描述 Description

The PCM1602A is a CMOS, monolithic integrated circuit that features six 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 PCM1602A accepts industry-standard audio data formats with 16- to 24-bit audio data. Sampling rates up to 200 kHz (channels 1 and 2) or 100 kHz (channels 3, 4, 5, and 6) 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 VPP, Typical

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

? Sampling Frequency:
? 5 kHz to 200 kHz (Channels 1 and 2)
? 5 kHz to 100 kHz (Channels 3, 4, 5, and 6)

? 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