NTE1242 Integrated Circuit FM/AM IF Amp, AM Converter Features: D Separate AM and FM Circuitry D Ceramic Filters Can be Used. D Same AM and FM Detection Output Level Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.6V Circuit Voltages, V8–7, V15–6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40mA Power Dissipation (TA = +75°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Electrical Characteristics: (VCC = 8V, TA = +25°C unless otherwise specified) Parameter Symbol Total Circuit Current Itot Detector Output Voltage AM–IF VO FM–IF Circuit Voltages Test Conditions Min Typ Max Unit 15 24 34 mA Vi = 22dBµV, f = 1MHz, fm = 400Hz, 30% MOD 2.4 6.0 9.5 mV Vi = 33dBµV, fm = 400Hz, fd = 22.5kHz, f = 10.7MHz 3.8 7.0 10.0 mV V3–2 – 3.0 – V V7–6 – 1.7 – V V10 = 1.0V – – 30 mV V10 = 1.4V – 66 – mV V4–8 – 120 – mV V4–9 – 240 – mV V15–4 – 62 – mV V12–4 Pin Connection Diagram FM IF Output 1 16 Bypass GND 2 15 OSC Feedback 1st IF Output 3 14 OSC Tank 13 AM Input (Converter) VCC 4 2nd IF Input 5 12 Converter Output GND 6 11 2nd IF (AM) Input Bypass 7 10 AGC Bypass 2nd IF Output 8 16 9 2nd IF (AM) Output 9 .260 (6.6) Max 1 8 .785 (19.9) Max .300 (7.62) .200 (5.08) Max .245 (6.22) Min .100 (2.54) .700 (17.7)