ALM-1912 Datasheet, PDF (1/17 Pages) AVAGO TECHNOLOGIES LIMITED – Low external component count

ALM-1912
GPS Filter–LNA Front–End Module
Data Sheet
Description
Avago Technologies’ ALM-1912 is a GPS front-end module
that combines a GPS FBAR filter with high-gain low-noise
amplifier (LNA).The LNA uses Avago Technologies’ pro-
prietary 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 adjustment. The
filter use Avago Technologies’ leading-edge FBAR filter for
low GPS band insertion loss and exceptional 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 9)
Vsd
(pin 8)
Vdd (pin 7)
Gnd (pin 2)
1912
WWYY
Gnd
(pin 3)
Gnd
(pin 4)
Top View
RF Out (pin 6)
NC (pin5)
Vdd (pin 7)
RF Out (pin 6)
Vsd
(pin 8)
Gnd
(pin 9)
RF In (pin 1)
NC (pin 5)
Gnd
(pin 4)
Gnd
(pin 3)
Gnd (pin 2)
Bottom View
Note:
Package marking provides orientation and identification
“1912” = Product Code
“YY” = Year of manufacture
“WW” = Work week of manufacture
Features
• 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 uA
• CMOS compatible shutdown pin (SD)
• ESD : > 3kV 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: > 57dBc
• PCS-Band Rejection: > 53dBc
• WLAN-Band Rejection: > 52dBc
Application
• GPS Front-end Module
Application Circuit
VBias
RBias
+Vdd = 2.7V
L
RFin
GPS _LNA
Filter
RFout