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WJ Communications, Inc. Phone: 1-800-WJ1-4401 FAX: 408-577-6620 e-mail: sales@wj.com Web site: www.wj.com
April 2002
AH22
Product Description
The AH22 is a high dynamic range amplifier tar-
geting cable TV markets. A combination of gain
flatness, high linearity and bandwidth make it
ideal for CATV distribution, cable modem and
laser diode driver applications. The device is
designed for 75 systems and packaged for
push-pull operation. A mature and reliable GaAs
MESFET technology is employed to maximize
linearity at low power dissipation. The package is
a thermally enhanced SOIC-8 and all devices are
100% RF tested.
Product Features
50-860 MHz Bandwidth
-61 dBc CTB, 110 Channels,
40 dBmV
-63 dBc CSO, 110 Channels,
40 dBmV
4.5 dB Noise Figure
11.3 dB Gain
23 dBm P1dB
Surface Mount
Thermally enhanced SOIC-8 pkg
Single +5 Volt Supply
Functional Diagram
Absolute Maximum Ratings
Parameter
Rating
Operating Case
-40 to +85C
Storage Temperature
-40 to +125C
Junction Temperature
+155C
Thermal Resistance (
JC
) 28C/W
Supply Voltage
+6.0 V
Input RF Power (continuous)
+13 dBm
Operation of this device above any of these parameters may cause permanent damage.
Ordering Information
Part No.
Description
AH22
High Dynamic CATV Range Amplifier
(Available in tape and reel)
AH22-PCB
Fully Assembled Application Circuit
50-860 MHZ
AH22DUAL-PCB Fully Assembled Application Circuit,
Dual AH22
Function Pin
No.
Input 1
1
Ground
2,3,6,7
Input 2
4
Output/Bias2
5
Output/Bias1
8
1
2
3
4
8
7
6
5
High Dynamic Range CATV Amplifier
Specifications
Parameter
Units
Minimum
Typical
Maximum
Condition
Frequency Range
MHz
50-860
S21-Gain dB
11.3
50 MHz
S21-Gain
dB
11.0
860 MHz
S11-Input Return Loss
dB
-12
S22-Output Return Loss
dB
-12
Output IP3
dBm
41
Output IP2
dBm
65
Noise Figure
dB
4.5
Output P1dB
dBm
23
71.7 dBmV
CSO dBc -63 110 channels, 50-750 MHz, 40 dBmV
output/channel
CSO dBc -58 135 channels, 50-860 MHz, 39 dBmV
output/channel
CTB dBc -61 110 channels, 50-750 MHz, 40 dBmV
output/channel
CTB dBc -59 135 channels, 50-860 MHz, 39 dBmV
output/channel
Operating Current Range
mA
240
300
360
Vdd = 5.0 V
Supply Voltage
V
5
Test conditions unless otherwise noted. T = 25C, Vdd = 5.0 V, 75
system.
1. Typical specifications reflect AH22 measured with external matching circuits.
2. OIP3 measured with 2 tones at an output power of 8 dBm/tone separated by 10 MHz. The suppression on the largest IM3 product is used to calculate OIP3 using a 2:1 slope rule.
The Communications Edge
TM
WJ Communications, Inc. Phone: 1-800-WJ1-4401 FAX: 408-577-6620 e-mail: sales@wj.com Web site: www.wj.com
April 2002
AH22
Push-Pull Circuit: 50-860 MHz
Performance Charts
Typical Performance (75 Ohm System)
Frequency
50 MHz
450 MHz
750 MHz 860 MHz
Magnitude S21
11.7 dB
11.7 dB
11.4 dB
11.3 dB
Magnitude S11
-11.0 dB
-12.3 dB
-11.7 dB
-15.6 dB
Magnitude S22
-13.2 dB
-11.9 dB
-11.4 dB
-12.3 dB
OIP2
72.0 dBm
70 dBm
72 dBm
70 dBm
OIP3
42.0 dBm
43 dBm
41 dBm
40 dBm
Bias
Vds = 5 V, Id = 300 mA
FR4 Board Layout (T = 28 Mils to ground plane)
Schematic
RF OUT
DC +5 V
DC +5 V
RF IN
C = 1.5 pF
C = 100 pF
C = 1000 pF
C = 1000 pF
C = 100 pF
C = 1.5 pF
R = 560
R = 560
L = 470 nH
L = 470 nH
L = 5.6 nH
L = 5.6 nH
4 or more Via
Grounds req.
6 turns bifilar
wire around
ferrite core
6 turns bifilar
wire around
ferrite core
Or
MaCOM
ETCI-1-13
SMT balun
Core: TDK H5C2-T3.1-1.3-1.3
Wire: MWS B2383211
Interior Trans. Lines Z = 37.5 Ohm
1008 Package
L = 5.6 nH
0603 Package
R = 560 ohm
0603 Package
C = 1000 pF
0603 Package
C = 1000 pF
0603 Package
C = 100 pF
0603 Package
C = 100 pF
0603 Package
R = 560 ohm
1008 Package
L = 5.6 nH
0402 Package
C = 1.5 pF
0603 Package
C = 1000 pF
0603 Package
C = 1000 pF
L = 470 nH
Coilcraft
1008 Package
L = 470 nH
Coilcraft
1008 Package
+5 V
+5 V
AH22
CSO
-63 dBc
750 MHz
110 channels
+40 dBmV/ch, Flat
CTB
-61 dBc
750 MHz
110 channels
+40 dBmV/ch, Flat
XMOD
-61 dBc
750 MHz
110 channels
+40 dBmV/ch, Flat
Multi-channel Measurements
AH22
Note: Balun and board losses have not been extracted but typically account for 0.4 dB loss midband and 1.1 dB loss at 860 MHz.
Frequency (MHz)
0
100 200
300 400 500
600
700 800
900 1000
S-Parameters
15
10
5
0
-5
-10
-20
-15
S21
S11
S22
Magnitude (dB)
Intercept Point (dBm)
Frequency (MHz)
0
100 200
300 400 500
600 700 800
900 1000
Linearity vs. Frequency
80
70
60
40
50
30
10
20
0
V = 5 V
I = 290 mA
OIP3
OIP2
WJ Communications, Inc. Phone: 1-800-WJ1-4401 FAX: 408-577-6620 e-mail: sales@wj.com Web site: www.wj.com
April 2002
Dual Push-Pull Circuit: 50-860 MHz
Performance Charts
Typical Performance (75 Ohm System)
Frequency
50 MHz
450 MHz
750 MHz 860 MHz
Magnitude S21
13.3 dB
13.3 dB
12.5 dB
12.3 dB
Magnitude S11
-21.0 dB
-18.0 dB
-21.0 dB
-16.2 dB
Magnitude S22
-16.4 dB
-18.2 dB
-20.2 dB
-17.1 dB
OIP2
73.0 dBm
72 dBm
75 dBm
76 dBm
OIP3
45.0 dBm
49 dBm
46 dBm
47 dBm
Bias
Vds = 5 V, Id = 600 mA
FR4 Board Layout (T = 28 Mils to ground plane)
Schematic
RF OUT
DC +5 V
DC +5 V
RF IN
L = 3.3 nH
L = 3.3 nH
C = 100 pF
C = 1000 pF
C = 1000 pF
C = 1000 pF
C = 1000 pF
R = 560
L = 470 nH
L = 470 nH
6 turns bifilar
wire around
ferrite core
6 turns bifilar
wire around
ferrite core
or
MaCOM
ETCI-1-13
Surface Mount
balun
Interior Trans. Lines Z = 37.5 Ohm
Note: Balun and board losses have not been extracted but typically account for 0.4 dB loss midband and 1.1 dB loss at 860 MHz.
0603 Package
L = 3.3 nH
0603 Package
L = 3.3 nH
0603 Package
R = 560 ohm
0603 Package
R = 560 ohm
0603 Package
C = 1000 pF
0603 Package
C = 1000 pF
0603
Package
C = 100 pF
0603
Package
C = 100 pF
0603 Package
C = 1000 pF
0603 Package
C = 1000 pF
L = 470 nH
Coilcraft
1008 Package
L = 470 nH
Coilcraft
1008 Package
+5 V
+5 V
C = 100 pF
R = 560
GND
8 or more Via
Grounds req.
Core: TDK H5C2-T3.1-1.3-1.3
Wire: MWS B2383211
AH22
AH22
Frequency (MHz)
0
100 200
300 400 500
600
700 800
900 1000
S-Parameters
15
10
5
0
-5
-10
-20
-25
-15
S11
Magnitude (dB)
Intercept Point (dBm)
Frequency (MHz)
0
100 200
300 400 500
600 700 800
900 1000
Linearity vs. Frequency
80
70
60
40
50
30
20
V = 5 V
I = 600 mA
OIP3
OIP2
S21
S22
WJ Communications, Inc. Phone: 1-800-WJ1-4401 FAX: 408-577-6621 e-mail: sales@wj.com Web site: www.wj.com
April 2002
Outline Drawing
Land Pattern
Mounting Configuration
WJ Communications, Inc. Phone: 1-800-WJ1-4401 FAX: 408-577-6620 e-mail: sales@wj.com Web site: www.wj.com
April 2002
AH22
Typical Test Data
S-Parameters, single unmatched device (Vdd = +5 V, Ids = 150 mA, T = 22C, Z = 75
)
Freq. (MHz)
S11 (dB)
S11 Ang
S21 (dB)
S21 Ang
S12 Mag
S12 Ang
S22 (dB)
S22 Ang
10
-12.892
-2.166
17.059
179.076
0.050
-0.502
-36.560
-65.063
50
-12.870
-11.286
17.067
176.030
0.051
0.301
-37.190
-72.212
100
-12.672
-23.045
17.043
172.073
0.051
0.703
-31.958
-82.160
150
-12.356
-33.366
16.967
168.036
0.051
0.964
-28.320
-90.551
200
-11.872
-42.817
16.894
164.326
0.051
1.258
-26.196
-94.845
250
-11.476
-52.297
16.801
160.805
0.051
1.800
-24.523
-100.971
300
-11.056
-60.214
16.723
157.092
0.052
1.771
-23.104
-103.565
350
-10.449
-67.937
16.619
153.456
0.053
1.858
-21.819
-105.985
400
-9.960
-74.745
16.514
149.951
0.053
2.304
-20.846
-108.359
450
-9.505
-80.896
16.376
146.241
0.054
1.529
-20.003
-110.824
500
-9.051
-86.735
16.220
142.910
0.055
1.348
-19.114
-114.155
550
-8.599
-92.061
16.067
139.571
0.056
1.105
-18.350
-115.873
600
-8.188
-97.267
15.918
136.143
0.057
0.884
-17.773
-119.083
650
-7.855
-101.536
15.725
132.858
0.057
-0.090
-17.233
-120.438
700
-7.497
-106.143
15.515
129.818
0.058
-0.565
-16.631
-122.901
750
-7.154
-110.057
15.370
126.785
0.058
-0.719
-16.162
-125.464
800
-6.889
-114.001
15.171
123.633
0.059
-1.741
-15.749
-127.412
850
-6.565
-117.238
14.956
120.846
0.059
-2.484
-15.276
-129.278
900
-6.298
-120.930
14.785
118.193
0.060
-3.030
-14.928
-131.457
950
-6.104
-124.039
14.586
115.177
0.060
-4.081
-14.636
-133.161
1000
-5.852
-127.205
14.378
112.740
0.061
-4.826
-14.283
-135.168
This document contains information on a new product.
Specifications and information are subject to change without notice.
Caution! ESD sensitive device.
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