RX3140 ic equivalent, rx3140 low power if receiver ic.
u u u u u u u u u u Extremely low power operation with power-down feature Built-in crystal oscillator for mixer local oscillator Mixer input frequency: 10 — 50 MHz Quadra.
and incorporates a 2-level FSK demodulator consisting of a quadrature FM demodulator, on-chip bit-rate filter, and 1-bit.
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