ALM-1812-TR1G

ALM-1812-TR1G Datasheet


ALM-1812 GPS Filter-LNA-Filter Front-End Module

Part Datasheet
ALM-1812-TR1G ALM-1812-TR1G ALM-1812-TR1G (pdf)
Related Parts Information
ALM-1812-BLKG ALM-1812-BLKG ALM-1812-BLKG
PDF Datasheet Preview
ALM-1812 GPS Filter-LNA-Filter Front-End Module

Data Sheet

Avago Technologies’ ALM-1812 is a GPS front-end module that combines a high-gain low-noise amplifier LNA with GPS FBAR filters. The LNA uses Avago Technologies’ 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 adjustment. The integrated filter utilizes an Avago Technologies’ leadingedge FBAR filter for exceptional rejection at Cell/PCS-Band frequencies.

The low noise figure and high gain, coupled with low current consumption make it suitable for use in critical lowpower GPS applications or during low-battery situations.

Component Image Surface Mount x mm3 12-lead MCOB

NC pin 1 Gnd pin 2 RF in pin 3
pin 12 pin 11 pin 10
1812 YMXXXX

Gnd pin 4 pin 5 pin 6

NC pin 9 RF Out pin 8 NC pin 7

NC pin 9

TOP VIEW

Vdd NC
pin 10 pin 11 pin 12

NC pin 1

RF Out pin 8

Gnd pin 2

NC pin 7

Gnd pin 6

Gnd pin 5

Gnd pin 4

RF in pin 3

BOTTOM VIEW

Note Package marking provides orientation and identification “1812” = Product Code “Y” = Year of manufacture “M” = Month of manufacture “XXXX”= Last 4 digit of lot number
• Very Low Noise Figure
• Exceptional Cell/PCS-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
• x mm3 size
• Adjustable bias current via single
resistor/voltage
• Lead-free, Halogen free and meets MSL3

Specifications Typical performance 25°C

At 1.575GHz, Vdd = 2.8V, Idd = 6.8mA
• Gain = dB
• NF = dB
• IIP3 = +2 dBm, IP1dB = -8 dBm
• S11 = -10 dB, S22 = -15 dB
• Cell-Band Rejection > 90dBc
• PCS-Band Rejection > 85dBc

Application
• GPS Front-end Module

Application Circuit
external
+Vdd = 2.8V VBias

RBias

RFin

RFout

Absolute Maximum Rating [1] TA = 25°C

Parameter

Units

Device Drain to Source Voltage[2] V

Drain Current[2]
Part Number Ordering Information

Part Number ALM-1812-BLKG ALM-1812-TR1G

Qty 100 3000

Container Antistatic Bag 13” Reel

ALM-1812 Typical Noise Parameters at 25°C, Freq = GHz, Vdd = 1.8V, Idd = 4mA

Freq

Fmin

GAMMA OPT

Rn/50

Notes
• The exceptional noise figure performance of the ALM-1812 is due to
its highly optimized design. In this regard, the Fmin of the ALM-1812 shown above is locked down by the internal input pre-match. This allows the use of relatively inexpensive chip inductors for external matching.

Package Dimension
1812 YMXXXX

TOP VIEW

SIDE VIEW
all gaps
pitch
0.3350-4x
0.8250-4x pitch
0.80-3x
0.70-3x
0.10-3x
0.9875-8x pitch
0.9875-6x pitch

BOTTOM VIEW
0.4975-8x PIN 1
0.8250-2x pitch
0.35sq-12x

Note All dimensions are in milimeters Dimensions are inclusive of plating Dimensions are exclusive of mold and metal burr. Y refer to year, M refer to month & XXXX refer to last 4 digit of lot number

Bottom Solder Mask

PCB Land Patterns and Stencil Design
0.9875-8x
0.35sq-12x
0.70-3x
1.10-2x
0.8250-4x
0.56-3x
0.9875-8x
1.10-2x
0.3150sq-12x 0.8250-4x
0.80-3x Land Pattern
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Datasheet ID: ALM-1812-TR1G 520088