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MC13028A Datasheet(PDF) 1 Page - Motorola, Inc |
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MC13028A Datasheet(HTML) 1 Page - Motorola, Inc |
1 / 20 page Device Operating Temperature Range Package ORDERING INFORMATION MC13028AD TA = – 25° to +70°C SO–16 MC13028A SEMICONDUCTOR TECHNICAL DATA C–QUAM AM STEREO ADVANCED WIDE VOLTAGE IF and DECODER for E.T.R. RADIOS Order this document by MC13028A/D D SUFFIX PLASTIC PACKAGE CASE 751B (SO–16) 1 16 P SUFFIX PLASTIC PACKAGE CASE 648 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 Stereo Threshold Adjust AGC Bypass Filter IF Feedback Bypass IF Signal Input Gnd Stereo Indicator Drive 1.0 V Reference Blend Right Channel Output Left Channel Output Loop Filter VCO Output VCC Pilot Signal Input Pilot Q Detector Output Pilot I Detector Output 1 16 PIN CONNECTIONS MC13028AP DIP–16 1 MOTOROLA ANALOG IC DEVICE DATA Advanced Wide Voltage IF and C-QUAM® AM Stereo Decoder The MC13028A is a third generation C–QUAM stereo decoder targeted for use in low voltage, low cost AM/FM E.T.R. radio applications. Advanced features include a signal quality detector that analyzes signal strength, signal to noise ratio, and stereo pilot tone before switching to the stereo mode. A “blend function” much like FM stereo has been added to improve the transition from mono to stereo. The audio output level is adjustable to allow easy interface with a variety of AM/FM tuner chips. The external components have been minimized to keep the total system cost low. • Adjustable Audio Output Level • Stereo Blend Function • Stereo Threshold Adjustment • Operation from 2.2 V to 12 V Supply • Precision Pilot Tone Detector • Forced Mono Function • Single Pinout VCO • IF Amplifier with IF AGC Circuit • VCO Shutdown Mode at Weak Signal Condition The purchase of the Motorola C–QUAM® AM Stereo Decoder does not carry with such pur- chase any license by implication, estoppel or otherwise, under any patent rights of Motorola or others covering any combination of this decoder with other elements including use in a radio receiver. Upon application by an interested party, licenses are available from Motorola on its patents applicable to AM Stereo radio receivers. Representative Block Diagram This device contains 679 active transistors. 8 7 6 5 4 3 2 1 9 10 11 12 13 14 15 16 Reg AGC Signal Quality Detector Pilot Tone Detector B 8 VCO AM Stereo Decoder IF Amp © Motorola, Inc. 1996 Rev 2 |
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