mrf1570n Freescale Semiconductor, Inc, mrf1570n Datasheet - Page 13

• Manufacturer Part Number: mrf1570n
• Description: Rf Power Field Effect Transistors
• Manufacturer: Freescale Semiconductor, Inc

RF Device Data
Freescale Semiconductor
f = 135 MHz
MHz
135
155
175
V
f = 470 MHz
f
DD
= 12.5 V, I
2.8 +j0.05
3.9 +j0.34
2.4 - j0.47
f = 400 MHz
f = 175 MHz
f = 470 MHz
DQ
Z
Ω
in
= 0.8 A, P
Z
OL
Z
in
f = 400 MHz
*
Z
out
OL
0.65 +j0.42
1.01 +j0.63
0.71 +j0.37
*
= 70 W
Z
Notes:
Figure 32. Series Equivalent Input and Output Impedance
OL
Ω
*
f = 135 MHz
Input
Matching
Network
Impedance Z
Impedance Z
f = 175 MHz
Z
o
Z
Z
= 5 Ω
in
OL
* = Complex conjugate of the load
Z
MHz
= Complex conjugate of source
400
440
470
V
in
DD
f
impedance.
impedance at given output power,
voltage, frequency, and η
Z
OL
= 12.5 V, I
in
in
was measured with input terminated at 50 W.
was measured with output terminated at 50 W.
0.92 - j0.71
0.82 - j0.79
1.12 - j1.11
Device
Under Test
DQ
Z
Ω
in
= 0.8 A, P
Z
out
1.05 - j1.10
0.83 - j1.45
0.59 - j1.43
OL
= 70 W
Z
*
OL
Ω
D
Z
OL
f = 450 MHz
> 50 %.
*
*
Output
Matching
Network
f = 520 MHz
f = 520 MHz
MHz
450
470
500
520
V
DD
f
f = 450 MHz
Z
= 12.5 V, I
Z
o
in
= 5 Ω
MRF1570NT1 MRF1570FNT1
0.94 - j1.12
1.03 - j1.17
0.95 - j1.71
0.62 - j1.74
DQ
Z
Ω
in
= 0.8 A, P
out
0.61 - j1.14
0.62 - j1.12
0.75 - j1.03
0.77 - j0.97
= 70 W
Z
OL
Ω
*
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