The recommended layout and placement for the LTC2480CDD involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the analog signal sources to minimize noise. Additionally, it's recommended to use a 4-layer PCB with a dedicated analog power plane and a dedicated digital power plane.
To optimize the performance of the LTC2480CDD in noisy environments, use a low-pass filter on the input signals, use a shielded cable for the analog input signals, and consider using a common-mode filter on the input signals. Additionally, ensure that the device is properly decoupled and that the power supply is clean and well-regulated.
The maximum sampling rate that can be achieved with the LTC2480CDD is 1.5Msps (megasamples per second) for a single channel, and 750ksps for multiple channels. However, the actual sampling rate may be limited by the system's clock frequency, the input signal bandwidth, and the device's settling time.
The LTC2480CDD does not require calibration, as it has an internal calibration circuit that sets the gain and offset of the device. However, it's recommended to perform a system-level calibration to ensure that the device is operating within the desired specifications. This can be done by applying a known input signal and adjusting the system's gain and offset accordingly.
The power consumption of the LTC2480CDD is typically around 15mW at 3V supply voltage. To reduce the power consumption, consider using a lower supply voltage, reducing the clock frequency, or using the device's power-down mode when not in use. Additionally, consider using a low-power microcontroller or processor to interface with the device.
LTC2480CDD#PBF datasheet
by Linear Technology
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