BCR400W_07 INFINEON [Infineon Technologies AG], BCR400W_07 Datasheet - Page 6

• Manufacturer Part Number: BCR400W_07
• Description: Active Bias Controller
• Manufacturer: INFINEON [Infineon Technologies AG]

RF transistor controlled by BCR400
RF IN
BCR 400
1
2
RX/TX antenna switch, compatible to control logic
and working at wide battery voltage range
TX
C
contr.
1
3
4
+
RX
TX
V
S
R
C
RF-Transistor
ext.
C
Antenna
2
V
RF OUT
EHA07217
drop
BCR 400
1
2
6
Be aware that BCR400 stabilized
bias current of transistors in an active
control loop
In order to avoid loop ascillation
(hunting),
time constants must be chosen
adequately, i.e. C1 >= 10 x C2
4 /
4
3
R
ext
= 100 - 220
+
RX
V
S
EHA07218
> 2.7 V
BCR400W
2007-05-29