DSC2122

DSC2122 DSC2222 Low-Jitter I2C/SPI Programmable Dual LVPECL Oscillator Datasheet General Description The DSC2122 and DSC2222 series of programmable, high-performance dual LVPECL oscillators utilizes a proven silicon MEMS technology to provide excellent jitter and stability while incorporating high output frequency flexibility. DSC2122 and DSC2222 allow the user to independently modify the frequency of each output using I2C or SPI interface, respectively. User can also select from two pre-programmed default output frequencies using the control pin. DSC2122 and DSC2222 are packaged in 14pin 3.2x2.5 mm QFN packages and available in temperature grades from Ext. Commercial to Industrial. Block Diagram Features Low RMS Phase Jitter: <1 ps (typ) High Stability: ±50 ppm Wide Temperature Range o Industrial: -40° to 85° C o Ext. commercial: -20° to 70° C High Supply Noise Rejection: -50 dBc Two Independent LVPECL Outputs I2C/SPI Programmable Frequencies Short Lead Times: 2 Weeks Wide Frequency Range: o LVPECL Output: 2.3 to 460 MHz Miniature Footprint of 3.2x2.5mm Excellent Shock & Vibration Immunity o Qualified to MIL-STD-883 High Reliability o 20x better MTF than quartz oscillators Supply Range of 2.25 to 3.6 V Lead Free & RoHS Compliant Pin # 3 5 6 7 DSC2122 (I2C) NC SDA SCL CS_bar DSC2222 (SPI) SCLK MOSI MISO SS Applications Storage Area Networks o SATA, SAS, Fibre Channel Passive Optical Networks o EPON, 10G-EPON, GPON, 10G-PON Ethernet o 1G, 10GBASE-T/KR/LR/SR, and FCoE H...