Texas Instruments provides a recommended PCB layout in the DDC112UG4 datasheet, which includes guidelines for component placement, routing, and grounding. Additionally, it's recommended to use a 4-layer PCB with a solid ground plane, and to keep the analog and digital sections separate to minimize noise coupling.
The DDC112UG4 has an internal clock that can be configured using the CLKIN pin. The clock frequency can be set to 10 MHz, 20 MHz, or 40 MHz using the CLKDIV pin. Additionally, the timing of the conversion process can be controlled using the CONV pin. Refer to the datasheet for specific timing diagrams and configuration options.
The maximum input voltage range for the DDC112UG4 is ±10.24 V. To protect the device from overvoltage, it's recommended to use external voltage limiting resistors or a voltage limiter circuit. Additionally, the device has internal overvoltage protection (OVP) that can be enabled using the OVPEN pin.
The DDC112UG4 requires calibration to ensure optimal performance. The calibration process involves adjusting the internal offset and gain using the CAL pin. Texas Instruments provides a calibration procedure in the datasheet, which involves applying a known input voltage and adjusting the CAL pin to achieve the desired output code.
The power consumption of the DDC112UG4 depends on the operating mode and clock frequency. In normal operation, the device consumes around 150 mW. To minimize power consumption, it's recommended to use the power-down mode, reduce the clock frequency, and optimize the PCB layout to minimize power dissipation.
DDC112UG4 datasheet
by Texas Instruments
