AH22S
Product Features
x
50 – 1000 MHz
x
±0.2 dB Gain Flatness
x
+25 dBm P1dB
x
-74 dBc CTB / CSO
+39dBmV/channel, 77 channels
The Communications Edge
TM
Product Information
High Dynamic Range CATV Amplifier
Product Description
The AH22S is a high dynamic range amplifier targeting
cable TV markets. The combination of gain flatness,
high linearity, and bandwidth makes it ideal for CATV
distribution, cable modem, and laser diode driver
applications.
The device uses two matched devices and is ideal for
operation in a push-pull configuration to achieve high
second order linearity. A mature and reliable GaAs
MESFET technology is employed to maximize linearity
at low power dissipation. The dual amplifier is housed in
an industry standard surface-mount SOIC-8 package with
all devices being 100% RF and dc tested. This device is
available in a lead-free/green/RoHS-compliant package
with NiPdAu plating material on the leads.
It is
compatible with both lead-free and lead soldering
processes.
Functional Diagram
1
2
3
4
8
7
6
5
x
+43 dBm Output IP3
x
+77 dBm Output IP2
x
Matched amplifiers for a push-
pull configuration
x
+5V Single Positive Supply
x
MTTF > 1000 years
Applications
x
CATV Head End Equipment
x
CATV Line Amplifiers
x
FTTH Repeaters
Function
Amp 1 Input
Amp 2 Input
Amp 2 Output
Amp 1 Output
Ground
Pin No.
1
4
5
8
2, 3, 6, 7,
Backside
paddle
Single-ended Device Specifications
(1)
Parameter
Operational Bandwidth
Test Frequency
Gain
Output IP3
(2)
Device Current
Device Voltage
¡
Typical Performance
(3)
Parameter
Frequency
Gain
(4)
Input Return Loss
Output Return Loss
CTB
(5)
CSO
(5)
XMOD
(5)
Output P1dB
Output IP2
(6)
Output IP3
(7)
Noise Figure
Device Bias
Units Min
MHz
MHz
dB
dBm
mA
V
50
13
+37
120
Typ
800
14.5
+40
160
5
Max
1000
Units
MHz
dB
dB
dB
dBc
dBc
dBc
dBm
dBm
dBm
dB
V
50
11.3
10.6
17.1
-75
-73
-63
+25.9
+79
+43
6.1
Typical
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
+5 V @ 320 mA
190
1. Test conditions unless otherwise noted: 25 ºC, Vd = +5 V, 800 MHz on each individual single-
branch amplifier in a 50 test fixture.
2. 3OIP measured with two tones at an output power of +5 dBm/tone separated by 10 MHz. The
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.
3. Typical parameters reflect performance in a push-pull application circuit as shown on page 3. Note
that the feedback resistance values are R1 = R2 = 560 .
4. 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.
5. Measured at +39 dBmV/channel, 77 channels Flat Loading.
6. OIP2 is measured at f1 + f2 at +8 dBm / tone.
7. OIP3 is measured at 8 dBm / tone with 10 MHz spacing.
¡
Absolute Maximum Rating
Operating Case Temperature
Storage Temperature
Supply Voltage
RF Input Power (continuous)
Junction Temperature
Parameter
-40 to +85
qC
-55 to +150
qC
+6 V
+13 dBm
+220
qC
Rating
Ordering Information
Part No.
AH22S-G
AH22S-PCB
Description
(lead-free/green/RoHS-compliant SOIC8 Pkg)
High Dynamic Range CATV Amplifier
Push-pull CATV Evaluation Board
Operation of this device above any of these parameters may cause permanent damage.
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
Page 1 of 4 April 2006
AH22S
The Communications Edge
TM
Product Information
High Dynamic Range CATV Amplifier
Typical Device Data – 50: Z
o
S-Parameters (V
ds
= +5 V, I
ds
= 160 mA, T = 25 C, unmatched 50 ohm system, calibrated to device leads)
This data represents a single-ended amplifier in the AH22S, with there being two matched amplifiers inside the package.
Freq (MHz)
S11 (dB)
S11 (ang)
S21 (dB)
S21 (ang)
S12 (dB)
S12 (ang)
S22 (dB)
S22 (ang)
50
-7.94
-19.61
15.23
168.38
-21.82
1.63
-15.80
-30.57
100
-8.21
-19.49
15.08
167.60
-21.70
-2.29
-16.57
-23.98
150
-8.22
-22.08
15.09
165.36
-21.79
-4.14
-16.83
-22.42
200
-8.25
-25.88
15.06
162.70
-21.72
-5.10
-17.08
-22.40
250
-8.21
-29.76
15.07
160.34
-21.71
-6.46
-17.15
-24.78
300
-8.23
-34.25
15.03
157.80
-21.68
-7.08
-17.08
-26.62
350
-8.23
-38.03
14.97
155.21
-21.61
-8.03
-17.41
-28.61
400
-8.26
-42.15
14.91
152.90
-21.62
-8.74
-17.56
-31.59
450
-8.21
-47.04
14.90
150.12
-21.57
-8.94
-17.49
-34.08
500
-8.17
-51.60
14.89
147.43
-21.58
-9.79
-17.75
-36.18
550
-8.11
-55.76
14.92
145.05
-21.53
-10.47
-17.80
-38.05
600
-8.14
-60.10
14.80
142.10
-21.47
-11.19
-18.07
-40.53
650
-8.13
-65.20
14.76
139.29
-21.49
-12.18
-18.25
-43.17
700
-8.02
-69.16
14.70
136.86
-21.41
-12.79
-18.42
-46.67
750
-8.04
-73.20
14.70
134.04
-21.38
-13.38
-18.69
-48.74
800
-8.02
-77.63
14.64
131.89
-21.30
-14.62
-18.86
-51.10
850
-7.98
-82.46
14.59
128.68
-21.26
-15.36
-18.96
-55.03
900
-7.91
-87.02
14.53
125.87
-21.16
-16.42
-19.19
-56.96
950
-7.86
-90.65
14.45
123.67
-21.12
-17.35
-19.48
-59.54
1000
-7.80
-94.58
14.39
121.33
-21.13
-18.12
-19.74
-63.18
¢
¢
Typical Device Data – 37.5: Z
o
S-Parameters (V
ds
= +5 V, I
ds
= 160 mA, T = 25 C, unmatched 37.5 ohm system, calibrated to device leads)
This data represents a single-ended amplifier in the AH22S, with there being two matched amplifiers inside the package.
Freq (MHz)
S11 (dB)
S11 (ang)
S21 (dB)
S21 (ang)
S12 (dB)
S12 (ang)
S22 (dB)
S22 (ang)
50
-4.93
-12.81
14.35
170.16
-22.71
3.41
-9.19
-14.24
100
-5.09
-13.16
14.22
169.21
-22.57
-0.68
-9.40
-11.89
150
-5.12
-15.14
14.24
167.09
-22.64
-2.42
-9.51
-11.83
200
-5.17
-17.82
14.22
164.62
-22.55
-3.18
-9.61
-12.33
250
-5.18
-20.59
14.25
162.52
-22.53
-4.28
-9.66
-13.85
300
-5.23
-23.68
14.24
160.24
-22.47
-4.63
-9.66
-15.12
350
-5.28
-26.40
14.20
157.86
-22.38
-5.38
-9.83
-16.35
400
-5.36
-29.29
14.17
155.77
-22.36
-5.87
-9.95
-17.91
450
-5.39
-32.75
14.19
153.27
-22.28
-5.79
-9.96
-19.42
500
-5.45
-36.09
14.22
150.79
-22.26
-6.43
-10.12
-20.68
550
-5.48
-39.19
14.28
148.61
-22.17
-6.90
-10.17
-21.94
600
-5.58
-42.45
14.20
145.83
-22.07
-7.46
-10.35
-23.33
650
-5.69
-46.33
14.21
143.20
-22.04
-8.27
-10.51
-24.87
700
-5.70
-49.50
14.18
140.95
-21.93
-8.70
-10.66
-26.61
750
-5.81
-52.71
14.22
138.23
-21.86
-9.19
-10.83
-27.82
800
-5.92
-56.28
14.21
136.19
-21.73
-10.32
-10.97
-29.22
850
-6.02
-60.34
14.21
133.11
-21.64
-10.93
-11.15
-31.33
900
-6.10
-64.31
14.21
130.38
-21.49
-11.90
-11.32
-32.62
950
-6.17
-67.57
14.17
128.23
-21.41
-12.79
-11.55
-33.86
1000
-6.26
-71.12
14.16
125.92
-21.37
-13.52
-11.80
-35.45
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
Page 2 of 4 April 2006
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
AH22S
The Communications Edge
TM
Product Information
High Dynamic Range CATV Amplifier
This package is lead-free/green/RoHS-compliant. The plating material on the leads is NiPdAu. It is compatible with both lead-free
(maximum 260
qC
reflow temperature) and lead (maximum 245
qC
reflow temperature) soldering processes.
AH22S-G (Lead-Free Package) Mechanical Information
Outline Drawing
Product Marking
The component will be marked with an
“AH22SG” designator with an alphanumeric lot
code on the top surface of the package. The
obsolete tin-lead package is marked with an
“AH22S”
designator followed by an
alphanumeric lot code.
Tape and reel specifications for this part are
located on the website in the “Application
Notes” section.
ESD / MSL Information
ESD Rating:
Value:
Test:
Standard:
ESD Rating:
Value
Test:
Standard:
Class 1B
Passes from 500 to 1000 V
Human Body Model (HBM)
JEDEC Standard JESD22-A114
Class IV
Passes greater than 1000 V
Charge Device Model (CDM)
JEDEC Standard JESD22-C101
¤
MSL Rating: Level 2 at +260 C convection reflow
Standard:
JEDEC Standard J-STD-020A
Functional Pin Layout
Land Pattern
Pin
1
2
3
4
5
6
7
8
Function
RF input (Amp1 input)
Ground
Ground
RF input (Amp2 input)
RF output (Amp2 output)
Ground
Ground
RF output (Amp1 output)
The backside paddle is the Source and should be
grounded for thermal and electrical purposes.
Thermal Specifications
Parameter
Operating Case Temperature
Thermal Resistance
(1)
, Rth
Junction Temperature
(2)
, Tj
-40 to +85
qC
28
qC/W
130
qC
Mounting Config. Notes
1000
MTTF vs. GND Tab Temperature
1.
Rating
100
2.
3.
4.
Notes:
1. The thermal resistance is referenced from the hottest
part of the junction to ground tab underneath the
device.
2. This corresponds to the typical biasing condition of
+5V, 320 mA at an 85 C case temperature. A
minimum MTTF of 1 million hours is achieved for
junction temperatures below 160 C.
¤
¤
10
5.
1
60
70
80
90
100
110
Tab Temperature (°C)
6.
7.
8.
9.
Ground / thermal vias are critical for the proper performance
of this device. Vias should use a .35mm (#80/.0135” )
diameter drill and have a final plated through diameter of
.25mm (.010” )
Add as much copper as possible to inner and outer layers near
the part to ensure optimal thermal performance.
To ensure reliable operation, device ground paddle-to-ground
pad solder joint is critical.
Add mounting screws near the part to fasten the board to a
heatsink. Ensure that the ground / thermal via region contacts
the heatsink.
For optimal thermal performance, expose soldermask on
backside where it contacts the heatsink.
RF trace width depends upon the PC board material and
construction.
Use 1 oz. Copper minimum.
If the PCB design rules allow, ground vias should be placed
under the land pattern for better RF and thermal performance.
Otherwise ground vias should be placed as close to the land
pattern as possible.
All dimensions are in mm. Angles are in degrees.
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
Page 4 of 4 April 2006
