TAT8857A1H Ver la hoja de datos (PDF) - TriQuint Semiconductor
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TAT8857A1H Datasheet PDF : 12 Pages
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TAT8857A1H
CATV Doubler – Hybrid RFIC
Detailed Device Description (contd.)
For 24 V operation, select values for the resistor
divider network (R18,R19) that will yield the
desired gate voltage (Vgate).
R18 should be restricted to 2.7K Ohms or less to
prevent gate leakage currents in the output FET
from affecting Vgate.
Do not put any capacitance on Vgate as this
could result in a turn-on over-voltage condition
that could damage the output FET.
J1
+24v
L20 910nH
Vbias
GND
C24
.033uF
C25
.033uF
C13 0.01uF
C15 2.2pF
0 C11 0.01u
16
BIAS 2A
UPPER A
15
L11
470nH
L13
R20
33
R13
L15
9nH
R15
43
C17
0.5pF
R18
2.7K
Vgate
R19
2K
14
1
13
GATE A
8D57F3 12
GATE B
11
27nH
1.3k
R11 18
R12 18
L19 600
1
2
Vgate
L17
8.2nH
L18
T2
2 to 1
2 BALUN
OUT1 IN 1
L30
3.9nH
C2
.01uF
SEC PRI
3
OUT2 GND 4
MABA-007681
-CT2010
Vbias
C22
RF
OUT
Evaluation Board PCB Information
TriQuint PCB 1077901 Material and Stack-up 24 V
1 oz. Cu top layer
0.031 ± 0.005
Finished Board
Thickness
FR402
εr=4.3 typ.
1 oz. Cu bottom layer
TriQuint PCB 50-0191 Material and Stack-up 12 V
1 oz. Cu top layer
0.062 ± 0.005
Finished Board
Thickness
FR402
εr=4.3 typ.
1 oz. Cu bottom layer
Data Sheet: Rev. B 06/30/13
© 2013 TriQuint
- 10 of 12 -
3.000"
2.000"
2.960"
1.960"
Disclaimer: Subject to change without notice
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