Analog Devices ADMV8809 Product Info

• Digitally tunable, high-pass and low-pass tuning
• Suboctave bandwidths with additional user adjustability
• Rejection: 40dB
• Single-chip replacement for discrete filter banks
• Compact, 8mm × 8mm × 1.07mm LGA package

The ADMV8809 is a fully monolithic microwave IC (MMIC) that features digitally selectable operating frequencies. The device features four independently controlled high-pass filters (HPFs) and low-pass filters (LPFs) that span the 0.5GHz to 9GHz frequency range (f_CENTER).

The flexible architecture of the ADMV8809 allows the 3dB cutoff frequency (f_3dB) of the high-pass and low-pass filters to be controlled independently. The digital logic control on each filter is 3-bits wide (eight states) and controls the on-chip reactive elements to adjust the f3dB. The typical insertion loss is <6.2dB. When using the HPF = LPF state, the filter has 40dB rejection for the low side at 0.5 × f_U3dB and for the high side at 2 × f_L3dB, which is ideally suited for minimizing system second-order intercept (IP2) and harmonics.

This tunable filter can be used as a smaller alternative to large switched filter banks and discrete component-based tunable filters, and the ADMV8809 provides a dynamically adjustable solution in advanced communications applications.

APPLICATIONS

• Land mobile radios
• Test and measurement equipment
• Military radars, electronic warfare, and electronic countermeasures
• Satellite communications
• Industrial and medical equipment