Communication ICs Wide band IF / waveform rectifier IC for infrared reception and RF remote control units BH4100FV The BH4100FV is an IC with an internal wide band IF amplifier and waveform rectifying circuit, ideal for infrared light reception, particularly in remote control operations such as remote keyless entry systems (RKE). The 14-pin SSOPBB14 package makes this product ideal for sets where compact size is required. Applications Keyless vehicle entry, portable terminals Features 1) Low current dissipation (4mA typ.). 2) Accommodates infrared light reception ranging from 1kbps to 4Mbps. 3) Accommodates remote control units (keyless entry) using the ASK system. Block diagram 68 4) Short output pulse rise and fall times (5ns typ.). 5) Variable input amplifier gain. 6) Variable output comparator hysteresis. Communication ICs BH4100FV FAbsolute maximum ratings (Ta=25_C, for measurement circuit) FRecommended operating conditions FElectrical characteristics (unless otherwise noted, Ta=25_C, VCC=5V) 69 Communication ICs Pin descriptions 70 BH4100FV Communication ICs BH4100FV Measurement circuit 71 Communication ICs Application example External dimensions (Units: mm) 72 BH4100FV