Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the analog and digital grounds separate. Additionally, use short and direct traces for the analog inputs and outputs, and avoid running digital signals near the analog signals.
To configure the TLV1548QDBREP for low-power mode, set the PDWN pin low. This reduces the power consumption, but it also reduces the conversion speed and increases the settling time. The trade-offs include slower conversion rates, increased settling time, and reduced accuracy.
The recommended input impedance for the TLV1548QDBREP is 1 kΩ or less. A higher input impedance can lead to reduced accuracy, increased noise, and slower settling times. It's essential to match the input impedance to the source impedance to ensure optimal performance.
The TLV1548QDBREP outputs data in a 16-bit, two's complement format. Engineers can choose between right-justified or left-justified formats. The right-justified format is more common, but the left-justified format can be useful in certain applications. The choice of format affects the data processing and interpretation in the subsequent stages.
The TLV1548QDBREP has a maximum operating temperature range of -40°C to 125°C. Engineers should ensure proper thermal management, such as heat sinking and airflow, to prevent overheating. Elevated temperatures can lead to reduced accuracy, increased noise, and decreased reliability.
TLV1548QDBREP datasheet
by Texas Instruments
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