TI LM3361AN

The LM3361A contains a complete narrow band FM demodulation system operable to less than 2V supply voltage. Blocks within the device include an oscillator, mixer, FM IF limiting amplifier, FM demodulator, op amp, scan control, and mute switch. The LM3361A is similar to the MC3361 with the following improvements: the LM3361A has higher voltage swing both at the op amp and audio outputs. It also has lower nominal drain current and a squelch circuit that draws significantly less current than the MC3361. Device pinout functions are identical with some slightly different operating characteristics.

• Functions at low supply voltage (less than 2V)
• Highly sensitive -3 dB limiting at 2.0 μv input (typical)
• High audio output (increased 6 dB over MC3361)
• Low drain current (2.8 mA typ., VCC = 3.6V)
• Minimal drain current increase when squelched
• Low external parts count