PCM1791A中文资料113dB SNR 立体声 DAC（软件控制）数据手册TI规格书

描述 Description

The PCM1791A 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 PCM1791A provides balanced voltage outputs, allowing the user to optimize analog performance externally. The PCM1791A accepts PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The PCM1791A also accepts interface to 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 SPI or I2C serial control port, which supports register write and readback functions. The PCM1791A also supports the time-division-multiplexed command and audio (TDMCA) data format.

特性 Features

• 24-Bit Resolution
• THD+N: 0.001%
• Differential Voltage Output: 3.2 Vp-p
• Pass-Band Ripple: ±0.002 dB
• System Clock: 128, 192, 256, 384, 512, or 768 fS With Autodetect
• PCM Data Formats: Standard, I2S, and Left-Justified
• Optional Interface to External Digital Filter or DSP Available
• User-Programmable Mode Controls:
• Digital De-Emphasis
• Soft Mute/PCM Format
• Zero Flag for Each Output/PCM and DSD Formats
• 5-V Tolerant Digital Inputs
• APPLICATIONS
• DVD Movie Players
• HDTV Receivers
• Digital Multitrack Recorders
• Other Applications Requiring 24-Bit Audio