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A low noise integrated AMPS IF filter

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7 Author(s)
Adachi, T. ; Asahi Kasei Microsystems, Tokyo, Japan ; Ishikawa, A. ; Tomioka, K. ; Hara, S.
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A 455 KHz IF filter suitable for AMPS cellular telephone applications has been developed in a 1.2 μm CMOS technology. The design is based on interspersion of repeated AGC and leapfrog gm -C stages. Including RSSI circuitry, the active area is 17 mm2. It draws 6.5 mA from a single ended 5 V supply. Measured results confirm a dynamic range of 64 dB and an S/(N+D) of 40 dB, sufficient for AMPS cellular applications

Published in:

Custom Integrated Circuits Conference, 1994., Proceedings of the IEEE 1994

Date of Conference:

1-4 May 1994