AD9540

RECOMMENDED FOR NEW DESIGNS

Low Jitter, DDS-based Clock Generator and Synthesizer

Data Sheet (Rev. D) Product Selection Table

Part Models: 2
1ku List Price: Starting From $20.34

Viewing:

Overview

Excellent intrinsic jitter performance
200 MHz phase frequency detector inputs
655 MHz programmable input dividers for the phase frequency detector (÷M, ÷N) {M, N = 1 to 16} (bypassable)
Programmable RF divider (÷R) {R = 1, 2, 4, 8} (bypassable)
8 programmable phase/frequency profiles
400 MSPS internal DDS clock speed
48-bit frequency tuning word resolution

14-bit programmable phase offset
1.8 V supply for device operation
3.3 V supply for I/O, CML driver, and charge pump output
Software controlled power-down
48-lead LFCSP package
Programmable charge pump current (up to 4 mA)
Dual-mode PLL lock detect
655 MHz CML-mode PECL-compliant output driver

The AD9540 is Analog Devices’ first dedicated clocking product specifically designed to support the extremely stringent clocking requirements of the highest performance data converters. The device features high performance PLL (phase-locked loop) circuitry, including a flexible 200 MHz phase frequency detector and a digitally controlled charge pump current. The device also provides a low jitter, 655 MHz CML-mode, PECL-compliant output driver with programmable slew rates. External VCO rates up to 2.7 GHz are supported.

Extremely fine tuning resolution (steps less than 2.33 µHz) is another feature supported by this device. Information is loaded into the AD9540 via a serial I/O port that has a device write speed of 25 Mbps. The AD9540 frequency divider block can also be programmed to support a spread spectrum mode of operation.

The AD9540 is specified to operate over the extended automotive range of −40°C to +85°C.

Applications

Clocking high performance data converters
Base station clocking applications
Network (SONET/SDH) clocking
Gigabit Ethernet (GbE) clocking
Instrumentation clocking circuits
Agile LO frequency synthesis
Automotive radar
FM chirp source for radar and scanning systems
Test and measurement equipment
Acousto-optic device drivers

Part Models: 2
1ku List Price: Starting From $20.34

Documentation

DDS Design 05/13/2004

Digital Potentiometers Vary Amplitude In DDS Devices 05/29/2000

Digital Waveform Generator Provides Flexible Frequency Tuning for Sensor Measurement 12/07/2004

DDS Circuit Generates Precise PWM Waveforms 10/02/2003

DDS Device Produces Sawtooth Waveform 07/10/2003

DDS IC Initiates Synchronized Signals 07/20/2005

Understand the Effects of Clock Jitter and Phase Noise on Sampled Systems 12/07/2004

Video Portables and Cameras Get HDMI Outputs 04/13/2007

Two DDS ICs Implement Amplitude-shift Keying 12/25/2003

ADI Buys Korean Mobile TV Chip Maker 06/07/2006

400-MSample DDSs Run On Only +1.8 VDC 12/01/2002

Basics of Designing a Digital Radio Receiver (Radio 101) 03/06/1998

Product Highlight 1

Introducing Digital Up/Down Converters: VersaCOMM™ Reconfigurable Digital Converters 03/08/2008

Frequently Asked Question 1

FAQ 09/05/2025

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
AD9540BCPZ	48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
AD9540BCPZ-REEL7	48-Lead LFCSP (7mm x 7mm x 0.85mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 9, 2021 - 20_0126 Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
		PCN20_0126_Form Qualification Results Summary Material_Report Detailed Change Description Package Outline Drawing Package Outline Drawing Qualification Results Summary Qualification Results Summary Qualification Results Summary Qualification Results Summary
AD9540BCPZ	PRODUCTION
AD9540BCPZ-REEL7	PRODUCTION
Sep 13, 2017 - 16_0077 CANCELLED: Conversion of Select 4x4, 5x5, 6x6 and 7x7mm LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE Korea.
		PCN16_0077_Form Material_Report Detailed Parts List Detailed Parts List Package Outline Drawing Detailed Change Description Qualification Results Summary
AD9540BCPZ	PRODUCTION
AD9540BCPZ-REEL7	PRODUCTION

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

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts	Product Life Cycle	Description
Comparators 1
LTC6957		Low Phase Noise, Dual Output Buffer/Driver/Logic Converter
Phase-Locked Loop (PLL) Synthesizers 1
ADF4002	RECOMMENDED FOR NEW DESIGNS	Phase Detector / PLL Frequency Synthesizer

Tools & Simulations

ADIsimCLK Design and Evaluation Software

ADIsimCLK is the design tool developed specifically for Analog Devices' range of ultra-low jitter clock distribution and clock generation products. Whether your application is in wireless infrastructure, instrumentation, networking, broadband, ATE or other areas demanding predictable clock performance, ADIsimCLK will enable you to rapidly develop, evaluate and optimize your design.

Open Tool