Texas Instruments TLV320AIC33 Low Power Stereo Audio Codec
Texas Instruments TLV320AIC33 Low Power Stereo Audio Codec has a stereo headphone amplifier and multiple inputs and outputs programmable in single-ended or fully differential configurations. Extensive register-based power control is included, enabling stereo 48kHz DAC playback as low as 14mW from a 3.3V analog supply, making it ideal for portable battery-powered audio and telephony applications. The record path of the TLV320AIC33 contains integrated microphone bias, digitally controlled stereo microphone preamplifier, 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 to the various outputs through programmable volume controls.
The TLV320AIC33 contains four high-power output drivers and three fully differential output drivers. The high-power output drivers can drive a variety of load configurations, including up to four channels of single-ended 16Ω headphones using ac-coupling capacitors or stereo 16Ω headphones in a capacitorless output configuration. In addition, pairs of drivers can be used to drive 8Ω speakers in a BTL configuration at 500nW per channel. The stereo audio DAC supports sampling rates from 8kHz to 96kHz and includes programmable digital filtering in the DAC path for 3D, bass, treble, midrange effects, speaker equalization, and de-emphasis for 32kHz, 44.1kHz, and 48kHz rates. The stereo audio ADC supports sampling rates from 8kHz to 96kHz and is preceded by programmable gain amplifiers providing up to +59.5dB analog gain for low-level microphone inputs.
The serial control bus supports SPI or I2C protocols, 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 512kHz to 50MHz, with particular attention paid to the most popular cases of 12MHz, 13MHz, 16MHz, 19.2MHz, and 19.68MHz system clocks. The Texas Instruments TLV320AIC33 operates from an analog supply of 2.7V to 3.6V. It has a digital core supply of 1.65V to 1.95V and a digital I/O supply of 1.1V to 3.6V. The device is available in 5mm × 5mm 80-ball MicroStar Junior™ BGA and 7mm × 7mm 48-lead QFN.
Features
- Stereo audio DAC
- 100dBA signal-to-noise ratio
- 16/20/24/32-bit data
- Supports rates from 8kHz to 96kHz
- 3D/Bass/Treble/EQ/De-emphasis effects
- Stereo audio ADC
- 92dBA signal-to-noise ratio
- Supports rates from 8kHz to 96kHz
- Ten audio input pins
- Programmable in single-ended or fully differential configurations
- 3-state capability for floating input configurations
- Seven audio output drivers
- Stereo 8Ω, 500mW/channel speaker drive capability
- Stereo fully differential or single-ended headphone drivers
- Fully differential stereo line outputs
- Fully differential mono output
- Low power: 14mW stereo 48kHz playback with 3.3V analog supply
- Programmable input/output analog gains
- Automatic Gain Control (AGC) for record
- Programmable microphone bias level
- Programmable PLL for flexible clock generation
- Control bus selectable SPI or I2C
- Audio serial data bus supports I2S, left/right-justified, DSP, and TDM modes
- Alternate serial PCM/I2S data bus for easy connection to Bluetooth™ module
- Digital microphone input support
- Extensive modular power control
- Power supplies
- Analog: 2.7V to 3.6V
- Digital Core: 1.65V to 1.95V
- Digital I/O: 1.1V to 3.6V
- Packages: 5mm × 5mm 80-VFBGA; 7mm × 7mm 48-QFN