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даташит BH4126FV PDF ( Datasheet )

BH4126FV Datasheet Download - Rohm

Номер произв BH4126FV
Описание Wide band IF detector for RF remote control units
Производители Rohm
логотип Rohm логотип 



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BH4126FV Даташит, Описание, Даташиты
Communication ICs
BH4126FV
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 20MHz to 300MHz.
3) Equipped with a battery power saving function.
4) Fast RSSI response.
5) High FM detection sensitivity. (21.2mV / kHz)







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BH4126FV Даташит, Описание, Даташиты
Communication ICs
!Block diagram
IF input
FM detector
output
BH4126FV
IF output
RSSI
VCC
16 15 14 13 12 11 10
9
VCC
Quadrature
DET.
RSSI
Local OSC.
IF
VCC
1 23 45 67 8
Local
Battery save
VCC
!Absolute maximum ratings (Ta=25°C, for measurement circuit)
Parameter
Symbol
Limits
Power supply voltage
Power dissipation
VCC
PD
7.0
350 *1
Storage temperature
Tstg -55~+125
*1 Reduced by 3.5 mW for each increase in Ta of 1˚C over 25˚C.
Unit
V
mW
˚C
!Operating range
Parameter
Operating power supply voltage
Operating temperature
Symbol
VCC
Topr
Limits
2.3~5.5
-40~+85
Unit
V
˚C







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BH4126FV Даташит, Описание, Даташиты
Communication ICs
!Pin descriptions
Pin No.
Function
Local oscillator pin (base)
Connect crystal resonator
1 and capacitor
BH4126FV
Internal peripheral circuit
VCC
DC voltage(V)
VCC - 0.6
Local oscillator pin (emitter)
2 Connect capacitor or input local signal
from external oscillator
1
2
To MIXER
VCC
Battery save pin
"Pin 3 voltage" 0.2 : Battery save
3 2 V "Pin 3 voltage" VCC : Active
30k
3
-
Mixer output pin
Connect ceramic filter
Output impedance: 330
4
VCC
270
4
VCC - 1.5
GND pin
5
GND for IF stages and FM detection stages
GND










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