VHF varicaps

Varicap diodes (or varactor or tuning diodes) are principally used as voltage variable capacitors, with their diode function a secondary option. These small devices play an important role in a host of RF applications from tuning, frequency multiplier and modulation, to couple elements in filters with controlled bandwidth, parametric amplification and switching in the VHF and microwave regions.

A key product focus for NXP, our portfolio is very diverse and covers multitude of applications. For example, among the latest developments in low voltage varicap diodes is the BB202LX in the Ultra Thin Leadless Package (UTLP) SOD882T, which is ideal for electronic FM radio tuning and Voltage Controlled Oscillators (VCO) in mobile phones.

Features

• Excellent linearity
• Excellent matching
• Very low series resistance
• Tight capacitance specifications
• High capacitance ratio

Benefits

• Very small and leadless SMD packages
• Complete portfolio covering a wide range of applications

Applications

• Electronic TV tuning
  • Satellite and terrestrial Television tuners
  • DVD recorders
• FM radio tuning
  • Car radio
  • Mobile phones
• Voltage Controlled Oscillators (VCO)
• Voltage Controlled Crystal Oscillators / Temperature Controlled Crystal Oscillators (VCXO/TCXO)
• CDMA Cellular VCO with the BFG425W, BFG410W and Varactor BB142

Information resources

• RF Manual
• Models
• MMS selection guide
• Ultra-thin leadless package (UTLP) platform for faster time-to-market, smaller form factor

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