NXP SiGe:C GPS LNAs
BGU700x/BGU8007
The best reception of GNSS signals
with the smallest footprint
By dynamically suppressing strong cellular and WLAN transmit signals, an industry first, these LNAs
offer the best reception of weak GPS signals. Linearity improves with a 10 dB better IP3 under -40 to
-20 dBm jamming conditions, while NF remains below 1 dB. Requiring only two external components,
they save up to 50% in PCB size and 10% in component cost, offering the smallest footprint in the market.
Key features
Low noise figure: 0.75 dB
System-optimized gain of 16.5 or 19 dB
Adaptive biasing dynamically suppresses strong cellular and
WLAN transmit signals, resulting in improved linearity of
10 dB better IP3 under -40 to -20 dBm jamming conditions
and effective GPS output with jammer powers up to -15 dBm.
AEC-Q100 qualified (BGU7004, BGU7008) for highest
reliability in harsh conditions
Only two external components required
Small 6-pin leadless package: 1.45 x 1.0 x 0.5 mm
Key benefits
Maintains optimal GPS signal reception for as long as possible
Significant PCB size savings (50%)
Lower component cost (10%)
Applications
Smart phones, feature phones
Tablets
Personal Navigation Devices (PNDs)
Digital Still Camera (DSCs)
Digital Video Camera (DVCs)
RF front-end modules (used in phones)
Complete GPS chipset modules (used in DSCs)
Automotive applications (BGU7004/8) : toll collection,
emergency call
These SiGe:C low noise amplifiers (LNAs) improve the
reception of GPS signals, including GloNass and Galileo.
Available in extremely small 6-pin packages, they reduce
footprint, lower cost, and enhance reception in systems that
use an active or patch antenna.
GPS has become a standard feature in a very wide range of
consumer products, from personal navigation devices to digital
video cameras, watches, electric cars, and more. GPS signal
power levels are weak and below the noise floor at -155 dBm.
In many of these products, especially smart phones, strong
transmitters such as WLAN and cellular can drive the GPS LNA
into compression. When the GPS LNA is in compression, it has
lower gain which causes worse GPS reception. And when in
compression, the LNA generates intermodulation products
and harmonics from the transmitter signals, which can
overpower the weak GPS signals and lead to no GPS reception.
The NXP BGU700x/BGU8007 series use adaptive biasing
to immediately detect any output power from jammers, and
compensate by temporarily increasing the current. As a result,
optimal GPS signal reception is maintained for as long as possible.
Each device in the BGU700x/BGU8007 series requires only one
input matching inductor and one supply decoupling capacitor
to complete the design. This creates a very compact design
and lowers the bill of materials. Designers can save up to 50%
in PCB size and 10% in component cost. For example
the BGU7005 is in a 1.45 x 1 mm package with application
area at only 4.53 mm
2
. This is 50% smaller than a comparable
solution with a 9.06 mm
2
application area.
Smallest footprint
Type
BGU7005/7
Competitor
Competitor
Competitor
Competitor
Competitor
SOT886
Wafer level package
Wafer level package
Thin small leadless package
Thin small leadless package
Thin small outline non-leaded
Application diagram
external
active
antenna
BPF
LNA
embedded
antenna
BPF
LNA
SPDT
BPF
GPS
RECEIVER
IC
001aan955
Package
Package size
X
mm
1.45 x 1
1.26 x 0.86
0.86 x 0.86
2 x 1.3
1.4 x 1.26
1.5 x 1.5
MMIC *
Y
mm
1.25
1.1
1.1
1.55
1.5
1.75
Pins
#
6
6
4
6
6
6
Pitch Area
mm
0.5
0.4
0.4
0.5
0.48
0.5
SMD's
Appl.
#
2
6
4
4
4
5
SMD size
X
mm
1.5
1.5
1.5
1.5
1.5
1.5
Y
mm
0.8
0.8
0.8
0.8
0.8
0.8
SMD's
area
mm
2
2.4
7.2
4.8
4.8
4.8
6
Appl. area
mm
2
4.53
8.85
6.01
8.29
7.28
9.06
mm
1.7
1.5
1.1
2.25
1.65
1.75
mm
2
2.13
1.65
1.21
3.49
2.48
3.06
* Incl. keep out area on pcb (common used assembly rule)
Selection guide
@ 1.575 GHz
Supply
voltage
V
cc
(V)
Type
Package
V
cc
= 2.2 V, Min
V
cc
= 1.5 V, Min
V
cc
= 1.8 V, Min
V
cc
= 2.2 V, Typ
V
cc
= 1.5 V, Typ
V
cc
= 1.8 V, Typ
Supply current
I
cc
(mA)
Insertion power gain
|s
21
|
2
(dB)
Noise
figure
NF
(dB)
Input power at 1 dB gain
compression
P
L(1dB)
(dBm)
V
cc
= 2.5 V, I
cc
= 5 mA
Input third-order intercept point
f
1
= 1713 MHz, f
2
= 1851 MHz
IP3
i
(dBm)
V
cc
= 2.5 V, I
cc
= 5 mA
0
-
-
-
-
-
V
cc
= 2.85 V, Min
V
cc
= 2.85 V, Min
-
5
5
2
2
-
V
cc
= 2.85 V, Typ
Min
BGU7003
BGU7004^
BGU7005
BGU7007
BGU7008^
BGU8007
SOT891
SOT886
SOT886
SOT886
SOT886
SOT886
2.2
1.5
1.5
1.5
1.5
1.5
Max
2.85
2.85
2.85
2.85
2.85
2.2
Min
3
-
-
-
-
-
Typ
-
4.5
4.5
4.8
4.8
4.6
Max
15
-
-
-
-
-
Min
16
-
-
-
-
-
Typ
18.3
16.5*
16.5*
18.5**
18.5**
19.0***
Max
20
-
-
-
-
-
Typ
0.8
0.9
0.9
0.9
0.9
0.75
#
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-20
-
-
-
-
-
-
-11
-11
-
-8
-8
-
-
-
-
-
1
-
-
-
-
-
4
-
5
5
1
1
-
-
9
9
4
4
-
-
-
-
-
-
2
-
-
-
-
-
5
-14 -11
-14 -11
-15 -12
-15 -12
-
-
-14 -11
-14 -11
-
-
-15 -12
-13 -10
* = 16.5 dB without jammer / 17.5 dB with jammer
** = 18.5 dB without jammer / 19.5 dB with jammer
*** = 19.0 dB without jammer / 20.5 dB with jammer
^ = AEC-Q101 qualified (some limitations apply)
#
= Evaluation board losses excluded
www.nxp.com
© 2011 NXP Semiconductors N.V.
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The
information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and
may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof
does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Date of release: October 2011
Document order number: 9397 750 17194
Printed in the Netherlands
V
cc
= 2.85 V, Typ
-
12
12
5
5
-
V
cc
= 2.2 V, Min
V
cc
= 1.5 V, Min
V
cc
= 1.8 V, Min
V
cc
= 2.2 V, Typ
V
cc
= 1.5 V, Typ
V
cc
= 1.8 V, Typ
Analogue and Mixed Signal
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