MAX1248BCPE+ datasheet by Maxim Integrated Products

MAX1248BCPE+ Frequently Asked Questions (FAQs)

• What is the recommended layout and routing for the MAX1248BCPE+ to minimize noise and ensure optimal performance?
  The MAX1248BCPE+ requires careful layout and routing to minimize noise and ensure optimal performance. It is recommended to follow the layout guidelines provided in the application note AN1890, which includes tips on component placement, routing, and grounding. Additionally, it is recommended to use a solid ground plane, keep analog and digital signals separate, and use shielding to minimize electromagnetic interference (EMI).
• How do I ensure the MAX1248BCPE+ is properly powered and what are the power sequencing requirements?
  The MAX1248BCPE+ requires a single 2.7V to 3.6V power supply. It is recommended to use a low-dropout linear regulator (LDO) or a switching regulator with a low noise output to power the device. The power sequencing requirements are critical, and it is recommended to power up the device in the following order: VCC, VREF, and then the analog inputs. The power-down sequence should be reversed.
• What is the maximum sampling rate of the MAX1248BCPE+, and how does it affect the power consumption?
  The maximum sampling rate of the MAX1248BCPE+ is 1Msps. The power consumption of the device increases with the sampling rate. At 1Msps, the typical power consumption is around 15mW. However, the power consumption can be reduced by reducing the sampling rate or by using the device's power-down mode.
• How do I calibrate the MAX1248BCPE+, and what are the calibration requirements?
  The MAX1248BCPE+ requires a two-point calibration to ensure accurate conversions. The calibration process involves applying a known input voltage to the device and adjusting the internal offset and gain registers to achieve the desired accuracy. The calibration requirements are dependent on the specific application and the desired level of accuracy. It is recommended to follow the calibration procedure outlined in the datasheet and to use a high-accuracy voltage reference for the calibration process.
• What is the effect of temperature on the MAX1248BCPE+, and how does it affect the accuracy and power consumption?
  The MAX1248BCPE+ is specified to operate over a temperature range of -40°C to +85°C. The device's accuracy and power consumption are affected by temperature. The typical temperature coefficient for the device is ±1ppm/°C, which means that the device's accuracy will degrade by ±1ppm for every degree Celsius change in temperature. The power consumption of the device also increases with temperature, with a typical temperature coefficient of ±0.1mW/°C.