The TLV320AIC3107 is a low power stereo audio codec with stereo headphone amplifier, and
mono class-D speaker driver, as well as multiple inputs and outputs programmable in single-ended
fully differential configurations.
Extensive register-based power control is included, enabling stereo 48-kHz DAC playback
as low as 15 mW from a 3.3-V analog supply, making it ideal for portable battery-powered audio and
The high-power output drivers are capable of driving a variety of load configurations,
including up to three channels of single-ended 16-Ω headphones using ac-coupling capacitors, or
stereo 16-Ω headphones in a capacitorless output configuration. The mono class-D output is capable
of differentially driving an 8-Ω speaker.
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 or AGC that can
provide up to 59.5 dB analog gain for low-level microphone inputs. The TLV320AIC3107 provides an
extremely high range of programmability for both attack (8-1,408 ms) and for decay (0.05-22.4
seconds). This extended AGC range allows the AGC to be tuned for many types of applications.
For battery saving applications where neither analog nor digital signal processing are
required, the device can be put in a special analog signal passthru mode. This mode significantly
reduces power consumption, as most of the device is powered down during this pass through
The serial control bus supports 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
The TLV320AIC3107 operates from an analog supply of 2.7 V3.6 V, a digital core supply of
1.65 V1.95 V, a digital I/O supply of 1.1 V3.6 V, and a speaker amplifier supply of 2.7V5.5V.
The device is available in the 5 × 5-mm, 40-pin QFN package and in the future a 3.5 × 3-mm, 42-lead
The record path of the TLV320AIC3107 contains integrated microphone bias, digitally
controlled stereo microphone preamplifier, and automatic gain control (AGC), with mix/mux
capability among the multiple analog inputs. Programmable filters are available during record which
can remove audible noise that can occur during optical zooming in digital cameras. The playback
path includes mix/mux capability from the stereo DAC and selected inputs, through programmable
volume controls, to the various outputs.
The TLV320AIC3107 contains three high-power output drivers as well as two single-ended
line output drivers, and a differential class-D output driver.