PCM1789中文资料113dB SNR 立体声 DAC数据手册TI规格书

描述 Description

The PCM1789 is a high-performance, single-chip, 24-bit, stereo, audio digital-to-analog converter (DAC) with differential outputs. The two-channel, 24-bit DAC employs an enhanced multi-level, delta-sigma (ΔΣ) modulator, and supports 8 kHz to 192 kHz sampling rates and a 16-, 20-, 24-, 32-bit width digital audio input word on the audio interface. The audio interface of PCM1789 supports a 24-bit, DSP format in addition to I2S, left-justified, and right-justified formats.
The PCM1789 can be controlled through a three-wire, SPI-compatible or two-wire, I2C-compatible serial interface in software, which provides access to all functions including digital attenuation, soft mute, de-emphasis, and so forth. Also, hardware control mode provides two user-programmable functions through two control pins. The PCM1789 is available in a 24-pin TSSOP package.

特性 Features

• Enhanced Multi-Level Delta-Sigma DAC:
• THD+N: –94 dB
• Dynamic Range: 113 dB
• System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, 768 fS, 1152 fS
• Analog Low-Pass Filter Included
• Stop Band Attenuation: –75 dB
• Flexible Audio Interface:
• Data Length: 16, 20, 24, 32 Bits
• Connect Up To 4 Devices on One SPI Bus
• Digital Attenuation and Soft Mute
• Data Polarity Control
• Multi Functions via Hardware Control:
• Digital De-Emphasis Filter: 44.1kHz
• External Reset Pin
• Package: TSSOP-24
• Operating Temperature Range: –40°C to 85°C