AN3341SC

ICs for VCR AN3336SB 4-Head VCR Recording/Playback Amplifier IC s Overview The AN3336SB is a recording/playback amplifier IC for 4-head VCR. It includes RF-AGC, automatic tracking I/O, and envelope comparing circuit. 0.3±0.11 1 36 Unit : mm s Features Playback VCC = 5.0V, recording VCC = 12V Built-in RF-AGC circuit Built-in automatic tracking I/O circuit Built-in envelope comparing circuit 0.8 18 19 1.3±0.25 0.1 0.2 + – 0.05 0.1±0.1 0.5 8.4±0.30 11.93±0.30 36-Pin SSOP package (SSOP036-P-0450A) s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Pin name Head switching Envelope ON/OFF switching Ch 1 head amp. damping Ch 1 head amp. input Small-signal ground Ch 2 head amp. input Ch 2 head amp. damping Sub-ground Sub-ground Ch 3 head amp. damping Ch 3 head amp. input Small-signal ground Ch 4 head amp. input Ch 4 head amp. damping Rec. current amp. (LP) output Rec. feedback Rec. current amp. (SP) output Rec. VCC Pin No. 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Pin name Evelope detector capacitor for ch 3 and ch 4 Peaking for recording Automatic tracking output Automatic tracking detector capacitor Automatic tracking control Automatic tracking VCC Rec. Y–input Chroma output Sub-ground Sub-ground Sub-ground Recording C–input AGC output AGC detector capacitor Envelope detector capacitor for ch 1 and ch 2 Head amp. switching ENV output, recording bias Playback VCC 1.3±0.25 (0.28) 2.85±0.2 15.2±0.30 1 AN3336SB s Block Diagram PB 5...