PCM1723E集成电路（IC）的ADC/DAC-特殊用途规格书PDF中文资料

PCM1723E属于集成电路（IC）的ADC/DAC-特殊用途。由美国德州仪器公司制造生产的PCM1723EADC/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。

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 I2S™ DATA INPUT FORMATS

SELECTABLE FUNCTIONS:

Soft Mute

Digital Attenuator (256 Steps)

Digital De-emphasis

OUTPUT MODE: Left, Right, Mono, Mute

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 a

256fS or 384fS system clock from an external 27MHz

reference frequency. The DAC contains a 3rd-order

delta-sigma (ΔΣ) 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, DVDROM,

set-top boxes and MPEG sound cards.