DSD1794A中文资料132dB SNR 最高性能立体声音频 DAC（硬件控制）数据手册TI规格书

描述 Description

The DSD1794A is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI’s advanced-segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The DSD1794A provides balanced current outputs, allowing the user to optimize analog performance externally. The DSD1794A accepts the PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The DSD1794A also interfaces with external digital filter devices (DF1704, DF1706, PMD200). Sampling rates up to 200 kHz are supported. A full set of user-programmable functions is accessible through an I2C-compatible serial port.

特性 Features

• Supports Both DSD and PCM Formats
• 24-Bit Resolution
• Analog Performance:
• Dynamic Range:
• 132 dB (9 V RMS, Mono)
• 129 dB (4.5 V RMS, Stereo)
• 127 dB (2 V RMS, Stereo)
• THD+N: 0.0004%
• Differential Current Output: 7.8 mA p-p
• 8× Oversampling Digital Filter:
• Stop-Band Attenuation: –130 dB
• Pass-Band Ripple: ±0.00001 dB
• Sampling Frequency: 10 kHz to 200 kHz
• System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect
• Accepts 16-, 20-, and 24-Bit Audio Data
• PCM Data Formats: Standard, I2S, and Left-Justified
• Optional Interface to External Digital Filter or DSP Available
• I2C-Compatible Serial Port
• User-Programmable Mode Controls:
• Digital Attenuation: 0 dB to –120 dB, 0.5 dB/Step
• Digital De-Emphasis
• Digital Filter Rolloff: Sharp or Slow
• Soft Mute
• Dual-Supply Operation:
• 5-V Analog, 3.3-V Digital
• 5-V Tolerant Digital Inputs
• Small 28-Lead SSOP Package
• APPLICATIONS
• A/V Receivers
• SACD Player
• DVD Players
• HDTV Receivers
• Car Audio Systems
• Digital Multitrack Recorders
• Other Applications Requiring 24-Bit Audio

简介

DSD1794A属于集成电路（IC）的ADC/DAC-特殊用途。由TI制造生产的DSD1794AADC/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。