BA4116FV

Communication ICs FM IF detector for cordless phones BA4116FV The BA4116FV is an IC with mixing circuit, IF circuit, FM detector circuit, RSSI circuit, and noise detector circuit. As it can operate at low voltages, it is ideal for use in cordless phones. FApplications Cordless phones, amateur short wave radios, and other portable wireless equipment FFeatures 1) Input frequencies of 10MHz to 150MHz can be accommodated. 2) Low-voltage operation. (1.8 to 5.5V) 3) Excellent temperature characteristic. 4) High sensitivity; 12dB SINAD sensitivity = 8dBµVEMF (50 Ω) 5) High intercept point. (–11dBm) 6) Small package used. (0.65mm pitch) FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 52 Communication ICs FBlock diagram BA4116FV 53 Communication ICs FPin descriptions BA4116FV 54 Communication ICs BA4116FV 55 Communication ICs BA4116FV 56 Communication ICs BA4116FV FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 2.0V, fIN (Mix) = 21.7MHz, fIN (IF) = 450kHz, ∆f = ±1.5kHzdev, fm = 1kHz, all AC levels open (EMF) display) 57 Communication ICs FMeasurement circuit BA4116FV 58 Communication ICs FApplication example BA4116FV 59 Communication ICs FAttached components BA4116FV FDetermining the filter amplifier constant (multi-layer recovery band pass filter) f0: Center frequency Q: Center frequency f0 / band width BW A0: I / O gain The reference resistance R0 is determined as C1 = C2 = C0. R0 = 1 / 2πf0 S C0...