NTE1419 Integrated Circuit Head Amp Circuit for VCR Features: D Video Signal Pre−Amplifier Circuit D Filter Amplifier Circuit D Mixer Amplifier Circuit D Head Switch Over Circuit D Supply Voltage, either 9V or 12V Absolute Maximum Ratings: (TA = +25°C, unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 530mW Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +150°C Electrical Characteristics: (TA = +25°C, VCC = 12V unless otherwise specified) Parameter Supply Current Symbol Test Conditions Typ Max Unit 26 − 44 mA 50.5 − 62.5 mA GV(1) 50.5 − 62.5 mA Voltage Gain (Mix Amp) GV(3) 10 − 14 dB Second Harmonic Distortion (H d Amp) (Head A ) D2(1) − − −40 dB D2(2) − − −40 dB Input Noise Voltage Vni(1) − − 2 µVrms Vni(2) − − −2 µVrms S 300 − − µA Voltage Gain (Head Amp) Sensitivity I1 Min GV(1) f = 4MHz, ni = 1mVpp−pp f = 1MHz, B.P.F Pin Connection Diagram 1 14 To Amp No. 1 Peaking Circuit 1µF Bypass Cap 2 13 Output Switch 1 Input Head 1 3 12 Video Head Switch Pulse Input GND 4 11 Mixer Amp Input Input Head 2 5 10 Mixer Amp Output 1µF Bypass Cap 6 9 Output Switch 2 Ripple Filter 7 8 To Amp No. 2 Peaking Circuit VCC 14 8 1 7 .785 (19.95) Max .300 (7.62) .200 (5.08) Max .100 (2.45) .600 (15.24) .099 (2.5) Min