Audio codec chip GX8311 replaces ES8311 for application in DVR/NVR

NVR (Network Video Recorder) and DVR (Digital Video Recorder) are two common video surveillance recording devices. NVR connects cameras and other devices through the network, and can directly use IP cameras for video recording and storage. DVR usually uses analog transmission method, which requires the use of analog cameras and the transmission of signals to DVR for recording through video cables. Both devices require the recording, storage, and transmission of video and audio.

Audio codec chips are commonly used in DVR/NVR devices, and the low-power codec GX8311 can bring excellent audio processing capabilities to DVR/NVR, significantly improving the overall performance of monitoring systems. GX8311 performance benchmarks ES8311.

GX8311 is a low-power mono audio codec that integrates multi bit audio ADC and DAC, enabling efficient and accurate audio signal conversion. It supports 24 bit resolution and sampling frequencies from 8 to 96kHz, enabling precise capture of sound details. GX8311 has fully differential output and supports programmable analog input in fully differential configuration. The recording path includes a fully differential input, a low-noise programmable gain amplifier, and automatic gain control. During the recording process, the built-in programmable filter is used to eliminate noise, allowing for clear recording of subtle sound changes in noisy monitoring environments.

Main performance introduction of GX8311:

1. System: High performance and low-power 24 bit delta sigma audio ADC and DAC, I2S/PCM master serial or slave serial data port, 256/384Fs, USB 12/24MHz and other non-standard audio system clocks, and adopts I2C interface.

2. ADC: 24 bits, sampling frequency from 8 to 96kHz, 95dB signal-to-noise ratio, -93dB THD+N, one pair of differential analog inputs, low-noise programmable gain amplifier, automatic level control (ALC) and noise gate, supporting analog and digital microphones.

3. DAC: 24 bits, sampling frequency from 8 to 96kHz, 95dB signal-to-noise ratio, -85dB THD+N, one pair of differential analog outputs, dynamic range compression, burst and click noise suppression

4. Low power consumption: 1.8V to 3.3V operating voltage, low standby current