BH4126FV PDF Datasheet
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Description
This is Wide band IF detector for RF remote control units. BH4126FV
Communication ICs
Wide band IF detector for RF remote control units
BH4126FV
The BH4126FV is an IC equipped with internal mixer, IF amplifier, and FM detector circuits, developed for use with RF remote control units.
!Applications Keyless entry
!Features 1) Equipped with internal mixer, IF, RSSI, and FM detection circuits. 2) Can be operated at mixer input frequencies ranging from 20MH- to 300MHz.
3) Equipped with a battery power saving function. 4) Fast RSSI response. 5) High FM detection sensitivity. (21.2mV , kHz)
BH4126FV
Communication ICs
!Block diagram
VCC IF input FM detector output RSSI IF output
16
15
14
13
12
11
10
9
VCC
Quadrature DET.
RSSI
IF Local OSC.
VCC
1
2
3
4
5
6
7
8
Local
Battery save
VCC
!Absolute maximum ratings (Ta=25°C, for measurement circuit)
Parameter Power supply voltage Power dissipation Storage temperature Symbol VCC PD Tstg Limits 7.0 350
*1
Unit V mW ˚C
-55~+125
*1 Reduced by 3.5 mW for each increase in Ta of 1˚C.