PCM1771中文资料具有耳机放大器的 98dB SNR 低功耗立体声 DAC（硬件控制）数据手册TI规格书

描述 Description

The PCM1770 and PCM1771 devices are CMOS, monolithic, integrated circuits which include stereo digital-to-analog converters, headphone circuitry, and support circuitry in small TSSOP-16 and VQFN-20 packages.The data converters use TI's enhanced multilevelarchitecture, which employs noise shaping and multilevel amplitude quantization to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1770 and PCM1771 devices accept several industry standard audio data formats with 16- to 24-bit data, left-justified, I2S, etc., providing easy interfacing to audio DSP and decoder devices. Sampling rates up to 50 kHz are supported. A full set of user-programmable functions is accessible through a 3-wire serial control port, which supports register write functions.

特性 Features

• Multilevel DAC Including Headphone Amplifier
• Dynamic Range: 98 dB Typ
• THD+N at -20 dB: 0.04% Typ
• 1.6-V to 3.6-V Single Power Supply
• System Clock: 128 fS, 192 fS, 256 fS, 384 fS
• Software Control (PCM1770):
• Left-, Right-Justified, and I2S
• Digital Attenuation: 0 dB to -62 dB, 1 dB/Step
• Zero Cross Attenuation
• Monaural Analog-In With Mixing
• Hardware Control (PCM1771):
• 44.1-kHz Digital De-Emphasis
• Pop-Noise-Free Circuit
• Packages: TSSOP-16 and VQFN-20
• Portable Audio Player
• PDA
• Other Applications Requiring Low-Voltage Operation