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WJA1021

WJ Communication
Part Number WJA1021
Manufacturer WJ Communication
Description 5V Active-Bias InGaP HBT Gain Block
Published May 26, 2009
Detailed Description WJA1021 +5V Active-Bias InGaP HBT Gain Block Product Features • 50 – 4000 MHz • 17.5 dB Gain @ 1.9GHz • +19 dBm P1dB @ ...
Datasheet PDF File WJA1021 PDF File

WJA1021
WJA1021

Overview
WJA1021 +5V Active-Bias InGaP HBT Gain Block Product Features • 50 – 4000 MHz • 17.
5 dB Gain @ 1.
9GHz • +19 dBm P1dB @ 1.
9GHz www.
datasheet4u.
com • +37.
5 dBm OIP3 @ 1.
9GHz • +5V Single Supply • Low current draw (90mA) • Unconditionally stable • Internally matched to 50 Ω • Robust 1000V ESD, Class 1C • Lead-free/green/RoHS-compliant SOT-89 package Product Description The WJA1021 is a cascadable gain block that offers high linearity in a low-cost surface-mount package.
At 1.
9 GHz, the WJA1021 typically provides 17.
5 dB gain, +37.
5 dBm OIP3, and +19 dBm P1dB.
The device is housed in a leadfree/green/RoHS-compliant industry-standard SOT-89 SMT package using a NiPdAu plating to eliminate the possibility of tin whiskering.
Functional Diagram GND 4 1 2 GND 3 RF OUT Applications • • • • GSM, PCS, CDMA, WCDMA WiMAX, WiBro Repeaters, BTS Transceivers RFID The WJA1021 consists of Darlington pair amplifier using a high reliability InGaP/GaAs HBT process technology.
The amplifier has been optimized internally to offer very high linearity performance at 1.
9 GHz while drawing very low current.
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 and allow for operation 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 WJA1021 is ideal for general purpose applications such as LO buffering or amplification and pre-driver stages within the 50 to 4000 MHz frequency range.
RF IN Function Input Output/Bias Ground Pin No.
1 3 2, 4 Specifications (1) Parameter Operational Bandwidth Test Frequency Gain Input Return Loss Output Return Loss Output P1dB Output IP3 (2) Noise Figure Device Voltage Device Current Typical Performance (3) Units MHz MHz dB dB dB dBm dBm dB V mA Min 50 Typ 190...


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