Features and Benefits
- Input frequency range: 500 MHz to 8000 MHz
- Fractional-N synthesizer and integer-N synthesizer
- Phase frequency detector (PFD) up to 125 MHz
- High resolution 38-bit modulus
- Separate charge pump supply (VP) allows extended tuning voltage in 5 V systems
- Programmable divide by 1, 2, 4, 8, 16, 32, or 64 output
- Differential and single-ended reference inputs
- Power supply: 3.3 V ± 5%
- Logic compatibility: 1.8 V
- Programmable dual-modulus prescaler (P) of 4/5 or 8/9
- Programmable output power level
- 3-wire serial interface
- Analog and digital lock detect
The ADF4155 allows implementation of fractional-N or integer-N phase-locked loop (PLL) frequency synthesizers when used with an external loop filter, external voltage controlled oscillator (VCO), and external reference frequency.
The ADF4155 is for use with external VCO parts up to an 8 GHz operating frequency. The high resolution programmable modulus allows synthesis of exact frequencies with 0 Hz error.
The VCO frequency can be divided by 1, 2, 4, 8, 16, 32, or 64 to allow the user to generate RF output frequencies as low as 7.8125 MHz.
Control of all on-chip registers is through a simple 3-wire interface. The device operates with a nominal power supply of 3.3 V ± 5% and can be powered down when not in use.
The ADF4155 is available in a 24-lead, 4 mm × 4 mm LFCSP package.
- Wireless infrastructure (W-CDMA, TD-SCDMA, WiMAX, GSM, PCS, DCS, DECT)
- Point to point/point to multipoint microwave links
- Test equipment
- Wireless LANs, CATV equipment
- Clock generation
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
This page contains ordering information for the evaluation board used to evaluate the ADF4155 integer-N / fractional-N PLL synthesizer.
Software & Systems Requirements
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.