EE Product News

Hyperabrupt Junction Varactor Diodes Eye Low Noise VCO Apps

Boasting of a high capacitance ratio (CTR ) and low series resistance (RS), the SMV1763-079 and SMV1770-079 silicon hyperabrupt junction varactor diodes are said to be particularly well-suited for use in low phase noise voltage-controlled oscillators (VCOs) employed in wireless systems operating at frequencies up to and beyond 2.5 GHz. Specifically, the tuning varactors are targeted at high-volume, low-cost battery-powered applications, such as in low-noise and wideband UHF and VHF VCOs for GSM, PCS, CDMA and analog phones.
Besides a high CTR and low RS, the SMV1763-079 and SMV1770-079 tuning varactors also offer a forward current of 20 mA (max.), power dissipation of 250 mW (max.), and an operating temperature range of -55°C to 125°C. Breakdown voltage for the devices at IR = 10 µA is 10V and 12V (min.), respectively. The hyperabrupt junction varactor diodes come in the ultra-small SC-79 package and cost $0.21 each/100K.

Company: ALPHA INDUSTRIES - Sales Department

Product URL: Click here for more information

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