NTE1214
Integrated Circuit
AM Tuner System

Description:

Functions:

Features:

• RF Amplifier Stage:
  Good quieting sensitivity by means of low noise transistors and cascade connecting.
• Frequency Converter Stage:
  Splendid spurious characteristics by means of reduction of high frequency distortion in local oscillation and differential mixer.
• IF Amplifier Stage:
  Reasonable distortion by wide output dynamic range.
• Detector Stage:
  Low distortion even at deep modulation considering diagonal clip or negative clip.
• AGC Stage:
  Wide AGC range and good large input signal characteristics by AGC'd IF and RF amplifier stage.
• Signal Meter Driving Stage:
  Excellent linearity to input signal.
• 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).

Absolute Maximum Ratings: (T_A = +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: (T_A = +25°C, V_CC = 12V, f = 1000kHz, f_m = 400Hz unless otherwise specified)

Parameter	Symbol	Test Conditions	Min	Typ	Max	Unit
Current Dissipation	ICC	No Input	-	16	23	mA
Detector Output	vo	Input 23dB, 30% MOD	-27.5	-23.0	-	dBm
		Input 80dB, 30% MOD	-16	-13	-10	dBm
Signal-to-Noise Ratio	S/N	Input 23dB, 30% MOD	16	20	-	dB
		Input 80dB, 30% MOD	49	53	-	dB
Total Harmonic Distortion	THD	Input 80dB, 80% MOD	-	0.5	1.0	%
		Input 107dB, 30% MOD	-	0.3	1.0	%
Signal Meter Driving Output	VSM	Input 107dB, 30% MOD	0.40	0.44	0.48	V

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

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