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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 = +25C 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 +70C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450mW Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Recommended Operating Conditions: (TA = +25C unless otherwise specified) Recommended Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V Electrical Characteristics: (TA = +25C, VCC = 12V, f = 1000kHz, fm = 400Hz unless otherwise specified)
Parameter Current Dissipation Detector Output Symbol ICC vo S/N Test Conditions No Input Input 23dB, 30% MOD Input 80dB, 30% MOD Signal-to-Noise Ratio Input 23dB, 30% MOD Input 80dB, 30% MOD Total Harmonic Distortion THD Input 80dB, 80% MOD Input 107dB, 30% MOD Signal Meter Driving Output VSM Input 107dB, 30% MOD Min - -27.5 -16 16 49 - - 0.40 Typ 16 -23.0 -13 20 53 0.5 0.3 0.44 Max 23 - -10 - - 1.0 1.0 0.48 Unit mA dBm dBm dB dB % % V
Note 1. 0dBm is defined as 0.775V, and in IF circuit 0dB is 1V 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 Converter Output 5 OSC Tank Circuit 6 Converter Input 7 3rd IF Amp Input 8
16 RF Amp DC Bypass 15 Tune Meter Output 14 AGC Bypass 13 3rd IF Amp Input Tune 12 Detector Output 11 IF System VCC 10 DC Return (Substrate) 9 2nd IF Amp Output
16
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)

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