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PDF ALM-GP003 Data sheet ( Hoja de datos )
| Número de pieza | ALM-GP003 | |
| Descripción | GPS Filter-LNA Front-End Module | |
| Fabricantes | AVAGO | |
| Logotipo |  |
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ALM-GP003
GPS Filter–LNA Front–End Module
Data Sheet
Description
Avago Technologies’ ALM-GP003 is a GPS front-end
module that combines a GPS FBAR filter with high-gain
low-noise amplifier (LNA).The LNA uses Avago Tech-
nologies’ proprietary GaAs Enhancement-mode pHEMT
process to achieve high gain with very low noise figure
and high linearity. Noise figure distribution is very tightly
controlled. A CMOS-compatible shutdown pin is included
either for turning the LNA on/off or for current adjust-
ment. The filter use Avago Technologies’ leading-edge
FBAR filter for low GPS band insertion loss and exception-
al rejection at Cellular, PCS and WLAN band frequencies.
The low noise figure and high gain, coupled with low current
consumption make it suitable for use in critical low-power
GPS applications or during low-battery situations.
Component Image
Surface Mount 2.9 x 2.0 x 0.95 mm3 9-lead MCOB
RF In (pin 1)
Gnd (pin 2)
Gnd
(pin 9)
Vsd
(pin 8)
GP003
YMXXXX
Gnd
(pin 3)
Gnd
(pin 4)
Top View
Vdd (pin 7)
RF Out (pin 6)
NC (pin5)
Vdd (pin 7)
Vsd
(pin 8)
Gnd
(pin 9)
RF In (pin 1)
RF Out (pin 6)
NC (pin 5)
Gnd
(pin 4)
Gnd
(pin 3)
Gnd (pin 2)
Bottom View
Note:
Package marking provides orientation and identification
“GP003” = Product Code
“Y” = Year of manufacture
“M” = Month of manufacture
“XXXX” = Last 4 digits of lot number
Features
• Operating temperature range -40 °C to +85 °C
• Very Low Noise Figure
• Exceptional Cell/PCS/WLAN-Band rejection
• Low external component count
• Fully-matched at RF input and RF output
• Shutdown current : < 1 µA
• CMOS compatible shutdown pin (SD)
• ESD : > 3 kV at RFin pin
• 2.9 x 2.0 x 0.95 mm size
• Adjustable bias current via single external resistor/
voltage
• Lead-free and Halogen-free
Specifications (Typical performance @ 25 °C)
At 1.575GHz, Vdd = 2.7V, Idd = 6mA
• Gain = 19.3 dB
• NF = 1.62 dB
• IIP3 = +1.5 dBm
• IP1dB = -8 dBm
• S11 = -9.5 dB
• S22 =-13.5 dB
• Cell-Band Rejection: > 57 dBc
• PCS-Band Rejection: > 53 dBc
• WLAN-Band Rejection: > 52 dBc
Application
• GPS Front-end Module
Application Circuit
VBias
RBias
+Vdd = 2.7V
L
RFin
GPS
Filter
LNA
RFout
1 page  
Vdd (Pin 7)
R1 L1
C2 L2
Vdd
C1
50-Ohms TL
GPS
Filter
LNA
RFin (Pin 1)
50-Ohms TL
RFout (Pin 6)
(Pin 2, 3, 4, 5, 9)
Vsd (Pin 8)
Vsd
R2
C3
Figure 2. Demoboard and application schematic diagram
Notes:
• The module is fully matched at the input and output RF pins. Both these pins also have built-in coupling and DC-blocking capacitors. Best noise
performance is obtained using high-Q wirewound inductors. This circuit demonstrates that low noise figures are obtainable with standard 0402
chip inductors.
• C2 and L2 form a matching network that affects the frequency response and linearity of the LNA, these can be tuned to optimize gain and return
loss.
• L1 and R1 isolates the demoboard from external disturbances during measurement. It is not needed in actual application. Likewise, C1 and C3
mitigate the effect of external noise pickup on the Vdd and Vsd lines respectively. These components are not required in actual operation.
• Bias control is achieved by either varying the Vsd voltage with/without R2, or fixing the Vsd voltage to Vdd and adjusting R2 for the desired current.
R2 = 4.7Kohm will result 6mA when Vdd = Vsd = 2.7V. R2 = 2.7Kohm for 4mA when Vdd = Vsd = 1.8V & R2 = 15Kohm for 4mA when Vdd = Vsd =
2.8V.
5
5 Page 
ALM-GP003 Scattering Parameter and Measurement Reference Planes
Vdd (Pin 7)
R1 L1
C2 L2
Vdd
C1
(Pin 1)
GPS
FILTER
LNA
(Pin 6)
REFERENCE
PLANE
(Pin 2, 3, 4, 5, 9)
Vsd (Pin 8)
Vsd
R2
C3
Figure 27. Scattering parameter measurement reference planes
MODULE
REFERENCE
PLANE
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ALM-GP003.PDF ] | |
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