PTFA080551E
PTFA080551F
Confidential, Limited Internal Distribution
Thermally-Enhanced High Power RF LDMOS FETs
55 W, 869 – 960 MHz
Description
The PTFA080551E and PTFA080551F are 55-watt LDMOS FETs
designed for EDGE and CDMA power amplifier applications in the
869 to 960 MHz band. Features include input matching and thermally-
enhanced packages with slotted or earless flanges. Manufactured
with Infineon's advanced LDMOS process, these devices provide
excellent thermal performance and superior reliability.
PTFA080551E
Package H-36265-2
PTFA080551F
Package H-37265-2
Three-carrier CDMA2000 Performance
V
DD
= 28 V, I
DQ
= 450 mA, ƒ = 960 MHz
Features
•
•
-35
Broadband internal matching
Typical EDGE performance
- Average output power = 26 W
- Gain = 18 dB
- Efficiency = 44%
Typical CW performance
- Output power at P–1dB = 75 W
- Gain = 17 dB
- Efficiency = 67%
Integrated ESD protection: Human Body Model,
Class 2 (minimum)
Excellent thermal stability, low HCI drift
Capable of handling 10:1 VSWR @ 28 V, 55 W
(CW) output power
Pb-free and RoHS compliant
40
35
Adj. Ch. Power Ratio (dBc)
Efficiency
-40
-45
Drain Efficiency (%)
30
25
20
15
10
5
0
29
31
33
35
37
39
41
43
•
ACP Low
ACP Up
ALT Up
-50
-55
-60
-65
-70
•
•
•
•
Output Power, Avg. (dBm)
RF Characteristics
EDGE Measurements
(not subject to production test—verified by design/characterization in Infineon test fixture)
V
DD
= 28 V, I
DQ
= 450 mA, P
OUT
= 26 W AVG, ƒ = 959.8 MHz
Characteristic
Error Vector Magnitude
Modulation Spectrum @ 400 kHz
Modulation Spectrum @ 600 kHz
Gain
Drain Efficiency
All published data at T
CASE
= 25°C unless otherwise indicated
Symbol
EVM (RMS)
ACPR
ACPR
G
ps
Min
—
—
—
—
—
Typ
2.5
–60
–75
18
44
Max
—
—
—
—
—
Unit
%
dBc
dBc
dB
%
η
D
*See Infineon distributor for future availability.
ESD:
Electrostatic discharge sensitive device—observe handling precautions!
Data Sheet
1 of 11
Rev. 04.1, 2016-06-16
PTFA080551E
PTFA080551F
Confidential, Limited Internal Distribution
Typical Performance
(data taken in a production test fixture)
Edge EVM and Modulation Spectrum
vs. Quiescent Current
V
DD
= 28 V, ƒ = 959.8 MHz, P
OUT
= 22 W
2.1
1.9
-20
0
55
EDGE Modulation Spectrum Performance
V
DD
= 28 V, I
DQ
= 450 mA, ƒ = 959.8 MHz
Modulation Spectrum (dBc)
EVM
-30
-40
-50
Modulation Spectrum (dBc)
Efficiency
Drain Efficiency (%)
-20
-40
-60
-80
45
35
EVM RMS (avg. %)
.
1.7
1.5
1.3
1.1
0.9
0.7
0.35
400 kHz
-60
-70
400 kHz
25
15
5
600 kHz
0.40
0.45
0.50
0.55
-80
600 kHz
32
34
36
38
40
42
44
46
-90
0.60
-100
Quiescent Current (A)
Output Power (dBm)
EDGE EVM Performance
V
DD
= 28 V, I
DQ
= 450 mA, ƒ = 959.8 MHz
10
8
6
4
2
0
32
34
36
38
40
42
44
46
55
45
Intermodulation Distortion vs. Output Power
(as measured in a broadband circuit)
V
DD
= 28 V, I
DQ
= 450 mA, ƒ
1
= 959 MHz, ƒ
2
= 960 MHz
-20
-30
EVM RMS (avg. %)
.
Drain Efficiency (%)
Efficiency
35
25
15
5
IMD (dBc)
-40
-50
3rd Order
5th
-60
EVM
7th
-70
30
33
36
39
42
45
48
Output Power (dBm)
Output Power, Avg. (dBm)
Data Sheet
3 of 11
Rev. 04.1, 2016-06-16
PTFA080551E
PTFA080551F
Confidential, Limited Internal Distribution
Typical Performance
(cont.)
Linear Broadband Performance
V
DD
= 28 V, I
DQ
= 600 mA, P
OUT
Avg = 44.39 dBm
IM3 vs. Output Power at Selected Biases
V
DD
= 28 V, ƒ
1
= 959, ƒ
2
= 960 MHz
51
-20
40
-30
Efficiency (%)
IMD (dBc)
300 mA
450 mA
49
48
47
46
45
20
-40
Efficiency
10
0
-10
-50
Return Loss
880
900
920
940
-20
-60
29
31
33
35
37
39
41
43
45
47
44
860
-30
960
Output Power, Avg. (dBm)
Frequency (MHz)
Power Sweep
V
DD
= 28 V, ƒ = 960 MHz
Gain & Efficiency vs. Output Power
V
DD
= 28 V, I
DQ
= 600 mA, ƒ = 960 MHz
19
21
70
60
I
DQ
= 600 mA
Power Gain (dB)
18
20
19
Gain
50
40
18
17
16
15
30
17
I
DQ
= 450 mA
16
I
DQ
= 300 mA
Efficiency
20
10
15
36
38
40
42
44
46
48
50
14
36
38
40
42
44
46
48
50
Output Power (dBm)
Output Power (dBm)
Data Sheet
4 of 11
Rev. 04.1, 2016-06-16
Drain Efficiency (%)
Gain (dB)
Gain, Return Loss (dB)
600 mA
50
Gain
30
PTFA080551E
PTFA080551F
Confidential, Limited Internal Distribution
Typical Performance
(cont.)
Output Power
(P–1dB)
vs. Drain Voltage
I
DQ
= 600 mA, ƒ = 960 MHz
IS-95 CDMA Performance
V
DD
= 28 V, I
DQ
= 450 mA, ƒ = 960 MHz
T
CASE
= 25°C
T
CASE
= 90°C
Efficiency
51
50
45
40
0
Output Power (dBm)
49
48
47
46
45
24
26
28
30
32
Drain Efficiency (%)
35
30
25
20
15
10
5
0
29
31
33
35
37
39
41
43
-20
-30
ACP FC – 0.75 MHz
-40
-50
-60
-70
ACPR FC + 1.98 MHz
-80
-90
Drain Voltage (V)
Output Power, Avg. (dBm)
Bias Voltage vs. Temperature
Voltage normalized to typical gate voltage,
series show current
0.778 A
1.03
1.55 A
3.11 A
3.88 A
4.66 A
5.44 A
0.99
0.98
0.97
0.96
-20
0
20
40
60
80
100
6.22 A
7.00 A
Normalized Bias Voltage (V)
1.02
1.01
1.00
Case Temperature (°C)
Data Sheet
5 of 11
Rev. 04.1, 2016-06-16
Adj. Ch. Power Ratio (dBc)
-10
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