NTE1214 Integrated Circuit AM Tuner System Description: The NTE1214 is a high integrated circuit in a 16–Lead DIP type package designed for use in the AM system of high grade receivers. This device contains most of the functions needed for AM receiving. Functions: D RF Amplifier D Frequency Counter D IF Amplifier D Detector D AGC D Signal Meter Driving Features: D RF Amplifier Stage: Good quieting sensitivity by means of low noise transistors and cascade connecting. D Frequency Converter Stage: Splendid spurious characteristics by means of reduction of high frequency distortion in local oscillation and differential mixer. D IF Amplifier Stage: Reasonable distortion by wide output dynamic range. D Detector Stage: Low distortion even at deep modulation considering diagonal clip or negative clip. D AGC Stage: Wide AGC range and good large input signal characteristics by AGC’d IF and RF amplifier stage. D Signal Meter Driving Stage: Excellent linearity to input signal. D Others: Stabilized biasing against supply voltage drifting over all stages. Particularly superior compensation circuit in IF amplifier. Less deterioration of gain, detector output, and distortion in low supply voltage range in order to get wide supply voltage range (7V* to 16V). * Needs to vary peripheral parts and its value of RF and local oscillator stage for the purpose of low supply voltage operation. Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Maximum Supply Voltage (Pin3, Pin11), VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Output Voltage (Pin4, Pin5), vo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24V Input Voltage (Pin2), vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 4V Supply Current (Pin3, Pin4, Pin5, Pin11), ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Flow–Out Current (Pin15), I15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA Allowable Power Dissipation (TA ≤ +70°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C Recommended Operating Conditions: (TA = +25°C unless otherwise specified) Recommended Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Electrical Characteristics: (TA = +25°C, VCC = 12V, f = 1000kHz, fm = 400Hz unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit – 16 23 mA Current Dissipation ICC No Input Detector Output vo Input 23dB, 30% MOD –27.5 –23.0 – dBm Input 80dB, 30% MOD –16 –13 –10 dBm Input 23dB, 30% MOD 16 20 – dB Input 80dB, 30% MOD 49 53 – dB Input 80dB, 80% MOD – 0.5 1.0 % Input 107dB, 30% MOD – 0.3 1.0 % Input 107dB, 30% MOD 0.40 0.44 0.48 V Signal–to–Noise Ratio S/N Total Harmonic Distortion THD Signal Meter Driving Output VSM Note 1. 0dBm is defined as 0.775V, and in IF circuit 0dB is 1µV of IHF input at the use of IHF dummy antenna. Pin Connection Diagram RF Amp DC Bypass 1 RF Tune 2 Converter VCC 3 RF Amp Output 4 16 RF Amp DC Bypass 15 Tune Meter Output 14 AGC Bypass 13 3rd IF Amp Input Tune Converter Output 5 12 Detector Output OSC Tank Circuit 6 11 IF System VCC 10 DC Return (Substrate) Converter Input 7 3rd IF Amp Input 8 9 2nd IF Amp Output 16 9 .260 (6.6) Max 1 8 .300 (7.62) .785 (19.9) Max .200 (5.08) Max .245 (6.22) Min .100 (2.54) .700 (17.7)