Expanding its portfolio of high-performance variable gain amplifiers (VGAs), WJ Communications, Inc. has released the VG112. The VG112 is a 1-W, very low distortion VGA optimized for various current and next-generation wireless technologies such as GPRS, GSM, CDMA, TD-SCDMA and W-CDMA, for which high linearity and high power are required.

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Offering high dynamic range, 1 W VGA is housed in a low-cost SMT lead-free/green/RoHS-compliant, 6 mm x 6 mm QFN package. It operates over the 1800 to 2200 MHz frequency range. It also features 23 dB gain, +46 dBm OIP3, and +30 dBm of compressed 1 dB power using a single +5 V supply voltage. The internal attenuation stage provides 28 dB of gain variation range and is controlled by a 0 V to 4.5 V control voltage.

The high linearity performance of the VG112 provides exceptional adjacent channel power/leakage (ACPR/ACLR) performance for spread-spectrum applications such as CDMA and W-CDMA. It is capable of providing +23.5 dBm power output for an IS-95A signal at -45 dBc ACPR when operating at 1960 MHz. For W-CDMA the power output is +21 dBm with -45 dBc ACLR when operating at 2140 MHz. A key feature of the device is in its ability to maintain high linearity at any gain state over its entire attenuation range.

The VG112 is manufactured using the manufacturer’s InGaP HBT process designed specifically for wireless infrastructure requirements. Capable of operating over the -40°C to +85°C temperature range, the VG112 achieves in excess of 1 M hours MTTF at +85°C. It is also has an ESD rating of Class 1B (HBM per JEDEC Standard JESD22-A114) and a Level 2 MSL rating at +260°C per JEDEC Standard J-STD-020.

For pricing, contact WJ Communications sales. Production units are available immediately. Samples can be requested directly from the WJ website www.wj.com.