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ASB Inc.

· sales@asb.co.kr · Tel: +82-42-528-7223

June 2012

ASL31X

XM 2-stage Low Noise Amplifier

1) Total gain is sum of the 1st stage and 2nd stage amplifiers (not include filter loss).

2) NF is that of the 1st stage amplifier.

3) S11 is that of the 1st stage amplifier and S22 is that of the 2nd stage amplifier.

4) IIP3 is that of the 2nd stage amplifier measured with two tones at an input power of -34 dBm/tone separated by 1MHz.

5) Total current is the sum of the 1st stage and the 2nd stage amplifiers.

0

500

1000

1500

2000

2500

3000

3500

0

1

2

3

4

5

Frequency (MHz)

2100

2200

2300

2400

2500

2600

-40

-30

-20

-10

0

10

20

30

S12

S22

S11

S21

Frequency [MHz]

ASL31X

RF OUT 2

C6=1 pF

C3=1

mF

R2=10

W

Vs=4.5 V

L4=4.3 nH

C7=1

mF

RF IN 1

C1=39 pF

L3=1.5 nH

C8=6.8 pF

C2=10 pF

R1=10

W

C4=1.5 pF

C5=1

mF

RF IN 2

RF OUT 1

BPF

L1=3.6 nH

(LQW18AN3N6D00)

L2=22 nH

(LQG18HN15NJ00)

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

Power Gain

1)

F = 2338 GHz

29

dB

Noise Figure

2)

NF

F = 2338 GHz

0.75

dB

Input Return Loss

3)

F = 2338 GHz

-14

dB

Output Return Loss

3)

F = 2338 GHz

-17

dB

1 dB Gain Compression

Input Power

F = 2338 GHz

-12

dBm

3

Input Power

4)

IIP3

F = 2338 GHz

1.5

dBm

Circuit Current

5)

F = 2338 GHz,

Non-RF

45

mA

Schematic

1st stage S-parameters & K-factor

XM

2338 MHz

+4.5 V

Board Layout (FR4, 20x14 mm

Top

Bottom

APPLICATION CIRCUIT

(TYPE 2)

* Note: C7 must be placed as close as possible to the device.