Analog Devices Hittite 72 MHz Dual Programmable Low Pass Filter

Product Description

The HMC1023LP5E from Hittite Microwave Corporation is a 6th order, programmable bandwidth, fully calibrated, dual-low pass filter. Gain of 0 or 10 dB can be programmed and bandwidths from 5 MHz to 72 MHz are supported.

It boasts bandwidth accuracy of ±2.5% when calibrated. The built-in filter bypass option enables wider bandwidths while maintaining programmed gain and common mode control settings.

The device features an integrated ADC driver, programmable input impedance and adjustable output common mode voltage from 0.9V to 3V with a 2 Vpp signal. The output common mode can be also be adjusted lower than 0.9V common mode to achieve a seamless interface while maintaining maximum performance.

Programmable bias settings enable performance/power dissipation balances to be optimised for each application. The 6th order Butterworth transfer function delivers superior stop band rejection while keeping the passband flat and minimizing group delay variation.

Filter calibration 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.

Housed in a compact 5x5 mm SMT QFN package, the HMC1023LP5E is pin- and register-compatible with the existing HMC900LP5E programmable bandwidth Low Pass Filter.

The HMC1023LP5E requires minimal external components and provides a low-cost alternative to more complicated switched discrete filter architectures.

Typical applications include baseband filtering before or after data converters for point-to-point fixed wireless and cellular infrastructure transceivers; software defined radio applications; anti-aliasing and reconstruction filters; test and measurement equipment; ADC driver applications.