LTC1563-2/LTC1563-3 Active RC, 4th Order Lowpass Filter Family FEATURES DESCRIPTIO Extremely Easy to UseA Single Resistor Value The LTC 1563-2/LTC1563-3 are a family of extremely Sets the Cutoff Frequency (256Hz < f < 256kHz) easy-to-use, active RC lowpass filters with rail-to-rail C Extremely FlexibleDifferent Resistor Values inputs and outputs and low DC offset suitable for systems Allow Arbitrary Transfer Functions with or without with a resolution of up to 16 bits. The LTC1563-2, with a Gain (256Hz < f < 256kHz) single resistor value, gives a unity-gain Butterworth C Supports Cutoff Frequencies Up to 360kHz Using response. The LTC1563-3, with a single resistor value, TM FilterCAD gives a unity-gain Bessel response. The proprietary LTC1563-2: Unity-Gain Butterworth Response Uses a architecture of these parts allows for a simple resistor Single Resistor Value, Different Resistor Values calculation: Allow Other Responses with or without Gain R = 10k (256kHz/f ) f = Cutoff Frequency C C LTC1563-3: Unity-Gain Bessel Response Uses a where f is the desired cutoff frequency. For many appli- Single Resistor Value, Different Resistor Values C cations, this formula is all that is needed to design a filter. Allow Other Responses with or without Gain By simply utilizing different valued resistors, gain and Rail-to-Rail Input and Output Voltages other responses are achieved. Operates from a Single 3V (2.7V Min) to 5V Supply Low Noise: 36V for f = 25.6kHz, 60V for RMS C RMS The LTC1563-X features a low power mode, for the lower f = 256kHz C frequency applications, where the supply current is re- f Accuracy < 2% (Typ) C duced by an order of magnitude and a near zero power DC Offset < 1mV shutdown mode. Cascadable to Form 8th Order Lowpass Filters The LTC1563-Xs are available in the narrow SSOP-16 Available in Narrow SSOP-16 Package U package (Same footprint as an SO-8 package). APPLICATIO S , LTC and LT are registered trademarks of Linear Technology Corporation. FilterCAD is trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Discrete RC Active Filter Replacement Antialiasing Filters Smoothing or Reconstruction Filters Linear Phase Filtering for Data Communication Phase Locked Loops TYPICAL APPLICATIO Frequency Response 10 Single 3.3V, 256Hz to 256kHz Butterworth Lowpass Filter 0 3.3V LTC1563-2 0.1F 10 1 16 V OUT + LP V R = 10k R 2 15 20 f = 256kHz C SA LPB 3 14 30 NC NC R R 4 13 R = 10M INVA INVB 40 f = 256Hz 5 12 C NC NC 50 R 6 11 LPA SB 7 10 60 AGND R NC 8 9 R 70 V EN V IN 80 0.1F 100 1k 10k 100k 1M 10k f = 256kHz FREQUENCY (Hz) C 1563 TA01 () R 1563 TA02 156323fa 1 GAIN (dB) U ULTC1563-2/LTC1563-3 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1) TOP VIEW ORDER PART + Total Supply Voltage (V to V ) ............................... 11V + LP 1 16 V NUMBER Maximum Input Voltage at SA 2 15 LPB + Any Pin ....................... (V 0.3V) V (V + 0.3V) LTC1563-2CGN PIN NC 3 14 NC Power Dissipation.............................................. 500mW LTC1563-3CGN INVA 4 13 INVB LTC1563-2IGN Operating Temperature Range NC 5 12 NC LTC1563-3IGN LTC1563C ............................................... 0C to 70C LPA 6 11 SB AGND 7 10 NC LTC1563I............................................ 40C to 85C GN PART V 8 9 EN Storage Temperature Range ................. 65C to 150C MARKING Lead Temperature (Soldering, 10 sec).................. 300C GN PACKAGE 15632 16-LEAD PLASTIC SSOP 15633 T = 150C, = 135C/ W JMAX JA NOTE: PINS LABELED NC ARE NOT CONNECTED 15632I INTERNALLY AND SHOULD BE CONNECTED TO THE 15633I SYSTEM GROUND Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: