NTE1292 Datasheet, PDF (1/3 Pages) NTE Electronics – Integrated Circuit IF Amplifier and Detector

NTE1292
Integrated Circuit
IF Amplifier and Detector
Description:
The NTE1292 is a monolithic integrated circuit in a 14–Lead DIP type package specifically designed
for audio detection in TV and FM radio receivers. It incorporates an 8–stage limiting IF amplifier and
balanced detector plus a DC operated volume control.
Pin3 and Pin4 are connected to the collector and base of a transistor which may be used as an AF–
preamplifier or as a switch.
At Pin12 a zener–diode is accessible which can be used to stabilize the supply voltage of this inte-
grated circuit or the voltage of other circuit elements in the set.
Features:
D Electronic Attenuator: Replaces Conventional AC Volume Control
D Volume Reduction Range: 85dB Typ
D Sensitivity: 3dB Limiting Voltage 30µV Typ
D Excellent AM Rejection 68dB Typ at 10mV
D Audio Output Voltage: 1V Typ
D Wide Supply Voltage Range: V_CC = 6V to 18V
D Internal Zener Diode Regulator
D Very Low External Component Requirement
D Simple Detector Alignment: One Coil
Absolute Maximum Ratings:
Supply Voltage, V₁₁ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Volume Control Voltage, V₅ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4V
Zener Current, I₁₂ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
Transistor Collector Current, I₃ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Transistor Base Current, I₄ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Bias Resistance (Max), R_13–14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1kΩ
Operating Temperature Range, T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –15° to +70°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C