DS1089LU-A29+T Maxim Integrated Products, DS1089LU-A29+T Datasheet

IC ECONOSCILL 3.3V SS 8-USOP

DS1089LU-A29+T

Manufacturer Part Number
DS1089LU-A29+T
Description
IC ECONOSCILL 3.3V SS 8-USOP
Manufacturer
Maxim Integrated Products
Series
EconOscillator™r
Type
Clock Generatorr
Datasheet

Specifications of DS1089LU-A29+T

Pll
No
Input
Clock
Output
Clock
Number Of Circuits
1
Ratio - Input:output
1:1
Differential - Input:output
No/No
Divider/multiplier
Yes/No
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency-max
-
The DS1089L is a clock generator that produces a
spread spectrum (dithered) square-wave output of fre-
quencies from 130kHz to 66.6MHz. The DS1089L is
shipped from the factory programmed at a specific fre-
quency. The DS1089L is pin-for-pin compatible with the
DS1087L, however, the DS1089L dithers at equal per-
centages above and below the center frequency. The
user still has access to the internal frequency divider,
selectable ±1%, ±2%, ±4%, or ±8% dithered output,
dithering rate, and programmable output power-
down/disable mode through an I
gramming interface. All the device settings are stored
in nonvolatile (NV) EEPROM allowing it to operate in
stand-alone applications. The DS1089L also has
power-down and output-enable control pins for power-
sensitive applications.
Rev 2; 5/06
Pin Configuration and Typical Operating Circuits appear at end of data sheet.
Add “/T” for Tape and Reel.
Custom frequencies available, contact factory.
EconOscillator is a trademark of Dallas Semiconductor Corp.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
DS1089LU-21G
DS1089LU-4CL
DS1089LU-22F
DS1089LU-23C
DS1089LU-450
DS1089LU-866
DS1089LU-yxx
3.3V Center Spread-Spectrum EconOscillator™
Automotive Infotainment
Printers
Copiers
Computer Peripherals
POS Terminals
Cable Modems
PART
General Description
FREQUENCY (MHz)
Fixed up to 66.6
14.7456
2
18.432
24.576
Applications
C-compatible pro-
33.3
50.0
66.6
______________________________________________ Maxim Integrated Products
SPREAD (±%)
♦ Factory-Programmed Square-Wave Generator
♦ Center Frequency Remains Constant Independent
♦ No External Timing Components Required
♦ EMI Reduction
♦ Variable Dither Frequency
♦ User Programmable Down to 130kHz with Divider
♦ ±1%, ±2%, ±4%, or ±8% Selectable Dithered
♦ Glitchless Output-Enable Control
♦ I
♦ Nonvolatile Settings
♦ Power-Down Mode
♦ Programmable Output Power-Down/Disable Mode
*See Standard Frequency Options Table.
DS1089LU-yxx*
1, 2, 4, or 8
from 33.3MHz to 66.6MHz
of Dither Percentage
(Dependent on Master Oscillator Frequency)
Output
2
C-Compatible Serial Interface
1
2
1
1
2
4
PART
Standard Frequency Options
Ordering Information
-40°C to +85°C
TEMP RANGE
f
MOSC
DITHER FREQUENCY
/ 2048 or 4096 or 8192
f
f
f
f
f
f
MOSC
MOSC
MOSC
MOSC
MOSC
MOSC
/ 4096
/ 4096
/ 2048
/ 4096
/ 4096
/ 4096
PIN-PACKAGE
8 µSOP (118 mil)
Features
1

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DS1089LU-A29+T Summary of contents

Page 1

... PART FREQUENCY (MHz) DS1089LU-21G DS1089LU-4CL DS1089LU-22F DS1089LU-23C DS1089LU-450 DS1089LU-866 DS1089LU-yxx Fixed up to 66.6 Add “/T” for Tape and Reel. Custom frequencies available, contact factory. EconOscillator is a trademark of Dallas Semiconductor Corp. For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’ ...

Page 2

Center Spread-Spectrum EconOscillator™ ABSOLUTE MAXIMUM RATINGS Voltage on V Relative to Ground.......................-0.5V to +6.0V CC PDN, OE, SDA, Voltage on SPRD, SCL Relative to Ground* ........................-0. Operating Temperature Range ...........................-40°C to +85°C *This voltage must not exceed ...

Page 3

Center Spread-Spectrum EconOscillator™ MASTER OSCILLATOR CHARACTERISTICS (V = +2.7V to +3.6V -40°C to +85° PARAMETER SYMBOL Internal Master Oscillator Frequency ∆f Master Oscillator Frequency Tolerance Voltage Frequency Variation Temperature Frequency Variation (Note 4) Dither Frequency ...

Page 4

Center Spread-Spectrum EconOscillator™ AC ELECTRICAL CHARACTERISTICS— +2.7V to +3.6V -40°C to +85°C, unless otherwise noted. Timing referenced PARAMETER SYMBOL SCL Clock Frequency f Bus Free Time Between Stop and t Start ...

Page 5

Center Spread-Spectrum EconOscillator™ 3.3V +25°C, unless otherwise noted ACTIVE SUPPLY CURRENT vs. SUPPLY VOLTAGE +25°C, A 66MHz OUTPUT UNLOADED 50MHz 130kHz 33MHz 2 0 2.7 3.0 3.3 ...

Page 6

Center Spread-Spectrum EconOscillator™ 3.3V +25°C, unless otherwise noted DUTY CYCLE vs. SUPPLY VOLTAGE +25° 66MHz 50MHz 33MHz 130kHz 48 2.7 3.0 3.3 3.6 SUPPLY VOLTAGE ...

Page 7

Center Spread-Spectrum EconOscillator™ PDN OE SDA SERIAL ADDRESS INTERFACE BITS SCL ADDR J3 J2 WRITE EE COMMAND EEPROM WRITE CONTROL EEPROM GND PRESCALER SPRD Detailed Description Master ...

Page 8

Center Spread-Spectrum EconOscillator™ Two user control signals control the output. The output enable pin (OE) gates the output buffer and the power- down pin (PDN) disables the master oscillator and turns off the output for power-sensitive applications. (Note: the ...

Page 9

Center Spread-Spectrum EconOscillator™ When dither is enabled (by selecting a dither frequency setting greater than 0 with SPRD high), the master oscillator frequency is dithered around the center fre- quency by the selected percentage from the pro- grammed f ...

Page 10

Center Spread-Spectrum EconOscillator™ WRITE EE Command The WRITE EE command is useful in closed-loop appli- cations where the registers are frequently written. In applications where the register contents are frequently written, the WC bit should be set to 1 ...

Page 11

Center Spread-Spectrum EconOscillator™ SDA t BUF t LOW SCL t HD:STA STOP START 2 Figure Characteristics 2 TYPICAL I C WRITE TRANSACTION MSB START A2* A1* A0* DEVICE READ/ DEVICE IDENTIFIER ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products is a registered trademark of Dallas Semiconductor Corporation. ...

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