The LTC1069-1 is a monolithic 8th order lowpass filter featuring clock-tunable cutoff frequency and 2.5mA power supply current with a single 5V supply. An additional feature of the LTC1069-1 is operation with a single 3.3V supply. The cutoff frequency (fCUTOFF) of the LTC1069-1 is equal to the clock frequency divided by 100. The gain at fCUTOFFM is –0.7dB and the typical passband ripple is ±0.15dB up to 0.9fCUTOFF. The stopband attenuation of the LTC1069-1 features a progressive elliptic response reaching 20dB attenuation at 1.2fCUTOFF, 52dB attenuation at 1.4fCUTOFF and 70dB attenuation at 2fCUTOFF. With ±5V supplies, the LTC1069-1 cutoff frequency can be clock-tuned up to 12kHz; with a single 5V supply, the maximum cutoff frequency is 8kHz. The low power feature of the LTC1069-1 does not penalize the device’s dynamic range. With ±5V supplies and an input range of 0.3VRMS to 2.5VRMS, the signal-to-(noise + THD) ratio is ≥70dB. The wideband noise of the LTC1069-1 is 110μVRMS. Other filter responses with lower power or higher speed can be obtained. Please contact LTC marketing for details. The LTC1069-1 is available in 8-pin PDIP and 8-pin SO packages. Applications * Telecommunication Filters * Antialiasing Filters * 8th Order Elliptic Filter in SO-8 Package * Operates from Single 3.3V to ±5V Power Supplies * –20dB at 1.2fCUTOFF * –52dB at 1.4fCUTOFF * –70dB at 2fCUTOFF * Wide Dynamic Range * 110μVRMS Wideband Noise * 3.8mA Supply Current with ±5V Supplies * 2.5mA Supply Current with Single 5V Supply * 2mA Supply Current with Single 3.3V Supply https://elecena.pl/product/249025/low-power-8th-order-progressive-elliptic-lowpass-filter 2007-03-01 https://elecena.pl/product/249025/low-power-8th-order-progressive-elliptic-lowpass-filter 2014-04-11 https://elecena.pl/product/249025/low-power-8th-order-progressive-elliptic-lowpass-filter 2025-01-17