AH314
Product Features
•
2.3 – 2.9 GHz
•
23 dB Gain
•
EVM <2.5 %@ 24 dBm Pout
•
Internal Active Bias
•
+5V Single Supply Voltage
•
+33 dBm P1dB
•
Lead-free/RoHS-compliant
5x5 mm QFN SMT package
2.3-2.9 GHz WiMAX 2W Driver Amplifier
Product Description
The AH314 is a high dynamic range broadband driver
amplifier in a surface mount package. The two-stage
amplifier has 23 dB of gain, while achieving +24 dBm of
linear output power for 2.3–2.9 GHz WiMAX/WiBro
applications.
AH314 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
AH314 to operate directly off a commonly available +5V
supply. The RoHS-compliant/Lead-free 5x5mm QFN
package is surface mountable to allow for low
manufacturing costs to the end user.
The AH314 is targeted for use in a configuration for the
driver stage amplifier in 802.16 WiMAX or WiBro
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
GND / NC
Applications
•
802.16 WiMAX infrastructure
•
WiBro infrastructure
Specifications
(1)
Parameter
Operational Bandwidth
Output Channel Power
Power Gain
EVM
(2)
Efficiency
Output P1dB
Noise Figure
PIN_VPD Current, Ipd
Quiescent Current, Icq
(3)
Icc @ 24dBm
Device Voltage, Vcc
Typical Performance
(4)
Units Min
GHz
dBm
dB
%
%
dBm
dB
mA
mA
mA
V
2.3
+24
23
2.0
6.6
+33
6.4
36
600
700
+5
Typ
Max
2.9
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
2.6
+25
23.1
-8.2
-16.7
33
1.8
8.2
6.4
600
+5
Vcc=6V
2.6
+26.5
23.1
-8.6
-26
34.5
2.2
8.5
6.4
650
+6
2.5
1. Test conditions unless otherwise noted: 25ºC, +5V Vsupply, in 2.5-2.7GHz 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=68Ω off pin 1 and R2=150Ω off pin 16.
4.
This corresponds to the quiescent current or operating current under small signal conditions into
pins 1, 2, 15 and 17. Pin 1 and 16 is used a reference voltage for the internal biasing circuitry. It is
expected that PIN_VPD1 and PIN_VPD2 will pull 36 mA of current when used with series
resistors (i.e. Total device current typically will be 636 mA).
4. Typical parameters reflect performance in a tuned application circuit at +25° C.
Absolute Maximum Rating
Parameter
Storage Temperature
Collector Current, Icc ( Icc1+Icc2)
RF Input Power into a 50Ω Load
Device Voltage
Device Power
Thermal Resistance, Rth
Junction Temperature
Rating
-55 to +125 ºC
1.6 A
19 dBm
+8 V
8W
14.4
°C
/ W
150
°C
Ordering Information
Part No.
AH314-G
AH314-PCB
Description
2.3-2.9 GHz WiMAX 2W Driver Amplifier
2.4-2.7 GHz Evaluation Board
Operation of this device above any of these parameters may cause permanent damage.
Standard T/R size = 500 pieces on a 7” reel.
Specifications and information are subject to change without notice.
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 1 of 6 September 2008
GND / NC
AH314
Gain
30
2.3-2.9 GHz WiMAX 2W Driver Amplifier
S-Parameters (V
CC
= +5 V, I
CC
= 600 mA, T = 25
°C,
calibrated to device leads)
S11
1.0
0.
6
0
Typical Device Data
0.8
S22
0.
6
2.
3.
0
Gain (dB)
10.0
10.0
10
- 5.
0
- 5.
0
10.0
15
0.2
0.4
0.6
0.8
1.0
2.0
3.0
4.0
5.0
0
0.2
0.4
0.6
0.8
1.0
2.0
3.0
4.0
5.0
0
5
0
0
1
2
3
4
5
- 0.
2
- 0.
2
.
-0
4
.
-0
4
.0
-2
.6
-0
-0.8
S(1,1)
Swp Min
0GHz
-0.8
-1.0
S(2,2)
Notes:
The gain for the unmatched device in 50ohm system is shown as the trace in blue color. The impedance plots are shown from 0 – 4000 MHz, with markers
placed at 0-4GHz in 0.5GHz increments.
S-Parameters (V
CC
= +5 V, I
CC
= 600 mA, T = 25
°C,
unmatched 50 ohm system, calibrated to device leads)
Freq ( MHz ) S11(dB)
S11(ang)
S21(dB)
S21(ang)
S12(dB)
S12(ang)
S22(dB)
2200
-6.45
-120.54
23.31
-145.39
-48.04
60.39
-2.33
2250
-6.78
-130.36
23.13
-158.46
-47.97
52.65
-2.65
2300
-7.13
-138.36
22.99
-170.95
-48.01
45.37
-2.98
2350
-7.45
-144.94
22.95
177.21
-48.10
38.67
-3.31
2400
-7.81
-150.37
22.95
165.61
-48.27
31.91
-3.65
2450
-8.23
-154.71
23.00
154.08
-48.56
24.85
-4.01
2500
-8.68
-158.06
23.09
142.57
-48.96
17.33
-4.39
2550
-9.18
-160.55
23.28
131.04
-49.41
8.81
-4.78
2600
-9.69
-161.94
23.51
119.35
-49.99
-0.931
-5.19
2650
-10.16
-162.13
23.78
107.23
-50.72
-12.17
-5.65
2700
-10.53
-161.30
24.11
94.68
-51.59
-26.06
-6.17
2750
-10.73
-159.84
24.53
81.54
-52.51
-43.81
-6.8
2800
-10.68
-158.59
25.03
67.41
-53.25
-67.29
-7.77
2850
-10.36
-158.56
25.69
52.45
-53.15
-96.50
-9.09
2900
-9.90
-161.62
26.43
35.26
-51.90
-128.68
-11.10
2950
-9.64
-169.83
27.14
14.38
-49.90
-160.49
-12.82
3000
-10.22
175.73
27.49
-10.77
-48.05
168.76
-9.754
Device S-parameters are available for download from the website at: http://www.wj.com
S22(ang)
157.17
156.54
156.14
155.90
155.85
155.98
156.31
156.65
157.1
157.78
158.54
159.55
161.17
164.03
172.59
-160.65
-129.23
Application Circuit PC Board Layout
PCB Material: 0.0147” Rogers Ultralam 2000, single layer, 1 oz Cu,
ε
r
= 2.45 Microstrip line details: width = .042”, spacing = .050”. The silkscreen
markers ‘A’, ‘B’, ‘C’, etc. and ‘1’, ‘2’, ‘3’, etc. are used as place markers for the input and output tuning.
Specifications and information are subject to change without notice.
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 2 of 6 September 2008
-1.0
Frequency (GHz)
-0
.6
-2
.0
Swp Min
0GHz
-10.0
-4
.0
-3
.
0
0.2
-10.0
-4
.0
-3
.
0
0.2
20
4.
0
5.0
0.
4
0.
4
25
2.
0
DB(|S(2,1)|)
Swp Max
4GHz
1.0
Swp Max
4GHz
0.8
3.
0
4.
0
5.0
10.0
AH314
2.3-2.9 GHz WiMAX 2W Driver Amplifier
Application Circuit Schematic (AH314-PCB) for 2.5-2.7 GHz.
(The
Amplifier can be tuned across any 200MHz band over the 2.3-2.9 GHz BW.)
Specifications and information are subject to change without notice.
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 3 of 6 September 2008
AH314
Gain
25
Gain
24
2.3-2.9 GHz WiMAX 2W Driver Amplifier
Typical Performance Plots for AH314-PCB, Vpd, Vbias, Vcc = 5V, +25°C
Return Loss
0
S11
-5
S22
5
EVM vs Pout vs Temperature
(Freq = 2.6GHz, Vcc=5V)
+25C
4
-40C
+85C
S11 & S22 (dB)
Gain(dB)
23
22
21
20
2.4
2.5
2.6
2.7
2.8
2.9
-10
-15
-20
-25
2.4
2.5
2.6
2.7
2.8
2.9
EVM (%)
3
2
1
0
14
16
18
20
OFDM, QAM-64,54Mb/S
22
24
26
Frequency (GHz)
Frequency (GHz)
Gain vs Pout vs Temperature
(Freq = 2.6GHz, Vcc=5V)
25
25
2.5GHz
24
24
Pout (dBm)
Gain vs Pout vs Frequency
( +25°C, Vcc=5V )
2.6GHz
2.7GHz
EVM vs Pout vs Frequency
(+25°C, Vcc=5V)
5
2.5GHz
4
2.6GHz
2.7GHz
EVM (%)
Gain (dB)
Gain (dB)
+25C
-40C
+85C
OFDM, QAM-64,54Mb/S
20
22
24
26
28
30
32
34
3
2
1
OFDM, QAM-64,54Mb/S
0
14
16
18
20
22
24
26
23
22
21
20
23
22
21
OFDM, QAM-64,54Mb/S
20
20
22
24
26
28
30
Pout (dBm)
Pout (dBm)
Pout (dBm)
Current vs Pout vs Temperature
( Freq = 2.6GHz, Vcc=5V )
1000
+25C
900
-40C
+85C
Current vs Pout vs Frequency
( +25°C, Vcc=5V )
IM3 vs. Pout
(2.5GHz, 1MHz tone spacing, +25° C)
-20
1000
2.5GHz
2.6GHz
2.7GHz
900
-30
Current (mA)
Current (mA)
800
700
600
500
20
22
24
OFDM, QAM-64,54Mb/S
26
28
30
800
700
600
OFDM, QAM-64,54Mb/S
IM3 (dBc)
20
22
24
26
28
30
-40
-50
-60
500
-70
14
16
18
20
22
24
26
Pout (dBm)
Pout (dBm)
Output Power / Tone (dBm)
Typical Performance Plots for AH314-PCB, Vpd, Vbias = 5V, Vcc = 6V, +25°C
EVM vs Pout vs Frequency
(+25°C, Vcc=6V)
5
Gain
25
1000
Current vs Pout vs Frequency
( +25°C, Vcc=6V )
2.5GHz
4
2.6GHz
2.7GHz
Gain
24
23
22
21
900
2.5GHz
2.6GHz
2.7GHz
Current (mA)
EVM (%)
Gain(dB)
3
2
1
0
17
19
21
800
700
600
OFDM, QAM-64,54Mb/S
23
25
27
OFDM, QAM-64,54Mb/S
20
2.4
500
2.5
2.6
2.7
2.8
2.9
17
19
21
23
25
27
Pout (dBm)
Frequency (GHz)
Pout (dBm)
Specifications and information are subject to change without notice.
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 4 of 6 September 2008
AH314
2.3-2.9 GHz WiMAX 2W Driver Amplifier
2.3 – 2.7 GHz Application Note: Changing Icq Biasing Configurations at +5V
The AH314 can be configured to operate with lower bias current by varying the bias-adjust resistors R1 & R2. R1 sets the
quiescent current in the output stage, while R2 sets the quiescent current in the input stage. The recommended circuit
configurations shown previously in this datasheet have the device operating with a 600 mA as the quiescent current (I
CQ
). This
biasing level represents a tradeoff in terms of EVM and efficiency. Lowering I
CQ
will improve upon the efficiency of the
device, but degrade the EVM performance. Raising I
CQ
will improve the EVM performance, but degrade the efficiency of the
device. Measured data shown in the plots below represents the AH314 measured and configured for 2.6 GHz applications. It is
expected that variation of the bias current for other frequency applications will produce similar performance results.
EVM vs Pout vs Icq
7
F = 2.6GHz, 802.16-2004 OFDMA, 64QAM-1/2, 1024 FFT, 20 symbols,
30 channels
6
600 mA
400 mA
500 mA
300 mA
5
EVM (%)
Table 1 : Reduced Current Operation
4
Icq
(mA)
600
500
400
300
R1
(Ω)
68
86
110
160
R2
(Ω)
150
180
300
330
V
PD,
V
bias,
V
cc
(V)
5
5
5
5
3
2
1
0
20
21
22
23
24
25
26
27
Pout (dBm)
2.3 – 2.7 GHz Application Note: Changing Icq Biasing Configurations at +3.3V
EVM vs Pout vs Icq
7
F = 2.6GHz, 802.16-2004 OFDMA, 64QAM-1/2, 1024 FFT, 20
symbols, 30 channels
6
5
Table 2 : Reduced Current Operation
Icq
R1
R2
V
PD,
V
bias,
V
cc
(mA)
(Ω)
(Ω)
(V)
3
500
3.3
3
15
400
3.3
11
24
350
3.3
17
250
43
45
3.3
EVM (%)
4
3
2
1
500 mA
350 mA
400 mA
250 mA
0
20
21
22
23
Pout (dBm)
24
25
Specifications and information are subject to change without notice.
TriQuint Semiconductor, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: info-sales@tqs.com
•
Web site: www.TriQuint.com
Page 5 of 6 September 2008
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