NJM3359

The NJM3359 is designed as a low power narrow band FM detector integrated circuit for FM dual conversion of communication equipment. It includes oscillator, limiting amplifier, AFC circuit, quadreture detect, operational amplifier, squelch circuit, scan-control and muting switch.

NJM3359 has five features. (1)Low operating current which would be 3.6mA typ at V+=6V. (2)Input limiting voltage which would be 2.0uVrms typ at -3dB. (3)Minimum other parts. (4)Package outline. (5)Bipolar technology. Those are all the main features.

Some absolute maximum ratings of NJM3359 have been concluded into several points as follow. (1)Its supply voltage would be 12V. (2)Its input voltage would be 1.0V. (3)Its muting function would be from -0.7V to 12V. (4)Its operating temperature range would be from -20°C to 75°C. (5)Its storage temperature range would be from -40°C to 125°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of NJM3359 are concluded as follow. (1)Its operating current which would be typ 3.6mA and max 6.0mA for squelch OFF and would be typ 5.4mA and max 7.0mA for squelch ON. (2)Its input sensitivity would be typ 8.0uVrms. (3)Its input limitting voltage -3dB would be typ 2.0uVrms. (4)Its mixer voltage gain would be typ 33dB. (5)Its mixer intercept point would be typ -1.0dBm. (6)Its mixer input capacitance would be typ 2.2pF. (7)Its mixer input resistance would be typ 3.6kohms. (8)Its recovered audio output voltage would be min 450mVrms and typ 700mVrms. (9)Its detector center frequency slope would be typ 0.3V/kHz. (10)Its AFC center frequency slope would be typ 12V/kHz. (11)Its filter gain would be min 40dB and typ 51dB. (12)Its scan control current would be typ 0.01uA and max 1.0uA for high and would be min 2.0mA and typ 2.4mA for low. (13)Its mute switch impedance would be typ 5.0 and max 10 for high and would be typ 1.5M. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!