AH22S
The Communications Edge
TM
Product Information
High Dynamic Range CATV Amplifier
75: Push-Pull Application Circuit
Circuit Board Material: .062” total thickness with a .028” FR4 top RF layer (
r
=4.8),
4 total layers (other layers added for rigidity), 1 oz copper
Typical RF Performance at 25qC
Frequency
Gain
Input R.L.
Output R.L.
CTB
CSO
XMOD
Output P1dB
Output IP2
Output IP3
Noise Figure
Device Current
Device Voltage
MHz
dB
dB
dB
dBc
dBc
dBc
dBm
dBm
dBm
dB
mA
V
50
11.3
10.6
17.1
-75
-73
-63
+25.9
+79
+43
6.1
250
450
860
11.1 11.1 11.1
10.4 11.6 15.8
15.4 15.4 18.2
-74
-74
-86
-77
-63
-63
+26 +25.5 +24.7
+77
+77
+76
+45
+42
+42
4.6
4.5
4.2
320
+5
ID=C1
C=1.5 pF
XFMR
ID=L1
1
o
2
1 : n1
o
3
ID=L2
L=5.6 nH
4
ID=L3
L=5.6 nH
ID=C2
C=1.5 pF
1. Balun, board, and connector losses have not been extracted, but typically account of
0.4 dB loss midband and 1.1 dB loss at 860 MHz.
2. CSO, CTB, & XMOD are measured at +39 dBmV/channel, 77 channels Flat Loading.
3. OIP2 is measured at f1 + f2 at 8 dBm / tone.
4. OIP3 is measured at 8 dBm / tone with 10 MHz spacing.
The transformers, L1 and L6, used on the WJ evaluation board are handwound baluns using these materials: 6
turns bifilar wire (MWS B2383211) around a ferrite core (TDK, H5C2-T3.1-1.3-1.3). An SMT transformer
(M/A Com ETC1-1-13) can also be used.
12
11
10
9
8
7
0
200
400
Gain
0
-5
-10
-15
-20
-25
-30
600
800
1000
0
200
Return Loss
S11
S22
400
Frequency (MHz)
7
6
5
4
3
2
0
200
400
600
800
1000
Frequency (MHz)
-60
-70
-80
-90
0
100
Frequency (MHz)
+39 dBmV / channel, 77 channel flat loading
Noise Figure
-50
CSO, CTB, & XMOD
CTB
XMOD
200
Frequency (MHz)
Specifications and information are subject to change without notice.
WJ Communications, Inc
Phone 1-800-WJ1-4401
FAX: 408-577-6621
e-mail: sales@wj.com
Web site: www.wj.com
£
ID=C3
C=100 pF
ID=R1
R=560 Ohm
+5 V
ID=C5
C=1000 pF
ID=L4
L=470 nH
AH22S
ID=C6
C=1000 pF
XFMR
ID=L6
4
o
o
n1 : 1
2
ID=C7
C=1000 pF
3
1
ID=L5
L=470 nH
CAP
ID=C4
C=100 pF
ID=C8
C=1000 pF
ID=R2
R=560 Ohm
+5 V
600
800
1000
CSO
300
400
500
600
Page 3 of 4 April 2006
WJCI [ WJ COMMUNICATION. INC. ]
