AH315
3.3-3.8 GHz WiMAX 2W Driver Amplifier
Product Features
•
3.3 – 3.8 GHz
•
25 dB Gain
•
EVM <2.5 %@ 25 dBm Pout
•
Internal Active Bias
•
+5V Single Supply Voltage
•
+33 dBm P1dB
•
RoHS-compliant/Lead-free
5x5 mm QFN SMT package
Product Description
The AH315 is a high dynamic range broadband driver
amplifier in a surface mount package. The two-stage
amplifier has 25 dB of gain, while being able to achieve high
performance for 3.3–3.8 GHz WiMAX/WiBro applications
delivering +25 dBm of linear output power.
AH315 uses a high reliability +5V InGaP/GaAs HBT
process technology. The device incorporates proprietary
bias circuitry to compensate for variations in linearity and
current draw over temperature. The device does not require
any negative bias voltage; an internal active bias allows the
AH315 to operate directly off a commonly used single +5V
supply. The RoHS-compliant/Lead-free/Green 5x5mm QFN
package is surface mountable to allow for low
manufacturing costs to the end user.
The AH315 is targeted for use in a configuration for the
stage amplifier in 802.16 WiMAX basestations where high
linearity and medium power is required.
Functional Diagram
GND / NC
GND / NC
VBias2
Vcc1
Vpd2
Vpd1
VBias1
GND / NC
RF IN
RF IN
Vcc2
GND / NC
RF OUT
RF OUT
RF OUT
GND / NC
GND / NC
GND / NC
Applications
•
802.16 WiMAX infrastructure
Specifications
(1)
Parameter
Operational Bandwidth
Output Channel Power
Power Gain
EVM
(2)
Efficiency
Output P1dB
Noise Figure
Quiescent Current, Icq
(3)
Icc @26dBm
Device Voltage, Vcc
Typical Performance
(4)
Units Min
GHz
dBm
dB
%
%
dBm
dB
mA
mA
V
3.3
+25
25
2.3
8
+33
7.3
600
700
+5
Typ
Max
3.8
Parameter
Frequency
Output Channel Power
Power Gain
S11 – Input R.L.
S22 – Output R.L.
Output P1dB
EVM
Efficiency
Noise Figure
Quiescent Current
Vpd, Vbias
Units
GHz
dBm
dB
dB
dB
dBm
%
%
dB
mA
V
Vcc=5V
3.5
+25
25.4
-15.2
-11.3
33
2.2
8
7.3
600
+5
GND / NC
GND / NC
Vcc=6V
3.5
+26
24.5
-15.7
-11.7
33
1.6
9.4
7.3
650
+5
2.5
1. Test conditions unless otherwise noted: 25ºC, +5V Vsupply, in 3.4-3.6 GHz tuned application circuit
shown in page 3.
2. Using an 802.16-2004 OFDMA, 64QAM-1/2,1024-FFT, 20 symbols, 30 subchannels.
3. This corresponds to the quiescent current or operating current under small-signal conditions with
bias resistor R1=70Ω off pin 1 and R2=150Ω off pin 16.
4. Typical parameters reflect performance in a tuned application circuit at +25° C.
Absolute Maximum Rating
Parameter
Storage Temperature
Thermal Resistance, Rth
Junction Temperature, Tj
Collector Current, Icc ( Icc1+Icc2)
RF Input Power into a 50Ω Load
Device Voltage
Device Power
Rating
-55 to +125 ºC
13
°C
/ W
150
°C
1.6 A
19 dBm
+8 V
8W
Ordering Information
Part No.
AH315
AH315 –PCB
Description
3.3-3.8 GHz WiMAX 2W Driver Amplifier
3.4-3.6 GHz Evaluation Board
Specifications and information are subject to change without notice.
Operation of this device above any of these parameters may cause permanent damage.
Standard T/R size = 500 pieces on a 7” reel.
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 5 December 2007
WJCI [ WJ COMMUNICATION. INC. ]
