MAXIM MAX2871ETJ+T

The MAX2871 is an ultra-wideband phase-locked loop (PLL) with integrated voltage control oscillators (VCOs) capable of operating in both integer-N and fractional-N modes. When combined with an external reference oscillator and loop filter, the MAX2871 is a high-performance frequency synthesizer capable of synthesizing frequencies from 23.5MHz to 6.0GHz while maintaining superior phase noise and spurious performance. The ultra-wide frequency range is achieved with the help of multiple integrated VCOs covering 3000MHz to 6000MHz, and output dividers ranging from 1 to 128. The device also provides dual differential output drivers, which can be independently programmed to deliver -1dBm to +8dBm differential output power. Both outputs can be muted by either software or hardware control. The MAX2871 is controlled by a 4-wire serial interface and is compatible with 1.8V control logic. The device is available in a lead-free, RoHS-compliant, 5mm×5mm, 32-pin TQFN package, and operates over an extended -40°C to +85°C temperature range. The MAX2871 has an improved feature set and better overall phase noise and is fully pin and software-compatible with the MAX2870.

• Output Binary Buffers/Dividers Enable Extended Frequency Range
• Divider Ratios of 1/2/4/8/16/32/64/128
• 23.5MHz to 6000MHz
• High-Performance Phase Frequency Detector (PFD) and Reference Frequency Reduces Spectral Noise
• PFD Up to 140MHz
• Reference Frequency Up to 210MHz
• Low Normalized Inband Phase Noise of -230dBc/Hz Reduces System Noise Floor Contribution
• Manual/Automatic VCO Selection Permits Fast Switching
• Output Phase Reset and Adjustment Allow Synchronization of Multiple Synthesizers
• On-Chip Temperature Sensor with 7-Bit ADC Ensures Optimum VCO Selection
• Cycle Slip Reduction and Fast Lock Features Improve Accuracy and Acquisition Time
• VCO Lock Maintained Over Entire Temperature Range Provides Glitch-Free Operation
• Dual Differential Programmable Outputs Maximize Flexibility of Use

• Wireless Infrastructure
• Clock Generation
• Test and Measurement
• Microwave Radios