PCM1740中文资料具有可编程 PLL 和 VCXO 的 94dB SNR 立体声 DAC数据手册TI规格书

描述 Description

The PCM1740 is a complete stereo audio digital-to-analog 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.

特性 Features

• COMPLETE DELTA-SIGMA STEREO DAC
• 27MHz ±150ppm Output with 0V to 3V Input
• PROGRAMMABLE PLL
• DYNAMIC PERFORMANCE:
• SNR: 94dB
• SAMPLING FREQUENCIES:
• 32kHz, 44.1kHz, 48kHz
• SERIAL AUDIO INTERFACE:
• 16-, 20-, or 24-Bit Data
• I2C-BUS™ INTERFACE FOR CONTROL REGISTERS:
• 7-Bit Addressing
• PROGRAMMABLE CONTROLS:
• Soft Mute
• De-Emphasis (32kHz, 44.1kHz, 48kHz)
• SINGLE +5V SUPPLY
• APPLICATIONS
• DIGITAL BROADCAST RECEIVERS

SoundPLUS is a trademark of Texas Instruments. I2C-Bus, I2C, and I2S are trademarks of NXP B.V. All other trademarks are the property of their respective owners.