The RCA CA3075 is an integrated circuit that provides, in a single monolithic chip, an FM IF subsystem for Communications and High-Fidelity Receivers. This device consists of a multistage IF amplifier-limiter section with a zener-regulated power supply, an FM detector stage, and an AF preamplifier section. The three-stage, emitter-follower-coupled IF amplifier section provides a 60-dB typ. voltage gain at an operating frequency of 10.7MHz and features, because of its transistor constant-current sink, and output stage with exceptionally good limiting characteristics. The FM detector section, which utilizes a differential peak-detection circuit, requires only a single coil in the associated outboard detector circuit, hence, tuning the detector circuit is a simple procedure.
