WM8781集成电路（IC）的ADC/DAC-特殊用途规格书PDF中文资料

WM8781属于集成电路（IC）的ADC/DAC-特殊用途。由凌云逻辑制造生产的WM8781ADC/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。

DESCRIPTION

The WM8781 is a high performance, low cost stereo audio ADC designed for recordable media applications.

The device offers stereo line level inputs along with two control input pins (FORMAT, IWL) to allow operation of the audio interface in three industry standard modes. An internal op-amp is integrated on the front end of the chip to accommodate analogue input signals greater than 1Vrms. The device also has a high pass filter to remove residual DC offsets.

FEATURES

• SNR 102dB (‘A’ weighted @ 48kHz)

• THD -90dB (at –1dB)

• Sampling Frequency: 8 – 192kHz

• Master or Slave Clocking Mode

• System Clock (MCLK): 128fs, 192fs, 256fs, 384fs, 512fs, 768fs

• Audio Data Interface Modes

- 16-24 bit I2S, 16-24 bit Left, 16-24 bit Right Justified

• Supply Voltages

- Analogue 2.7 to 5.5V

- Digital core: 2.7V to 3.6V

• 20-lead SSOP package

APPLICATIONS

• Recordable DVD Players

• Personal Video Recorders

• STB

• Studio Audio Processing Equipment