alm-1222 Avago Technologies, alm-1222 Datasheet - Page 5

• Manufacturer Part Number: alm-1222
• Description: 1.8-2.2ghz Low Noise, High Gain, High Linearity Balanced Amplifier Module
• Manufacturer: Avago Technologies

Balanced Amplifier Demo Board Layout
Figure 7. Suggested Balanced Amplifier Demo Board Layout
Recommended PCB material is 10 mils Rogers RO4350.
Suggested component values may vary according to
layout and PCB material.
Balanced Demo Board Schematic
RF Input
Figure 8. Application Schematic for Balanced Amplifier
5
Circuit
Circuit
Symbol
Symbol
C1, C10
C2, C7
C3, C6
C4, C9
C5, C8
R1, R4
R2, R3
Coupler
R3
14.22x5.08
Coupler
0805
0402
0402
0402
0402
0402
0402
mm
Size
Size
2
XC1900E -03 or equiv
Anaren Xinger II
50 -Ohms TL
50 -Ohms TL
2.2uF ceramic
0.1uF ceramic
0.1uF ceramic
Description
Description
Module outline
49.9 ohms
Not used
Not used
Not used
1,22
3,4
6
2
5
RF Input
7
C6
C3
match
match
Input
Input
21
8
8
8
Interstage
Interstage
match
match
20
Bias
Bias
9
3
1,2,19,20
10
19
1,2,19,20
C8
C5
Output
Output
match
match
C10
Ground
C1
11
17,18
16
14,15
12
13
50 -Ohms TL
50 -Ohms TL
20-pin connector
Coupler
RF Output
RF Output
R2