The maximum clock frequency that can be used with the LTC1290 is 1.5MHz. However, it's recommended to use a clock frequency of 1MHz or less to ensure reliable operation.
To ensure accurate conversions with the LTC1290, make sure to follow proper layout and grounding techniques, use a low-noise power supply, and minimize digital noise on the analog input pins. Also, ensure that the clock frequency is stable and within the recommended range.
Yes, the LTC1290 can be used with a single-ended analog input. However, the input signal should be referenced to the analog ground (AGND) pin, and the analog input range should be limited to 0V to VREF to avoid saturation.
The LTC1290 has internal overvoltage protection on the analog input pins, which can withstand up to 15V. However, it's recommended to use external protection circuitry, such as clamping diodes or resistors, to prevent damage from excessive voltage levels.
The recommended power-up sequence for the LTC1290 is to apply the analog power supply (VCC) first, followed by the digital power supply (VDD). This ensures that the analog circuitry is powered up before the digital circuitry.
LTC1290CCSW datasheet
by Linear Technology
