مدار مجتمع (آی سی) آی‌سی واسط ارتباطی کدک‌

Product Attributes

Introduction

AD1937 is a high-performance single-chip codec featuring four ADCs with differential inputs and eight DACs with differential outputs, utilizing Analog Devices, Inc.'s patented multibit sigma-delta architecture. An I2C port is included, allowing a microcontroller to adjust volume and many other parameters. The AD1937 operates from 3.3V digital and analog supplies. The AD1937 is available in a 64-lead (differential output) LQFP package.

The AD1937 is designed with low EMI in mind. This is reflected in both the system and circuit design architecture. By using an on-board PLL to derive the master clock from the LR (frame) clock or an external crystal, the AD1937 eliminates the need for an external high-frequency master clock and can also be used with a suppressed bit clock. The DACs and ADCs are designed using Analog Devices' latest continuous-time architecture to further reduce EMI. By operating from a 3.3V supply, power consumption is minimized, further reducing radiated emissions.

Features

• PLL-generated clock or direct master clock
• Low EMI design
• 112 dB DAC/107 dB ADC dynamic range and SNR
• −96 dB THD+N
• Single 3.3 V supply
• 5 V logic input compatible
• 24-bit resolution, 8 kHz to 192 kHz sample rate
• Differential ADC inputs
• Differential DAC outputs
• Logarithmic volume control with auto-fade
• I2C-controllable for enhanced flexibility
• Software-controlled click-free muting
• Software shutdown
• Right-justified, left-justified, I2S, and TDM mode support
• Master/slave mode, up to 16-channel input/output
• Available in 64-pin LQFP package
• Suitable for automotive applications

Applications

• Automotive audio systems
• Home theater systems
• Set-top boxes
• Digital audio effects processors