SNAS783C June 2020 – February 2021 LMX2820
PRODUCTION DATA
The OSCIN pins are used as a frequency reference input to the device. The input is high impedance and requires AC-coupling caps at the pin. A CMOS clock or XO can drive the single-ended OSCIN pins. Differential clock input is also supported, making it easier to interface with high-performance system clock devices such as TI’s LMK series clock devices. As the OSCIN signal is used as a clock for the VCO calibration, a proper reference signal must be applied at the OSCIN pin at the time of the VCO needs to calibrate.