Low Power Audio CODEC/ADC/DAC

Overview

The Audio CODEC IP is a low power, high resolution, stereo audio solution which leverages Sigma-Delta noise-shaping technology. The ADC, DAC, PGA, and power amplifier are integrated to provide a complete solution. Innosilicon Audio CODEC IP offers reliable solutions for audio signal conversion in high end consumer, automotive, multimedia, and other digital audio systems.

The Audio CODEC IP consists of ADC channels, DAC channels, and bias circuit. The ADC channel is used to convert analog audio signals to digital signals. Each ADC channel contains input PGA, ALC, Sigma-Delta modulator, and digital filter. The DAC channel is used to convert digital audio signals to analog signals. Each DAC channel contains Sigma-Delta modulator, DCT, and power amplifier. The bias circuit generates voltage and current reference.

Key Features

24 bits DAC with 93dB SNR
Supports 1~8 DAC channels
Supports 16Ω to 32Ω headphone output or line output
Low power: 5mA for stereo playback
24 bits ADC with 92dB SNR
Supports 1~8 ADC channels
Supports differential and single-ended microphone or line input
Low power: 5mA for stereo recording
Supports sampling rate of 8kHz/12kHz/16kHz/24kHz/32kHz/44.1kHz/48kHz/96kHz
Supports Automatic Level Control (ALC) for smooth audio recording
Supports Mono, Stereo, 5.1 and 7.1 HiFi channel performance
Supports programmable input and output analog gains
Built-in digital interpolation and decimation filter
The area correlates strongly with process node and channel count. please refer to the detailed datasheet

Benefits

Low power consumption
Fully customizable
Small area
Simple integration process
Available options include:
- Test chips and test boards
- FPGA integration support
- Chip level integration

Block Diagram

Deliverables

Databook and detailed physical implementation guides
Complete set of timing models
Library Exchange Format (LEF)
Encrypted Verilog Models
Layout vs. Schematic (LVS) report
GDSII database for foundry merge

Technical Specifications

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