NTE1812 Integrated Circuit Capstan Interface Circuit for VCR Description: The NTE1812 is an integrated circuit in a 20–Lead DIP type package designed for VCR capstan interface. Features: D The Functions Consist of: FG Amplifier 2H/4H/6H Automatic Detector FG Divider Gain Automatic Change Circuit D Supply Voltage: 5V Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.0V Power dissipation (TA = +70°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Electrical Characteristics: (VCC = 5V, TA = +25°C ±2°C unless otherwise specified) Parameter Symbol Test Conditions VREF = 2.5V Min Typ Max Unit 7 – 14 mA Circuit Current I18 FG Amp Input Sensitivity S19 30 – – mV FG High–Level Frequency Dividing Output VOH17 4.6 – – V FG Low–Level Frequency Dividing Output VO17 – – 4.0 V 3.3 – – V A/B High–Level Output VOHA, B A/B Low–Level Output VOLA, B – – 0.4 V S16 3.0 – – V S(MODE) 3.0 – – V OP Amp. 3 High–Level Output VOH11 3.8 – – V OP Amp. 3 Low–Level Output VOL11 – – 1.1 V Total Offset OP. Amp. NTSC 2H VO(offset)2 – – 30 mV Total Offset OP. Amp NTSC 6H VO(offset)6 – – 30 mV GV2 –4 – +2 dB Playback CTL Input Sensitivity Mode Select Sensitivity Record/Playback PAL/MTSCX 1/2, C, A, B OP. Amp. 2 Gain –I = 2mA Note 1. Operating Supply Range VCC(opr) = 4.5V to 5.5V Pin Connection Diagram Mode Select B 1 20 Mode Select A GND 2 Mode Select C 3 19 Cap FG Input 18 VCC Mode Select x 1/2 4 17 Cap FG Output PAL/NTSC Select 5 16 PB Control Input B Output 6 15 FG Divide Select A Output 7 14 Memory Cap Error Input 8 13 Rec 2/4/6H Select Reference Input 9 12 Rec/PB Select OP Amp Input 10 20 11 Cap Error Output 11 .339 (8.6) 1 10 1.063 (27.0) Max .400 (10.16) .200 (5.08) Max .100 (2.54) .100 (2.54) Min