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LTC1164 Datasheet(PDF) 1 Page - Linear Technology |
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LTC1164 Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page LTC1164 1 1164fa ■ Low Power ■ 4 Filters in a 0.3" Wide Package ■ 1/2 the Noise of the LTC1059, 60, 61 Devices ■ Wide Output Swing ■ Clock-to-Center Frequency Ratios of 50:1 and 100:1 ■ Operates from ±2.37V to ±8V Power Supplies ■ Customized Version with Internal Resistors Available ■ Ratio of 50:1 and 100:1 Simultaneously Available The LTC ®1164 consists of four low power, low noise 2nd order switched capacitor filter building blocks. Each building block typically consumes 850µA supply current. Low power is achieved without sacrificing noise and distortion. Each building block, together with 3 to 5 resistors, can provide 2nd order functions like lowpass, highpass, bandpass, and notch. The center frequency of each 2nd order section 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 20kHz. 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 LTC1164 including internal thin film resistors can be obtained. Consult LTC Marketing for details. The LTC1164 is manufactured using Linear Technology’s enhanced LTCMOS™ silicon gate process. Low Power, Low Noise, Quad Universal Filter Building Block ■ Antialiasing Filters ■ Telecom Filters ■ Spectral Analysis ■ Loop Filters ■ For Fixed Lowpass Filter Requirements use the LTC1164-XX Series Dual 5th Order Linear Phase Filter with Stopband Notch Dual 5th Order Linear Phase Filter with Stopband Notch, fCLK = 500kHz FREQUENCY (Hz) 1k 10k 100k LTC1164 • TA02 VOUT2 VOUT1 –90.00 –70.00 –40.00 10.00 –10.00 –80.00 –60.00 –50.00 –30.00 0.0 –20.00 SUPPLY TOTAL VOLTAGE VIN HARMONIC DISTORTION SIGNAL/NOISE ±2.5 1VRMS 0.015% (– 76dB) 86dB ±5.0 2VRMS 0.025% (– 72dB) 92dB ±7.5 4VRMS 0.04% (– 68dB) 98dB LTC1164 • TA01 0.1µF 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 549k 63.4k 49.9k 78.7k 8.66k C1 C2 36.5k 36.5k 49.9k 63.4k 549k 78.7k 8.66k 133k 102k VIN1 VIN2 VOUT1 VOUT2 fCLK 174k 102k 174k 133k 210k C1 = 0.0033µF C2 = 0.0068µF fCLK = 500kHz WIDEBAND NOISE = 50µVRMS TOTAL SUPPLY CURRENT = 3mA ALL RESISTORS ARE 1% METAL FILM 210k V+ V– 0.1µF LTC1164 FEATURES DESCRIPTIO APPLICATIO S LTCMOS trademark of Linear Technology Corporation. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO |
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