The LTC1164-5 is a monolithic 8th order filter; it approximates either a Butterworth or a Bessel lowpass response. The LTC1164-5 features clock-tunable cutoff frequency and low power consumption (4.5mA with ±5V supplies and 2.5mA with single 5V supply). Low power operation is achieved without compromising noise or distortion performance. With ±5V supplies and 10kHz cutoff frequency, the operating signal-to-noise ratio is 86dB and the THD throughout the passband is 0.015%. Under the same conditions, a 77dB signal-to-noise ratio and distortion is obtained with a single 5V supply while the clock feed through is kept below the noise level. The maximum signal-to-noise ratio is 92dB. The LTC1164-5 approximates an 8th order Butterworth response with a clock-to-cutoff frequency ratio of 100:1 (Pin 10 to V–) or 50:1 double-sampled (Pin 10 to V+ and Pin 1 shorted to Pin 13). Double-sampling allows the input signal frequency to reach the clock frequency before any aliasing occurrence. An 8th order Bessel response can also be approximated with a clock-to-cutoff frequency ratio of 140:1 (Pin 10 to ground). With ±7.5V supply, ±5V supply and single 5V supply, the maximum clock frequency of the LTC1164-5 is 1.5MHz, 1MHz and 1MHz respectively. The LTC1164-5 is pin-compatible with the LTC1064-2 and LTC-1064-3. Applications * Anti-Aliasing Filters * Battery-Operated Instruments * Telecommunications Filters * Smoothing Filters * Pin Selectable Butterworth or Bessel Response * 4mA Supply Current with ±5V Supplies * fCUTOFF up to 20kHz * 100µVRMS Wideband Noise * THD < 0.02% (50:1, VS = ±7.5V, VIN = 2VRMS) * Operates with a Single 5V Supply (1VRMS Input Range) * 60µVRMS Clock Feedthrough (Single 5V Supply) * Operates up to ±8V Supplies * TTL/CMOS-Compatible Clock Input * No External Components * Available in 14-Pin DIP and 16-Pin SO Wide Packages https://elecena.pl/product/249306/low-power-8th-order-pin-selectable-butterworth-or-bessel-lowpass-filter 2007-03-01 https://elecena.pl/product/249306/low-power-8th-order-pin-selectable-butterworth-or-bessel-lowpass-filter 2014-05-08 https://elecena.pl/product/249306/low-power-8th-order-pin-selectable-butterworth-or-bessel-lowpass-filter 2025-01-21