NXP Semiconductors
UM10491
BGU7004 GPS LNA EVB
UM10491
© NXP B.V. 2011. All rights reserved.
User manual
Rev. 1.0 — 14 June 2011
4 of 15
2. General description
NXP Semiconductors’ BGU7004 GPS low noise amplifier is dedicated for the GPS
frequency band. The integrated biasing circuit is temperature stabilized, which maintains
a constant current over temperature. It also enables the superior linearity performance of
the BGU7004. It is also supplied with an enable function that allows it to be controlled
with a logic signal. In disabled mode it only consumes less than 1µA.
The output of the BGU7004 is internally matched for 1575.42 MHz whereas only one
series inductor at the input is needed to achieve the best RF performance. Both the input
and output are AC coupled via an integrated capacitor.
Only two external components are required to build a GPS LNA with the following
advantages:
Low noise;
High gain;
High linearity under jamming;
Very low package height 0.5mm;
Low current consumption;
Short power settling time;
The data sheet of the BGU7004 is available, and it is called “SiGe:C Low Noise Amplifier
MMIC for GPS applications”
3. Application Board
The BGU7004 GPS LNA evaluation board simplifies the evaluation of the BGU7004 GPS
LNA for the GPS application. The evaluation board enables testing of the device
performance and requires no additional support circuitry. The board is fully assembled
with the BGU7004, including the input series inductor as well as a decoupling capacitor
to optimize the performance. The board is supplied with two SMA connectors for input
and output connection to RF test equipment. The BGU7004 can operate from a 1.5V to
2.85V single supply and consumes about 5 mA.
