ADAU1461 Datasheet | Analog Devices

Sigma DSP Stereo, Low Power, 96 k Hz, 24-Bit Audio Codec with Integrated PLL ADAU1461 Features Sigma DSP 28-/56-bit, 50 MIPS digital audio processor Fully programmable with Sigma Studio graphical tool 24-bit stereo audio ADC and DAC: >98 d B SNR Sampling rates from 8 k Hz to 96 k Hz Low power: 17 m W record, 18 m W playback, 48 k Hz 6 analog input pins, configurable for single-ended or differential inputs Flexible analog input/output mixers Stereo digital microphone input Analog outputs: 2 differential stereo, 2 single-ended stereo, 1 mono headphone output driver PLL supporting input clocks from 8 MHz to 27 MHz Analog automatic level control (ALC) Microphone bias reference voltage Analog and digital I/O: 3.3 V I2C and SPI control interfaces Digital audio serial data I/O: stereo and time-division multiplexing (TDM) modes Software-controllable clickless mute GPIO pins for digital controls and outputs 32-lead, 5 mm × 5 mm LFCSP - 40°C to +105°C operating temperature range Qualified for automotive applications GENERAL DESCRIPTION The ADAU1461 is a low power, stereo audio codec with integrated digital audio processing that supports stereo 48 k Hz record and playback at 35 m W from a 3.3 V analog supply. The stereo audio ADCs and DACs support sample rates from 8 k Hz to 96 k Hz as well as a digital volume control. The Sigma DSP® core Features 28-bit processing (56-bit double precision). The processor allows system designers to pensate for the real-world limitations of microphones, speakers, amplifiers, and listening environments, resulting in a dramatic improvement in the perceived audio quality through equalization, multiband pression, limiting, and third-party branded algorithms. The Sigma Studio™ graphical development tool is used to program the ADAU1461. This software includes audio processing blocks such as filters, dynamics processors, mixers, and low level DSP functions for fast development of custom signal flows. The record path includes an integrated microphone bias...