PCM1681 Status: ACTIVE

Product Information

Features

• 24-Bit Resolution
• Analog Performance:
  • Dynamic Range: 105 dB Typical
  • SNR: 105 dB Typical
  • THD+N: 0.002% Typical
  • Full-Scale Output: 3.75 V_PP Typical
• 4×/8× Oversampling Interpolation Filter:
  • Stop-Band Attenuation: -57 dB
  • Pass-Band Ripple: ±0.015 dB
• Sampling Frequency: 5 kHz to 200 kHz
• System Clock: 128 f_S, 192 f_S, 256 f_S, 384 f_S, 512 f_S, 768 f_S, or 1152 f_S with Autodetect
• Zero Flags for Selectable Channel Combinations
• Flexible Mode Control:
  • SPI/I²C Dual Mode for Serial Port
  • Parallel Hardware Control with 4 Functions
• User-Programmable Functions (in SPI/I²C):
  • Flexible Audio Data Formats:
    • Right-Justified, I²S, Left-Justified, TDM, DSP
    • 16- 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
  • Oversampling Mode
• User-Programmable Functions (in H/W):
  • Flexible Audio Data Formats:
    • Right-Justified, I²S, Left-Justified, TDM
    • Soft Mute
    • Digital De-Emphasis
    • Oversampling Mode
• Power Supply Voltage: +5-V Analog, +3.3-V Digital
• Package: 28-Lead TSSOP PowerPAD
• Operation Temperature Range:
  • -40°C to +85°C for Consumer Grade
  • -40°C to +105°C for Automotive Audio Grade
• APPLICATIONS
  • Car Audio External Amplifiers
  • Car Audio AVN Applications
  • Integrated A/V Receivers
  • DVD Movie and Audio Players
  • HDTV Receivers
  • DVD Add-On Cards for High-End PCs
  • Digital Audio Workstations
  • Other Multichannel Audio Systems

PowerPAD Is a trademark of Texas Instruments
System Two, Audio Precision are trademarks of Audio Precision, Inc.
SPI is a trademark of Motorola.
I2C, I2S are trademarks of NXP Semiconductors.
All other trademarks are the property of their respective owners

Description

The PCM1681 and PCM1681-Q1 are CMOS monolithic integrated circuits which feature an eight-channel 24-bit audio digital-to-analog converter (DAC) and support circuitry in small 28-lead TSSOP PowerPAD packages. The DACs utilize Burr-Brown's enhanced multilevel delta-sigma (ΔΣ) architecture to achieve excellent signal-to-noise performance and a high tolerance to clock jitter.

The PCM1681 and PCM1681-Q1 accept TDM (time-division multiplexed) format in addition to industry-standard audio data formats with 16- to 24-bit audio data width. Sampling rates up to 200 kHz are supported. The PCM1681 and PCM1681-Q1 provide a sub-set of user-programmable functions through a parallel control port, in addition to a full set of user-programmable functions through a serial control port, SPI, or I²C. The PCM1681 supports -40°C to +85°C for consumer grade applications and the PCM1681-Q1 supports -40°C to +105°C for automotive audio grade systems.