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MSELP 데이터시트(PDF) 1 Page - Mixed Signal Integration |
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MSELP 데이터시트(HTML) 1 Page - Mixed Signal Integration |
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1 / 7 page ![]() Switched Capacitor Elliptic Lowpass Filter Data Sheet 4/2004 Web Site “www.mix-sig.com” © 2004 Mixed Signal Integration 1 Description The lowpass filter has an elliptic response and is made in CMOS technology. It uses a switched capacitor filter implementation. No external components are necessary to set the filter characteristics. The cutoff frequency of the lowpass filter is selectable based on the clock frequency. Either an external clock or the on-chip oscillator can be used. Included in the integrated circuit are two op amps which can be configured by the user. The clock to cutoff frequency ratio can be se- lected at either 50:1 or 100:1 by using the Clock to Corner Select pin. A current-saving power down mode can be chosen with the Power Select pin. In the low power mode the maximum corner frequency is 5 kHz. In regular operation the maximum corner frequency is 20 kHz. Features No response setting resistors Plastic DIP or S.O. packages available Switched Capacitor Filters 3.3 or 5 Volts Operation Operates from internal or external clock Includes two uncommitted op amps Power down mode Selectable clock to corner frequency ratio Applications Two Way Radio Telecommunications Data Communications Anti-Alias Filters General Purpose Low-Pass Filters Absolute Maximum Ratings Power Supply Voltage +6 V Storage Temperature -60 to +150 ?C Operating Temperature -40 to +85 ?C MSELPP 14 Pin Dip -20 to +75 ?C MSELPN 14 Pin 150 mil SOIC -20 to +75 ?C Ordering Information________ Part Number Package Operating Temperature CLOCK LOW PASS FILTER OA1 OA2 INV2 NINV GND FOUT FIN CLK R INV1 OUT1 OUT2 PS FO Block Diagram________________ |
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