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1FEATURES

2345· 24-Bit Resolution

· Analog Performance:

– Dynamic Range: 105 dB Typical

– SNR: 105 dB Typical

– THD+N: 0.002% Typical

– Full-Scale Output: 3.9 V PP Typical

· 4x/8x Oversampling Interpolation Filter:

– Stop-Band Attenuation: –50 dB

– Passband Ripple: ±0.04 dB

· Sampling Frequency: 5 kHz to 200 kHz

· System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512

fS, 768 fS, or 1152 fS with Autodetect

· Zero Flags for Selectable Channel

Combinations

· Serial Port (SPI?/I2C?) for Mode Control

· User-Programmable Functions:

– Flexible Audio Data Formats

– Right-Justified, I2S?, and Left-Justified

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

– Digital Attenuation: Mode Selectable

– 0 dB to –63 dB, 0.5-dB/step

– 0 dB to –100 dB, 1-dB/step

– Soft Mute

– Digital De-Emphasis

– Digital Filter Roll-Off: Sharp or Slow

· Single Power-Supply Operation: 5-V Analog,

5-V Digital

· Package: SSOP-28 (150 mil)

· Pin-Compatible with PCM1780

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

DESCRIPTION

The PCM1680 is a CMOS, monolithic integrated

circuit which features eight 24-bit audio

digital-to-analog converters (DACs) and support

circuitry in a small SSOP-28. The DACs use TI's

enhanced multilevel delta-sigma (ΔΣ) architecture to achieve excellent signal-to-noise performance and a

high tolerance to clock jitter.

The PCM1680 accepts industry-standard audio data

formats with 16-bit to 24-bit audio data. Sampling

rates up to 200 kHz are supported. The PCM1680

provides a full set of user-programmable functions

through a serial control port, using an SPI or I2C

interface.