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 4 July 2008
WJA1505
+5V Active-Bias InGaP HBT Gain Block
Product Features
• Cascadable gain block
• 50 – 1000 MHz
• 19 dB Gain
• +19 dBm P1dB
• +37 dBm OIP3
• +51dBm OIP2
• Operates from +5V @ 65mA
• Robust 1000V ESD, Class 1C
• RoHS-compliant SOT-89 package
Applications
• IF Amplifier
• VHF/UHF Transmission
• Wireless Infrastructure
• General Purpose
• CATV / FTTH
Product Description
The WJA1505 is a cascadable gain block that offers high
linearity in a low-cost surface-mount package. At 200
MHz, the WJA1505 typically provides 19 dB gain, +37
dBm OIP3, and +19 dBm P1dB. The device is housed in a
RoHS-compliant SOT-89 industry-standard SMT package
using a NiPdAu plating to eliminate the possibility of tin
whiskering.
The WJA1505 consists of Darlington pair amplifiers using
a high reliability InGaP/GaAs HBT process technology.
The MMIC amplifier is internally matched to 50Ω and only
requires DC-blocking capacitors and a bias inductor for
operation. An internal active bias is designed to enable
stable performance over temperature. A dropping bias
resistor is not required allowing the device to be biased
directly from +5V supply voltage.
The amplifier is targeted for high performance IF applications
in existing and next generation wireless technologies. The
WJA1505 is ideal for general purpose applications such as LO
buffering, IF amplification and pre-driver stages within the 50
to 1000 MHz frequency range.
Functional Diagram
RF IN GND RF OUT
GND
1 23
4
Function Pin No.
Input 1
Output/Bias 3
Ground 2, 4
Specifications (1)
Parameter Units Min Typ Max
Operational Bandwidth MHz 50 1000
Test Frequency MHz 200
Gain dB 17.7 19.3 20.7
Input Return Loss dB 19
Output Return Loss dB 20
Output P1dB dBm +19.3
Output IP3 (2) dBm +33 +36.6
Output IP2 dBm +51.0
Noise Figure dB 4.7
Device Voltage V 5
Device Current mA 55 65 75
1. Test conditions: 25 ºC, Supply Voltage = +5 V, 50 Ω System. S-parameters and 3OIP measured at
device pins. All other specifications measured on evaluation board.
2. 3OIP measured with two tones at an output power of +6 dBm/tone separated by 1 MHz. The
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.
Absolute Maximum Rating
Parameter Rating
Storage Temperature -55 to +150 °C
Supply Voltage +6.5 V
Input Power +24 dBm
θjc (junction to paddle) 83.8 °C / W
Maximum Junction Temperature 150 °C
Operation of this device above any of these parameters may cause permanent damage.
Typical Performance (3)
Parameter Units Typical
Frequency MHz 70 170 240 500 900
S21 dB 19.4 19.2 19.0 18.5 17.3
S11 dB -15 -18 -19 -18 -14
S22 dB -22 -22 -20 -15 -10
Output P1dB dBm +19.1 +19.2 +19.2 +18.9 +17.7
Output IP3 (2) dBm +35.8 +36.7 +36.9 +37.7 +33.6
Output IP2 dBm +50.7 +51.4 +51.0 +54.1 +52.9
Noise Figure dB 4.6 4.7 4.7 4.9 5.5
3. Listed typical performance parameters measured on evaluation board
Ordering Information
Part No. Description
WJA1505 +5V Active Bias InGaP HBT Gain Block
(lead-free/green/RoHS-compliant SOT-89 Package)
WJA1505-PCB 50 – 1000 MHz Fully Assembled Eval. Board
Standard Tape / Reel 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 2 of 4 July 2008
WJA1505
+5V Active-Bias InGaP HBT Gain Block
Typical Evaluation Board RF Performance Plots
Supply Bias = +5V, Icc = 65 mA
1. Test conditions: T = 25 ºC, Supply Voltage = +5 V, Icc = 65 mA typical, 50 Ω System.
2. 3OIP measured with two tones at an output power of 6 dBm/tone separated by 1 MHz. The suppression on the largest IM3 product is used to calculate the OIP3 using a 2:1 rule.
Gain vs. Frequenc
y
10
12
14
16
18
20
0 500 1000 1500 2000
Frequency (MHz)
Gain
(
dB
)
-40C +25C +85C
Return Loss
T=25°C
-30
-25
-20
-15
-10
-5
0
0 200 400 600 800 1000
Frequency (M Hz)
S11, S22
(
dB
)
S11 S22
Noise Figure vs. Frequency
2
3
4
5
6
7
8
9
10
0 200 400 600 800 1000
Frequency (M Hz)
NF
(
dB
)
-40C +25C +85C
Ga in vs . Po u t
Freq=200 MHz
10
12
14
16
18
20
10 12 14 16 18 20
Pout (dBm )
Gain
(
dB
)
O IP 3 vs. Frequency
Pout = 6 dBm /tone
25
30
35
40
45
0 200 400 600 800 1000
Frequency (MHz)
OIP3
(
dBm
)
-40C +25C +85C
O IP3 vs Vcc
25
30
35
40
45
50
4.5 4.6 4.7 4.8 4.9 5 5.1 5.2
Vcc (V)
OIP3
(
dBm
)
OIP2 vs. Frequency
Pout = 2 dBm /tone
35
40
45
50
55
60
65
0 200 400 600 800 1000
Frequency (M Hz)
OIP2
(
dBm
)
P1dB vs. Frequency
10
12
14
16
18
20
0 200 400 600 800 1000
Frequency (MH z)
P1dB
(
dBm
)
-40C +25C +85C
P1d B vs Vcc
10
12
14
16
18
20
4.5 4.6 4.7 4.8 4.9 5 5.1 5.2
Vcc (V)
P1dB
(
dBm
)
Icc vs. Tem perature
Vcc = +5V
55
60
65
70
75
-50 -25 0 25 50 75 100
Tem p erature (°C)
Icc
(
mA
)
Icc vs. Vcc
20
40
60
80
100
120
4.0 4.5 5.0 5.5 6.0
Vcc (V)
Icc
(
mA
)
-40C +25C +85C
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 3 of 4 July 2008
WJA1505
+5V Active-Bias InGaP HBT Gain Block
Application Circuit
Recommended Component Values (1)
Ref. Name Value / Type Size
L1 470 nH ferrite core wire wound inductor (2) 0805
C1, C2 1000 pF NPO chip capacitor 0603
C3 0.018 μF chip capacitor 0603
R1, R2, R4 0 Ω(3) 0603
C4, C5, C6,
R3, R5, R6,
R7, R8
Do Not Place (3)
1. The listed values are contained on the evaluation board to achieve optimal broadband performance
2. For lower cost and performance (100 – 1000 MHz) option use 470 nH air core wire wound inductor.
3. Place holders for the 0Ω resistors and “Do Not Place” references are not needed for final design.
Typical Device Data
S-Parameters (Vdevice = +5V, ICC = 65 mA, T = 25 °C, calibrated to device leads)
Freq (MHz) S11 (dB) S11 (ang) S21 (dB) S21 (ang) S12 (dB) S12 (ang) S22 (dB ) S22 (ang)
10 -12.67 -58.61 21.75 167.36 -24.85 17.99 -8.64 -37.42
50 -18.42 -130.48 19.70 169.11 -22.91 3.86 -17.79 -54.38
100 -19.18 -148.50 19.51 168.07 -22.83 0.52 -19.90 -52.53
150 -19.47 -152.58 19.44 164.59 -22.82 -1.55 -19.93 -55.18
200 -19.15 -153.65 19.33 160.75 -22.78 -3.28 -19.73 -61.49
250 -19.00 -152.93 19.29 157.20 -22.76 -4.67 -19.03 -65.79
300 -18.57 -151.79 19.24 153.26 -22.81 -6.19 -18.33 -70.81
350 -18.14 -149.00 19.22 148.84 -22.83 -7.01 -17.58 -74.98
400 -17.86 -147.88 19.15 144.57 -22.81 -8.91 -17.03 -78.76
450 -17.23 -144.33 19.08 140.96 -22.81 -9.47 -16.18 -83.41
500 -16.91 -144.72 19.00 136.61 -22.72 -11.09 -15.86 -86.26
550 -16.57 -143.95 18.91 132.60 -22.84 -12.81 -15.28 -90.85
600 -16.12 -142.62 18.80 128.59 -22.87 -14.21 -14.83 -93.72
650 -15.74 -140.46 18.73 124.73 -22.83 -15.17 -14.31 -96.80
700 -15.35 -139.57 18.59 120.30 -22.88 -16.10 -13.66 -100.65
750 -15.02 -138.44 18.50 117.30 -22.83 -18.04 -13.25 -103.10
800 -14.78 -138.82 18.37 112.84 -22.81 -19.26 -12.88 -106.20
850 -14.49 -137.73 18.29 108.55 -22.88 -20.49 -12.32 -109.14
900 -14.27 -136.56 18.12 105.01 -22.87 -21.55 -11.80 -112.10
950 -13.99 -135.73 18.07 101.23 -22.85 -23.17 -11.34 -114.90
1000 -13.92 -135.99 17.93 97.14 -22.96 -24.51 -10.99 -117.96
1050 -13.67 -135.66 17.75 93.36 -22.90 -25.55 -10.55 -120.27
1100 -13.31 -135.44 17.58 89.63 -22.87 -27.17 -10.16 -123.01
1150 -13.11 -134.80 17.50 85.77 -22.91 -28.65 -9.76 -125.23
1200 -12.91 -134.82 17.33 81.40 -23.05 -29.42 -9.48 -127.90
Device S-parameters are available for download from the website at: http://www.wj.com
C1
Blocking
Capacitor
RF OUT
L1
RF Choke
C3
Bypass
Capacitor
R4
0 Ω
RF IN
C2
Blocking
Ca
p
acito
r
Vcc=+5.00V
Icc = 65 mA
WJA1505
R1
0 Ω R2
0 Ω
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 4 of 4 July 2008
WJA1505
+5V Active-Bias InGaP HBT Gain Block
Mechanical Information
This package is lead-free/Green/RoHS-compliant. It is compatible with both lead-free (maximum 260 °C reflow temperature) and leaded
(maximum 245 °C reflow temperature) soldering processes. The plating material on the leads is NiPdAu.
Outline Drawing
Land Pattern
Product Marking
The WJA1505 will be marked with an “A1505”
designator with an alphanumeric lot code
marked below the part designator.
Tape and reel specifications for this part are
located on the website in the “Application
Notes” section.
MSL / ESD Rating
ESD Rating: Class 1C
Value: Passes ≥ 1000V min.
Test: Human Body Model (HBM)
Standard: JEDEC Standard JESD22-A114
ESD Rating: Class IV
Value: Passes ≥ 1000V min.
Test: Charged Device Model (CDM)
Standard: JEDEC Standard JESD22-C101
MSL Rating: Level 3 at +260 °C convection reflow
Standard: JEDEC Standard J-STD-020
Mounting Config. Notes
1. Ground / thermal vias are critical for the proper
performance of this device. Vias should use a .35mm
(#80 / .0135”) diameter drill and have a final plated thru
diameter of .25 mm (.010”).
2. Add as much copper as possible to inner and outer layers
near the part to ensure optimal thermal performance.
3. Mounting screws can be added near the part to fasten the
board to a heatsink. Ensure that the ground / thermal via
region contacts the heatsink.
4. Do not put solder mask on the backside of the PC board in
the region where the board contacts the heatsink.
5. RF trace width depends upon the PC board material and
construction.
6. Use 1 oz. Copper minimum.
7. All dimensions are in millimeters (inches). Angles are in
degrees.
A1505
XXXX
-
X
