+5V Active-Bias InGaP HBT Gain Block
• 50 – 4000 MHz
• 15 dB Gain
• +36 dBm OIP3
• +5V Single Voltage Supply
• Internal Active Bias Supply
• Internally matched to 50 Ω
• Lead-free / RoHS-compliant /
Green SOT-89 package
• GSM, PCS, CDMA, WCDMA
• WiMAX, WiBro
• Repeaters, BTS Transceivers
The WJA1035 is a cascadable gain block that offers high
linearity in a low-cost surface-mount package. At 1.9 GHz,
the WJA1035 typically provides 15 dB gain, +36 dBm
OIP3, and +16 dBm P1dB. The device is housed in a lead-
free/green/RoHS-compliant SOT-89 industry-standard
SMT package using a NiPdAu plating to eliminate the
possibility of tin whiskering.
The WJA1035 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 a +5V supply voltage.
The broadband amplifier can be directly applied to various
current and next generation wireless technologies such as
GSM, CDMA, W-CDMA, WiBro, and WiMAX. The
WJA1035 is ideal for general purpose applications such as
LO buffering, IF amplification and pre-driver stages within
the 50 to 4000 MHz frequency range.
Input Return Loss
Output Return Loss
Output IP3 (2)
1. Test conditions: 25 ºC, Supply Voltage = +5.00 V, 50 Ω System.
2. 3OIP measured with two tones at an output power of 0 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. S-parameters and 3OIP measured at device pins. All other specifications measured on evaluation
Output IP3 (2)
1. Listed typical performance parameters measured on evaluation board.
Absolute Maximum Rating
Operating Case Temperature
-40 to +85 °C
-55 to +150 °C
+5V Active Bias InGaP HBT Gain Block
(lead-free/green/RoHS-compliant SOT-89 Package)
50 – 4000 MHz Fully Assembled Eval. Board
Operation of this device above any of these parameters may cause permanent damage.
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: firstname.lastname@example.org • Web site: www.wj.com
Page 1 of 4 Aug 2007