TI TLV320AIC3106IRGZT

The TLV320AIC3106 is a low-power stereo audio codec featuring a stereo headphone amplifier and multiple inputs and outputs programmable in single-ended or fully differential configurations. It includes comprehensive register-based power control, enabling stereo 48kHz DAC playback at power consumption as low as 15mW from a 3.3V analog supply, making it ideal for portable battery-powered audio and telephony applications.

The TLV320AIC3106 record path incorporates an integrated microphone bias, digitally controlled stereo microphone preamplifier, and AGC, with mixer/multiplexer functionality across multiple analog inputs. Programmable filters are available during recording to attenuate audible noise that may be generated during digital camera optical zoom operations.

The playback path includes mixer/multiplexer functionality routing signals from the stereo DAC and selected inputs through programmable volume control to various outputs.

The TLV320AIC3106 contains four high-power output drivers and three fully differential output drivers. The high-power output drivers support 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 capless output configuration.

The stereo audio DAC supports sample rates from 8kHz to 96kHz, with programmable digital filtering in the DAC path to support 3D, bass, treble, mid-range effects, speaker equalization, and de-emphasis at 32kHz, 44.1kHz, and 48kHz sample rates. The stereo audio ADC supports sample rates from 8kHz to 96kHz, preceded by a programmable gain amplifier or AGC providing up to 59.5dB of analog gain for low-level microphone inputs. The TLV320AIC3106 offers an exceptionally wide attack (8ms–1,408ms) and decay (0.05s–22.4s) programming range. The extended AGC range enables fine-tuning for a wide variety of application types.

For power-saving applications that do not require analog or digital signal processing, the device can be placed in a special analog signal bypass mode. This mode significantly reduces power consumption, as most of the device is powered down during bypass operation.

The serial control bus supports SPI or I2C protocols, while the serial audio data bus is programmable for I2S, left-justified, DSP, or TDM modes. A highly programmable PLL is included for flexible clock generation, with support for all standard audio rates from a wide range of available MCLK frequencies spanning 512kHz to 50MHz, with particular emphasis on the most commonly used system clock frequencies of 12MHz, 13MHz, 16MHz, 19.2MHz, and 19.68MHz.

The TLV320AIC3106 operates from an analog supply of 2.7V–3.6V, a digital core supply of 1.65V–1.95V, and a digital I/O supply of 1.1V–3.6V.

• Stereo Audio DAC:
  • 102dBA SNR
  • 16, 20, 24, 32-bit data support at 8kHz to 96kHz sample rates
  • 3D, bass, treble, EQ, and de-emphasis effects
  • Flexible power-saving modes and performance
• Stereo Audio ADC:
  • 92dBA SNR
  • 8kHz to 96kHz sample rate support
  • Digital signal processing and noise filtering during recording
• Ten audio input pins:
  • Programmable in single-ended or fully differential configuration
  • Three-state capability for floating input configuration
• Seven audio output drivers:
  • Stereo fully differential or single-ended headphone driver
  • Fully differential stereo line output
  • Fully differential mono output
• Low power: 3.3V analog supply voltage, 15mW stereo, 48kHz playback
• Ultra-low power mode with passive analog bypass
• Programmable input/output analog gain
• Automatic Gain Control (AGC) for recording
• Programmable microphone bias level
• Programmable PLL for flexible clock generation
• SPI or I2C selectable control bus
• Audio serial data bus supports I2S, left-justified and right-justified, DSP, and TDM modes
• Secondary serial PCM/I2S data bus for easy connection to Bluetooth modules
• Concurrent support for digital and analog microphones
• Extensive modular power supply control:
  • Analog: 2.7V to 3.6V
  • Digital core: 1.65V–1.95V
  • Digital I/O: 1.1V to 3.6V