ADAU1978WBCPZ

ADAU1978 is a four high performance, analogue-to-digital converter (ADC) with 2V rms capable ac-coupled inputs. The ADC use a multibit sigma-delta(Σ-Δ) architecture with continuous time front end for low EMI. An I2C/serial peripheral interface (SPI) control port is included that allows a microcontroller to adjust volume and many other parameters. The ADAU1978 uses only a single 3.3V supply. The part internally generates the required digital DVDD supply. The low power architecture reduces the power consumption. The on-chip PLL can derive the host clock from an external clock input or frame clock (sample rate clock). When fed with the frame clock, it eliminates the need for a separate high frequency host clock in the system. Typical application includes automotive audio systems and active noise cancellation system.

• On-chip phase- locked loop (PLL) for host clock
• Low electromagnetic interference (EMI) design, qualified for automotive application
• 109dB (typ) ADC dynamic range and total harmonic distortion + noise (THD + N) of -95dB (typical)
• Selectable digital high -pass filter and I2C/SPI controllable for flexibility
• 24bit stereo ADC with 8KHz to 192KHz sample rates
• Digital volume control with autoramp function
• Software controllable clickless mute and software power down
• Right justified, left justified, I2S and TDM modes
• 40 lead LFCSP package
• Operating temperature range from -40°C to 105°C

附註

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party