphones in a cap-less output configuration. In addition, pairs of drivers can be used to drive 8- 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 stereo-audio ADC supports sampling rates from 8 kHz to 96 kHz and is preceded by programmable gain amplifiers providing up to +59.5 dB analog gain for low-level microphone inputs.The serial control bus supports 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 TLV320AIC32 operates from an analog supply 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. The device is available in a 5 5 mm, 32-lead QFN package.
Features
Stereo Audio DAC100 dB A Signal-to-Noise Ratio16/20/24/32-Bit DataSupports Rates From 8 kHz to 96 kHz3D/Bass/Treble/EQ/De-Emphasis EffectsStereo Audio ADC92 dB A Signal-to-Noise RatioSupports Rates From 8 kHz to 96 kHzSix Audio Input PinsSix Stereo Single-Ended InputsSix Audio Output DriversStereo 8-, 500 mw/Channel Speaker Drive CapabilityStereo Fully-Differential or Single-Ended Headphone DriversFully Differential Stereo Line OutputsLow Power: 14-mW Stereo, 48-kHz Playback With 3.3-V Analog SupplyProgrammable Input/Output Analog GainsAutomatic Gain Control (AGC) for RecordProgrammable Microphone Bias LevelProgrammable PLL for Flexible Clock GenerationI2C Control BusAudio Serial Data Bus Supports I2S, Left/Right-Justified, DSP, and TDM ModesExtensive Modular Power ControlPower Supplies:Analog: 2.7 V - 3.6 VDigital Core: 1.525 V - 1.95 VDigital I/O: 1.1 V - 3.6 VAvailable Packages: 5 5 mm, 32-Pin QFN

Related Datasheets
Part Number Description Category
? ?TLV320AIC23B Stereo Audio CODEC, 8-to 96-KHz, With Integrated Headphone Amplifier (Rev. H) Passives - Filters, Oscillators and Resonators
? ?TLV320AIC31 Low Power Stereo Audio Codec for Portable Audio/Telephony (Rev. B) Passives - Filters, Oscillators and Resonators
? ?TLV320AIC33 Low Power Stereo Audio Codec for Portable Audio/Telephony (Rev. A) Passives - Filters, Oscillators and Resonators
? ?TLV320AIC34 Four Channel Low Power Audio Codec (Rev. A) Passives - Filters, Oscillators and Resonators
? ?TMS320DM6446 TMS320DM6446 Digital Media System-on-Chip (Rev. E) EDA - IC Design



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