Specifications and information are subject to change without notice
TriQuint Semiconductor, Inc • Phone 503-615-9000 • FAX: 503-615-8900 • e-mail: info-sales@tqs.com • Web site: www.TriQuint.com Page 1 of 4 June 2011
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
GND
1
2
3
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
Storage Temperature -55 to +150
C
Supply Voltage +6.5 V
Input Power +24 dBm
θ
(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)
Standard tape / reel size = 1000 pieces on a 7″ reel
Not Recommended For New
Designs
Recommended replacement parts:
TQP3M9008