RFM offers a full set of custom embedded wireless networking solutions like Zigbee wireless mesh sensor networks, RF modules, IC transceiver, IC transmitters and IC receivers. RFM, Inc. manufactures low power wireless and RF radio modules, wireless mesh nodes for distributed sensing on distributed sensor networks. Low Power radio, n../arrowband and short range devices, front end saw filters, active RFID, RFIC, coupled resonator filters, single silicon chips in the 70MHZ and 300-1000Mhz range.

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RF Components
Products Guide



Wireless Device
Selection Guide

SC3044B

13.5x9.4mm case
251 MHz Clock - Diff Sine Wave

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to inquire about samples or to discuss your custom needs.


• Quartz SAW Frequency Stability
• Fundamental Fixed Frequency
• Very Low Jitter and Power Consumption
• Rugged, Miniature, Surface-Mount Case
• Low-Voltage Power Supply (3.3 VDC)
Click here if you need additional technical information,
to inquire about samples or to discuss your custom needs.

download data sheet Rev Date 03/27/08

download RoHS Statement

download Package Specs

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This digital clock is designed for use in high-speed communications timing systems. Fundamental-mode oscillation is made possible by surface-acoustic-wave (SAW) technology. The design results in low jitter, compact size, and low power consumption. Differential outputs provide a sine wave that is capable of driving 50 Ohm loads.

   
Electrical Characteristics
Characteristic Symbol Minimum Typical Maximum Units
Output Frequency Absolute Frequency fO 250.910 251.090 MHz
Tolerance from 624.0 MHz ?fO ±300 ppm
Q and Q Output Voltage into 50Ohm (VSWR ? 1.2) VO 0.60 1.1 VP-P
Operating Load VSWR 2:1 VP-P
Symmetry 49 51 %
Harmonic Spurious -25 -20 dBc
Nonharmonic Spurious -60 dBc
Q and Q Period Jitter No Noise on VCC 15 30 psP-P
200 mVP-P from 1 MHz to ½ fO on 35 psP-P
Output (Disabled) Amplitude into 50 Ohm 75 mVP-P
Output DC Resistance (between Q & Q) 50 KOhm
ENABLE (Terminal 14) Input HIGH Voltage VIH VCC-0.1 VCC VCC+0.1 V
Input LOW Voltage VIL 0 0.20 V
Input HIGH Current IIH 3 5 mA
Input LOW Current IIL -1 mA
Propagation Delay tPD 1 ms
DC Power Supply Operating Voltage VCC +3.13 +3.30 +3.47 VDC
Operating Current ICC 20 40 mA
Operating Ambient Temperature TA 0 +70 °C

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