MK2705SLF Renesas

DATASHEET AUDIO CLOCK SOURCE MK2705 Description Features The MK2705 provides synchronous clock generation for Packaged in 8-pin (150 mil wide) SOIC audio sampling clock rates derived from an MPEG stream, Clock or crystal input or can be used as a standalone clock source with a 27 MHz Low phase noise crystal. The device uses the latest PLL technology to Low jitter provide good phase noise and long term jitter Exact (0 ppm) multiplication ratios characteristics in a small 8-pin package. Independent output voltage Contact IDT if you have a requirement for an input and Support for 256 times sampling rate output frequency not included in this document. Block Diagram VDDO VDD S0 S1 CLK PLL Clock Synthesis and Control X1/REFIN Circuitry Crystal 27 MHz crystal Oscillator or clock input X2 Optional crystal load capacitors GND IDT AUDIO CLOCK SOURCE 1 MK2705 REV E 051310MK2705 AUDIO CLOCK SOURCE CLOCK SYNTHESIZER Pin Assignment Output Clock Selection Table Input Output S1 S0 Frequency Frequency X1/REFIN 8 1 X2 (MHz) (MHz) VDD 2 7 VDDO 0 0 27 8.192 S0 3 6 S1 0 1 27 11.2896 1 0 27 12.288 GND 4 5 CLK 1 1 27 24.576 8-pin SOIC Pin Descriptions Pin Pin Pin Pin Description Number Name Type 1 X1/REFIN Input Connect this pin to a 27 MHz crystal or clock input 2 VDD Power Power supply for crystal oscillator and PLL. 3 S0 Input Output frequency selection. Determines output frequency per table above. On-chip pull-up. 4 GND Power Connect to ground. 5 CLK Output Clock output. 6 S1 Input Output frequency selection. Determines output frequency per table above. On-chip pull-up. 7 VDDO Power Power supply for output stage. 8 X2 Input Connect this pin to a 27 MHz crystal. Leave open if using a clock input. IDT AUDIO CLOCK SOURCE 2 MK2705 REV E 051310