Click to expand full text
Video ICs
Single chip Hi-Fi audio signal processor
BH7801BK
The BH7801BK incorporates the functions for a VHS audio signal processing system on a single chip. The circuits on the chip are a peak-noise reduction processor (PNR), an FM modulator / demodulator circuit, an I / O switcher, an automatic FM detector circuit, an FM bandpass filter, and a regulator circuit. Applications • VCRs Features • 1) Operates off dual ± power supply which allows a large reduction in the number of coupling capacitors required. A built-in regulator makes it easy to construct a power supply system. 2) A two-line I2C BUS control decoder circuit is provided, allowing the various IC modes to be set using serial control. 3) A four line input switcher is included (tuner, BS, and line 1 / 2).