ICS3726M-02LFT

DATASHEET ICS3726-02 HIGH PERFORMANCE VCXO Description Features The ICS3726-02 is a low cost, low-jitter, high-performance VCXO designed to replace expensive discrete VCXOs modules. The ICS3726-02 offers a wid operating frequency range and high power supply noise rejection. Using ICS’ patented VCXO techniques, the device accepts an inexpensive external pullable crystal in the range of 24 to 36 MHz to produce a VCXO output clock at the same frequency. • • • • • • • • • The frequency of the on-chip VCXO is adjusted by an external control voltage input into pin VIN. Because VIN is a high-impedance input, it can be driven directly from an PWM RC integrator circuit. Frequency output increases with VIN voltage input. The usable range of VIN is 0 to 3.3 V. Packaged in 8-pin SOIC Operational frequency range of 24 MHz to 36 MHz Uses an inexpensive external pullable crystal On-chip patented VCXO with pull range of ±115 ppm VCXO tuning voltage of 0 to 3.3 V Output Enable control 12 mA output drive capability at TTL levels Advanced, low-power, sub-micron CMOS process Available in Pb (lead) free package This part is ideal for Set-Top Box, multimedia clock synthesizers and ADSL/VDSL applications. Block Diagram VDD VIN X1 24 to 36 MHz Pullable Crystal X2 Optional tuning crystal capacitors IDT™ / ICS™ HIGH PERFORMANCE VCXO Voltage Controlled Crystal Oscillator 24 to 36 MHz Clock (REFOUT) GND 1 OE ICS3726-02 REV C 030706 ICS3726-02 HIGH PERFORMANCE VCXO VCXO Pin Assignment X1 1 8 X2 NC 2 7 OE VI N 3 6 VDD GND 4 5 REFOUT I CS 3 7 2 6 - 0 2 8 - P i n ( 1 5 0 mi l ) S OI C Pin Descriptions Pin Number Pin Name Pin Type 1 X1 Input 2 NC — 3 VIN Input Control input to VCXO. 0 to 3.3 V signal which varies the VCXO output frequency. 4 GND Power Connect to ground. 5 REFOUT Output VCXO clock output. 6 VDD Power Connect to +3.3 V. 7 OE Input Output enable, OE=1 enables output, OE=0 disable output, internal pull-up. 8 X2 Input Crystal connection. Connect to a pullable 24 to 36 MHz crystal. IDT™ / ICS™ HIGH PERFORMANCE VCXO Pin Description Crystal connection. Connect to an external pullable crystal. Do not connect this pin to anything. 2 ICS3726-02 REV C 030706 ICS3726-02 HIGH PERFORMANCE VCXO VCXO External Component Selection The external crystal must be connected as close to the chip as possible and should be on the same side of the PCB as the ICS3726-02. There should be no via’s between the crystal pins and the X1 and X2 device pins. There should be no signal traces underneath or close to the crystal. See application note MAN05. The ICS3726-02 requires a minimum number of external components for proper operation. Decoupling Capacitors A decoupling capacitor of 0.01 µF should be connected between VDD and GND on pins 6 and 4 as close to the ICS3726-02 as possible. For optimum device performance, the decoupling capacitor should be mounted on the component side of the PCB. Avoid the use of vias in the decoupling circuit. Crystal Tuning Load Capacitors The crystal traces should include pads for small fixed capacitors, one between X1 and ground, and another between X2 and ground. Stuffing of these capacitors on the PCB is optional. The need for these capacitors is determined at system prototype evaluation, and is influenced by the particular crystal used (manufacture and frequency) and by PCB layout. The typical required capacitor value is 1 to 4 pF. This chip has internal load capacitors and is designed to work with surface mount crystals with 10 pF load capacitance. Series Termination Resistor When the PCB trace between the clock output and the load is over 1 inch, series termination should be used. To series terminate a 50Ω trace (a commonly used trace impedance), place a 33Ω resistor in series with the clock line, as close to the clock output pin as possible. The nominal impedance of the clock output is 20Ω. The procedure for determining the value of these capacitors can be found in application note MAN05. Quartz Crystal The ICS3726-02 VCXO function consists of the external crystal and the integrated VCXO oscillator circuit. To assure the best system performance (frequency pull range) and reliability, a crystal device with the recommended parameters (shown below) must be used, and the layout guidelines discussed in the following section shown must be followed. The oscillation frequency of a quartz crystal is determined by its “cut” and by the load capacitors connected to it. The ICS3726-02 incorporates on-chip variable load capacitors that pull (change) the frequency of the crystal. The crystal specified for use with the ICS3726-02 is designed to have zero frequency error when the total of on-chip + stray capacitance is 10 pF. Recommended Crystal Parameters: Initial Accuracy at 25°C Temperature Stability Aging Load Capacitance Shunt Capacitance, C0 C0/C1 Ratio Equivalent Series Resistance IDT™ / ICS™ HIGH PERFORMANCE VCXO ±20 ppm ±30 ppm ±20 ppm 14 pF 7 pF max 250 max 35 Ω max 3 ICS3726-02 REV C 030706 ICS3726-02 HIGH PERFORMANCE VCXO VCXO Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS3726-02. These ratings, which are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range. Item Rating Supply Voltage, VDD 7V All Inputs and Outputs -0.5 V to VDD+0.5 V Ambient Operating Temperature 0 to +70°C Storage Temperature -65 to +150°C Soldering Temperature 260°C Recommended Operation Conditions Parameter Ambient Operating Temperature Power Supply Voltage (measured in respect to GND) Reference crystal parameters IDT™ / ICS™ HIGH PERFORMANCE VCXO Min. Typ. Max. Units 0 – +70 °C +3.465 V +3.135 Refer to page 3 4 ICS3726-02 REV C 030706 ICS3726-02 HIGH PERFORMANCE VCXO VCXO DC Electrical Characteristics VDD=3.3 V ±5% , Ambient temperature 0 to +70°C, unless stated otherwise Parameter Symbol Conditions Operating Voltage VDD Output High Voltage VOH IOH = -12 mA Output Low Voltage VOL IOL = 12 mA Output High Voltage (CMOS Level) VOH IOH = -4 mA Operating Supply Current IDD No load Short Circuit Current IOS VIN, VCXO Control Voltage VIA Min. Typ. 3.135 Max. Units 3.465 V 2.4 V 0.4 VDD-0.4 V V 6 mA ±50 mA 0 3.3 V AC Electrical Characteristics VDD = 3.3 V ±5%, Ambient Temperature 0 to +70° C, unless stated otherwise Parameter Symbol Output Frequency FO Crystal Pullability FP VCXO Gain Conditions Min. Typ. 24 0V< VIN < 3.3 V, Note 1 Max. Units 36 + 115 MHz ppm VIN = VDD/2 + 1 V, Note 1 150 ppm/V Output Rise Time tOR 0.8 to 2.0 V, CL=15 pF 0.5 1.5 ns Output Fall Time tOF 2.0 to 0.8 V, CL=15 pF 0.6 1.5 ns Output Clock Duty Cycle tD Measured at 1.4 V, CL=15 pF 50 60 % Period Jitter RMS tJ CL=15 pF @35.328 MHz 8 ps Period Jitter P- P tJ CL=15 pF@35.328 MHz 90 ps Integrated Jitter RMS Integrated 12 kHz to 20 MHz @ 35.328 MHz 1 ps Phase Noise relative to Carrier @35.328 MHz Carrier frequency @10 Hz -60 dBc/Hz @100 Hz -88 dBc/Hz @1 kHz -117 dBc/Hz @10 kHz -135 dBc/Hz @100 kHz -150 dBc/Hz @1 MHz -145 dBc/Hz 40 Note 1: External crystal device must conform with Pullable Crystal Specifications listed on page 3. IDT™ / ICS™ HIGH PERFORMANCE VCXO 5 ICS3726-02 REV C 030706 ICS3726-02 HIGH PERFORMANCE VCXO VCXO Package Outline and Package Dimensions (8-pin SOIC) Package dimensions are kept current with JEDEC Publication No. 95 Millimeters Inches* 8 Symbol E A A1 B C D E e H h L α H INDEX AREA 1 2 D Min Max Min 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27 BASIC 5.80 6.20 0.25 0.50 0.40 1.27 0° 8° Max .0532 .0688 .0040 .0098 .013 .020 .0075 .0098 .1890 .1968 .1497 .1574 0.050 BASIC .2284 .2440 .010 .020 .016 .050 0° 8° *For reference only. Controlling dimensions in mm. A h x 45 A1 C -Ce SEATING PLANE B L .10 (.004) C Ordering Information Part / Order Number Marking Shipping Packaging Package Temperature ICS3726M-02 ICS3726M-02T ICS3726M-02LF ICS3726M-02LFT 3726M-02 3726M-02 3726M02L 3726M02L Tubes Tape and Reel Tubes Tape and Reel 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C Parts that are ordered with a "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments. IDT™ / ICS™ HIGH PERFORMANCE VCXO 6 ICS3726-02 REV C 030706 ICS3726-02 HIGH PERFORMANCE VCXO VCXO Revision History Rev. Originator Date C P.G. 03/07/06 IDT™ / ICS™ HIGH PERFORMANCE VCXO Description of Change Changed operational frequency range from 20/52 MHz to 24/36 MHz; updates to Pin Descriptions; numerous updates to typical values in AC chars. 7 ICS3726-02 REV C 030706 ICS3726-02 HIGH PERFORMANCE VCXO VCXO Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales For Tech Support 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Asia Pacific and Japan Europe Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 (outside U.S.) Integrated Device Technology Singapore (1997) Pte. Ltd. Reg. No. 199707558G 435 Orchard Road #20-03 Wisma Atria Singapore 238877 +65 6 887 5505 IDT Europe, Limited Prime House Barnett Wood Lane Leatherhead, Surrey United Kingdom KT22 7DE +44 1372 363 339 © 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA IMPORTANT NOTICE AND DISCLAIMER RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for developers skilled in the art designing with Renesas products. You are solely responsible for (1) selecting the appropriate products for your application, (2) designing, validating, and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. Renesas grants you permission to use these resources only for development of an application that uses Renesas products. Other reproduction or use of these resources is strictly prohibited. No license is granted to any other Renesas intellectual property or to any third party intellectual property. Renesas disclaims responsibility for, and you will fully indemnify Renesas and its representatives against, any claims, damages, costs, losses, or liabilities arising out of your use of these resources. Renesas' products are provided only subject to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources expands or otherwise alters any applicable warranties or warranty disclaimers for these products. (Rev.1.0 Mar 2020) Corporate Headquarters Contact Information TOYOSU FORESIA, 3-2-24 Toyosu, Koto-ku, Tokyo 135-0061, Japan www.renesas.com For further information on a product, technology, the most up-to-date version of a document, or your nearest sales office, please visit: www.renesas.com/contact/ Trademarks Renesas and the Renesas logo are trademarks of Renesas Electronics Corporation. All trademarks and registered trademarks are the property of their respective owners. © 2020 Renesas Electronics Corporation. All rights reserved.