DS1087LU-2CL+T Maxim Integrated Products, DS1087LU-2CL+T Datasheet

IC ECONOSCILLATOR SS 3.6V 8-MSOP

DS1087LU-2CL+T

Manufacturer Part Number
DS1087LU-2CL+T
Description
IC ECONOSCILLATOR SS 3.6V 8-MSOP
Manufacturer
Maxim Integrated Products
Series
EconOscillator™r
Type
Clock Generatorr
Datasheet

Specifications of DS1087LU-2CL+T

Pll
No
Input
Clock
Output
Clock
Number Of Circuits
1
Ratio - Input:output
2:1
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 DS1087L is a clock generator that produces a
spread-spectrum (dithered) square-wave output of fre-
quencies from 130kHz to 66.6MHz. The DS1087L is
shipped from the factory programmed at a specific fre-
quency and spread-spectrum percentage. The user still
has access to an internal frequency divider, selectable
2% or 4% dithered output, and programmable output
power-down/disable mode through a 2-wire program-
ming interface. All the device settings are stored in non-
volatile (NV) EEPROM allowing it to operate in
stand-alone applications. The DS1087L has power-
down and output-enable control pins for power-sensi-
tive applications.
Rev 1; 11/03
Custom frequencies and over 20 standard frequencies avail-
able, contact factory.
EconOscillator is a trademark of Dallas Semiconductor.
Typical Operating Circuits appear at end of data sheet.
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.
DS1087LU-202
DS1087LU-402
DS1087LU-210
DS1087LU-216
DS1087LU-266
DS1087LU-466
DS1087LU-yxx
PART
Printers
Copiers
PCs
Computer Peripherals
Cell Phones
Cable Modems
Standard Frequency Options
FREQUENCY (MHz)
Fixed up to 66.6
2.0480
2.0480
General Description
10.0
16.6
66.6
66.6
3.3V Spread-Spectrum EconOscillator
Applications
______________________________________________ Maxim Integrated Products
SPREAD (%)
2 or 4
2
4
2
2
2
4
♦ Factory Programmed Square-Wave Generator
♦ No External Timing Components Required
♦ EMI Reduction
♦ 2.7V to 3.6V Supply
♦ User Programmable Down to 130kHz with Divider
♦ 2% or 4% Selectable Dithered Output
♦ Glitchless Output-Enable Control
♦ 2-Wire Serial Interface
♦ Nonvolatile Settings
♦ Power-Down Mode
♦ Programmable Output Power-Down/Disable Mode
DS1087LU-yxx
from 130kHz to 66.6MHz
(Dependent on Master Oscillator Frequency)
TOP VIEW
PART
SPRD
GND
OUT
V
CC
1
2
4
3
-40°C to +85°C
Ordering Information
TEMP RANGE
µSOP (118 mils)
DS1087L
Pin Configuration
6
8
7
5
PIN-PACKAGE
8 µSOP (118 mils)
SCL
SDA
PDN
OE
Features
1

Related parts for DS1087LU-2CL+T

DS1087LU-2CL+T Summary of contents

Page 1

... DS1087LU-402 2.0480 DS1087LU-210 10.0 DS1087LU-216 16.6 DS1087LU-266 66.6 DS1087LU-466 66.6 DS1087LU-yxx Fixed up to 66.6 Custom frequencies and over 20 standard frequencies avail- able, contact factory. EconOscillator is a trademark of Dallas Semiconductor. Typical Operating Circuits appear at end of data sheet. For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’ ...

Page 2

Spread-Spectrum EconOscillator ABSOLUTE MAXIMUM RATINGS Voltage Range on V Relative to Ground ..........-0.5V to +6.0V CC Voltage Range on SPRD, PDN, OE, SDA, SCL Relative to Ground* ................................-0. Operating Temperature Range ...........................-40°C to +85°C *This voltage must ...

Page 3

Spread-Spectrum EconOscillator MASTER OSCILLATOR CHARACTERISTICS (V = 2.7V to 3.6V -40°C to +85°C PARAMETER SYMBOL Master Oscillator Range Available Master Oscillator Frequency Tolerance Voltage Frequency Variation Temperature Frequency Variation Temperature Frequency Variation Dither Frequency Range ...

Page 4

Spread-Spectrum EconOscillator AC ELECTRICAL CHARACTERISTICS—2-WIRE INTERFACE (V = 2.7V to 3.6V 0°C to +70°C PARAMETER SYMBOL SCL Clock Frequency Bus Free Time Between a STOP and START Condition Hold Time (repeated) START t HD:STA Condition ...

Page 5

Spread-Spectrum EconOscillator Note 1: All voltages are referenced to ground. Note 2: This is the absolute accuracy of the master oscillator frequency at the default settings. Note 3: This is the change that is observed in master oscillator frequency ...

Page 6

Spread-Spectrum EconOscillator (V = 3.3V +25°C, unless otherwise noted SUPPLY CURRENT vs. PRESCALER 3.3V CC OUPUT UNLOADED -40°C, +25°C, +85° 100 PRESCALER (DECIMAL) FREQUENCY ...

Page 7

Spread-Spectrum EconOscillator PIN NAME 1 OUT Oscillator Output 2 SPRD Dither Enable. When the pin is high, the dither is enabled. When the pin is low, the dither is disabled Power Supply CC 4 GND Ground Output ...

Page 8

Spread-Spectrum EconOscillator Table 1. Register Summary REGISTER ADDR PRESCALER 02h ADDR 0Dh WRITE EE 3Fh X = Don’t care; read as one. 1 Detailed Description A block diagram of the DS1087L ...

Page 9

Spread-Spectrum EconOscillator Bits Prescaler Divider. The prescaler bits (bits P3 to P0) divide the master oscillator x frequency by 2 where x can be from Any prescaler bit value entered that is greater ...

Page 10

Spread-Spectrum EconOscillator MSB DEVICE DEVICE IDENTIFIER ADDRESS Figure 4. Slave Address Data valid: The state of the data line represents valid data when, after a START condition, the data line is stable for the ...

Page 11

Spread-Spectrum EconOscillator SDA t BUF t LOW SCL t HD:STA STOP START Figure 5. 2-Wire AC Characteristics TYPICAL 2-WIRE WRITE TRANSACTION MSB START A2* A1* A0* DEVICE DEVICE IDENTIFIER ADDRESS EXAMPLE 2-WIRE TRANSACTIONS (WHEN A0, ...

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 © 2003 Maxim Integrated Products ...

Related keywords