AH31
High Dynamic Range IF Amplifier
Product Features Product Description Functional Diagram
GND
The AH31 is a high dynamic range amplifier in a low-cost
50 1000 MHz
4
surface-mount package. The combination of low noise
19 dB Gain
figure, high gain, and high output IP3 is ideal as an IF
+22 dBm P1dB
amplifier for receiver and transmitter applications.
+42 dBm OIP3
The device combines dependable performance with
1.9 dB Noise Figure
consistent quality to maintain MTTF values exceeding
1 23
Single Voltage Supply (+5 V) 1000 years at mounting temperatures of +85 C and is
RF IN GND RF OUT
available in the environmentally-friendly lead-free/green
Lead-free/Green/RoHS-
/RoHS-compliant SOT-89 package. All devices are 100%
compliant SOT-89 Package Function Pin No.
RF & DC tested.
Input 1
MTTF > 1000 years
Output/Bias 3
The MMIC amplifier based on GaAs MESFET technology
Ground 2, 4
can be configured for IF and RF applications with various
Applications
current and next generation wireless technologies.
High linearity and low-noise
amplifier following a mixer
High performance amplifier
in IF path of TX/RX systems
(1) (3)
Specifications Typical Performance
Parameter Units Min Typ Max Parameter Units Typical
Operational Bandwidth MHz 50 1000 Frequency MHz 75 170 240 500 900
Test Frequency MHz 240 S21 dB 19.5 19.2 19.3 18.4 16.6
(3)
Gain dB S11 dB -21 -13 -19 -13 -14
19
Output P1dB dBm +22 S22 dB -17 -14 -13 -9.2 -9
(2)
Output IP3 dBm +37 +42 Output P1dB dBm +22 +21 +22 +21 +20
Supply Voltage V +5 Output IP3 dBm +42 +42 +42 +41 +41
Operating Current Range mA 120 180 Noise Figure dB 2.6 2.3 2.2 1.9 2.2
150
3. Typical parameters reflect performance in an application circuit.
1. Test conditions : T = 25 C, Vdd = +5 V, 50 system.
2. 3OIP measured with two tones at an output power of +5 dBm/tone separated by 1 MHz. The
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.
Ordering Information
Absolute Maximum Rating
Part No. Description
Parameter Rating
High Dynamic Range IF Amplifier
AH31-G
Storage Temperature -55 to +150 C
(lead-free/green/RoHS-compliant SOT-89 Pkg)
DC Voltage +6 V
AH31-PCB75 65 85 MHz Fully Assembled Evaluation Board
RF Input Power (continuous) 4 dB above Input P1dB
AH31-PCB170 155 185 MHz Fully Assembled Evaluation Board
Junction Temperature
+160 C
AH31-PCB240 220 260 MHz Fully Assembled Evaluation Board
Thermal Resistance, Rth 59 C / W AH31-PCB500 450 550 MHz Fully Assembled Evaluation Board
Operation of this device above any of these parameters may cause permanent damage. Standard T/R size = 1000 pieces on a 7 reel.
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, www.TriQuint.com Page 1 of 7 January 2008
AH31
High Dynamic Range IF Amplifier
Typical Device Data
S-parameters (Vd = +5 V, Id = 150 mA, unmatched 50 system).
S11 S22
Gain and Max. Stable Gain
Swp Max Swp Max
24
1GHz 1GHz
Maximum Stable Gain
22
20
S21
18
16
14
0 0.2 0.4 0.6 0.8 1
Frequency (GHz)
Swp Min Swp Min
0.01GHz 0.01GHz
Notes:
Measurements are shown for an unmatched packaged device with the data being de-embedded to the device leads.
The amplifier requires a matching network at the input for proper operation. The amplifier is intrinsically well matched at the
output and ideally should look into 50 . Any deviation from this can affect the linearity IP3 performance for the device.
For a tuned circuit for a particular frequency, it is expected that actual gain will be higher, up to the maximum stable gain. The
maximum stable gain is shown in the dashed red line.
The impedance plots are shown from 250 1000 MHz, with markers placed at 0.25 1.0 GHz in 0.25 GHz increments.
Application Circuit PC Board Layout
Circuit Board Material: .014 FR-4, 4 layers (other layers added for rigidity), .062 total thickness, 1 oz copper
Microstrip line details: width = .024, spacing = .036
Typical Device Data
S-Parameters (V = +5 V, I = 150 mA, T = 25 C, calibrated to device leads)
D D
Freq (MHz) S11 (dB) S11 (ang) S21 (dB) S21 (ang) S12 (dB) S12 (ang) S22 (dB) S22 (ang)
50 -2.72 -5.46 17.01 175.91 -28.54 6.89 -7.44 -5.46
100 -2.77 -9.52 16.94 172.89 -28.42 8.53 -7.56 -7.93
200 -2.81 -18.01 16.86 166.99 -27.86 14.09 -7.59 -13.42
300 -2.87 -26.32 16.74 161.33 -27.14 18.38 -7.63 -19.94
400 -2.87 -35.19 16.64 155.16 -26.32 21.01 -7.83 -26.57
500 -2.95 -43.58 16.50 149.45 -25.45 22.42 -7.92 -32.04
600 -2.91 -51.71 16.40 143.72 -24.66 22.73 -8.00 -38.12
700 -2.99 -60.03 16.21 138.07 -23.89 21.29 -8.31 -45.01
800 -3.03 -67.73 16.05 132.16 -23.27 19.94 -8.46 -50.89
900 -3.14 -75.45 15.81 126.99 -22.71 17.74 -8.77 -57.30
1000 -3.22 -82.88 15.55 121.64 -22.17 15.73 -8.95 -63.63
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, www.TriQuint.com Page 2 of 7 January 2008
10.0
10.0
-0.2 5.0
-0.2 5.0
4.0
4.0
3 0
.
3.0
-0.4
-0.4
2.0
2.0
-0.6
-0.6
-0.8
-0.8
S21 and MSG (dB)
0
0.2
0.4
0.6
0.8
-1.0 1.0
1.0
2.0
3.0
4.0
5.0
10.0
0
0.2
0.4
0.6
0.8
-1.0 1.0 1.0
2.0
3.0
4.0
5.0
10.0
0.8
0.8
0.6
0.6
-2.0
-2.0
0.4
0.4
-3.0
-3.0
-4.0
-4.0
-5.0 0.2
-5.0 0.2
-10.0
-10.0