LTC1069-6

The LTC^®1069-6 is a monolithic low power, 8th order low-pass filter optimized for single 3V or single 5V supplyoperation. The LTC1069-6 typically consumes 1mA undersingle 3V supply operation and 1.2mA under 5V operation.

The cutoff frequency of the LTC1069-6 is clock tunable and itis equal to the clock frequency divided by 50. The input signalis sampled twice per clock cycle to lower the risk of aliasing.

The typical passband ripple is ±0.1dB up to 0.9fCUTOFF.The gain at fCUTOFF is 0.7dB. The transition band of theLTC1069-6 features progressive attenuation reaching 42dBat 1.3fCUTOFF and 70dB at 2.1fCUTOFF. The maximumstopband attenuation is 72dB.

The LTC1069-6 can be clock tuned for cutoff frequenciesup to 20kHz (single 5V supply) and for cutoff frequenciesup to 14kHz (single 3V supply).

The low power feature of the LTC1069-6 does not penalizethe device's dynamic range. With single 5V supply and aninput range of 0.4VRMS to 1.4VRMS,the Signal-to-(Noise+ THD) ratio is 70dB. The wideband noise of the device is 125µVRMS.Other filter responses with higher speed can be obtained.Please contact LTC Marketing for details.The device is available in an 8-pin SO package.