LTC1064-1 Datasheet | Linear Technology

Low Noise, 8th Order, Clock Sweepable Elliptic Lowpass Filter Features - 8th Order Filter in a 14-Pin Package - No External ponents - 100:1 Clock to Center Ratio - 150µVRMS Total Wideband Noise - 0.03% THD or Better - 50k Hz Maximum Corner Frequency - Operates from ±2.37V to ±8V Power Supplies - Passband Ripple Guaranteed Over Full Military Temperature Range U APPLICATIO S - Antialiasing Filters - Tele PCM Filters DESCRIPTIO The LTC®1064-1 is an 8th order, clock sweepable elliptic (Cauer) lowpass switched capacitor filter. The passband ripple is typically ±0.15d B, and the stopband attenuation at 1.5 times the cutoff frequency is 68d B or more. An external TTL or CMOS clock programs the value of the filter’s cutoff frequency. The clock to cutoff frequency ratio is 100:1. No external ponents are needed for cutoff frequencies up to 20k Hz. For cutoff frequencies over 20k Hz two low value capacitors are required to maintain passband flatness. The LTC1064-1 Features low wideband noise and low harmonic distortion even for input voltages up to 3VRMS. In fact the LTC1064-1 overall performance pletes with equivalent multiple op amp RC active realizations. The LTC1064-1 is available in a 14-pin DIP or 16-pin surface mounted SW package. The LTC1064-1 is pin patible with the LTC1064-2. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO 8V 0.1µF 8th Order Clock Sweepable Lowpass Elliptic Antialiasing Filter 1 14 INV C R(h, I) 2 VIN 13 P2- 3 AGND V- 12 LTC1064-1 V+ f...