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| Datasheet File OCR Text: |
| NTE1557 Integrated Circuit FM/AM IF System Description: The NTE1557 is a monolithic integrated circuit in a 16-Lead DIP type package developed for the radio cassette tape recorder included AM/FM IF amplifier and detector. Functions: D AM Section: IF Amplifier with AGC Detector D Voltage Regulator for RF External Circuit D FM Section: IF Amplifier Quadrature Detector Post Amplifier Signal Meter Driver Circuit Features: D Suitable for Radio Cassette and Home Stereo D Wide Operating Supply Voltage Range (3.0V to 14V) D Low Quiescent Circuit Current D AM Section D Simplified Input Circuit IFT (Ceramic Filter Type) RF AGC Available D FM Section: High Limiting Sensitivity (33dB, Typ) Low Residual Noise (45dB at Vi = -10dB) Small Side Peak of Detuned Output Voltage Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Electrical Characteristics: (TA = +25C, VCC = 5.5V, unless otherwise specified) Parameter Quiescent Circuit Current Input Limiting Sensitivity Detector Output Voltage Total Harmonic Distortion AM Rejection Ratio Signal to Noise Ratio Signal Meter Output Residual Noise Muting Attenuation Quiescent Circuit Current Maximum Sensitivity Detector Output Voltage Total Harmonic Distortion Signal to Noise Ratio Signal Meter Output Input Impedance (Pin 16) Symbol ICC Vi(lim) VO THD AMR S/N VM VN M(att) ICC Vo THD S/N VM Ri Vi = 0 VO (Vi = 100dB) -3dB VI = 100dB Vi = 100dB Vi = 100dB Vi = 100dB Vi = 100dB VO (AF) (Vi = 100dB) VI = 37dB, Mute SW on Vi = 0 Vi = 74dB Vi = 74dB Vi = 100dB Vi = 74dB VI = 100dB Pin 16 0.8-0.9VDC Test Conditions Min 7 - 180 - 50 72 1.05 - - - - 45 - - 45 1.2 Typ 11 33 245 0.3 60 83 1.5 45 35 8 29 65 0.3 0.7 55 1.4 Max 16.5 38 310 1.0 - - 2.05 - - - - 85 2.0 3.5 - 1.6 2.8 Unit mA dB mV % dB dB V dB dB mA dB mV % % dB V k FM Section (f = 10.7MHz, fm = 1kHz, f = 75kHz) AM Section (f = 455kHz, fm = 1kHz, 30% Mod) Vi(sen) VO (AF) = 10mV 1.45 2.12 Pin Connection Diagram 1st IF Amp Input (FM) 1 1st IF Decouple (FM) 2 VCC (FM) 3 1st IF Amp Output (FM) 4 GND 5 2nd IF Amp Input (FM) 6 Voltage Regulator 7 Phase Shifter (FM) 8 16 1st IF Amp Input (AM) 15 AGC Decouple 14 2nd IF Amp Input (AM) 13 GND 12 Detector Output 11 VCC 10 Center Meter 9 FM Output 16 9 1 8 .870 (22.0) Max .200 (5.08) Max .260 (6.6) Max .100 (2.54) .700 (17.78) .099 (2.5) Min |
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