AH31
Product Features
• • • • • • •
The Communications Edge TM
High Dynamic Range IF Amplifier
Product Information
Product Description
The AH31 is a high dynamic range amplifier in a low-cost surface-mount package. The combination of low noise figure, high gain, and high output IP3 is ideal as an IF amplifier for receiver and transmitter applications. The device combines dependable performance with consistent quality to maintain MTTF values exceeding 1000 years at mounting temperatures of +85°C and is available in both the standard SOT-89 package and the environmentally-friendly lead-free/green/RoHS-compliant and green SOT-89 package. All devices are 100% RF & DC tested. The MMIC amplifier based on GaAs MESFET technology can be configured for IF and RF applications with various current and next generation wireless technologies.
Functional Diagram
GND 4
50 – 1000 MHz 19 dB Gain +22 dBm P1dB +42 dBm OIP3 1.8 dB Noise Figure Single Voltage Supply (+5 V) Lead-free/Green/RoHScompliant SOT-89 Package • MTTF > 1000 years
1 RF IN
2 GND
3 RF OUT
Function Input Output/Bias Ground
Pin No. 1 3 2, 4
Applications
• High linearity and low-noise amplifier following a mixer • High performance amplifier in IF path of TX/RX systems
Specifications (1)
Parameter
Operational Bandwidth Test Frequency Gain Output P1dB Output IP3 (2) Supply Voltage Operating Current Range
Typical Performance (3)
Units Min
MHz MHz dB dBm dBm V mA 50 240 19 +22 +42 +5 150
Typ
Max
1000
Parameter Units
Frequency S21 S11 S22 Output P1dB Output IP3 Noise Figure MHz dB dB dB dBm dBm dB 75 19 -25 -25 +22 +42 2.4 170 19 -13 -20 +22 +42 1.8
Typical
240 19 -15 -17 +22 +42 1.8 500 18 -15 -10 +22 +42 1.7 900 16.8 -14 -11 +21 +41 2.1
+37 120
180
1. Test conditions : T = 25ºC, Vdd = +5 V, 50 Ω system. 2. 3OIP measured with two tones at an output power of +10 dBm/tone separated by 1 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 an application circuit.
Ordering Information Absolute Maximum Rating
Parameter
Operating Case Temperature Storage Temperature DC Voltage RF Input Power (continuous) Junction Temperature -40 to +85 °C -55 to +150 °C +6 V 4 dB above Input P1dB +220° C
Part No.
AH31 AH31-G AH31-PCB75 AH31-PCB170 AH31-PCB240 AH31-PCB500
Description
High Dynamic Range IF Amplifier
(leaded SOT-89 Pkg)
Rating
High Dynamic Range IF Amplifier
(lead-free/green/RoHS-compliant SOT-89 Pkg)
65 – 85 MHz Fully Assembled Evaluation Board 155 – 185 MHz Fully Assembled Evaluation Board 220 – 260 MHz Fully Assembled Evaluation Board 450 – 550 MHz Fully Assembled Evaluation Board
Specifications and information are subject to change without notice
Operation of this device above any of these parameters may cause permanent damage.
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail:
[email protected] • Web site: www.wj.com
September 2004
AH31
The Communications Edge TM
High Dynamic Range IF Amplifier
Product Information
Typical Device Data
S-parameters (Vd = +5 V, Id = 150 mA, unmatched 50 Ω system). • 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 Ω. Any deviation from this can affect the linearity IP3 performance for the device.
S21 and Maximum Stable Gain
0.8
S11
1.0
S22
1.0
6 0.
6 0.
Swp Max 3GHz
2. 0
0. 8
25
Swp Max 3GHz
2. 0
0 3.
S21 and MSG (dB)
Maximum Stable Gain
19
0 4.
S21
10.0 0.2 0.4 0.6 0.8 1.0 2.0 3.0 4.0 5.0
10 .0
16
3 GHz
3 GHz
0
10.0
0.2
0.4
0.6
0.8
1.0
4.0
2.0
3.0
5.0
0
2 GHz
2 -0.
1 GHz
.0 -2
-0 .6
-0 .8
0
0.5
1
-1.0
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”
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail:
[email protected] • Web site: www.wj.com
-1.0
1.5 Frequency (GHz)
2
2.5
3
Swp Min 0.05GHz
-0 .6
-0.8
.0 -2
10
.4 -0
1 GHz
.4 -0
September 2004
-3 .0
-3 .0
2 GHz
Swp Min 0.05GHz
-4 .0 -5. 0
-4 .0 -5. 0
13
2 -0 .
-10. 0
0. 2
5.0
0. 4
-10.0
0. 4
22
0 3.
0 4.
5. 0
0 .2
10.0
AH31
The Communications Edge TM
High Dynamic Range IF Amplifier
Product Information
Application Circuit: 65 – 85 MHz (AH31-PCB75)
VS = +5 V ID = 150 mA
Typical Performance Frequency 75 MHz S21 - Gain 19 dB S11 -25 dB S22 -25 dB Output P1dB +22 dBm Output IP3 +42 dBm Noise Figure 2.4 dB Bias +5 V @ 150 mA
C5 .018 µF 0603 C1 .018 µF RF IN 0603 L1 220 nH 0603 AH31 R1 1.0 Ω 0603 R2 0Ω 0603 C4 .018 µF 0603 L2 330 nH 0805
RF OUT
C3 12 pF 0603
Notes: 1. The amplifier should be connected direct.