Features and Benefits
- Ultra-Low Noise:
- 231 dBc/Hz FOM Integer Mode
- 227 dBc/Hz FOM Fractional Mode
- Ultra Low Spurious Emissions:
- Less Than 60 dBc Fractional Spurious
- Differential Phase Detector Input
- 14-bit Reference Frequency Divider
- Lock Indicator Output
- Phase Measurement Capability
- GPIO (General Purpose Input/Output) Test Pin
- Cycle Slip Prevention Support with HMC984LP4E
- 24 pin, 4 × 4 mm, LP4E Package
HMC984LP4E is a high-performance, ultra-low phase noise, SiGe BiCMOS Phase-Frequency Detector and Charge Pump targeted to be used together with the HMC983LP5E (Fractional Frequency Divider) to together form a high performance, low noise, ultra low spurious emission fractional-N frequency synthesizer.
Although best performance and maximum features are achieved when used together with the HMC983LP5E, the HMC984LP4E can also be used as a stand-alone, low phase noise phase frequency detector.
The HMC984LP4E can receive differential VCO input, and a reference frequency as high as 150 MHz. It features a 14-bit reference frequency R-Divider, and automatic and/or configurable Lock Detect Indicator, as well as integrated CSP (Cycle Slip Prevention) capability, when used together with the HMC983LP5E, that significantly improves frequency lock time.
Integrated Charge Pump phase swap option enables seamless interfaced to VCOs and active loop filters with inverted polarity.
Additional features include adjustable Charge Pump gain and offset current that improve linearity and performance, and a Soft Reset feature that resets all register to default values without having to perform a power-cycle.
The HMC984LP4E is housed in a compact 24 pin 4×4 mm LP4 package.
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 evaluating the HMC983 and HMC984.
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.