RHT1490A The RHT1490A is a high frequency, low noise TCXO that delivers world class telecommunications grade stability with low RMS phase jitter. This product’s frequency output enables lower system jitter, allowing communication system architects to optimise noise budget and performance. With a frequency stability performance of ±0.25 ppm, its CMOS output generates < 200 fs of RMS phase jitter (for a 98.304 MHz device, bandwidth 12 kHz – 20 MHz). The RHT1490A strikes the optimal balance between close‐in phase noise and the noise floor, making it suited to be the single reference clock used for both network and air interface requirements. Its ultra‐low noise floor performance helps to achieve very low system clock RMS jitter levels needed in high speed interfaces. Sync PLL Embedded Switches Designs requiring low noise ITU‐T G.813 and G.8262 Low noise C‐RAN radios, Microwave links and Small Cells  Radio head Clock Recovery (IEEE 1588/SyncE)  10/25/40G Ethernet Standard Specifications Parameter

High Frequency Ultra Stable TCXO Low Jitter and Phase Noise Model Outline, Recommended Pad Layout Test Circuit VDD SIDE VIEW RECOMMENDED PAD LAYOUT - TOP VIEW NOTE: Outline unit is mm. Active probe buffer system Frequency counter