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
FElectrical
characteristics (unless otherwise noted, Ta = 25_C, V
CC
= 3.0V)
Signal source: f
IN (MIX)
= 254.4MHz, f
IN (LO)
= 243.2MHz, 100dBµV, f
IN (IF)
= 11.2MHz
AC level to be indicated by termination
BH4127FV
539