Part Details for AD1843JS by Analog Devices Inc

The recommended power-up sequence is to apply VCC first, followed by VDD, and then the analog power supplies (AVCC and DVCC). This ensures that the internal voltage regulators are powered up correctly.

To optimize the AD1843JS for low power consumption, use the power-down modes (PD1 and PD2) to shut down unused sections of the device. Additionally, reduce the clock frequency, use a lower voltage supply, and minimize the use of external components.

The maximum clock frequency that can be used with the AD1843JS is 24.576 MHz. However, the actual clock frequency used may be limited by the specific application and the quality of the clock signal.

To configure the AD1843JS for 24-bit audio, set the DBF (data bus format) pin to logic high, and use the 24-bit data format. Additionally, ensure that the master clock frequency is set to 256 x fs, where fs is the sampling frequency.

The recommended layout and routing for the AD1843JS involves separating the analog and digital power supplies, using a solid ground plane, and minimizing the length of the clock signal traces. Additionally, use a low-impedance path for the analog signals and avoid crossing digital and analog signal traces.