PCM1723中文资料具有可编程 PLL 的 96dB SNR 立体声 DAC数据手册TI规格书

描述 Description

The PCM1723 is a complete low cost stereo audio digital-to-analog converter (DAC) with a phase-locked loop (PLL) circuit included. The PLL derives either 256fS or 384fS system clock from an external 27MHz reference frequency. The DAC contains a 3rd-order Delta-Sigma () modulator, a digital interpolation filter, and an analog output amplifier. The PCM1723 can accept 16-, 20-, or 24-bit input data in either normal or I2S formats.
The digital filter performs an 8X interpolation function and includes selectable features such as soft mute, digital attenuation and digital de-emphasis. The PLL can be programmed for sampling at standard digital audio frequencies as well as one-half and double sampling frequencies.
The PCM1723 is ideal for applications which combine compressed audio and video data such as DVD, DVD-ROM, set-top boxes and MPEG sound cards.

特性 Features

• ACCEPTS 16-, 20-, OR 24-BIT INPUT DATA
• COMPLETE STEREO DAC: Includes Digital Filter and Output Amp
• DYNAMIC RANGE: 94dB
• MULTIPLE SAMPLING FREQUENCIES:
• 16kHz, 22.05kHz, 24kHz
• 32kHz, 44.1kHz, 48kHz
• 64kHz, 88.2kHz, 96kHz
• PROGRAMMABLE PLL CIRCUIT:
• 256fS/384fS from 27MHz Master Clock
• NORMAL OR I2™ DATA INPUT FORMATS
• SELECTABLE FUNCTIONS:
• Soft Mute
• Digital Attenuator (256 Steps)
• Digital De-emphasis
• OUTPUT MODE: Left, Right, Mono, MuteSoundPLUS is a trademark of Texas Instruments. I2S is a trademark of NXP Semiconductors. All other trademarks are the property of their respective owners.

简介

PCM1723属于集成电路（IC）的ADC/DAC-特殊用途。由TI制造生产的PCM1723ADC/DAC - 特殊用途该产品族中的产品可用于模拟和数字表示的信息转换，适用于特定用例，或集成了通用数据转换器中不常见的其他功能。例如针对超声或汽车雷达应用集成了低噪声放大器和可变增益级的器件、注重音频和视频的产品、在段码式显示器上集成显示测量值功能的器件、集成输入输出电气隔离的器件等。