MK5811ASLF Renesas

DATASHEET LOW EMI CLOCK GENERATOR MK5811A Description Features The MK5811A device generates a low EMI output clock Packaged in 8-pin SOIC from a clock or crystal input. The device is designed to Pb (lead) free package dither a high emissions clock to lower EMI in consumer Provides a spread spectrum output clock applications. Using IDTs proprietary mix of analog and digital Phase Locked Loop (PLL) technology, the device Supports flat panel controllers spreads the frequency spectrum of the output and reduces Accepts a clock or crystal input (provides same the frequency amplitude peaks by several dB. The frequency dithered output) MK5811A offers both centered and down spread from a Input frequency range of 4 to 32 MHz high-speed clock input. Output frequency range of 4 to 32 MHz For different multiplier configurations, use the MK5812 (2x) 1X frequency multiplication or MK5814 (4x). Center and down spread IDT offers many other clocks for computers and computer Peak reduction by 8 dB to 16 dB typical on 3rd through peripherals. Consult IDT when you need to remove crystals 19th odd harmonics and oscillators from your board. Low EMI feature can be disabled Operating voltage of 3.3 V Advanced, low-power CMOS process Block Diagram VDD 2 S1:0 Spread Direction PLL Clock FRSEL Synthesis and Spread SSCLK Spectrum X1/CLK Circuitry Clock Buffer/ Crystal Ocsillator X2 The crystal requires external capacitors for GND accurate tuning of the clock IDT LOW EMI CLOCK GENERATOR 1 MK5811A REV D 071014MK5811A LOW EMI CLOCK GENERATOR SSCG Pin Assignment Spread Direction and Spread Percentage S1 S0 Spread Spread X1/ICLK 8 1 X2 Pin 3 Pin 4 Direction Percentage GND 0 0Center 1.4 2 7 VDD 0 MCenter 1.1 S1 3 6 FRSEL 0 1Center 0.6 S0 5 4 SSCLK M 0Center 0.5 M M No Spread - 8-pin (150 mil) SOIC M 1 Down -1.6 1 0Down -2.0 1 MDown -0.7 1 1 Down -3.0 0 = connect to GND M = unconnected (floating) 1 = connect directly to VDD Frequency Selection Product FRSEL Input Multiplier Output (pin 6) Freq. Range Freq. Range MK5811 0 4.0 to 8.0 MHz X1 4.0 to 8.0 MHz 1 8.0 to 16.0MHz X1 8.0 to 16.0MHz M 16.0 to 32.0MHz X1 16.0 to 32.0MHz 1 MK5812 0 4.0 to 8.0 MHz X2 8.0 to 16.0MHz 1 8.0 to 16.0MHz X2 16.0 to 32.0MHz M 16.0 to 32.0MHz X2 32.0 to 64.0MHz 1 MK5814 0 4.0 to 8.0 MHz X4 16.0 to 32.0MHz 1 8.0 to 16.0MHz X4 32.0 to 64.0MHz M 16.0 to 32.0MHz X4 64.0 to 128MHz 0 = connect to GND M = unconnected (floating) 1 = connect directly to VDD Note 1: The information in this datasheet does not apply to the MK5812 and MK5814 as each have independent datasheets available at www.idt.com. IDT LOW EMI CLOCK GENERATOR 2 MK5811A REV D 071014