The recommended power-up sequence is to apply VCC first, followed by VREF, and then the digital signals. This ensures proper internal biasing and prevents damage to the device.
The analog output filter should be optimized for a cutoff frequency of around 100 kHz to 200 kHz to remove high-frequency noise and ensure a smooth output signal. A simple RC filter or a more complex active filter can be used, depending on the specific application requirements.
The maximum allowed input voltage for the analog input pins is VREF + 0.5V, which is typically around 5.5V for a 5V VREF. Exceeding this voltage can cause damage to the device.
Clock jitter and skew can be minimized by using a high-quality clock source, such as a crystal oscillator, and ensuring that the clock signal is properly terminated and routed. Additionally, the PCM1702U-KE6 has a built-in clock jitter attenuator that can help reduce the effects of clock jitter.
The recommended layout and routing for the PCM1702U-KE6 involves keeping the analog and digital signals separate, using a solid ground plane, and minimizing the length of the analog input traces. Additionally, the VREF and VCC pins should be decoupled with high-quality capacitors to reduce noise and ensure stable operation.
PCM1702U-KE6 datasheet
by Texas Instruments
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