LTC1164-5 Datasheet | Linear Technology

LTC1164-5 Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter DESCRIPTIO The LTC®1164-5 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 (4.5m A with ± 5V supplies and 2.5m A with single 5V supply). Low power operation is achieved without promising noise or distortion performance. With ± 5V supplies and 10k Hz cutoff frequency, the operating signal-to-noise ratio is 86d B and the THD throughout the passband is 0.015%. Under the same conditions, a 77d B signal-tonoise ratio and distortion is obtained with a single 5V supply while the clock feedthrough is kept below the noise level. The maximum signal-to-noise ratio is 92d B. 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-patible with the LTC1064-2 and LTC-1064-3. , LTC and LT are registered trademarks of Linear Technology Corporation. Features s s s s s s s s s s Pin Selectable Butterworth or Bessel Response 4m A Supply Current with ± 5V Supplies f CUTOFF up to 20k Hz 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-patible Clock Input No External ponents U APPLICATIO S s s s s Anti-Aliasing Filters Battery-Operated Instruments Telemunications Filters Smoothing...