WJ Company AH1-PCB, AH1 Datasheet
WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:408-577-6620 • e-mail:sales@wj.com • Web site: www.wj.com February 2002
AH1
Product Description
The AH1 is a high dynamic range amplifier
packaged in a low cost SOT-89 surface mount
package. The combination of low noise figure
and high output IP3 at the same bias point
makes it ideal for receiver and transmitter
applications. The AH1 achieves +41 dBm
OIP3 at a mounting temperature of 85˚C with
an associated MTBF of >100 years
5
. All devices
are 100% RF and DC tested.
The product is targeted for applications where
high linearity is required.
Product Features
•
250-3000 MHz
•
+
41 dBm Output IP3
•
2.7 dB Noise Figure
•
13.5 dB Gain
•
+
21 dBm P1dB
•
MTBF >100 Years
•
SOT-89 SMT Package
•
Single +5 V Supply
Functional Diagram
High Dynamic Range Amplifier
Absolute Maximum Ratings
Parameter Rating
Operating Case Temperature -40 to +85°C
Storage Temperature -55 to +125 °C
Supply Voltage +6.0 V
Input RF Power (continuous) +10 dBm
Operation of this device above any of these parameters may cause per manent damage.
Ordering Information
Part No. Description
AH1 High Dynamic Range Amplifier
(Available in tape and reel)
AH1-PCB Fully Assembled Application Circuit
The Communications Edge
™
Specifications
Parameter Units Min. Typical Max.
Frequency Range MHz 250-3000
S21 - Gain dB 12.4 13.5
S11 - Input Return Loss
3
dB -8
S22 - Output Return Loss dB -15
Output IP3
2
dBm +37 +41
Output P1dB dBm +21
Noise Figure dB 2.7
Operating Current Range mA 120 150 180
Supply Voltage V 5
Test conditions unless otherwise noted.
1.T = 25°C, Vdd = 5.0, Freq = 800 MHz, 50 ohm system.
2. OIP3 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 OIP3 using a 2:1 slope rule.
3. S21 and S11 can be improved in the band of interest using a single input shunt microstrip to
ground.
4. Degradation of OIP3 occurs at low temperatures. Minimum typical OIP3 at -40˚C is +35dBm.
5. MTBF calculated with channel temperature at 155˚C.
Typical Parameters
Parameter Units Typical
Frequency MHz 900 1900
S21 dB 14.3 12.6
S11 dB -16.5 -14.5
S22 dB -13.9 -11.7
Output IP3 dBm +41.0 +41.0
Output P1dB dBm +21.2 +21.0
Noise Figure dB 2.5 2.5
Typical parameters reflect performance in an application circuit.
Actual Size
4
123
Function Pin No.
Input 1
Ground 2
Output Bias 3
Ground 4
WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com February 2002
AH1
Performance Charts (Vds = 5.0 V, Ids = 150 mA, T = 22°C, unmatched device in a 50 ohm system)
Thermal Specifications
Parameter Rating
Operating Case Temperature -40 to +85°C
Thermal Resistance (Maximum) 59°C/W
Junction Temperature +155°C
(Recommended Maximum)
Notes:
1.Thermal Resistance determined at Maximum Tab Temperature and Maximum Power
Dissipation.
2. Recommended Maximum Junction Temperature insures a MTBF of 1 million hours.
3. Refer to WJ Application Note “AH1 Temperature Effects on Reliability” for more information.
OIP3 vs. Frequency
45
40
35
30
OIP3 (dBm)
25
20
500 1000 1500 2000 2500 35003000
Frequency (MHz)
OIP3 vs. Temperature
43
42
41
40
OIP3 (dBm)
39
38
37
-50 -25 0 25 50 10075
Frequency = 800MHz Frequency = 800MHz
Temperature (C)
Gain vs. Power Out
14.5
14.0
13.5
Gain (dB)
13.0
12.5
12.0
2.5 4.5 6.5 8.5 12.510.5 14.5 16.5
75% Idss
100% Idss
Output Power (dBm) Output Power (dBm)
50% Idss
Gain vs. Frequency* Input/Output Return Loss*
20
15
10
Gain (dB)
5
0
0 500 1000 1500 2000 2500 3000
* without matching circuit * without matching circuit
Frequency (MHz)
0
-5
-10
-15
dB
-20
-25
-30
-35
0 500 1000 1500 25002000 3000
Gain vs. Temperature
15.0
14.5
14.0
13.5
Gain (dB)
13.0
12.5
12.0
-40 -20 0 20 40 60 80
Temperature (C)
OIP3 Lead Pull Circles
Output IP3 vs. Power Out
45
40
35
30
Output IP3 (dBm)
25
20
2.5 4.5 6.5 8.5 12.510.5 14.5 16.5
100% Idss
75% Idss
50% Idss
Frequency = 900 MHzFrequency = 900 MHz
S11
S22
Frequency (MHz)
IP3 = 35
36
37
38
39
41
1.5
2.0
3.0
4.0
VSWR = 5.0
Frequency = 900 MHz
Vds = 5.0 V, 100% Idss, T = 22°C
10
MTBF vs. Temperature
9
8
10
7
10
MTBF (hours)
Ground Tab
6
10
5
10
50 75 100 125 150 175 200
Temperature (°C)
Junction
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