ADF4368

RECOMMENDED FOR NEW DESIGNS

Microwave Wideband Synthesizer with Integrated VCO

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $95.23

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Overview

Output frequency range: 800 MHz to 12.8 GHz
Jitter < 30 fs_RMS f_OUT = 9.001 GHz, f_REF = f_PFD = 250 MHz, fractional mode
Wideband phase noise floor: −160 dBc/Hz at 12.8 GHz
PLL specifications
- Normalized in-band phase noise floor
  - −239 dBc/Hz: integer, −237 dBc/Hz: fractional mode
- Normalized 1/f phase noise floor
  - −287 dBc/Hz: normalized to 1 Hz
  - −147 dBc/Hz: normalized to 1 GHz at 10 kHz
- 625 MHz phase detector frequency integer mode
- 250 MHz phase detector frequency fractional mode
- 25-bit fixed, 49-bit combined fractional modulus
- 4 GHz reference input frequency
- Typical −95 dBc PFD spurs

Reference to output delay specifications
- Temperature coefficient: 0.06 ps/°C
- Adjustment step size: <1 ps
Multichip output phase alignment
- Through SYNC pin or by EZSync method
3.3 V and 5 V power supplies
ADIsimPLL^™ loop filter design tool support
Available in 48-lead, 7 mm × 7 mm LGA package
−40°C to +125°C operating junction temperature

The ADF4368 is a high performance, ultra-low jitter, integer-N and fractional-N phase-locked loop (PLL) with integrated VCO ideally suited for frequency conversion applications.

The high performance PLL has a figure of merit of −239 dBc/Hz, very low 1/f noise of normalized −287 dBc/Hz and high PFD frequency that can achieve ultra-low in-band noise and integrated jitter. The ADF4368 can generate any frequency from 800 MHz to 12.8 GHz without an internal doubler, which eliminates the need for sub-harmonic filters. The Σ-Δ modulator includes a 25-bit fixed modulus that allows hertz frequency resolution and an additional 17-bit variable modulus, which allows even finer resolution and flexibility for frequency planning. The 9 dBm output power at 12.8 GHz in single-ended configuration with 16 step power adjust feature makes it very useful for any application.

For multiple frequency conversion applications, such as phase array radar or massive MIMO systems, the outputs of multiple ADF4368 can be aligned by using the SYNC input or EZSync^™. The EZSync method is used when it is difficult to distribute the SYNC signal to all devices precisely. For applications that require deterministic delay or delay adjustment capability, a programmable reference to output delay with <1 ps resolution is provided. The reference to output delay is guaranteed across multiple devices and temperature, allowing for predictable and precise multichip alignment.

The simplicity of the ADF4368 block diagram eases development time with a simplified serial-peripheral interface (SPI) register map, external SYNC input, and repeatable multichip phase alignment both in integer mode and fractional mode.

APPLICATIONS

Wireless infrastructure (MC-GSM, 5G)

Test and measurement

Aerospace and defense

Part Models: 2
1ku List Price: Starting From $95.23

Documentation

Data Sheet 1

ADF4368: Microwave Wideband Synthesizer with Integrated VCO Data Sheet (Rev.0) 03/29/2023

User Guide 1

UG-2102: Evaluating the ADF4368, Microwave Wideband Synthesizer with Integrated VCO (Rev.0) 03/29/2023

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADF4368BCCZ	48-Terminal Land Grid Array [LGA] (7mm x 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADF4368BCCZ-RL7	48-Terminal Land Grid Array [LGA] (7mm x 7mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

Device Drivers 2

Can't find the software or driver you need?

Hardware Ecosystem

Parts	Product Life Cycle	Description
Clock ICs 2
LTC6952	LAST TIME BUY	Ultralow Jitter, 4.5GHz PLL with 11 Outputs and JESD204B / JESD204C Support
LTC6953	LAST TIME BUY	Ultralow Jitter, 4.5GHz Clock Distributor with 11 Outputs and JESD204B/JESD204C Support
Comparators 1
LTC6957		Low Phase Noise, Dual Output Buffer/Driver/Logic Converter
Fanout Buffers & Splitters 2
LTC6954	LAST TIME BUY	Low Phase Noise, Triple Output Clock Distribution Divider/Driver

LTC6955	LAST TIME BUY	Ultralow Jitter, 7.5GHz, 11 Output Fanout Buffer Family
LDO Linear Regulators 4
LT3041	RECOMMENDED FOR NEW DESIGNS	20 V, 1 A, Ultra-Low Noise, Ultra-High PSRR Linear Regulator with VIOC Control
ADM7151	RECOMMENDED FOR NEW DESIGNS	800 mA Ultralow Noise, High PSRR, RF Linear Regulator
ADM7150	RECOMMENDED FOR NEW DESIGNS	800 mA, Ultra Low Noise/High PSRR LDO
LT3045	RECOMMENDED FOR NEW DESIGNS	20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator

Tools & Simulations

ADIsimPLL™

ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.

Open Tool

IBIS Model 1

ADF4368 IBIS Model

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

Evaluating the ADF4368, Microwave Wideband Synthesizer with Integrated VCO

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Features and Benefits

Self-contained board, including ADF4368 frequency synthesizer with integrated VCO, loop filter, USB interface, on-board reference oscillator, propagation delay calibration paths, and voltage regulators
Windows^®-based software allows control of synthesizer functions from a PC
Externally powered by 6 V

Product Details

The EV-ADF4368SD1Z evaluates the performance of the ADF4368 fractional frequency synthesizer with an integrated voltage controlled oscillator (VCO) for phase-locked loops (PLLs). A photograph of the EV-ADF4368SD1Z is shown in Figure 1 of the user guide. The EV-ADF4368SD1Z contains the ADF4368 frequency synthesizer with an integrated VCO, a USB interface, power supply connectors, on-board reference oscillator, propagation delay calibration paths, and Subminiature Version A (SMA) connectors. The outputs are AC-coupled with 50 Ω transmission lines making the outputs suitable to drive 50 Ω impedance instruments. The EV-ADF4368SD1Z requires an SDP-S board (not supplied with the kit). The SDP-S allows software programming of the EV-ADF4368SD1Z with ACE software.

Full specifications on the ADF4368 frequency synthesizer are available in the ADF4368 data sheet available from Analog Devices, Inc., and must be consulted with the user guide when using the EV-ADF4368SD1Z evaluation board.