RHT1490J RAKON | Alldatasheet

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HIGH FREQUENCY ULTRA STABLE TCXO | STRATUM 3 / IEEE 1588 / SYNCE Issue: B, 14 August 2023 Specifications are subject to change without notice Copyright © 2017 to 2023 Rakon Limited. All rights reserved Page 1 of 2 Contact Us RHT1490J The RHT1490J is a high frequency Stratum 3 TCXO specifically designed to meet telecommunications grade stabilities at high frequencies with low phase jitter. This product’s frequency output enables lower system jitter, allowing communication system architects to optimise noise budget and performance. Having the optimal balance between close- in phase noise and the noise floor, makes it suitable 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 need in high speed interfaces (40G/100G). Comfortably achieving Stratum 3 grade stability, its CMOS output generates < 200 fs of RMS phase jitter (12 kHz – 20 MHz), in a 14 x 9 mm also works with both discrete and integrated IEEE 1588 solutions – providing excellent medium term stability for low loop bandwidth applications. Standard Specifications Parameter Min. Typ. Max. Unit Test Condition / Description Nominal frequency 50 – 200 MHz Standard frequencies: 98.304, 100, 125, and

156.25 MHz

Frequency calibration ±1.0 ppm Initial accuracy at 25°C ±2°C Reflow shift ±1.0 ppm Pre to post reflow ∆F (measured ≥ 60 minutes after reflow) Operating temperature range -40 85 °C Frequency stability over temperature ± 0.28 ppm The default reference for holdover stability, variable temperature is (FMAX + FMIN)/2 Free-run accuracy ±4.6 ppm Including frequency calibration, temperature, supply voltage & load changes and 20 years ageing Supply voltage stability ±0.1 ppm ±5% variation, reference to frequency at 3.3 V Load sensitivity ±0.1 ppm ±5 pF variation, reference to frequency at 5 pF Long term stability (ageing at 40°C) ±10 ±2.5 ppb ppm Per day, after 10 days of continuous operation 20 years Acceleration sensitivity 2 ppb/g Gamma vector, 3 axes, 30 – 1500 Hz Start-up time 1 ms 90% amplitude Supply voltage (VDD ) 3.3 2.5 V ±5%, Fn = 50 – 160 MHz ±5%, Fn = 160 – 200 MHz Supply current 14 mA 5 pF//1 kΩ, 100 MHz Oscillator output - CMOS Output voltage level low (VOL) Output voltage level high (VOH) Rise time Fall time Duty cycle Load 80% 1.2 1.2 20% 1.5 1.5 V DD VDD ns ns pF With capacitive load of 5pF, 100 MHz With capacitive load of 5pF, 100 MHz Measured 20% to 80% V DD , 5 pF load, 100 MHz Measured 80% to 20% VDD , 5 pF load, 100 MHz Measured at 50% VDD trigger level, 100 MHz Features Applications 14.4 x 9.2 x 4.7 mm  Telecommunications grade Stratum 3 stability  Low jitter < 200 fs (12 kHz to 20 MHz)  High frequency options from 50 – 200 MHz  Inherent airflow resistance  Stratum 3 equipment  Carrier Ethernet/Microwave  Telecom PLLs  ITU-T G.813, G.8262, G.82673.2 and G8273.3  Radio Head Clock Recovery (IEEE 1588/SyncE)  10/25/40/100G Ethernet

HIGH FREQUENCY ULTRA STABLE TCXO | STRATUM 3 / IEEE 1588 / SYNCE Issue: B, 14 August 2023 Specifications are subject to change without notice Copyright © 2017 to 2023 Rakon Limited. All rights reserved Page 2 of 2 Contact Us SSB Phase Noise – 98.304 MHz RHT1490 TCXO (Typical value at 25°C, CMOS output) Model Outline, Recommended Pad Layout Test Circuit RMS Jitter = 165 fs (typ. 12 kHz ~ 20 MHz) PIN CONNECTIONS

1 GND

2 Do not connect

3 GND

4 Output

5 Do not connect

6 Supply Voltage (VDD)

NOTE: Outline unit is mm.