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| NTE1486 Integrated Circuit FM/AM Tuner System Description: The NTE1486 is an integrated circuit in a 16+2-Lead DIP type package designed for use in stereo applications. This high performance device integrates all the functions necessary for FM IF and detection by AM IF amplifiers. Functions: FM D IF Amplifier D Detector Circuit D Low Noise Audio Amplifier D Signal Meter Circuit D Center Meter Circuit D Muting Circuit D AFC Circuit AM D IF Amplifier D AGC Circuit Features: D Labor Saving and Miniaturization are Possible, since the FM IF Amplifier Detection and AM IF Amplifiers are Enclosed in the Same Package. D FM IF Amplifiers have High Stability due to the Adoption of the Full Balance Three Stage Direct Coupled Differential Amplifier. D Utilizes the Quadrature Detection Circuit. D High Sensitivity (Input limiting sensitivity: 15V Typ) D Large Detection Output: 450mVrms Typ @ 100% modulation D Low Distortion Factor: 0.04% Typ, when the double tuning detection coil is used D High Signal-to-Noise Ratio: 79dB Typ D Muting Circuit which does not Produce the Unbalance at Right or Left when Detuning. D Muting Attenuation is Large: 80dB Typ D AM Rejection Ratio is Good: 55dB @ 100dB Input D Signal-to-Noise Ratio of AM IF is Good: 50dB @ 64dB Input D AGC FOM of AM IF is Good: 48dB D Electrodynamic Range for the Input of the Signal Meter is Large: 43dB to 115dB Typ Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13V Power Dissipation (TA = +60C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 730mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C DC Electrical Characteristics: (TA = +25C, VCC = 12V, Non-Signal unless otherwise specified) Parameter AM IF Bypass (Pin1) AM IF Input (Pin4) FM IF Input DC Feedback (Pin6) FM IF Input DC Feedback (Pin7) FM IF Input (Pin8) Muting Control Voltage (Pin10) Reference (Pin12) AFC (Pin15) Audio Output (Pin16) Symbol V1 V4 V6 V7 V8 V10 V12 V15 V16 Test Conditions Min - - - - - - - - - Typ 2.7 0.7 1.9 1.9 1.9 5.4 5.6 5.6 5.6 Max - - - - - - - - - Unit V V V V V V V V V AC Electrical Characteristics: (VCC = 12V, Note 1 unless otherwise specified) Parameter Total Current Drain FM Limiting Sensitivity Recovered AF Voltage Total Harmonic Distortion Signal-to-Noise Ratio AM Rejection Ratio Muting Sensitivity Muting Attenuation Muting Bandwidth Meter Swing AM Recovered AF Voltage Total Harmonic Distortion Signal-to-Noise Ratio IF AGC Figure of Merit Input Impedance V02(AF) THD (S+N/N) AGC(FOM) Vin = Voltage difference from 84dB input, when 10dB output down Rin 55 - 44 - - 82 0.5 50 48 0.9 125 2.0 - - - mVrms % dB dB k Vin(lim) V01(AF) THD (S+N/N) AMR Vin(Mute) Mute(ATT) BW(Mute) V9 - 70 V9 - 100 Vin = 100dB, FM; 400Hz, f = 75kHz, AM; 1kHz, m = 0.3 V10 = 1.4V V17 = 2V V10 = 1.4V, Note 2 Vin = 70dB Vin = 100dB Vin = -3dB point from output voltage when 100dB input - 270 - 73 - 42 73 78 0.5 3.0 31 450 0.04 79 55 48 80 130 1.8 4.4 37 700 0.1 - - 53 - 220 - - dB mVrms % dB dB dB dB kHz V V Symbol I11 Test Conditions Vin = 100dB, Mute; ON Min - Typ 38.5 Max 56.2 Unit mA Note 1. Unless otherwise specified, test conditions are as follows: FM: f(IF) = 10.7MHz, f(MOD) = 400Hz, f = 75kHz, Vin = 100dB AM: f(IF) = 455kHz, f(MOD) = 400Hz, m = 0.3, Vin = 64dB Note 2. BW(mute) is tested under sampling of ALQ = 1.0%. Pin Connection Diagram Mute 17 AM IF Amp Filter 1 AM IF Output 2 AM IF AGC Input 3 AM IF Input 4 GND 5 FM Decouple 6 AM/FM Switch 7 FM IF Input 8 GND 18 16 Audio Output 15 AFC Output 14 Limiter Output 13 Quad Det Input 12 Quad Det Output 11 VCC 10 MPX Cont Output 9 Tune Meter Output 1.007 (25.5) Max .964 (24.4) 18 8 9 1 17 .291 (7.4) Max 16 .248 (6.3) .252 (6.4) .200 (5.08) 15 .188 (4.77) .020 (.508) .051 (1.29) .100 (2.54) Typ .009 (0.22) |
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