NTE787
Integrated Circuit
AM Receiver Subsystem
For Applications
in a variety of AM broadcast and communications receivers and applications
requiring an array of amplifiers.
Description:
The NTE787, a monolithic integrated circuit, is an AM subsystem that provides the converter, IF ampli-
fier, detector, and audio preamplifier stages for an AM receiver. It also provides internal AGC for the
first IF amplifier stage, delayed AGC for an optional external RF amplifier, a buffer stage to drive a
tuning meter, and terminals facilitating the optional use of a tone control.
This device features four independent transistor amplifiers, each incorporating internal biasing for
temperature tracking. These amplifiers are particularly useful in general鈥損urpose amplifier, oscillator,
and detector applications in a wide variety of equipment designs.
The NTE787 utilizes a 16鈥揕ead DIP package and operates over an ambient temperature range of
鈥?0擄 to +85擄C.
Features:
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Excellent overload characteristics
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AGC for IF amplifier
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Buffered output signal for tuning meter
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Internal Zener diode provides voltage regulation
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Two IF amplifiers stages
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Low鈥搉oise converter and first IF amplifier
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Low harmonic distortion (THD)
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Delayed AGC for RF amplifier
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Terminals for optional inclusion of tone control
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Operates from wide range of power supplies: V+ = 6 to 16 volts
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Optional AC and/or DC feedback on wide鈥揵and amplifier
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Array of amplifiers for general鈥損urpose applications
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Suitable for use with optional external RF stage, either MOS or bipolar
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