描述 Description

The PCM1609A 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.

特性 Features

? 24-Bit Resolution
? Analog Performance:
? Dynamic Range: 105 dB, Typical
? SNR: 105 dB, Typical
? THD+N: 0.002%, Typical
? Full-Scale Output: 3.1 Vp-p, Typical

? 4×/8× Oversampling Interpolation Filter:
? Stop-Band Attenuation: -55 dB
? Pass-Band Ripple: ±0.03 dB

? Sampling Frequency: 5 kHz to 200 kHz
? Accepts 16-, 18-, 20-, and 24-Bit Audio Data
? Data Formats: Standard, I2S, and Left-Justified
? System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, or 768 fS
? User-Programmable Functions:
? Digital Attenuation: 0 dB to -63 dB, 0.5 dB/Step
? Soft Mute
? Zero Flags Can Be Used As General- Purpose Logic Output
? Digital De-Emphasis
? Digital Filter Rolloff: Sharp or Slow

? Dual-Supply Operation:
? 5-V Analog
? 3.3-V Digital

? 5-V Tolerant Digital Logic Inputs
? Package: LQFP-48
? APPLICATIONS
? Integrated A/V Receivers
? DVD Movie and Audio Players
? HDTV Receivers
? Car Audio Systems
? DVD Add-On Cards for High-End PCs
? Digital Audio Workstations
? Other Multichannel Audio Systems

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