AH31
High Dynamic Range IF Amplifier
Product Information
Product Features
• 50 – 1000 MHz
• ISO & EPC compliant
• 19 dB Gain
• +22 dBm P1dB
• +42 dBm OIP3
• 1.8 dB Noise Figure
• Single Voltage Supply (+5 V)
• MTTF > 100 years
• SOT-89 SMT Package
Applications
• RFID: HF, UHF, microwave
• Readers
• Industrial
• Portable
• Handheld
Product Description
Functional Diagram
The AH31 is a high dynamic range amplifier in a
low-cost surface-mount package. Its robustness and
ease of use make it an ideal candidate for the core of any
RFID reader application. It is compliant with EPC and ISO
standards. 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 100
years at mounting temp eratures of +85°C and is
housed in a SOT-89 industry-standard SMT package.
The broadband MMIC amplifier can be directly applied to
various current and next generation RFID technologies
such as EPC, ISO, ETSI, and ANSI. Their small size
makes them ideal for PCMCIA applications.
GND
4
1
RF IN
2
GND
3
RF OUT
Function
Input
Output/Bias
Ground
Pin No.
1
3
2, 4
Specifications
Parameter
Frequency Range
Gain
Input Return Loss
Output Return Loss
Output P1dB
Output IP3 (2)
Output IP3
(50 Ω test fixture, 800, 810 MHz)
Noise Figure
Supply Voltage
Operating Current Range
Thermal Resistance
Junction Temperature (3)
Units
MHz
dB
dB
dB
dBm
dBm
Min
50
dBm +37
dB
V
mA 120
°C / W
°C
Typ
240
19
15
17
+22
+42
1.8
+5
150
Max
1000
180
59
160
Test conditions unless otherwise noted.
1. T = 25ºC, Vdd = +5 V, Frequency = 240 MHz in a tuned application circuit.
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. The junction temperature ensures a minimum MTTF rating of 1 million hours of usage.
Typical Performance
Parameter Units
Typical
Frequency
MHz 75 170 240 500 900
S21
dB 19 19 19 18 16.8
S11
dB -25 -13 -15 -15 -14
S22
dB -25 -20 -17 -10 -11
Output P1dB dBm +22 +22 +22 +22 +21
Output IP3
dBm +42 +42 +42 +42 +41
Noise Figure
dB 2.4 1.8 1.8 1.7 2.1
Typical parameters reflect performance in an application circuit.
Absolute Maximum Rating
Ordering Information
Parameter
Operating Case Temperature
Storage Temperature
DC Voltage
RF Input Power (continuous)
Junction Temperature
Rating
-40 to +85 °C
-55 to +125 °C
+6 V
4 dB above Input P1dB
+220° C
Operation of this device above any of these parameters may cause permanent damage.
Part No.
AH31
AH31-PCB75
AH31-PCB170
AH31-PCB240
AH31-PCB500
Description
High Dynamic Range IF Amplifier
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
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577- 6621 • e-mail: sales@wj.com • Web site: www.wj.com
February 2004