DEVIATION FROM IDEAL Q OF 10 (%) LTC1059 High Performance Switched Capacitor Universal Filter FEATURES DESCRIPTIO All Filter Parameters Guaranteed Over Temperature The LTC 1059 consists of a general purpose, high perfor- Wide Center Frequency Range (0.1Hz to 40kHz) mance, active filter building block and an uncommitted op Low Noise, Wide Dynamic Range amp. The filter building block together with an external Guaranteed Operation for 2.37V and 5V Supply clock and 2 to 5 resistors can produce various 2nd order Low Power Consumption functions which are available at its three output pins. Two Guaranteed Clock-to-Center Frequency Accuracy of out of three always provide lowpass and bandpass func- 0.8% tions while the third output pin can produce notch or Guaranteed Low Offset Voltages Over Temperature highpass or allpass. The center frequency of these func- Very Low Center Frequency and Q Tempco tions can be tuned from 0.1Hz to 40kHz and is dependent 2 Clock Input T L or CMOS Compatible on an external clock or an external clock and a resistor Separate Highpass (or Notch or Allpass), Bandpass, ratio. The filter can handle input frequencies up to 100kHz. Lowpass Outputs The uncommitted op amp can be used to obtain additional allpass and notch functions, for gain adjustment or for U cascading techniques. APPLICATIO S Higher than 2nd order filter functions can be obtained by Sinewave Oscillators cascading the LTC1059 with the LTC1060 dual universal Sweepable Bandpass/Notch Filters filter or the LTC1061 triple universal filter. Any classical Full Audio Frequency Filters filter realization (such as Butterworth, Cauer, Bessel and Tracking Filters Chebyshev) can be formed. , LTC and LT are registered trademarks of Linear Technology Corporation. LTCMOS trademark of Linear Technology Corporation. The LTC1059 can be operated with single or dual supplies ranging from 2.37V to 8V (or 4.74V to 16V single supply). The LTC1059 is manufactured by using Linear Technologys TM enhanced LTCMOS silicon gate process. TYPICAL APPLICATIO Wide Range 2nd Order Bandpass/Notch Filter with Q = 10 Center Frequency and Q Error 30 1.2 T = 25C 50k NOTCH OUT A BP OUT CLOCK 35.35 = 25 1.0 CENTER FREQUENCY 1 1 14 BP LP LTC1059 7.15k 20 0.8 2 13 N/AP/HP V 02 50k V 15 IN 3 12 0.6 INV1 INV2 DC-200kHz CENTER FREQUENCY 4 11 10 S1 AGND 0.4 ERROR 5 10 8V S V A 5 0.2 6 9 + Q ERROR 8V V 50/100/HOLD 0 0 7 8 051105 20 25 30 35 40 45 LSh CLK IDEAL CENTER FREQUENCY (kHz) 1058 TA01b 2 1059 TA01a T L CLOCK IN 2MHz 1059fd 1 CENTER FREQUENCY ERROR NORMALIZED TO 5kHz MEASUREMENT (%) U ULTC1059 UUW ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1) TOP VIEW ORDER PART Supply Voltage ........................................................ 18V 1 14 LP BP NUMBER Power Dissipation.............................................. 500mW N/AP/HP 2 13 V 02 Operating Temperature Range INV1 3 12 INV2 LTC1059CN 4 11 AGND S1 LTC1059C ................................... 40C T 85C A LTC1059CS S 5 10 V A LTC1059AM, LTC1059M ........... 55C T 125C A + V 6 9 50/100/HOLD Storage Temperature Range ................. 65C to 150C 7 CLK LSh 8 Lead Temperature (Soldering, 10 sec).................. 300C N PACKAGE S PACKAGE 14-LEAD PLASTIC SO 14-LEAD PDIP T = 110C, = 130C/W (N) JMAX JA T = 110C, = 110C/W (S) JMAX JA J PACKAGE LTC1059ACJ 14-LEAD CERDIP T = 150C, = 80C/W JMAX JA LTC1059AMJ LTC1059CJ OBSOLETE PACKAGE Consider the N or S Package for Alternate Source LTC1059MJ Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25C. A 2 (Complete Filter) V = 5V, T L clock input level unless otherwise specified. S PARAMETER CONDITIONS MIN TYP MAX UNITS Center Frequency Range, f f Q 400kHz, Mode 1 0.1 - 40k Hz 0 0 f Q 1.6MHz, Mode 1 0.1 - 18k Hz 0 f Q 250kHz, Mode 3, V = 7.5V 0.1 - 20k Hz 0 S f Q 1MHz, Mode 3, V = 7.5V 0.1 - 16k Hz 0 S Input Frequency Range 0 - 200k Hz Clock-to-Center Frequency Ratio Mode 1, 50:1, f = 250kHz, Q = 10 50 0.8% CLK Mode 1, 100:1, f = 500kHz, Q = 10 100 0.8% CLK Q Accuracy Mode 1, 50:1 or 100:1, f = 5kHz 0 Q = 10 0.5 5 % f Temperature Coefficient Mode 1, f < 500kHz 5 ppm/C 0 CLK Q Temperature Coefficient Mode 1, f < 500kHz, Q = 10 15 ppm/C CLK DC Offset V 215 mV OS1 V f = 250kHz, 50:1, S High (N Package) 330 mV OS2 CLK A V f = 250kHz, 50:1, S High (S Package) 340 mV OS2 CLK A V f = 500kHz, 100:1, S High (N Package) 660 mV OS2 CLK A V f = 500kHz, 100:1, S High (S Package) 680 mV OS2 CLK A V f = 250kHz, 50:1, S Low (N Package) 220 mV OS2 CLK A V f = 250kHz, 50:1, S Low (S Package) 230 mV OS2 CLK A V f = 500kHz, 100:1, S Low (N Package) 440 mV OS2 CLK A V f = 500kHz, 100:1, S Low (S Package) 460 mV OS2 CLK A V f = 250kHz, 50:1 (N Package) 220 mV OS3 CLK V f = 250kHz, 50:1 (S Package) 230 mV OS3 CLK V f = 500kHz, 100:1 (N Package) 440 mV OS3 CLK V f = 500kHz, 100:1 (S Package) 460 mV OS3 CLK 1059fd 2 U WWW