HAVERHILL, Mass. Frequency Devices has unveiled a series of 4-bit, digitally programmable, four- and eight-pole surface-mount filters, the 424 and 428 series, that provide -100-dB attenuation and noise and distortion floors sufficient for 16-bit A/D converters.
The company uses a proprietary design to duplicate the performance of its more-expensive 824 and 828 series filters at lower cost and using 60 percent less board space.
The 424 and 428 series linear active filters measure 0.8 x 1.8 inches with a 28-pin DIP footprint.
Pricing for the 424 is $112. The 428 costs $210 in 100-piece lots. Delivery is four to six weeks.
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EETInfo No. 632