DSC2010FI2-A0001

DSC2010 Low-Jitter Configurable CMOS Oscillator General Description Features The DSC2010 series of high performance Low RMS Phase Jitter: <1 ps (typ) CMOS oscillators utilize a proven silicon High Stability: 10, 25, 50 ppm MEMS technology to provide excellent jitter and stability while incorporating additional Wide Temperature Range device functionality. The DSC2010 allows o Automotive: -55 to 125 C the user to easily modify the frequency and o Ext. Industrial: -40 to 105 C drive strength of the oscillator using pins. o Industrial: -40 to 85 C The DSC2010 has provision for up to four o Ext. commercial: -20 to 70 C user-defined pre-programmed, pin-selectable output frequencies, and eight pin-selectable High Supply Noise Rejection: -50 dBc output drive levels to help reduce EMI. Pin-Selectable Configurations o 3-bit Output Drive Strength DSC2010 is packaged in a 14-pin 3.2x2.5 o 2-bit Output Frequency Combinations mm QFN package and available in temperature grades from Ext. Commercial to Short Lead Times: 2 Weeks Automotive. Wide Freq. Range: o CMOS Output: 2.3 to 170 MHz Miniature Footprint of 3.2x2.5mm Excellent Shock & Vibration Immunity o Qualified to MIL-STD-883 High Reliability Block Diagram o 20x better MTF than quartz oscillators Supply Range of 2.25 to 3.6 V Lead Free & RoHS Compliant Applications Consumer Electronics 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 HD/SD/SDI Video & Surveillance PCI Express ______________________________________________________________________________________________________________________________________________ DSC2010 Page 1 MK-Q-B-P-D-12042601-2 Low-Jitter Configurable CMOS Oscillator DSC2010 Pin Description Pin No. Pin Name Pin Type Description 1 Enable I Enables outputs when high and disables when low 2 NC NA Leave unconnected or grounded 3 NC NA Leave unconnected or grounded 4 GND Power Ground 5 FS0 I Least significant bit for frequency selection 6 FS1 I Most significant bit for frequency selection 7 NC NA Leave unconnected or grounded 8 Output O CMOS output 9 OS0 I Least significant bit for output drive strength selection 10 OS1 I Middle bit for output drive strength selection 11 NC NA Leave unconnected or grounded 12 VDD2 Power Power Supply 13 VDD Power Power Supply 14 OS2 I Most significant bit for output drive strength selection Operational Description The DSC2010 is a CMOS oscillator consisting The DSC2010 has programmable output drive of a MEMS resonator and a support PLL IC. strength. Using three control pins (OS0-OS2) The CMOS output is generated through the drive strength can be adjusted to match independent 8-bit programmable dividers from circuit board impedances to reduce power the output of the internal PLL. supply noise, overshoot/undershoot and EMI. Table 1 displays typical rise / fall times for the The actual frequency output by the DSC2010 output with a 15pf load capacitance as a is controlled by an internal pre-programmed function of these control pins at VDD=3.3V memory (OTP). This memory stores all and room temperature. coefficients required by the PLL for up to four different frequencies. Two control pins (FS0 Table 1. Rise/Fall times for drive strengths FS1) select the output frequency. Discera Output Drive Strength Bits supports customer defined versions of the [OS2, OS1, OS0] - Default [111] DSC2010. Standard frequency options are 000 001 010 011 100 101 110 111 described in the following sections. tr (ns) 2.1 1.7 1.6 1.4 1.3 1.3 1.2 1.1 When Enable (pin 1) is floated or connected to tf (ns) 2.5 2.4 2.4 2.2 1.8 1.6 1.4 1.4 VDD, the DSC2010 is in operational mode. Driving Enable to ground will disable the output driver (hi-impedance mode). ______________________________________________________________________________________________________________________________________________ DSC2010 Page 2 MK-Q-B-P-D-12042601-2