PCM1740E/2K集成电路（IC）的ADC/DAC-特殊用途规格书PDF中文资料

PCM1740E/2K属于集成电路（IC）的ADC/DAC-特殊用途。由德州仪器制造生产的PCM1740E/2KADC/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

COMPLETE DELTA-SIGMA STEREO DAC

VOLTAGE-CONTROLLED CRYSTAL OSCILLATOR:

27MHz ±150ppm Output with 0V to 3V Input

PROGRAMMABLE PLL

256fS or 384fS Audio System Clock Output

DYNAMIC PERFORMANCE:

Dynamic Range: 94dB

SNR: 94dB

THD+N: –89dB

SAMPLING FREQUENCIES:

16kHz, 22.05kHz, 24kHz

32kHz, 44.1kHz, 48kHz

64kHz, 88.2kHz, 96kHz

SERIAL AUDIO INTERFACE:

Standard or I2S™ Data Formats

16-, 20-, or 24-Bit Data

I2C-BUS™ INTERFACE FOR CONTROL

REGISTERS:

Slave Receiver Operation

7-Bit Addressing

Standard Transfer Rate (up to 100kbps)

PROGRAMMABLE CONTROLS:

Digital Attenuation (256 steps)

Soft Mute

Infinite Zero Detect Mute

De-Emphasis (32kHz, 44.1kHz, 48kHz)

DAC Output Mode

SINGLE +5V SUPPLY

SMALL SSOP-24 PACKAGE

APPLICATIONS

SET-TOP BOXES

DIGITAL BROADCAST RECEIVERS

DESCRIPTION

The PCM1740 is a complete stereo audio digital-toanalog

converter with on-chip PLL and VCXO. The

PCM1740 is designed specifically for set-top box applications

requiring high-quality audio playback, a precision

tuned 27MHz master clock source, and support for multiple

audio-sampling frequencies.

The stereo digital-to-analog converter (DAC) uses multibit,

delta-sigma architecture, which includes an 8x interpolation

filter, 3rd-order noise shaping, 5-level amplitude

quantization, and an analog low-pass filter. The PCM1740

includes a number of user-programmable functions, which

are accessed via a standard I2C-Bus interface.