U2860B-MFPY

Overview

The U2860B-MFPY is a dual-channel FM sound demodulator IC in a 14-SOIC package. It integrates two alignment-free PLL FM demodulators, limiter amplifiers, and audio output stages for TV systems supporting standards from 4.5 MHz to 6.5 MHz. The device operates on a 4.5V to 9V supply with a typical current of 33 mA. Key features include automatic squelch for the second channel, simultaneous mute control, and low harmonic distortion (0.5% typ). It processes intercarrier signals via ceramic filters and provides AC-coupled audio outputs.

Feature Summary

• Dual-channel alignment-free PLL FM demodulators covering 4.5 MHz to 6.5 MHz
• Automatic squelch function for the second sound channel to prevent stereo decoder errors
• Integrated mute switch controlling both channels simultaneously
• 7-stage limiter amplifier ensuring high input sensitivity and AM suppression

Applications

• Television systems (TV)
• Video Cassette Recorders (VCR)
• Multimedia applications

Procurement Notes

Verify the manufacturer origin, as the datasheet identifies Atmel Corporation while the brand field lists Microchip Technology. Confirm the package type is SO14 tube and check RoHS compliance status. Ensure the specific suffix 'MFPY' corresponds to the tube packaging variant rather than the tape-and-reel version.

Selection Notes

Select this component for designs requiring dual-channel FM demodulation with minimal external components. It supports multiple TV standards (M, B/G, I, D/K) without alignment. Consider the 4.5V to 9V supply range and the need for external ceramic bandpass filters at the SIF inputs. Verify thermal resistance requirements for the SO14 surface mount package.

Part Context

This part belongs to the U2860B-M series of dual-channel FM sound demodulators. The 'MFPY' suffix indicates a Pb-free package in a standard tube configuration, distinct from the 'MFPG3G' tape-and-reel variant. The device utilizes an advanced bipolar process technology originally developed by Atmel.

Replacement Considerations

The U2860B-MFPG3G is a direct functional substitute with identical electrical characteristics, differing only in packaging format (tape and reel instead of tube).