PCM1609A

105dB SNR 8 通道音频 DAC

The is a CMOS, monolithic integrated circuit that features eight 24-bit audio digital-to-analog converters DACs and support circuitry in a small LQFP-48 package. The DACs use Texas Instruments" enhanced multilevel, delta-sigma architecture that employs fourth-order noise shaping and 8-level amplitude quantization to achieve excellent signal-to-noise performance and a high tolerance to clock jitter.

The PCM1609A accepts industry-standard audio data formats with 16- to 24-bit audio data. Sampling rates up to 200 kHz are supported. A full set of user-programmable functions is accessible through a 4-wire serial control port that supports register write and read functions.

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24-Bit Resolution

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Analog Performance:

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Dynamic Range: 105 dB, Typical

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SNR: 105 dB, Typical

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THD+N: 0.002%, Typical

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Full-Scale Output: 3.1 Vp-p, Typical

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4×/8× Oversampling InterpolationFilter:

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Stop-Band Attenuation: -55 dB

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Pass-Band Ripple: ±0.03 dB

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Sampling Frequency: 5 kHz to 200 kHz

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Accepts 16-, 18-, 20-, and 24-Bit Audio Data

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Data Formats: Standard, I2S, and Left-Justified

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System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, or 768 fS

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User-Programmable Functions:

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Digital Attenuation: 0 dB to -63 dB, 0.5 dB/Step

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Soft Mute

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Zero Flags Can Be Used As General- Purpose Logic Output

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Digital De-Emphasis

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Digital Filter Rolloff: Sharp or Slow

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Dual-Supply Operation:

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5-V Analog

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3.3-V Digital

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5-V Tolerant Digital Logic Inputs

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Package: LQFP-48

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APPLICA ONS

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Integrated A/V Receivers

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DVD Movie and Audio Players

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HDTV Receivers

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Car Audio Systems

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DVD Add-On Cards for High-End PCs

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Digital Audio Workstations

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Other Multichannel Audio Systems

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