AD9959 Frequency Synthesizer: Pinout, Datasheet, Application Circuit
56 Termination 0.5mm Tin Direct Digital Synthesis AD9959 56 Pin 500MHz 1.8V 56-VFQFN Exposed Pad, CSP









56 Termination 0.5mm Tin Direct Digital Synthesis AD9959 56 Pin 500MHz 1.8V 56-VFQFN Exposed Pad, CSP
The AD9959 is a multichannel frequency synthesizer that incorporates four synchronous direct digital syntheses (DDS) cores with many user-programmable functions.
AD9959 Pinout

AD9959 Pinout
AD9959 CAD Model
Symbol

AD9959 Symbol
Footprint

AD9959 Footprint
3D Model

AD9959 3D Model
AD9959 Description
The AD9959 consists of four direct digital synthesizers (DDS) cores that provide independent frequency, phase, and amplitude control on each channel. This flexibility can be used to correct imbalances between signals due to analogue processing, such as filtering, amplification, or PCB layout-related mismatches. Because all channels share a common system clock, they are inherently synchronized. Synchronization of multiple devices is supported.
Specifications
- TypeParameter
- Lifecycle Status
Lifecycle Status refers to the current stage of an electronic component in its product life cycle, indicating whether it is active, obsolete, or transitioning between these states. An active status means the component is in production and available for purchase. An obsolete status indicates that the component is no longer being manufactured or supported, and manufacturers typically provide a limited time frame for support. Understanding the lifecycle status is crucial for design engineers to ensure continuity and reliability in their projects.
PRODUCTION (Last Updated: 1 month ago) - Factory Lead Time8 Weeks
- Contact Plating
Contact plating (finish) provides corrosion protection for base metals and optimizes the mechanical and electrical properties of the contact interfaces.
Tin - Mount
In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.
Surface Mount - Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
56-VFQFN Exposed Pad, CSP - Number of Pins56
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~85°C - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tray - JESD-609 Code
The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.
e3 - Pbfree Code
The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.
no - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
3 (168 Hours) - Number of Terminations56
- Termination
Termination in electronic components refers to the practice of matching the impedance of a circuit to prevent signal reflections and ensure maximum power transfer. It involves the use of resistors or other components at the end of transmission lines or connections. Proper termination is crucial in high-frequency applications to maintain signal integrity and reduce noise.
SMD/SMT - ECCN Code
An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.
EAR99 - Additional Feature
Any Feature, including a modified Existing Feature, that is not an Existing Feature.
ALSO REQUIRES 3.3V SUPPLY - Max Power Dissipation
The maximum power that the MOSFET can dissipate continuously under the specified thermal conditions.
680mW - Voltage - Supply
Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.
1.71V~1.96V - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
QUAD - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
NO LEAD - Peak Reflow Temperature (Cel)
Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.
260 - Supply Voltage
Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.
1.8V - Terminal Pitch
The center distance from one pole to the next.
0.5mm - Frequency
In electronic components, the parameter "Frequency" refers to the rate at which a signal oscillates or cycles within a given period of time. It is typically measured in Hertz (Hz) and represents how many times a signal completes a full cycle in one second. Frequency is a crucial aspect in electronic components as it determines the behavior and performance of various devices such as oscillators, filters, and communication systems. Understanding the frequency characteristics of components is essential for designing and analyzing electronic circuits to ensure proper functionality and compatibility with other components in a system.
500MHz - Time@Peak Reflow Temperature-Max (s)
Time@Peak Reflow Temperature-Max (s) refers to the maximum duration that an electronic component can be exposed to the peak reflow temperature during the soldering process, which is crucial for ensuring reliable solder joint formation without damaging the component.
30 - Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
AD9959 - Pin Count
a count of all of the component leads (or pins)
56 - Qualification Status
An indicator of formal certification of qualifications.
Not Qualified - Operating Supply Voltage
The voltage level by which an electrical system is designated and to which certain operating characteristics of the system are related.
1.8V - Interface
In electronic components, the term "Interface" refers to the point at which two different systems, devices, or components connect and interact with each other. It can involve physical connections such as ports, connectors, or cables, as well as communication protocols and standards that facilitate the exchange of data or signals between the connected entities. The interface serves as a bridge that enables seamless communication and interoperability between different parts of a system or between different systems altogether. Designing a reliable and efficient interface is crucial in ensuring proper functionality and performance of electronic components and systems.
Serial - Operating Supply Current
Operating Supply Current, also known as supply current or quiescent current, is a crucial parameter in electronic components that indicates the amount of current required for the device to operate under normal conditions. It represents the current drawn by the component from the power supply while it is functioning. This parameter is important for determining the power consumption of the component and is typically specified in datasheets to help designers calculate the overall power requirements of their circuits. Understanding the operating supply current is essential for ensuring proper functionality and efficiency of electronic systems.
180mA - Nominal Supply Current
Nominal current is the same as the rated current. It is the current drawn by the motor while delivering rated mechanical output at its shaft.
160mA - Max Supply Current
Max Supply Current refers to the maximum amount of electrical current that a component can draw from its power supply under normal operating conditions. It is a critical parameter that ensures the component operates reliably without exceeding its thermal limits or damaging internal circuitry. Exceeding this current can lead to overheating, performance degradation, or failure of the component. Understanding this parameter is essential for designing circuits that provide adequate power while avoiding overload situations.
185mA - uPs/uCs/Peripheral ICs Type
The parameter "uPs/uCs/Peripheral ICs Type" refers to the classification of various integrated circuits used in electronic devices. It encompasses microprocessors (uPs), microcontrollers (uCs), and peripheral integrated circuits that provide additional functionalities. This classification helps in identifying the specific type of chip used for processing tasks, controlling hardware, or interfacing with other components in a system. Understanding this parameter is essential for selecting the appropriate electronic components for a given application.
DSP PERIPHERAL, NUMERIC CONTROLLED OSCILLATOR - Number of Bits10
- Sampling Rate
often described in the context of signal processing as the number of samples per time.
500 Msps - Boundary Scan
Boundary scan is a testing technique used in electronic components to verify the interconnections between integrated circuits on a printed circuit board. It allows for the testing of digital circuits by providing a way to shift data in and out of devices through a serial interface. This method helps in identifying faults such as short circuits, open circuits, and incorrect connections without the need for physical access to the individual components. Boundary scan is commonly used during manufacturing, testing, and debugging processes to ensure the quality and reliability of electronic products.
NO - Low Power Mode
Low Power Mode is a feature found in electronic components, such as microcontrollers, processors, and devices, that allows them to operate at reduced power consumption levels. When activated, the component typically reduces its clock speed, voltage, or disables certain functions to conserve energy. This mode is often used to extend battery life in portable devices or reduce overall power consumption in energy-efficient systems. Low Power Mode can be triggered automatically based on certain conditions, such as low battery levels, or manually by the user or software. It is a crucial feature in modern electronics to balance performance with energy efficiency.
YES - Conversion Rate
the number of conversions divided by the total number of visitors.
500 Msps - Number of D/A Converters4
- Resolution (Bits)
Resolution (Bits) in electronic components refers to the number of bits used to represent the analog signal in digital form. It indicates the level of detail or precision with which the analog signal can be converted into digital data. A higher resolution means more bits are used, allowing for finer distinctions to be made between different signal levels. For example, an 8-bit resolution can represent 256 different levels, while a 16-bit resolution can represent 65,536 levels. In general, a higher resolution leads to better accuracy and fidelity in the digital representation of the original analog signal.
10 b - Tuning Word Width (Bits)
The parameter "Tuning Word Width (Bits)" in electronic components refers to the number of bits used to represent the tuning word in a digital tuning system. The tuning word is a digital value that controls the frequency or other parameters of the component, such as a voltage-controlled oscillator or a digital-to-analog converter. The width of the tuning word determines the resolution and range of values that can be represented, with a higher number of bits providing finer control and a larger range of possible values. In general, a larger tuning word width allows for more precise tuning and better performance of the electronic component.
32b - Height830μm
- Length8mm
- Width8mm
- REACH SVHC
The parameter "REACH SVHC" in electronic components refers to the compliance with the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation regarding Substances of Very High Concern (SVHC). SVHCs are substances that may have serious effects on human health or the environment, and their use is regulated under REACH to ensure their safe handling and minimize their impact.Manufacturers of electronic components need to declare if their products contain any SVHCs above a certain threshold concentration and provide information on the safe use of these substances. This information allows customers to make informed decisions about the potential risks associated with using the components and take appropriate measures to mitigate any hazards.Ensuring compliance with REACH SVHC requirements is essential for electronics manufacturers to meet regulatory standards, protect human health and the environment, and maintain transparency in their supply chain. It also demonstrates a commitment to sustainability and responsible manufacturing practices in the electronics industry.
No SVHC - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant - Lead Free
Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.
Contains Lead
Parts with Similar Specs
- ImagePart NumberManufacturerPackage / CaseNumber of PinsInterfaceSupply VoltageTerminal PitchMoisture Sensitivity Level (MSL)RoHS StatusTerminal PositionView Compare
AD9959BCPZ
56-VFQFN Exposed Pad, CSP
56
Serial
1.8 V
0.5 mm
3 (168 Hours)
ROHS3 Compliant
QUAD
40-VFQFN Exposed Pad, CSP
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-
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3 (168 Hours)
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QUAD
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AD9959 Features
4 synchronized DDS channels @ 500 MSPS
Independent frequency/phase/amplitude control between channels
Matched latencies for frequency/phase/amplitude changes
Excellent channel-to-channel isolation (>65 dB)
Linear frequency/phase/amplitude sweeping capability
Up to 16 levels of frequency/phase/amplitude modulation (pin-selectable)
4 integrated 10-bit digital-to-analogue converters (DACs)
Individually programmable DAC full-scale currents
0.12 Hz or better frequency tuning resolution
14-bit phase offset resolution
10-bit output amplitude scaling resolution
Serial I/O port interface (SPI) with enhanced data throughput
Software-/hardware-controlled power-down
Dual supply operation (1.8 V DDS core/3.3 V serial I/O)
Multiple device synchronization
Selectable 4× to 20× REFCLK multiplier (PLL)
Selectable REFCLK crystal oscillator
56-lead LFCSP package
AD9959 Functional Block Diagram

AD9959 Functional Block Diagram
AD9959 Application
Agile local oscillators
Phased array radars/sonars
Instrumentation
Synchronized clocking
RF source for AOTF
AD9959 Application Circuit

AD9959 Application Circuit-1

AD9959 Application Circuit-2

AD9959 Application Circuit-3

AD9959 Application Circuit-4

AD9959 Application Circuit-5

AD9959 Application Circuit-6

AD9959 Application Circuit-7
AD9959 Mode of Operation
There are many combinations of modes (for example, single tone, modulation, linear sweep) that the AD9959 can perform simultaneously. However, some modes require multiple data pins, which can impose limitations. The following guidelines can help determine if a specific combination of modes can be performed simultaneously by the AD9959.
For more detailed info in the datasheet below.
AD9959 Dimensions

AD9959 Dimensions
AD9959 Manufacturer
Analog Devices is an international market leader in the design, production, and commercialization of a large range of high-performance integrated circuits (ICs) for analogue, mixed-signal, and digital signals (DSP) processing of almost all electronic systems. Since we started in 1965, the focus has been on the engineering challenge in electronic equipment related to signal to process. Our signal processing solutions, utilized by over 100,000 customers worldwide, play a key role in the conversion, conditioning, and processing of real-world events such as temperature, pressure, sonority, illumination, speed, and movement to electric signals for a wide range of electronic devices.
Datasheet PDF
- Datasheets :
- Design Resources :
- ConflictMineralStatement :
Trend Analysis
What is AD9959?
The AD9959 is a multichannel frequency synthesizer that incorporates four synchronous direct digital syntheses (DDS) cores with many user-programmable functions. The evaluation board software provides a graphical user interface for easy communication with the device along with many user-friendly features such as the “mouse-over effect.” Many elements of the software can be clarified by placing your mouse over the element. Figure 19 in the user guide shows how this feature works when users place their mouse over the Ref Clock box.
What temperature range does the AD9959 operate?
The AD9959 operates over the industrial temperature range of −40°C to +85°C.
What is the package of AD9959?
The AD9959 comes in a space-saving 56-lead LFCSP package.
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