1. Product profile
1.1 General description
100 W LDMOS power transistor for base station applications at frequencies from
3400 MHz to 3600 MHz.
[1] PL(M) stands for peak output power.
[2] Single carrier N-CDMA with pilot, paging, sync and 6 traffic channels (Walsh codes 8 - 13). P AR = 9.7 dB at
0.01 % probability on the CCDF. Channel bandwidth is 1.23 MHz.
[3] Measured within 30 kHz bandwidth.
1.2 Features and benefits
Typical 1-carrier N-CDMA performance (Single carrier N-CDMA with pilot, paging,
sync and 6 traffic channels [Walsh codes 8 - 13]. PAR = 9.7 dB at 0.01 % probability
on the CCDF. Channel band width is 1.23 MHz) at a frequen cy of 3400 MHz, 3500 MHz
and 3600 MHz, a supply voltage of 28 V and an IDq of 1050 mA:
Qualified up to a maximum VDS operat ion of 32 V
Integrated ESD protection
Excellent ruggedness
High efficiency
Excellent thermal stability
Designed for broadband operation
Internally matched for ease of use
Low gold plating thickness on leads
Compliant to Directive 2002/95/EC, rega rd in g Re stri ctio n of Hazard ou s Sub stances
(RoHS)
BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
Rev. 2 — 24 October 2011 Product data sheet
Table 1. Typical performance
Typical RF performance at Tcase =25
C in a class-AB production test circuit.
Mode of operation f VDS PL(AV) PL(M) [1] GpDACPR885k ACPR1980k
(MHz) (V) (W) (W) (dB) (%) (dBc) (dBc)
1-carrier N-CDMA[2] 3400 to 3600 28 18.5 130 13 21.5 47.5[3] 65[3]
CAUTION
This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken
during transport and handling.
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 2 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
1.3 Applications
RF power amplifiers for base st ations and multicarrier applicat ions in the 3400 MHz to
3600 MHz frequency range
2. Pinning information
[1] Connected to flange.
3. Ordering information
4. Limiting values
Table 2. Pin ning
Pin Description Simplified outline Graphic symbol
BLF6G38-100 (SOT502A)
1drain
2gate
3source [1]
BLF6G38LS-100 (SOT5 02B)
1drain
2gate
3source [1]
3
2
1
sym112
1
3
2
3
2
1
sym112
1
3
2
Table 3. Ordering information
Type number Package
Name Description Version
BLF6G38-100 - flanged LDMOST ceramic package; 2 mounting holes;
2 leads SOT502A
BLF6G38LS-100 - earless flanged LDMOST ceramic package; 2 leads SOT502B
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min Max Unit
VDS drain-source voltage - 65 V
VGS gate-source voltage 0.5 +13 V
IDdrain current - 34 A
Tstg storage temperature 65 +150 C
Tjjunction temperature - 200 C
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 3 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
5. Thermal characteristics
6. Characteristics
7. Application information
[1] Measured within 30 kHz bandwidth.
7.1 Ruggedness in class-AB operation
The BLF6G38-100 and BLF6G38LS-100 are capable of withstanding a load mismatch
corresponding to VSWR = 10 : 1 through all phases under the following conditions:
VDS =28V; I
Dq =1050mA; P
L = PL(1dB); f = 3600 MHz.
Table 5. Thermal characteristics
Symbol Parameter Conditions Type Typ Unit
Rth(j-case) thermal resistance from junction to case Tcase =80C; PL(AV) = 18.5 W BLF6G38-100 0.58 K/W
BLF6G38LS-100 0.43 K/W
Table 6. Ch aracteristics
Tj = 25
C per section; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V(BR)DSS drain-source breakdown voltage VGS =0V; I
D=0.6mA 65--V
VGS(th) gate-source threshold voltage VDS = 10 V; ID= 180 mA 1.4 2 2.4 V
IDSS drain leakage current VGS =0V; V
DS =28V - - 5 A
IDSX drain cut-off current VGS =V
GS(th) +3.75V; V
DS = 10 V 26.5 33 - A
IGSS gate leakage current VGS =11V; V
DS = 0 V - - 450 nA
gfs forward transconductance VDS =10V; I
D=6.3A - 12 - S
RDS(on) drain-source on-state resistance VGS =V
GS(th) + 3.75 V; ID= 6.3 A - 0.09 0.15
Crs feedback capacitance VGS =0 V; VDS =28V; f=1MHz - 2.6 - pF
Table 7. Application information
Mode of operation: 1-carrier N-CDMA; Single carrier N-CDMA with pilot, paging, sync and 6 traffic channels (Walsh codes
8 - 13). PAR = 9.7 dB at 0.01 % probability on the CCDF; Channel bandwidth is 1.23 MHz; f1= 3400 MHz; f2= 3500 MHz;
f3= 3600 MHz; RF performance at VDS =28V; I
Dq = 1050 mA; Tcase =25
C; unless otherwise specified, in a class-AB
production circuit.
Symbol Parameter Conditions Min Typ Max Unit
PL(M) peak output power PL(AV) = 18.5 W 110 130 - W
Gppower gain PL(AV) =18.5W 11.5 13 - dB
RLin input return loss PL(AV) =18.5W - 10 - dB
Ddrain efficiency PL(AV) = 18.5 W 18.5 21.5 - %
ACPR885k adjacent channel power ratio (885 kHz) PL(AV) =18.5W [1] -47.5 45 dBc
ACPR1980k adjacent channel power ratio (1980 kHz) PL(AV) =18.5W [1] -65 63 dBc
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 4 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
7.2 NXP WiMAX signal
7.2.1 WiMAX signal description
frame duration = 5 ms; bandwidth = 10 MHz; sequency = 1 frame;
frequency band = WCS; sampling rate = 11.2 MHz; n = 8 / 7; G = Tg / Tb = 1 / 8;
FFT = 1024; zone type = PUSC; = 97.7 %; number of symbols = 46;
number of subchannels = 30; PAR = 9.5 dB.
Preamble: 1 symbol 30 subchannels; PL = PL(nom) + 3.86 dB.
7.2.2 Graphs
Table 8. Frame structure
Frame conte n ts Modulation techni que Data length
Zone 0 FCH 2 symbols 4 subchannels QPSK 1/2 3 bit
Zone 0 data 2 symbols 26 subchannels 64 QAM 3/4 692 bit
Zone 0 data 44 symbols 30 subchannels 64 QAM 3/4 10000 bit
VDS =28V; I
Dq = 1050 mA; f = 3500 MHz. VDS =28V; I
Dq = 1050 mA; f = 3500 MHz.
Fig 1. EVM as a function of load power;
typical values Fig 2. Power gain and drain efficiency as function of
average load power; typical values
PL (W)
101102
101
001aaj033
4
6
2
8
10
EVM
(%)
0
001aaj034
14
12
16
18
GP
(dB)
10
20
10
30
40
ηD
(%)
0
PL(AV) (W)
101102
101
GP
ηD
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 5 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
7.3 Single carrier NA IS-95 broadband performance at 2 W average
7.3.1 Graphs
VDS =28V; I
Dq = 1050 mA; f = 3500 MHz.
Fig 3. Adjacent channel power ratio a s a function of average load power; typi ca l v al ues
001aaj036
45
55
35
25
ACPR
(dBc)
65
PL(AV) (W)
101102
101
ACPR10M
ACPR20M
ACPR30M
VDS =28V; I
Dq = 1050 mA; Single Carrier IS-95;
PAR = 9.7 dB at 0.01 % probability. VDS =28V; I
Dq = 1050 mA; single carrier IS-95;
PAR = 9.7 dB at 0.01 % probability.
(1) Low frequency component
(2) High frequency component
Fig 4. Power gain and drain efficiency as function of
frequency; typical values Fig 5. Adjacen t channel power ratio as a function of
frequency; typical values
f (MHz)
3400 360035503450 3500
001aaj037
10
12
8
14
16
GP
(dB)
6
22
23
21
24
25
ηD
(%)
20
GP
ηD
f (MHz)
3400 360035603480 35203440
001aaj039
60
50
40
ACPR
(dBc)
70
ACPR1980k
ACPR1500k
ACPR885k
(2)
(1)
(1)
(2)
(1)
(2)
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 6 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
VDS =28V; I
Dq = 1050 mA; f = 3500 MHz;
single carrier IS-95; PAR = 9.7 dB at 0.01 % probability;
channel bandwidth = 1.23 MHz.
VDS =28V; I
Dq = 1050 mA; f = 3500 MHz;
single carrier IS-95; PAR = 9.7 dB at 0.01 % probability;
channel bandwidth = 1.23 MHz; IBW = 30 kHz.
(1) Low frequency component
(2) High frequency component
Fig 6. Power gain and drain efficiency as function of
load power; typical values Fig 7. Adjacen t channel power ratio as a function of
load power; typical values
VDS =28V; I
Dq = 1050 mA; single carrier IS-95;
PAR = 9.7 dB at 0.01 % probability;
channel bandwidth = 1.23 MHz.
(1) f = 3400 MHz
(2) f = 3500 MHz
(3) f = 3600 MHz
VDS =28V; I
Dq = 1050 mA; single carrier IS-95;
PAR = 9.7 dB at 0.01 % probability;
channel bandwidth = 1.23 MHz.
(1) f = 3400 MHz
(2) f = 3500 MHz
(3) f = 3600 MHz
Fig 8. Power gain as a function of load power;
typical values Fig 9. Input power as a function of load power;
typical values
PL(AV) (W)
110
2
10
001aaj041
14
12
16
18
GP
(dB)
10
20
10
30
40
ηD
(%)
0
GP
ηD
PL(AV) (W)
101102
101
001aaj042
65
55
75
45
35
ACPR
(dBc)
85
ACPR1980k
ACPR1500k
ACPR885k
(2)
(1)
(1)
(2)
(1)
(2)
001aaj043
11
9
13
15
GP
(dB)
7
PL (W)
101102
101
(1)
(2)
(3)
001aaj045
1
2
3
Pi
(W)
0
PL (W)
101102
101
(1)
(2)
(3)
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 7 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
8. Test information
Striplines are on a double copper-clad Taconic RF35 Printed-Circuit Board (PCB) with r = 3.5 and
thickness = 0.76 mm.
See Table 9 for list of components.
Fig 10. Component layout for 3400 MHz to 3600 MHz test circuit
Table 9. List of co mponents
For test circuit, see Figure 10.
Component Description Value Remarks
C1, C4, C5, C11 m ultilayer ceramic chip capacitor 10 pF ATC 100A
C2 multilayer ceramic chip capacitor 0.2 pF ATC 100A
C3 multilayer ceramic chip capacitor 4.7 F; 50 V TDK C4532X7R1H475M
C6, C7 multilayer ceramic chip capacitor 100 nF Vishay VJ1206Y104KXB
C8 multilayer ceramic chip capacitor 10 F; 50 V TDK C5750X7R1H106M
C9 multilayer ceramic chip capacitor 1.5 F; 50 V TDK C3225X7R1H155M
C10 electrolytic capacitor 470 F; 63 V
L1 ferrite SMD bead -
R1, R2, R3 SMD resistor 9.1 SMD 1206
Table 10. Meas ured test circuit impedances
f ZiZo
(GHz) () ()
3.4 0.34 + j3.36 0.44 + j3.39
3.5 0.52 + j3.86 0.56 + j3.91
3.6 1.36 + j4.85 1.38 + j5.11
001aaj048
BLF6G38-100
Input Rev 2
30RF35
NXP
BLF6G38-100
Output Rev 2
30RF35
NXP
PCB1 PCB2
R1 C4
C6
C7
C8 L1
R3
C9
C10
C11
C5
R2
C2
C1
C3
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 8 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
9. Package outline
Fig 11. Package outline SOT502A
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
SOT502A 99-12-28
03-01-10
0 5 10 mm
scale
Flanged LDMOST ceramic package; 2 mounting holes; 2 leads SOT502A
p
L
AF
b
D
U2
H
Q
c
1
3
2
D1
E
A
C
q
U1
C
B
E1
M M
w2
UNIT A
mm
Db
12.83
12.57 0.15
0.08 20.02
19.61 9.53
9.25 19.94
18.92 9.91
9.65
4.72
3.43
cU2
0.25 0.5127.94
qw
2
w1
F
1.14
0.89
U1
34.16
33.91
L
5.33
4.32
p
3.38
3.12
Q
1.70
1.45
EE
1
9.50
9.30
inches 0.505
0.495 0.006
0.003 0.788
0.772
D1
19.96
19.66
0.786
0.774 0.375
0.364 0.785
0.745 0.390
0.380
0.186
0.135 0.01 0.021.100
0.045
0.035 1.345
1.335
0.210
0.170 0.133
0.123 0.067
0.057
0.374
0.366
H
DIMENSIONS (millimetre dimensions are derived from the original inch dimensions)
w1AB
M M M
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 9 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
Fig 12. Package outline SOT502B
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
SOT502B 03-01-10
07-05-09
0 5 10 mm
scale
Earless flanged LDMOST ceramic package; 2 leads SOT502B
AF
b
D
U2
L
H
Q
c
1
3
2
D1
E
D
U1
D
E1
M M
w2
UNIT A
mm
Db
12.83
12.57 0.15
0.08 20.02
19.61 9.53
9.25 19.94
18.92 9.91
9.65
4.72
3.43
cU2
0.25
w2
F
1.14
0.89
U1
20.70
20.45
L
5.33
4.32
Q
1.70
1.45
EE
1
9.50
9.30
inches 0.505
0.495 0.006
0.003 0.788
0.772
D1
19.96
19.66
0.786
0.774 0.375
0.364 0.785
0.745 0.390
0.380
0.186
0.135 0.010
0.045
0.035 0.815
0.805
0.210
0.170 0.067
0.057
0.374
0.366
H
DIMENSIONS (millimetre dimensions are derived from the original inch dimensions)
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 10 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
10. Abbreviations
11. Revision history
Table 11. Abbreviations
Acronym Description
CCDF Complementary Cumulative Distribution Function
EVM Error Vector Magnitude
FCH Frame Control Header
FFT Fast Fourier Transform
IBW Instantaneous BandWidth
IS-95 Interim Standard 95
LDMOS Laterally Diffused Metal-Oxide Semiconductor
LDMOST Laterally Diffused Metal-Oxide Semiconductor T ransistor
NA North American
N-CDMA Narrowband Code Division Multiple Access
PAR Peak-to-Average power Ratio
PUSC Partial Usage SubChannels
RF Radio Frequency
QAM Quadrature Amplitude Modulatio n
QPSK Quadrature Phase Shift Keying
SMD Surface Mounted Device
VSWR Voltage Standing-Wave Ratio
WCS Wireless Communications Service
WiMAX Worldwide Interoperability for Microwave Access
Table 12. Revision history
Document ID Release date Data sheet status Change notice Supersedes
BLF6G38-100_6G38LS-100 v.2 20111024 Product data sheet - BLF6G38-100_6G38LS-100_1
Modifications: Table 1 on page 1: PL(p) has been changed to PL(M).
Table 7 on page 3: PL(AV) has been changed to PL(M).
BLF6G38-100_6G38LS-100_1 20081111 Product data sheet - -
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 11 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
12. Legal information
12.1 Data sheet status
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of de vice(s) descr ibed in th is docume nt may have cha nged since this docume nt was publis hed and ma y dif fer in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
12.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liab ility for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and tit le. A short data sh eet is intended
for quick reference only and shou ld not be rel ied u pon to cont ain det ailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conf lict with the short data sheet, the
full data sheet shall pre vail.
Product specificatio nThe information and data provided in a Product
data sheet shall define the specification of the product as agreed between
NXP Semiconductors and its customer, unless NXP Semiconductors and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the NXP Semiconductors product is
deemed to off er functions and qualities beyond those described in the
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completeness of such information and shall have no liability for the
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In no event shall NXP Semiconductors be liable for any indirect, incidental ,
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Notwithstanding any damages that customer might incur for any reason
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Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
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Applications — Applications that are described herein for any of these
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representation or warranty tha t such application s will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and ope ration of their applications
and products using NXP Semiconductors product s, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
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NXP Semiconductors does not accept any liabili ty related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
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Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by cust omer’s third party
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Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanent ly and irreversibly affect
the quality and reliability of the device.
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products are sold subject to the general terms and conditions of commercial
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Document status[1][2] Product status[3] Definition
Objective [short] data sheet Development This document contains data from the obj ective specification for product development.
Preliminary [short] dat a sheet Qualification This document contains data from the preliminary specification.
Product [short] dat a sheet Production This document contains the product specification.
BLF6G38-100_6G38LS-100_1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 2 — 24 October 2011 12 of 13
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
Non-automotive qualified products — Unless this data sheet expressly
states that this specific NXP Semiconductors product is automotive qualified,
the product is not suitable for aut omo tive use. It i s neit her qua lif ied nor tested
in accordance with automotive testing or application requirements. NXP
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In the event that customer uses the product for design-in and use in
automotive applications to automot ive specifications and standard s, customer
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use of the product for automotive applications beyond NXP Semiconductors’
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12.4 Trademarks
Notice: All referenced b rands, produc t names, service names and trademarks
are the property of their respect i ve ow ners.
13. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
NXP Semiconductors BLF6G38-100; BLF6G38LS-100
WiMAX power LDMOS transistor
© NXP B.V. 2011. All rights reserved.
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For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 24 October 2011
Document identifier: BLF6G38-100_6G38LS-100_1
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
14. Contents
1 Product profile. . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 General description . . . . . . . . . . . . . . . . . . . . . 1
1.2 Features and benefits. . . . . . . . . . . . . . . . . . . . 1
1.3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Pinning information. . . . . . . . . . . . . . . . . . . . . . 2
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 2
4 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 2
5 Thermal characteristics . . . . . . . . . . . . . . . . . . 3
6 Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 3
7 Application information. . . . . . . . . . . . . . . . . . . 3
7.1 Ruggedness in class-AB operation . . . . . . . . . 3
7.2 NXP WiMAX signal. . . . . . . . . . . . . . . . . . . . . . 4
7.2.1 WiMAX signal description. . . . . . . . . . . . . . . . . 4
7.2.2 Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7.3 Single carrier NA IS-95 broadband
performance at 2 W average . . . . . . . . . . . . . . 5
7.3.1 Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8 Test information. . . . . . . . . . . . . . . . . . . . . . . . . 7
9 Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 8
10 Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 10
11 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 10
12 Legal information. . . . . . . . . . . . . . . . . . . . . . . 11
12.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 11
12.2 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
12.3 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
12.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 12
13 Contact information. . . . . . . . . . . . . . . . . . . . . 12
14 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13