NTE749 Integrated Circuit TV Video IF Amp Features: D High Power Gain: 46dB (Typ) f = 58MHz D Wide AGC Range: 60dB (Min) D Low Reverse Transfer Admittance: yr ≤ –1.0µ (Typ) D Nearly Constant Input and Output Admittance over AGC Range D Control Signal Available for Delayed Forward AGC of Tuner D Control Signal Available for Delayed of FET Tuner D Either Positive or Negative Going Video Signals Absolute Maximum Ratings: Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Output Voltage, V7, V8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Input Voltage, V1, V2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Vp–p AGC Input Voltage, V6, V10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Gate Input Voltage, V5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10, –20V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW Derated Above TA = 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0mW/°C Min. Load Resistance, RL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4kΩ Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Electrical Characteristics: (VCC = 12V, TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Supply Current ICC – 27 31 mA Output Current IOUT – 5.7 – mA Power Dissipation PD – 324 372 mW Power Gain Gp f = 58MHz 42 46 – dB Noise Figure NF f = 58MHz,Rg = 50Ω – 8.5 – dB 0dB AGC 350 – – mVrms –30dB AGC 200 – – Maximum Output Voltage VOM Electrical Characteristics (Cont’d): (VCC = 12V, TA = +25°C unless otherwise specified) Parameter Symbol AGC AGC Range RF–AGC Min Typ Max Unit AGC 60 – – dB V12(Max) – 8.2 – V V12(Min) – 0.2 – RF–AGC At Operating Range – 10 – dB f = 58MHz – 0.8 – mΩ – 3.4 – – 155 – – 850 – – 220 – mΩ – –135 – deg ∆GP Power Gain Variations Input Admittance gi Input Acceptance bi Output Admittance go Output Acceptance bo Forward Transfer Admittance yf Test Conditions f = 58MHz f = 58MHz 0dB AGC µΩ Phase Angle of Forward Transfer Admittance <yf –30dB AGC – –95 – deg Reverse Transfer Admittance yr f = 58MHz – <1.0 – µΩ Pin Connection Diagram IF Input 1 14 IF AGC Filter Bypass 2 GND 3 13 RF AGC Delay Voltage 12 RF AGC Output 11 VCC GND 4 Keyer Pulse 5 10 Video & Ref DC Inputs Video & Ref DC Inputs 6 9 AGC Storage Capacitor 8 IF Output IF Output 7 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