LTC1061 High Performance Triple Universal Filter Building Block FEATURES DESCRIPTIO Three Filters in a Single Package The LTC 1061 consists of three high performance, univer- Up to 6th Order Filter Functions sal filter building blocks. Each filter building block together Center Frequency Range up to 35kHz with an external clock and 2 to 5 resistors can produce f Q Product up to 1MHz various second order functions which are available at its O Guaranteed Center Frequency and Q Accuracy Over three output pins. Two out of three always provide low- Temperature pass and bandpass functions while the third output pin Guaranteed Low Offset Voltages Over Temperature can produce highpass or notch or allpass. The center 90dB Signal-to-Noise Ratio frequency of these functions can be tuned with an external Operation from Single 4.7V Supply, Up to 8V clock or an external clock and a resistor ratio. For Q < 5, the Guaranteed Filter Specifications with 5V Supply and center frequency ranges from 0.1Hz to 35kHz. For Qs of 10 2.37V Supply or above, the center frequency ranges from 0.1Hz to Low Power Consumption with Single 5V Supply 28kHz. 2 Clock Inputs T L and CMOS Compatible The LTC1061 can be used with single or dual supplies Available in 20-Pin DIP and 20-Pin SO Wide Package ranging from 2.37V to 8V (or 4.74V to 16V). When the filter operates with supplies of 5V and above, it can U handle input frequencies up to 100kHz. APPLICATIO S The LTC1061 is compatible with the LTC1059 single High Order, Wide Frequency Range Bandpass, universal filter and the LTC1060 dual. Higher than 6th Lowpass, Notch Filters order functions can be obtained by cascading the LTC1061 Low Power Consumption, Single 5V Supply, with the LTC1059 or LTC1060. Any classical filter realiza- Clock-Tunable Filters tion can be obtained. Tracking Filters TM , LTC and LT are registered trademarks of Linear Technology Corporation. LTCMOS Antialiasing Filters is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATIO Amplitude Response 6th Order, Clock-Tunable, 0.5dB Ripple Chebyshev BP Filter f = 1MHz CLK 2kHz 0 9.31k 1k 1 20 165k 78.7k 2 19 20 4.99k 4.99k 3 18 23.7k 165k 4 17 40 V < 100kHz IN 5 16 LTC1061 49.9k 60 6 15 V = 7.5V 4.99k 7 14 7.5V 80 165k 8 13 2 T CLK IN < 1.2MHz 5.49k 9 12 100 10 11 0 10 20 30 40 50 + V = 7.5V INPUT FREQUENCY GAIN (kHz) V OUT 1061 TA01 1061 TA02 1061fe 1 FILTER GAIN (dB) U ULTC1061 ABSOLUTE AXI U RATI GS /O PACKAGE RDER I FOR ATIO (Note 1) TOP VIEW ORDER PART Supply Voltage ....................................................... 18V LP 1 20 LP B NUMBER A Power Dissipation............................................. 500mW BP 2 19 BP B A Operating Temperature Range LTC1061ACN N 3 18 N B A LTC1061AC, LTC1061C ............ 40C T 85C A INV 4 17 INV LTC1061CN B A LTC1061AM, LTC1061M ......... 55C T 125C A S1 5 16 S1 B LTC1061CSW A Storage Temperature Range ................. 65C to 150C AGND 6 15 V Lead Temperature (Soldering, 10 sec.)................ 300C 50/100/HOLD 7 14 LP C CLK 8 13 BP C LS 9 12 HP C h + V 10 11 INV C N PACKAGE 20-LEAD PLASTIC DIP SW PACKAGE 20-LEAD PLASTIC SO WIDE LTC1061AMJ T = 100C, = 100C/W (N) JMAX JA T = 100C, = 85C/W (SW) JMAX JA LTC1061MJ J PACKAGE LTC1061ACJ 20-LEAD CERAMIC DIP T = 125C, = 100C/W (J) JMAX JA LTC1061CJ OBSOLETE PACKAGE Consider the N20 Package for Alternate Source Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: