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| NTE1425 Integrated Circuit Capstan Servo Control Circuit for VCR Features: D Phase Control Circuit D Speed Control Circuit D Capstan FG Divider Ratio Change Circuit D Sample Hold System Speed Control D Supply Voltage, Either 9V or 12V Absolute Maximum Ratings: (TA = +25C, unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470mW Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +150C Electrical Characteristics: (TA = +25C, VCC = 12V unless otherwise specified) Parameter Circuit Current Sensitivity (PG Amp In) (In) Reference Voltage Voltage High Level (S/H1) Voltage Low Level (S/H1) Sensitivity Output (FG Amp In) (FF 2 Switch) Reference Voltage Voltage High Level (S/H2) Voltage Low Level (S/H2) Symbol I1 S(1) S(2) VREF(1) VOH(1) VOL(1) S(3) S(4) VREF(2) VOH(2) VOL(2) Test Conditions Min 16 50 7 2.7 9 - 100 5 2.7 9 - Typ Max - - - - - - - - - - - 34 - - 3.7 - 600 - - 3.7 - 600 mV Unit mA mVo-p Vo-p V V mV mVp-p V V V Pin Connection Diagram (+) VCC SP:L/LP:H Switch Decouple VCC Equalization Network Bias Res (5.6k) Bypass Cap (0.1F) S & H Output (Speed Control) GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 From Capstan Frequency Generator From Video Head Servo Control Decoupled/Switched Recorded VCC PG Input Bypass Cap (0.33F) Bias Res (10k) Bypass Cap (0.1F) S & H Output (Speed Control) 16 9 .260 (6.6) Max 1 8 .785 (19.9) Max .200 (5.08) Max .245 (6.22) Min .300 (7.62) .100 (2.54) .700 (17.7) |
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