DSC2010FE2-B0008 Crystal-less™ Configurable Clock Generator General Description Features The DSC2010FE2-B0008 is a high performance LVCMOS oscillator utilizing Micrel's proven silicon MEMS technology to provide excellent jitter and stability while incorporating additional device functionality. The DSC2010FE2-B0008 allows the user to easily modify the frequency and drive strength of the oscillator using pins. The DSC2010FE2-B0008 has provision for up to four user-defined pre-programmed, pin-selectable output frequencies, and eight pin-selectable output drive levels to help reduce EMI. • Frequency and output formats: - LVCMOS 100/66.6666/83.3333MHz • Low RMS phase jitter: <1ps (typ) • ±25ppm frequency stability • -20°C to +70°C ext. commercial temperature range • High supply noise rejection: -50dBc • Pin-selectable configurations - 3-bit output drive strength - Up to 4 output frequency combinations • Excellent shock & vibration immunity - Qualified to MIL-STD-883 • High reliability - 20x better MTF than quartz oscillators • Supply range of 2.25 to 3.6V • AEC-Q100 automotive qualified • 14-pin 3.2mm x 2.5mm QFN package Applications • Consumer Electronics • Storage Area Networks - SATA, SAS, Fibre Channel • Passive Optical Networks - EPON, 10G-EPON, GPON, 10G-GPON • Ethernet - 1G, 10GBASE-T/KR/LR/SR, and FCoE • HD/SD/SDI Video & Surveillance • PCI Express • Automotive Block Diagram VDD/VDD2 Control Circuitry OS0/OS1/OS2 MEMS PLL ÷2 CLK1 100MHz LVCMOS ÷ M1 FS0/FS1 OE VSS Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com April 27, 2015 2928 Revision 1.0 [email protected] or (408) 955-1690 Micrel, Inc. DSC2010FE2-B0008 Ordering Information Ordering Part Number Industrial Temperature Range Shipping Package DSC2010FE2-B0008 -20°C to +70°C Tube 14-pin 3.2mm x 2.5mm QFN DSC2010FE2-B0008T -20°C to +70°C Tape and Reel 14-pin 3.2mm x 2.5mm QFN VDD2 OS2 Pin Configuration VDD Devices are Green and RoHS compliant. Sample material may have only a partial top mark. OS1 NC OS0 GND CLK1 NC NC FS1 NC FS0 OE 14-pin 3.2mm x 2.5mm QFN Pin Description Pin Number Pin Name Pin Type 1 OE I 2 NC Leave unconnected or connect to ground 3 NC Leave unconnected or connect to ground 4 GND PWR 5 FS0 I Least significant bit for frequency selection, see Table 2 for details 6 FS1 I Most significant bit for frequency selection, see Table 2 for details 7 NC 8 CLK1 O LVCMOS output 9 OS0 I Least significant bit for output drive strength selection, see Table 1 for details 10 OS1 I Middle bit for output drive strength selection, see Table 1 for details 11 NC 12, 13 VDD2, VDD PWR 14 OS2 I April 27, 2015 2928 Pin Function Enables outputs when high and disables outputs when low Ground Leave unconnected or connect to ground Leave unconnected or connect to ground Power supply Most significant bit for output drive strength selection, see Table 1 for details 2 Revision 1.0 [email protected] or (408) 955-1690 Micrel, Inc. DSC2010FE2-B0008 Operational Description The DSC2010FE2-B0008 is a LVCMOS oscillator consisting of a MEMS resonator and a supporting PLL IC. The LVCMOS output is generated through independent 8-bit programmable dividers from the output of the internal PLL. The actual frequency output by DSC2010FE2-B0008 is controlled by an internal pre-programmed memory (OTP). This memory stores all coefficients required by the PLL for up to four different frequencies. Two control pins (FS0, FS1) select the output frequency. When OE (pin 1) is floated or connected to VDD, the DSC2010FE2-B0008 is in operational mode. Driving OE to ground will disable the output driver (hiimpedance mode). DSC2010FE2-B0008 has programmable output drive strength. Using three control pins (OS0-OS2) the drive strength can be adjusted to match circuit board impedances to reduce power supply noise, overshoot/ undershoot and EMI. Table 1 displays typical rise / fall times for the output with a 15pF load capacitance as a function of these control pins at VDD = 3.3V and room temperature. Output Drive Strength Bits [OS2, OS1, OS0] - Default is [111] 000 001 010 011 100 101 110 111 tr (ns) 2.1 1.7 1.6 1.4 1.3 1.3 1.2 1.1 tf (ns) 2.5 2.4 2.4 2.2 1.8 1.6 1.4 1.4 Table 1. Rise/Fall Times for Drive Strengths Output Clock Frequencies Frequency select bits are weakly tied high so if left unconnected the default setting will be [11] and the device will output the associated frequency highlighted in bold. Freq Select Bits [FS1, FS0] - Default is [11] Freq (MHz) CLK1 00 01 10 11 66.6666 83.3333 NA 100 Table 2. Pin-Selectable Output Frequencies Absolute Maximum Ratings Item Min. Max. Units Supply Voltage -0.3 +4.0 V Input Voltage -0.3 VDD + 0.3 V Junction Temp - +150 °C Storage Temp -55 +150 °C Soldering Temp - +260 °C ESD HBM MM CDM - 4000 400 1500 Condition 40sec max. V 1000+ years of data retention on internal memory April 27, 2015 2928 3 Revision 1.0 [email protected] or (408) 955-1690 Micrel, Inc. DSC2010FE2-B0008 Specifications (Unless specified otherwise: T = 25°C, max LVCMOS drive strength) Parameter Symbol Supply Voltage¹ VDD Supply Current IDD Condition Min. Typ. 2.25 OE pin low - output is disabled 21 Max. Units 3.6 V 23 mA Frequency Stability F Includes frequency variation due to initial tolerance, temp. and power supply voltage ±25 ppm Aging F First year (@ 25°C) ±5 ppm T = 25°C 5 ms 0.25 x VDD V Startup Time² tSU Input Logic Levels Input Logic High Input Logic Low VIH VIL Output Disable Time³ tDA 5 ns Output Enable Time³ tEN 20 ns 4 Pull-Up Resistor 0.75 x VDD - Pull-up exists on all digital IO 40 kOhms LVCMOS Output OE pin high - output is enabled CL = 15pF, F0 = 125MHz Supply Current 4 IDD Output Logic Levels Output Logic High Output Logic Low VOH VOL I = ±6mA Output Transition Time³ Rise Time Fall Time tR tF 20% to 80% CL = 15pF 1.1 1.3 Frequency CLK1 [FS1, FS0] = [1, 1] 100 Output Duty Cycle SYM Period Jitter JPER F0 = 125MHz Integrated Phase Noise JPH 200kHz to 20MHz @ 125MHz 100kHz to 20MHz @ 125MHz 12kHz to 20MHz @ 125MHz 31 0.9 x VDD - 45 35 mA 0.1 x VDD V 2 2 MHz 55 3 0.3 0.38 1.7 ns % psRMS 2 psRMS Notes: 1. Pin 12 VDD2, and pin 13 VDD should be filtered with 0.1uF capacitors. 2. tSU is time to 100ppm stable output frequency after VDD is applied and outputs are enabled. 3. Output Waveform and Test Circuit figures below define the parameters. 4. Output is enabled if OE pin is floated or not connected. April 27, 2015 2928 4 Revision 1.0 [email protected] or (408) 955-1690 Micrel, Inc. DSC2010FE2-B0008 Nominal Performance Parameters (Unless specified otherwise: T = 25°C, VDD = 3.3V) Figure 1. LVCMOS Phase Jitter (integrated phase noise) LVCMOS Output Waveform Output OE Figure 2. LVCMOS Output Waveform MSL 1 @ 260°C refer to JSTD-020C Ramp-Up Rate (200°C to Peak Temp) 3°C/sec Max. Preheat Time 150°C to 200°C 60 - 180 sec Time maintained above 217°C 60 - 150 sec Peak Temperature 255 - 260°C Time within 5°C of actual Peak 20 - 40 sec Ramp-Down Rate 6°C/sec Max. Time 25°C to Peak Temperature 8 min Max. April 27, 2015 2928 5 Revision 1.0 [email protected] or (408) 955-1690 Micrel, Inc. DSC2010FE2-B0008 Solder Reflow Profile Figure 3. Solder Reflow Profile Package Information6 3.2mm x 2.5mm 14 Lead Plastic Package Notes: 5. Connect the exposed die paddle to ground. 6. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com. Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel's terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2015 Micrel, Incorporated. April 27, 2015 2928 6 Revision 1.0 [email protected] or (408) 955-1690