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DS1094L Datasheet(PDF) 1 Page - Dallas Semiconductor |
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DS1094L Datasheet(HTML) 1 Page - Dallas Semiconductor |
1 / 11 page General Description The DS1094L is a silicon oscillator that generates four multiphase, spread-spectrum, square-wave outputs. Frequencies between 2MHz and 31.25kHz can be out- put in either two, three, or four-phase mode. The inter- nal master oscillator can be dithered by either 0, 2, 4, or 8% to reduce the amount of peak spectral energy at the fundamental and harmonic clock frequencies. This significantly reduces the amount of electromagnetic interference (EMI) radiation that is generated at the sys- tem level. The DS1094L is ideally suited as a clock gen- erator for switched-mode power supplies. The outputs generated by the DS1094L are used by DC-DC circuit- ry to efficiently shift voltages either up or down. The DS1094L can be programmed using the I2C™-compati- ble, 2-wire serial interface to select the output frequen- cy, number of clock phases, and dither rate, or optionally it can be shipped from the factory custom programmed. Applications Switch-Mode Power Supplies Servers Printers Automotive Telematics and Infotainment Features ♦ EconOscillator™ with Two, Three, or Four Phase Outputs ♦ Ideally Suited as the Clock Generator for Switch- Mode Power Supplies ♦ Output Frequencies Programmable from 2MHz to 31.25kHz ♦ Dithered Output Significantly Reduces EMI Emissions ♦ No External Timing Components Required ♦ Nonvolatile (NV) Configuration Settings ♦ User-Programmable—Factory Programmed Options Available ♦ Operating Temperature Range: -40°C to +85°C Multiphase Spread-Spectrum EconOscillator ______________________________________________ Maxim Integrated Products 1 OUT4 OUT3 GND 1 2 8 7 SCL SDA OUT2 VCC OUT1 µSOP TOP VIEW 3 4 6 5 DS1094L Pin Configuration Ordering Information VOUT VIN PHASE 1 PHASE 2 PHASE 3 DC-DC STEP-DOWN CONVERTER OUT1 OUT2 OUT3 OUT4 GND SCL SDA VCC VCC DS1094L RPULLUP THREE-PHASE EXAMPLE WITH DITHERED CLOCKS TO REDUCE EMI DC-DC STEP-DOWN CONVERTER DC-DC STEP-DOWN CONVERTER Typical Operating Circuit Rev 1; 5/04 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. PART TEMP RANGE PIN-PACKAGE DS1094LU -40 °C to +85°C 8 µSOP EconOscillator is a trademark of Dallas Semiconductor. I2C is a trademark of Philips Corp. Purchase of I2C compo- nents of Maxim Integrated Products, Inc., or one of its subli- censed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. |
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