91730AMLF

ICS91730 RENESAS | Alldatasheet

Document overview

• Manufacturer or author: mamiller
• PDF pages: 12

Technical content

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR ICS91730 IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 1 ICS91730 REV F 061611 Features/Benefits

• ICS91730 is a Spread Spectrum Clock targeted for Mobile PC and LCD panel applications that generates an EMI-optimized clock signal (EMI peak reduction of 7-14 dB on 3rd-19th harmonics) through use of Spread Spectrum techniques.
• ICS91730 focuses on the lower input frequency range of 14.318 to 80.00 MHz with a spread modulation of 20kHz to 40kHz. Specifications
• Supply Voltages: VDD = 3.3V ±0.3V
• Frequency range: 14.318 MHz <Fin > 80 MHz
• Cyc to Cyc jitter: <150ps
• Output duty cycle 45-55%
• 0°C to +85°C operation
• 8-pin SOIC
• Reference input Pin Configuration Functionality Block Diagram CLKIN 18 PD#* VDD 27 SCLK GND 36 SDATA CLKOUT 45 REF_OUT/FS_IN1 *

8 Pin SOIC

• Int ernal Pull-Up Resistor FSIN_1 0 -0.8 down spread 1 -1.25 down spread27.00MHz in --> 27.00MHz out MHz Spread % default

14.318 MHz in --> 27MHz out

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 2 ICS91730 REV F 061611 Pin Descriptions PIN # PIN NAME PIN TYPE DESCRIPTION 1C L K I N P W R I n put for reference clock. 2V D D I N P o w e r s u pply, nominal 3.3V 3 GND OUT Ground pin . 4 CLKOUT I/O Modulated clock out put. Un-modulated 3.3V reference clock out put. Frequency select latch in put. Refer to the functionalit y table. 6 SDATA PWR Data pin for SMBus circuitr y, 5V tolerant. 7 SCLK PWR Clock pin of SMBus circuitr y, 5V tolerant. 8P D # * P W R Asynchronous active low input pin, with 120Kohm internal pull-up resistor, used to power down the device. The internal clocks are disabled and the VCO and the cr ystal are stopped. * Internal Pull-Up Resistor ** Internal Pull-Down Resistor I/OR EF_OUT/FS_IN1*5

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 3 ICS91730 REV F 061611 Table 1: Frequency Configuration (see I2C Byte0) Above is the hard coded 5 bit (32 entry) ROM table. FS3:0 are ONL Y accessible through I2C software programming bits (byte0 bits5:7). FS4 can also be decoded from FS_IN1 latched input hardware pins. FS_IN1 → FS4. Upon power-up the default is to use hardware selection of FS_IN1 latched value. FS3 = 0, FS2 = 0, FS1 = 0, FS0 = 1 upon power-up (refer to the functionality table on page 1). To access non-default spread entries in the ROM, byte0 programming should be used. In order to change the power up default of FS_IN1 = 1 (-1.25% down spread) to any other spread % entry, first change byte0bit 0 to software selection by switching this bit to a ‘1’ and then program the desired percentage by changing byte0 bits 7:3. FS4 FS3 FS2 FS1 FS0 Sprd Type Sprd % 00000 0 . 6 0 00001 0.80 00010 1.00 00011 1 . 2 5 00100 1 . 5 0 00101 2.00 00110 0 . 5 0 00111 1.00 01000 0 . 6 0 01001 1 . 0 0 01010 -0.80 01011 C T R S P D +/-0.3 01100 1.50 01101 1.75 01110 2 . 0 0 01111 2 . 5 0 10000 3 . 0 0 10001 1.25 10010 0 . 4 0 10011 0 . 5 0 10100 0 . 7 0 10101 1 . 0 0 10110 1 . 2 0 10111 1 . 5 0 11000 0 . 6 0 11001 0 . 8 0 11010 1 . 0 0 11011 1.25 11100 1.50 11101 2.00 11110 0 . 5 0 11111 1.00 DOWN SPREAD (-) DOWN SPREAD (-) 48in/48out 66in/66out DOWN SPREAD (-) CENTER SPD (+/-) 14in/27out DOWN SPREAD (-) CENTER SPD (+/-) 14in/14out 27in/27out CENTER SPD (+/-)

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 4 ICS91730 REV F 061611 General SMBus Serial Interface Information How to Write

• Controller (host) sends a start bit
• Controller (host) sends the write address
• IDT clock will acknowledge
• Controller (host) sends the beginning byte location = N
• IDT clock will acknowledge
• Controller (host) sends the byte count = X
• IDT clock will acknowledge
• Controller (host) starts sending Byte N through Byte N+X-1
• IDT clock will acknowledge each byte one at a time
• Controller (host) sends a Stop bit How to Read
• Controller (host) will send a start bit
• Controller (host) sends the write address
• IDT clock will acknowledge
• Controller (host) sends the beginning byte location = N
• IDT clock will acknowledge
• Controller (host) will send a separate start bit
• Controller (host) sends the read address
• IDT clock will acknowledge
• IDT clock will send the data byte count = X
• IDT clock sends Byte N+X-1
• IDT clock sends Byte 0 through Byte X (if X(H) was w ritten to Byte 8)
• Controller (host) will need to acknowledge each byte
• Controller (host) will send a not acknowledge bit
• Controller (host) will send a stop bit Index Block Write Operation Controller (Host) IDT (Slave/Receiver) Ts t a r T b i t Slave Address WR WRite ACK Beginning Byte = N ACK Data Byte Count = X ACK Beginning Byte N X Byte ACK O O O O O O Byte N + X - 1 ACK Ps t o P b i t Read Address Write Address D5(H) D4(H) Index Block Read Operation Controller (Host) IDT (Slave/Receiver) Ts t a r T b i t Slave Address WR WRite ACK Beginning Byte = N ACK RT Repeat starT Slave Address RD ReaD ACK Data Byte Count=X ACK X Byte Beginning Byte N ACK O O O O O O Byte N + X - 1 N Not acknowledge Ps t o P b i t

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 5 ICS91730 REV F 061611 Byte

0 Pin # Name Control Function 0 1 PWD

Bit 7 - FS0 Spread/FS0 RW 1 Bit 6 - FS1 Spread/FS1 RW 0 Bit 5 FS2 Spread/FS2 RW 0 Bit 4 FS3 Spread/FS3 RW 0 Bit 3 FS4 FS4 RW 0 Bit 2 PD# Tri_Sate PD# Tri_Sate RW Hi-Z LOW 1 Bit 1 Spread Enable Spread Enable RW OFF ON 1 Bit 0 HW/SW Control Spread Spectrum Control FS 3:4 Hard/Software Select RW HW SW 0 Byte

1 Pin # Name Control Function 0 1 PWD

Bit 7 REF_OUT REF_OUT_Enable RW Disable Enable 1 Bit 6 - REF_OUT Slew Rate REF-OUT RW Nominal Fast 1 Bit 5 FS-IN_1 FS-IN_1 Readback R - - X Bit 4 (Reserved) (Reserved) R- -0 Bit 3 CLK_OUT Slew Rate CLK-OUT RW Nominal Fast 1 Bit 2 CLK_OUT CLK_OUT_Enable RW Disable Enable 1 Bit 1 (Reserved) (Reserved) R- -1 Bit 0 (Reserved) (Reserved) R- -1 Byte

2 Pin # Name Control Function 0 1 PWD

Bit 7 x- (Reserved) -- -1 Bit 6 x (Reserved) (Reserved) RW Disable Enable 1 Bit 5 x (Reserved) (Reserved) RW Disable Enable 1 Bit 4 x (Reserved) (Reserved) RW Disable Enable 1 Bit 3 x (Reserved) (Reserved) RW Disable Enable 1 Bit 2 x (Reserved) (Reserved) RW Disable Enable 1 Bit 1 x (Reserved) (Reserved) RW Disable Enable 1 Bit 0 x (Reserved) (Reserved) RW Disable Enable 1 Byte

3 Pin # Name Control Function 0 1 PWD

Bit 7 X (Reserved) (Reserved) RW - - 1 Bit 6 X (Reserved) (Reserved) RW - - 1 Bit 5 X (Reserved) (Reserved) RW - - 1 Bit 4 X (Reserved) (Reserved) RW - - 1 Bit 3 x (Reserved) (Reserved) RW - - 1 Bit 2 X (Reserved) (Reserved) RW - - 1 Bit 1 X (Reserved) (Reserved) RW - - 1 Bit 0 X (Reserved) (Reserved) RW - - 1 Affected Pin Affected Pin Affected Pin Affected Pin Srpead Pecentage See Table1 These are I2C bits only Type Bit Control Type Bit Control Bit Control Type Type Bit Control

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 6 ICS91730 REV F 061611 Byte

4 Pin # Name Control Function 0 1 PWD

Bit 7 X (Reserved) (Reserved) RW -- 1 Bit 6 X (Reserved) (Reserved) RW -- 1 Bit 5 X (Reserved) (Reserved) RW -- 1 Bit 4 X (Reserved) (Reserved) RW -- 1 Bit 3 X (Reserved) (Reserved) RW -- 1 Bit 2 X (Reserved) (Reserved) RW -- 1 Bit 1 X (Reserved) (Reserved) RW -- 1 Bit 0 X (Reserved) (Reserved) RW -- 1 Byte

5 Pin # Name Control Function 0 1 PWD

Bit 7 X (Reserved) (Reserved) - -- 1 Bit 6 X (Reserved) (Reserved) - -- 1 Bit 5 X (Reserved) (Reserved) - - - 1 Bit 4 X (Reserved) (Reserved) - - - 1 Bit 3 X (Reserved) (Reserved) RW -- 1 Bit 2 X (Reserved) (Reserved) RW -- 1 Bit 1 X (Reserved) (Reserved) RW -- 1 Bit 0 X (Reserved) (Reserved) RW -- 1 Byte

6 Pin # Name Control Function 0 1 PWD

Bit 7 X Revision ID Bit 3 (Reserved) R- -1 Bit 6 X Revision ID Bit 2 (Reserved) R- -1 Bit 5 X Revision ID Bit 1 (Reserved) R- -1 Bit 4 X Revision ID Bit 0 (Reserved) R- -1 Bit 3 X Vendor ID Bit 3 (Reserved) R- -1 Bit 2 X Vendor ID Bit 2 (Reserved) R- -1 Bit 1 X Vendor ID Bit 1 (Reserved) R- -1 Bit 0 X Vendor ID Bit 0 (Reserved) R- -1 Affected Pin Type Bit Control Type Bit ControlAffected Pin Affected Pin Type Bit Control

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 7 ICS91730 REV F 061611 Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS91730. These ratings, which are standard values for IDT 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. Electrical Characteristics–Input/Supply/Common Output Parameters TA = 0 - 85°C; Supply Voltage V DD = 3.3 V +/-5% PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input High Voltage V IH 2V DD + 0.3 V Input Low Voltage V IL VSS - 0.3 0.8 V Input High Current I IH VIN = VDD -5 5 mA Input Low Current I IL1 VIN = 0 V; Inputs with no pull-up resistors -5 mA Powerdown Current I DD3.3PD 15 m A fin = 14.318MHz 27 41 mA fin = 66.67MHz 32 50 mA Input Frequency Fi V DD = 3.3 V 14.318 MHz Pin Inductance Lpin 7n H CIN Logic Inputs 5 pF COUT Output pin capacitance 6 pF CINX X1 & X2 pins 27 36 45 pF Transition time Ttra ns To 1st crossing of target frequency 3 ms Settling time Ts From 1st crossing to 1% target frequency 3 ms Clk Stabilization 1 TSTAB From VDD = 3.3 V to 1% target frequency 3 ms Delay tPZH ,tPZL Output enable delay (all outputs) 1 10 ns Guaranteed by design, not 100% tested in production. Input Capacitance Operating Current IDD3.3OP Operating current depends on both the input and output frequencies. The values shown represent the upper and lower extremes. The higher the input/output frequency, the higher the current draw. The relationship is linear.

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 8 ICS91730 REV F 061611 Electrical Characteristics–CLKOUT Electrical Characteristics–REF TA = 0 - 85°C; VDD = 3.3V +/-5%; C L = 15 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Output High Voltage V OH 3 IOH = -1 mA 2.4 V Output Low Voltage V OL3 IOL = 1 mA 0.4 Rise Time tr3 V OL = 0.41V, VOH = 0.86V 0.5 0.6 1 ns Fall Time tf3 V OH = 0.86V VOL = 0.41V 0.5 0.6 1 ns Duty Cycle dt3 measurement from differential wavefrom - 0.35V to +035V 45 50 55 % Jitter, Cycle to cycle tjc yc-cy c VT = 50% 50 150 ps Guaranteed by design, not 100% tested in production. TA = 0 - 85°C; VDD = 3.3V +/-5%; C L = 15 pF (unless otherwise specified) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Output Frequency F O1 14.318 MHz Output Impedance R DSP1 VO = VDD*(0.5) 20 48 60 Ω Output High Voltage V OH IOH = -1 mA 2.4 V Output Low Voltage V OL IOL = 1 mA 0.4 V Output High Current IOH V OH@MIN = 1.0 V, V OH@MAX = 3.135 V -29 -23 mA Output Low Current I OL 1 VOL @MIN = 1.95 V, VOL @MAX = 0.4 V 29 27 mA Rise Time t r1 VOL = 0.4 V, VOH = 2.4 V 1 1.2 2 ns Fall Time t f1 VOH = 2.4 V, VOL = 0.4 V 1 1.2 2 ns Duty Cycle d t1 VT = 1 . 5 V 4 55 15 5% Jitter t jc yc-cy c VT = 1.5 V 105 300 ps Guaranteed by design, not 100% tested in production.

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 9 ICS91730 REV F 061611 Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Body) Package dimensions are kept current with JEDEC Publication No. 95

Ordering Information

"LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant. “A” is the device revision designator (will not correlate with the datasheet revision). While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) 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 IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. INDEX AREA 1 2 D E SEATING PLANE A e - C - B .10 (.004) C C L H h x 45 Millimeters Inches Symbol Min Max Min Max A 1.35 1.75 .0532 .0688 A1 0.10 0.25 .0040 .0098 B 0 . 3 30 . 5 1. 0 1 3. 0 2 0 C 0.19 0.25 .0075 .0098 D 4.80 5.00 .1890 .1968 E 3.80 4.00 .1497 .1574 e 1.27 BASIC 0.050 BASIC H 5.80 6.20 .2284 .2440 h 0 . 2 50 . 5 0. 0 1 0. 0 2 0 L 0 . 4 01 . 2 7. 0 1 6. 0 5 0 α 0° 8° 0° 8° Part / Order Number Shipping Packaging Package Temperature 91730AMLF Tubes 8-pin SOIC 0 to +85°C 91730AMLFT Tape and Reel 8-pin SOIC 0 to +85°C

LOW EMI, SPREAD MODULATING, CLOCK GENERATOR IDT® LOW EMI, SPREAD MODULATING, CLOCK GENERATOR 10 ICS91730 REV F 061611

Revision History

Issue Date Who Description Page # 06/25/04 Add Lead Free package description to Ordering Infor mation 10 06/29/04 Add Revision History table to datasheet. 11 05/23/05 1. Revise ABS max ratings. 2. Updated REF Electrical Characteristics table. . U pdated LF ordering information from "lead free" to "RoHS compliant" . 8- 06/04/08 Updated MLF ordering info 9 06/16/11 RDW 1. Added operating current specs that were inadvertantly ommitted 2. Updated ordering info to latest format . C hanged CL from "10-20 pF" to 15 pF 1, 7-9 Rev. C B D E F

© 2011 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, IC S, 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 Corporate Headquarters Integrated Device Technology, Inc. www.idt.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 For Tech Support www.idt.com/go/clockhelp pcclockhelp@idt.com Innovate with IDT and accelerate your future networks. Contact: www.IDT.com ICS91730 LOW EMI, SPREAD MODULATING, CLOCK GENERATOR SYNTHESIZERS

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