A 100 W LDMOS RF power transistor for broadcast transmitter applications and industrial
applications. The transistor can deliver 100 W broadband from HF
excellent ruggedness and broadband performance of this device makes it ideal for digital
transmitter applications.
Table 1.Typical performance
RF performance at VDS = 40 V in a common-source 860 MHz test circuit.
Mode of operationfPLP
CW, class AB860100 --2160-2-tone, class ABf1 = 860; f2 = 860.1-100-2147−35DVB-T (8k OFDM)858--242233−34
to 1 GHz. The
η
L(PEP)PL(AV)Gp
(MHz)(W) (W)(W)(dB) (%) (dBc)(dB)
IMD3 PAR
D
[1]
8.3
[2]
CAUTION
[1] Measured [dBc] with delta marker at 4.3 MHz from center frequency.
[2] PAR (of output signal) at 0.01 % probability on CCDF; PAR of input signal = 9.5 dB at 0.01 % probability on
CCDF.
This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken
during transport and handling.
1.2Features
2-tone performance at 860 MHz, a drain-source voltage VDS of 40 V and a quiescent
drain current I
Peak envelope power load power = 100 W
Power gain = 21 dB
Drain efficiency = 47 %
Third order intermodulation distortion = −35 dBc
DVB performance at 858 MHz, a drain-source voltage VDS of 40 V and a quiescent
drain current I
Average output power = 24 W
Power gain = 22 dB
Drain efficiency = 33 %
Third order intermodulation distortion = −34 dBc (4.3 MHz from center frequency)
= 0.5 A:
Dq
= 0.5 A:
Dq
Page 2
NXP Semiconductors
2
2
Integrated ESD protection
Excellent ruggedness
High power gain
High efficiency
Excellent reliability
Easy power control
Compliant to Directive 2002/95/EC, regarding Restriction of Hazard ou s Subs tances
(RoHS)
1.3Applications
Communication transmitter applications in the UHF band
Industrial applications in the UHF band
Product data sheetRev. 04 — 19 November 2009 3 of 19
Page 4
NXP Semiconductors
BLF871; BLF871S
UHF power LDMOS transistor
VGS = 0 V; f = 1 MHz.
Fig 1.Output capacitanc e as a function of drain-source voltage; typical values
7.Application information
Table 7.RF performance in a common-source narrowband 860 MHz test circuit
Th = 25 °C unless otherwise specified.
Mode of operationfVDSIDqP
2-tone, class ABf1 = 860;
DVB-T (8k OFDM) 858400.5 -24> 19 > 30 < −31
160
C
oss
(pF)
120
80
40
0
0604020
L(PEP)PL(AV)Gp
001aaj276
VDS (V)
η
IMD3PAR
D
(MHz)(V)(A) (W)(W)(dB) (%)(dBc)(dB)
400.5 100-> 19 > 44 < −30-
= 860.1
f
2
[1]
> 7.8
[2]
[1] Measured [dBc] with delta marker at 4.3 MHz from center frequency.
[2] PAR (of output signal) at 0.01 % probability on CCDF; PAR of input signal = 9.5 dB at 0.01 % probability on
Product data sheetRev. 04 — 19 November 2009 7 of 19
Page 8
NXP Semiconductors
7.2.2DVB-T
BLF871; BLF871S
UHF power LDMOS transistor
22
G
p
(dB)
20
18
16
400900800600700500
(2)
(1)
G
p
(1)
η
D
(2)
001aaj284
f (MHz)
50
40
30
20
IDq = 0.5 A; measured in a common source broadband
test circuit as described in
(1) VDS = 40 V; P
(2) VDS = 42 V; P
L(AV)
L(AV)
= 22 W
= 24 W
Section 8.
Fig 9.DVB-T power gain and drain efficiency as
functions of frequency; typical values
9
PA R
(dB)
8
η
(%)
0
D
IMD3
(dBc)
−20
−40
−60
(2)
(1)
400900800600700500
001aaj285
f (MHz)
IDq = 0.5 A; measured in a common source broadband
test circuit as described in
(1) VDS = 40 V; P
(2) VDS = 42 V; P
L(AV)
L(AV)
= 22 W
= 24 W
Section 8.
Fig 10. DVB-T third order intermodulation distortion
as a function of frequency; typical values
001aaj286
(1)
(2)
7
6
5
400900800600700500
(3)
(4)
f (MHz)
IDq = 0.5 A; measured in a common source broadband test circuit as described in Section 8.
PAR of input signal = 9.5 dB at 0.01 % probability on CCDF.
(1) PAR at 0.01 % probability on the CCDF; VDS = 40 V; P
(2) PAR at 0.01 % probability on the CCDF; VDS = 42 V; P
(3) PAR at 0.1 % probability on the CCDF; VDS = 40 V; P
(4) PAR at 0.1 % probability on the CCDF; VDS = 42 V; P
L(AV)
L(AV)
L(AV)
L(AV)
= 22 W
= 24 W
= 22 W
= 24 W
Fig 11. DVB-T PAR at 0.1 % and at 0.01 % probability on the CCDF as function of frequency; typical values
The reliability at pulsed conditions can be calculated as follows: TTF (0.1 %) × 1 / δ.
(1) Tj = 100 °C
(2) Tj = 110 °C
(3) Tj = 120 °C
(4) Tj = 130 °C
(5) Tj = 140 °C
(6) Tj = 150 °C
(7) Tj = 160 °C
(8) Tj = 170 °C
(9) Tj = 180 °C
(W × L) 2.4 mm × 5 mm
R1resistor100 Ω
R2resistor10 kΩ
[1] American technical ceramics type 100B or capacitor of same quality.
[2] American technical ceramics type 180R or capacitor of same quality.
[3] American technical ceramics type 100A or capacitor of same quality.
[4] Printed-Circuit Board (PCB): Rogers 5880; εr = 2.2 F/m; height = 0.79 mm; Cu (top/bottom metallization);
Product data sheetRev. 04 — 19 November 2009 11 of 19
copper plating = 35 μm.
Page 12
Product data sheetRev. 04 — 19 November 2009 12 of 19
8
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Product data sheetRev. 04 — 19 November 2009 16 of 19
Page 17
NXP Semiconductors
10. Abbreviations
Table 10.Abbreviations
AcronymDescription
CWContinuous Wave
CCDFComplementary Cumulative Distribution Function
DVBDigital Video Broadcast
DVB-TDigital Video Broadcast - Terrestrial
ESDElectroStatic Discharge
HFHigh Frequency
IMD3Third order InterModulation Distortion
LDMOSLaterally Diffused Metal-Oxide Semiconductor
LDMOSTLaterally Diffused Metal-Oxide Semiconductor Transistor
OFDMOrthogonal Frequency Divisi on Multiplexing
PARPeak-to-Average power Ratio
PEPPeak Envelope Power
RFRadio Frequency
TTFTime To Failure
UHFUltra High Frequency
VSWRVoltage Standing-Wave Ratio
BLF871_BLF871S_420091119Product data sheet-BLF871_3
Modifications:• This document now describes both the BLF871 and the BLF871S.
BLF871_320090921Product data sheet-BLF871_2
BLF871_220090305Preliminary data sheet-BLF871_1
BLF871_120081218Objective data sheet--
Product data sheetRev. 04 — 19 November 2009 17 of 19
Page 18
NXP Semiconductors
BLF871; BLF871S
UHF power LDMOS transistor
12. Legal information
12.1Data sheet status
Document status
Objective [short] data sheetDevelopmentThis document contains data from the objective specification for product development.
Preliminary [short] data sheet QualificationThis document contains data from the preliminary specification.
Product [short] data sheetProductionThis document contains the product specification.
[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 device(s) described in this docu ment may have changed si nce this d ocument was pub lished and may dif fer in case of multiple devices. The latest product st atus
information is available on the Internet at URL http://www.nxp.com.
[1][2]
Product status
[3]
Definition
12.2Definitions
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 liability 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 title. A short data sheet is intended
for quick reference only and should not be relied u pon to co nt 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 conflict with the short data sheet, the
full data sheet shall prevail.
12.3Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, NXP Semiconduct ors does not give any repr esentatio ns or
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at
http://www.nxp.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by NXP Semiconductors. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
No offer to sell or license — Nothing in this document may be interpreted or
construed as an offer to sell product s that is ope n for accept ance or the gr ant,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
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60134) may cause permanent
12.4Trademarks
Notice: All referenced brands, prod uct names, service names and trad emarks
are the property of their respective owners.
13. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Please be aware that important notices concerning this do cument and the product(s)
described herein, have been included in section ‘Legal information’.