Analog Devices, Inc.

The HMC900LP5E is a 6th order, programmable bandwidth, fully calibrated, dual low pass filter. It features 0 or 10 dB input gain setting and supports arbitrary bandwidths from 3.5 MHz to 50 MHz, and when calibrated, is accurate to +/-2.5% of the desired bandwidth. It includes a 100 MHz bandwidth filter bypass option while retaining gain setting and common mode control. Housed in a compact 5x5 mm SMT QFN package, the HMC900LP5E requires minimal external components and provides a low cost alternative to more complicated switched discrete filter architectures. The integrated ADC driver and externally controlled common mode output level further simplify system implementations. Filter calibration for the HMC900LP5E is accomplished with any reference clock rate from 20 to 80 MHz. One time programmable (OTP) memory offers unsurpassed flexibility allowing the user “set and forget” parameters like gain and bandwidth setting. Matched filter paths provide excellent quadrature balance, making the HMC900LP5E ideal for I/Q communications applications. The 6th order Butterworth transfer function delivers superior stop band rejection while maintaining both a flat passband and minimal group delay variation.