PCM1681-Q1
Description
The PCM1681 and PCM1681-Q1 are CMOS monolithic integrated circuits which feature an eightchannel 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.
Key Features
- 1 Qualified for Automotive Applications: PCM1681Q1
- 24-Bit Resolution
- Analog Performance: - Dynamic Range: 105 dB Typical - SNR: 105 dB Typical - THD+N: 0.002% Typical - Full-Scale Output: 3.75 VPP 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 fS, 192 fS, 256 fS, 384 fS, 512 fS, 768 fS, or 1152 fS 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
