BH4127FV

Communication ICs IF detector IC for 900MHz spread spectrum cordless phones BH4127FV The BH4127FV is a mixer, IF amplifier, and FM detector IC developed for use with 900MHz spread spectrum cordless phones FApplications 900MHz spread spectrum cordless phones FFeatures 1) Built-in mixer circuit, IF circuit, RSSI circuit, and FM detector circuit. 2) Operates at mixer input frequencies ranging from 20 to 300 MHz. 3) Equipped with a battery save function. 4) FM detector circuit demodulates up to ±750kHzdev. 5) FM detector circuit demodulates up to 2.6Mbps. FAbsolute maximum ratings (Ta = 25_C, with the measurement circuit) FRecommended operating conditions 535 Communication ICs FBlock diagram 536 Communication ICs FPin descriptions BH4127FV 537 Communication ICs BH4127FV 538 Communication ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 3.0V) Signal source: fIN (MIX) = 254.4MHz, fIN (LO) = 243.2MHz, 100dBµV, fIN (IF) = 11.2MHz AC level to be indicated by termination BH4127FV 539 Communication ICs Signal source: fIN (IF) = 11.2MHz, ∆f = ±100kHz dev, fm = 1kHz AC level to be indicated by termination BH4127FV 540 Communication ICs FMeasurement circuit BH4127FV 541 Communication ICs FApplication example BH4127FV 542 Communication ICs FExternal dimensions (Units: mm) BH4127FV 543