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MAX2880：250MHz to 12.4GHz, High-Performance, Fractional/Integer-N PLL

High-Frequency PLL Breaks New Performance Barriers

The MAX2880 is a high-performance phase-locked loop (PLL) capable of operating in both integer-N and fractional-N modes. Combined with an external reference oscillator, loop filter, and VCO, the device forms an ultra-low noise and low-spur frequency synthesizer capable of accepting RF input frequencies of up to 12.4GHz. The MAX2880 consists of a high-frequency and low-noise-phase frequency detector (PFD), precision charge pump, 10-bit programmable reference counter, 16-bit integer N counter, and 12-bit variable modulus fractional modulator. The MAX2880 is controlled by a 3-wire serial interface and is compatible with 1.8V control logic. The device is available in a lead-free, RoHS-compliant, 20-pin TQFN and 16-pin TSSOP packages, and operates over an extended -40°C to +85°C temperature range.

Key Features Integer and Fractional-N Modes 250MHz to 12.4GHz Broadband RF Input Normalized In-Band Noise Floor -229dBc/Hz in Integer Mode -227dBc/Hz in Fractional Mode -10dBm to +5dBm Wide Input Sensitivity Low-Noise Phase Frequency Detector 125MHz in Fractional Mode 140MHz in Integer Mode Reference Frequency Up to 210MHz Operates from +2.8V to +3.6V Supply Cycle Slip Reduction and Fast Lock Software and Hardware Shutdown Software Lock Detect On-Chip Temperature Sensor Compatible with +1.8V Control Logic Phase Adjustment

MAX2880: Functional Diagram Applications/Uses Microwave Point-to-Point Systems RF DAC and ADC Clocks Satellite Communications Test and Measurement Wireless Infrastructure

DataSheet

Parametrics

Design kits & evaluation modules

• MAX2880EVKIT

Ordering Information