CMX649E3 – TBC

Overview

The CML Micro CMX649E3 is a highly integrated audio CODEC designed for voice communication applications, featuring both an Analog-to-Digital Converter (ADC) and a Digital-to-Analog Converter (DAC) within a single package. Its primary function is to digitize analog audio signals for processing and then convert digital audio back to analog for output, supporting resolutions from 8 to 16 bits. A critical design consideration when implementing the CMX649E3 is managing the trade-off between power consumption and signal-to-noise ratio (SNR); while its low operating current of 3.5 mA is advantageous for battery-powered devices, achieving optimal audio fidelity necessitates careful PCB layout and component selection to mitigate internal and external noise coupling.

Key Features

• 16-bit resolution ADC and DAC
• Serial interface for digital audio data
• Single-channel ADC and single-channel DAC
• Wide operating supply voltage: 2.7 V to 5.5 V
• Low operating current: 3.5 mA typical
• Compact TSSOP-20 package (6.5 x 4.4 mm)

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Digital voice recording and playback in portable communication devices
• Audio signal conditioning for low-power wireless transceivers
• Speech processing in embedded systems with limited power budgets
• Audio interface for IoT devices requiring voice interaction