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LTC1062 Datasheet(PDF) 8 Page - Linear Technology |
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LTC1062 Datasheet(HTML) 8 Page - Linear Technology |
8 / 16 page 8 LTC1062 1062fd AC Coupling an External CMOS Clock Powered from a Single Positive Supply, V+ FB AGND V– DIVIDER RATIO BOUT OUT V+ COSC 1 2 3 4 8 7 6 5 LTC1062 0.01µF V+ 0 1062 TA03 C VIN V+ 100k VOUT V– Adding an External (R1, C1) to Eliminate the Clock Feedthrough and to Improve the High Frequency Attenuation Floor FB AGND V– DIVIDER RATIO BOUT OUT V+ COSC 1 2 3 4 8 7 6 5 LTC1062 VOUT V+ fCLK 1062 TA04 C C1 0.01C VIN R V– R1 10R – + EXTERNAL BUFFER Filtering AC Signals from High DC Voltages FB AGND V– DIVIDER RATIO BOUT OUT V+ COSC 1 2 3 4 8 7 6 5 LTC1062 CLK IN = fC • 100 1062 TA05 C 0.01µF C 0.01µF 12R 309.6k VIN R 25.8k V– = –5V V+ = 5V DC OUTPUT EXAMPLE: fCLK = 100KHz, fC = 1kHz. THE FILTER ACCURATELY PASSES THE HIGH DC INPUT AND ACTS AS 5TH ORDER LP FILTER FOR THE AC SIGNALS RIDING ON THE DC HIGH DC INPUT = 100V fIN/fC 0.01 –1.4 –1.0 –0.6 0.2 0.1 1 1062 TA06 –0.2 –1.2 –0.8 0 –0.4 VS = ±5V fCLK = 100kHz Passband Amplitude Response for the High DC Accurate 5th Order Filter TYPICAL APPLICATIO S |
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Similar Description - LTC1062 |
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