P1707A PULSECORE | Alldatasheet

Document overview

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Technical content

Features

  • FCC approved method of EMI attenuation.
  • Generates a low EMI spread spectrum clock of the input frequency.
  • Optimized for frequency range from 60MHz to 175MHz.
  • Internal loop filter minimizes external components and board space.
  • Four selectable spread ranges.
  • Low inherent Cycle-to-cycle jitter.
  • 3.3V Operating Voltage.
  • Ultra-low power CMOS design.
  • 14.85 mA @3.3V, 140MHz
  • 16.69 mA @3.3V, 162MHz
  • 17.78 mA @3.3V, 175MHz
  • Supports notebook VGA and other LCD timing controller applications.
  • Pinout compatible to ICS MK1707 and Cypress CY25561/CY25560.
  • SSON/SBM pin for Spread Spectrum On/Off and Standby Mode controls.
  • Available in 8-pin SOIC and TSSOP Packages. Product Description The P1707A is a versatile spread spectrum frequency modulator designed specifically for input clock frequencies. The P1707A reduces electromagnetic interference (EMI) at the clock source, allowing system wide reduction of EMI of down stream clock and data dependent signals. The P1707A allows significant system cost savings by reducing the number of circuit board layers ferrite beads, shielding and other passive components that are traditionally required to pass EMI regulations. The P1707A modulates the output of a single PLL in order to “spread” the bandwidth of a synthesized clock, and more importantly, decreases the peak amplitudes of its harmonics. This results in significantly lower system EMI compared to the typical narrow band signal produced by oscillators and most frequency generators. Lowering EMI by increasing a signal’s bandwidth is called ‘spread spectrum clock generation’. The P1707A uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method.

Applications

The P1707A is targeted towards notebook LCD displays, and other displays using an LVDS interface, PC peripheral devices, and embedded systems. Block Diagram ModOUT CLKIN VSS Frequency Divider Feedback Divider Modulation Phase Detector Loop Filter VCO Output Divider PLL VDD SR0 SR1 SSON/SBM

rev 1.2 Notebook LCD Panel EMI Reduction IC 2 of 7 Notice: The information in this document is subject to change without notice. Pin Configuration Pin Description Pin# Pin Name Type Description

1 CLKIN I

Connect to externally generated clock signal. To put the part into standby mode, disable the input clock signal to this pin and pull SSON/SBM (pin 5) low. Refer Standby Mode Selection Table. 2 VDD P Connect to +3.3V. (Place a decoupling 0.1µF close to pin and ground) 3 VSS P Ground Connection. Connect to system ground. 4 ModOUT O Spread spectrum clock output. 5 SSON/SBM I Spread Spectrum On/Off and standby mode control. Refer Standby Mode Selection Table. This pin has an internal pull-up resistor. 6 SR1 I Digital logic input used to select Spreading Range. Refer Spread Spectrum Selection Table. This pin has an internal pull-up resistor. 7 SR0 I Digital logic input used to select Spreading Range. Refer Spread Spectrum Selection Table. This pin has an internal pull-up resistor. 8 NC - No connect. Standby Mode Selection CLKIN SSON/SBM Spread Spectrum ModOUT PLL Mode Disabled 0 N/A Disabled Disabled Standby Disabled 1 N/A Disabled Free Running Free Running Enabled 0 Off Referenc e Disabled Buffer out Enabled 1 On Normal Normal Normal Spread Range Selection SR1 SR0 Spreading Range Modulation Rate 0 0 ± 1.50% (F IN/80) * 34.72 KHz 0 1 ± 2.50% (F IN/80) * 34.72 KHz 1 0 ± 0.50% (F IN/80) * 34.72 KHz 1 1 ± 1.00% (F IN/80) * 34.72 KHz SSON/SBM 4 5 P1707A CLKIN VDD VSS ModOUT SR1 SR0 NC

rev 1.2 Notebook LCD Panel EMI Reduction IC 3 of 7 Notice: The information in this document is subject to change without notice. Absolute Maximum Ratings Symbol Parameter Rating Unit VDD, VIN Voltage on any pin with respect to Ground -0.5 to +4.6 V TSTG Storage temperature -65 to +125 °C TA Operating temperature -40 to +85 °C Ts Max. Soldering Temperature (10 sec) 260 °C TJ Junction Temperature 150 °C TDV Static Discharge Voltage (As per JEDEC STD22- A114-B) 2 KV Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability. Symbol Parameter Min Typ Max Unit VIL Input low voltage VSS – 0.3 - 0.8 V VIH Input high voltage 2.0 - VDD+ 0.3 V IIL Input low current (pull-up resistors on inputs SR0, SR1 and SSON/SBM) - - -35 µA IIH Input high current - - 35 µA IXOL X OUT output low current ( VXOL @ 0.4V, VDD = 3.3V) - 3 - mA IXOH X OUT output high current ( VXOH @ 2.5V, VDD = 3.3V) - 3 - mA VOL Output low voltage VDD= 3.3V, I OL = 20mA - - 0.4 V VOH Output high voltage VDD = 3.3V, I OH = 20mA 2.5 - - V ICC Dynamic supply current normal mode 3.3V and 10pF loading 8.46 12 17.78 mA IDD Static supply current standby mode - 0.6 - mA VDD Operating volt age 2.7 3.3 3.7 V tON Power up time (first locked clo ck cycle after power up) - 0.18 - mS ZOUT Clock output impedance - 20 - Ω Symbol Parameter Min Typ Max Unit fIN Input frequency 60 - 175 MHz fOUT Output frequency 60 - 175 MHz tJC Jitter (Cycle to cycle) - - 360 pS tD Output duty cycle 45 50 55 % *tLH and tHL are measured into a capacitive load of 15pF

rev 1.2 Notebook LCD Panel EMI Reduction IC 4 of 7 Notice: The information in this document is subject to change without notice.

Package Information

Mechanical Package Outline 8-Pin SOIC Package D E H D A2 A θ L C B e Dimensions Inches Millimeters Symbol Min Max Min Max A1 0.004 0.010 0.10 0.25 A 0.053 0.069 1.35 1.75 A2 0.049 0.059 1.25 1.50 B 0.012 0.020 0.31 0.51 C 0.007 0.010 0.18 0.25 D 0.193 BSC 4.90 BSC E 0.154 BSC 3.91 BSC e 0.050 BSC 1.27 BSC H 0.236 BSC 6.00 BSC L 0.016 0.050 0.41 1.27 θ 0° 8° 0° 8° Note: Controlling dimensions are millimeters SOIC – 0.074 grams unit weight

rev 1.2 Notebook LCD Panel EMI Reduction IC 5 of 7 Notice: The information in this document is subject to change without notice. E H A D B C L θ e Mechanical Package Outline 8-Pin TSSOP Dimensions Inches Millimeters Symbol Min Max Min Max A 0.043 1.10 A1 0.002 0.006 0.05 0.15 A2 0.033 0.037 0.85 0.95 B 0.008 0.012 0.19 0.30 c 0.004 0.008 0.09 0.20 D 0.114 0.122 2.90 3.10 E 0.169 0.177 4.30 4.50 e 0.026 BSC 0.65 BSC H 0.252 BSC 6.40 BSC L 0.020 0.028 0.50 0.70 θ 0° 8° 0° 8° Note: Controlling dimensions are millimeters TSSOP – 0.034 grams unit weight

rev 1.2 Notebook LCD Panel EMI Reduction IC 6 of 7 Notice: The information in this document is subject to change without notice. Ordering Codes Part Number Marking Package Type Qty per reel Temperature P1707AF-08ST P1707AF 8-pin SOIC, Tube, Pb-Free Commercial P1707AF-08SR P1707AF 8-pin SOIC, Tape & Reel, Pb Free 2500 Commercial P1707AF-08TT P1707AF 8-pin TSSO P, Tube, Pb Free Commercial P1707AF-08TR P1707AF 8-pin TSSOP, Tape and Reel, Pb Free 2500 Commercial P1707AG-08ST P1707AG 8-pin SOIC, Tube, Green Commercial P1707AG-08SR P1707AG 8-pin SOIC, Tape & Reel, Green 2500 Commercial P1707AG-08TT P1707AG 8-pin T SSOP, Tube, Green Commercial P1707AG-08TR P1707AG 8-pin TSSOP, Tape and Reel, Green 2500 Commercial Device Ordering Information P 1707AG-08XX Licensed under U.S Patent Nos 5,488,627 and 5,631,921 PIN COUNT Flow: P = Commercial Temperature Range (0°C to 70°C) I = Industrial Temperature Range (-40°C to +85°C) A = Automotive Temperature Range (-40°C to +125°C) DEVICE NUMBER F = LEAD FREE AND RoHS COMPLIANT PART G = GREEN PACKAGE, LEAD FREE, and RoHS Package: ST – SOIC, TUBE SR - SOIC, T/R TT – TSSOP, TUBE TR - TSSOP, T/R

rev 1.2 Notebook LCD Panel EMI Reduction IC 7 of 7 Notice: The information in this document is subject to change without notice. Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003 © Copyright 2007 PulseCore Semiconductor Corporation. All rights reserved. Our logo and name are trademarks or registered trademarks of PulseCore Semiconductor. All ot her brand and product names may be the trademarks of their respective companies. PulseCore reserves the right to make changes to this document and its products at any time without notice. PulseCore assumes no responsibility for any errors t hat may appear in this document. The data contained herein represents PulseCore’s best data and/or estimates at the time of issuance. PulseCore reserves the right to change or correct this data at any time, without notice. If the product descri bed herein is under development, significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not in tended to operate as, or provide, any guarantee or warrantee to any user or customer. PulseCore does not assume any responsibility or liability arising out of the app lication or use of any product described herein, and disclaims any express or implied warrant ies related to the sale and/or use of PulseCore products including liability or warranties related to fitness for a particular purpose, mercha ntability, or infringement of any intellec tual property rights, except as express agreed to in PulseCore’ s Terms and Conditions of Sale (which are available from PulseCore). All sales of PulseCore products are made exclusiv ely according to PulseCore’s Terms and Conditions of Sale. The purchase of products from PulseCore does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellect ual property rights of PulseCore or third partie s. PulseCore does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant injury to the user, and the inclusion of PulseC ore products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify PulseCore against all claims arising from such use. PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 Tel: 408-879-9077 Fax: 408-879-9018 www.pulsecoresemi.com Copyright © PulseCore Semiconductor All Rights Reserved Part Number: P1707A Document Version: v1.3