Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the analog and digital signals separate. The analog input traces should be short and direct, and the digital output traces should be routed away from the analog inputs. Additionally, decoupling capacitors should be placed close to the device to filter out noise.
The ADS7828EB/2K5G4 has a built-in POR circuit that resets the device when the power supply voltage rises above 1.5V. To ensure proper operation, the power supply voltage should be ramped up slowly (less than 10ms) and the digital inputs should be held low during power-up. The recommended power-up sequence is to apply the power supply voltage, then the analog input voltage, and finally the digital input signals.
The maximum sampling rate of the ADS7828EB/2K5G4 is 1.5Msps, but it can be adjusted by changing the clock frequency. The power consumption increases with the sampling rate, and the device typically consumes around 15mW at 1.5Msps. However, the power consumption can be reduced by using the device's power-down mode or by reducing the sampling rate.
The ADS7828EB/2K5G4 has an internal calibration circuit that can be used to calibrate the device. The device can be calibrated using an external calibration voltage or by using the internal calibration voltage. The calibration options available include offset calibration, gain calibration, and system calibration. The calibration process can be performed using the device's calibration registers and the recommended calibration procedure is provided in the datasheet.
The ADS7828EB/2K5G4 is a high-speed analog-to-digital converter and is susceptible to electromagnetic interference (EMI) and radio-frequency interference (RFI). To ensure electromagnetic compatibility, the device should be placed in a shielded environment, and the PCB should be designed to minimize radiation. Additionally, the device's digital outputs should be filtered and the analog inputs should be shielded. The recommended EMI and RFI mitigation techniques are provided in the datasheet.
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ADS7828EB/2K5G4 Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
