LT1064 Datasheet | Linear Technology

LTC1064 Low Noise, Fast, Quad Universal Filter Building Block Features s s DESCRIPTION The LTC®1064 consists of four high speed, low noise switched-capacitor filter building blocks. Each filter building block, together with an external clock and three to five resistors can provide various 2nd order functions like lowpass, highpass, bandpass and notch. The center frequency of each 2nd order function can be tuned with an external clock, or a clock and resistor ratio. For Q ≤ 5, the center frequency range is from 0.1Hz to 100k Hz. For Q ≤ 3, the center frequency range can be extended to 140k Hz. Up to 8th order filters can be realized by cascading all four 2nd order sections. Any classical filter realization (such as Butterworth, Cauer, Bessel and Chebyshev) can be formed. A customized monolithic version of the LTC1064 including internal thin film resistors can be obtained for high volume applications. Consult LTC Marketing for details. The LTC1064 is manufactured using Linear Technology’s enhanced LTCMOSTM silicon gate process. , LTC and LT are registered trademarks of Linear Technology Corporation. LTCMOS is a trademark of Linear Technology Corporation. s s s s s s s Four Filters in a 0.3-Inch Wide Package One Half the Noise of the LTC1059/LTC1060/ LTC1061 Devices Maximum Center Frequency: 140k Hz Maximum Clock Frequency: 7MHz Clock-to-Center Frequency Ratio of 50:1 and 100:1 Simultaneously Available Power Supplies: ±2.375V to ± 8V Low Offsets Low Harmonic Distortion Customized Version with Internal Resistors Available U APPLICATIONS s s s s Anti-Aliasing Filters Wide Frequency Range Tracking Filters Spectral Analysis Loop Filters TYPICAL APPLICATION Clock-Tunable 8th Order Cauer Lowpass Filter with f CUTOFF up to 100k Hz 13k 66.5k 22.1k VIN 10k 18.25k 10.7k 1 2 3 4 5 6 8V 7 0.1µF 10k 49.9K 11.5K (FROM RH2, RL2) 8 9 10 11 12 24 23 22 21 20 10k 12.1k 17.4k RL2 26.7k RH2 102k PIN 12 INV B HPB/NB BPB LPB SB AGND V+ SA LPA BPA HPA/NA INV A LTC1064 INV C HPC/NC BPC...