MAX2620:10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs

The MAX2620 combines a low-noise oscillator with two output buffers in a low-cost, plastic surface-mount, ultra-small ?MAX? 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 0.3?W in standby mode. The MAX2620 operates from a single +2.7V to +5.25V supply.

Key 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: 0.1?A (typ)
MAX2620: Typical Operating Circuit
MAX2620: Typical Operating Circuit
  • 900MHz Cordless Phones
  • 900MHz ISM-Band Applications
  • Analog Cellular Phones
  • Digital Cellular Phones
  • Land Mobile Radios
  • Narrow-Band PCS (NPCS)
titleDownload file
MAX2620?Data SheetMAX2620.pdf
Part NumberLO Driver OutputsPLL Driver OutputsRF Freq.
RF Freq.
(mm x mm)
minmaxminmaxSee Notes
MAX2620YesYes101050-16-22.5 to 5.2593.0 x 4.9?MAX/8$4.03 @1k
Design kits & evaluation modules
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX2620E/DActiveDICE SALES,;NA pin;DICE S;0°C to +70°CSee data sheet
MAX2620EUANo Longer AvailableMAX2620EUA+?MAX,;8 pin;15.6 mm?-40°C to +85°CNo
MAX2620EUA+Active?MAX,;8 pin;15.6 mm?-40°C to +85°CLead Free
MAX2620EUA+TActive?MAX,;8 pin;15.6 mm?-40°C to +85°CLead Free
MAX2620EUA-TNo Longer AvailableMAX2620EUA+T?MAX,;8 pin;15.6 mm?-40°C to +85°CNo
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