General Description
The MAX2620 combines a low-noise oscillator with two output buffers in a low-cost, plastic surface-mount, ultra-small µMAX package. This device integrates functions typically achieved with discrete components. The oscillator exhibits low-phase noise when properly mated with an external varactor-tuned resonant tank circuit. Two buffered outputs are provided for driving mixers or prescalers. The buffers provide load isolation to the oscillator and prevent frequency pulling due to load-impedance changes. Power consumption is typically just 27mW in operating mode (VCC = 3.0V), and drops to less than 0.3µW in standby mode. The MAX2620 operates from a single +2.7V to +5.25V supply.

FEATUREs
♦ Low-Phase-Noise Oscillator: -110dBc/Hz (25kHz offset from carrier) Attainable
♦ Operates from Single +2.7V to +5.25V Supply
♦ Low-Cost Silicon Bipolar Design
♦ Two Output Buffers Provide Load Isolation
♦ Insensitive to Supply Variations
♦ Low, 27mW Power Consumption (VCC = 3.0V)
♦ Low-Current Shutdown Mode: 0.1µA (typ)

APPLICATIONs
  Analog Cellular Phones
  Digital Cellular Phones
  900MHz Cordless Phones
  900MHz ISM-Band Applications
  Land Mobile Radio
  Narrowband PCS (NPCS)