DS1090U-1/T datasheet, PDF - EEWORLD Datasheet

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DS1090U-1/T: DescriptionClock Generator, 8MHz, CMOS, PDSO8, MICRO, SOP-8; CategoryThe embedded processor and controller Microcontrollers and processors; File Size993KB，8 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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DS1090U-1/T Overview

Clock Generator, 8MHz, CMOS, PDSO8, MICRO, SOP-8

DS1090U-1/T Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	Maxim
Parts packaging code	SOIC
package instruction	TSSOP,
Contacts	8
Reach Compliance Code	not_compliant
ECCN code	EAR99
JESD-30 code	S-PDSO-G8
JESD-609 code	e0
length	3 mm
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output clock frequency	8 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Package shape	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Master clock/crystal nominal frequency	8 MHz
Certification status	Not Qualified
Maximum seat height	1.1 mm
Maximum supply voltage	5.5 V
Minimum supply voltage	3 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER
Base Number Matches	1

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Rev 0; 4/04

Low-Frequency, Spread-Spectrum

EconOscillator

General Description

The DS1090 is a low-cost, dithered oscillator intended

to be used as an external clock for switched-mode

power supplies and other low-frequency applications.

The dithering or sweeping function reduces peak-radi-

ated emissions from the power supply at its fundamen-

tal frequency, as well as harmonic frequencies. The

device consists of a resistor-programmed master oscil-

lator, factory-programmed clock prescaler, and a pin-

programmed dither circuit. These features allow the

DS1090 to be used in applications where a spread-

spectrum clock is desired to reduce radiated emis-

sions. A combination of factory-set prescalers and

external resistor allows for output frequencies ranging

from 125kHz to 8MHz. Both dither frequency and dither

percentage are set using control pins.

Features

♦

Low-Cost, Spread-Spectrum EconOscillator™

♦

Simple User Programming

♦

Output Frequency Programmable from 125kHz

to 8MHz

♦

Dither Percentage Programmable from 0% to 8%

♦

Dither Rate Programmable (f

MOSC

/ 512, 1024,

2048, or 4096 )

♦

3.0V to 5.5V Single-Supply Operation

♦

CMOS/TTL-Compatible Output

♦

Operating Temperature Range: -40°C to +85°C

DS1090

Ordering Information

PART

OUTPUT

FREQUENCY

RANGE

4MHz to 8MHz

2MHz to 4MHz

1MHz to 2MHz

500kHz to 1MHz

250kHz to

500kHz

125kHz to

250kHz

PRESCALER

PIN-

PACKAGE

8 µSOP

Applications

Switched-Mode Power Supplies

Servers

Printers

Embedded Microcontrollers

Industrial Controls

Automotive Applications

DS1090U-1

DS1090U-2*

DS1090U-4*

DS1090U-8*

DS1090U-16

DS1090U-32*

Add “/T” for Tape & Reel orders.

*Contact

factory for availability.

Typical Operating Circuit

OUT

Pin Configuration

TOP VIEW

DC-DC

STEP-DOWN

CONVERTER

OUT

JC0

OUT 1

SET

JC1

JC0

DS1090

GND 4

DS1090

JC1

SET

45kΩ

TO 91kΩ

GND

µSOP

EconOscillator is a trademark of Dallas Semiconductor.

______________________________________________

Maxim Integrated Products

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.

DS1090U-1/T Related Products

	DS1090U-1/T	DS1090U-4/T	DS1090U-16/T	1571542-3	DS1090U-32/T	DS1090U-8/T
Description	Clock Generator, 8MHz, CMOS, PDSO8, MICRO, SOP-8	Clock Generator, 2MHz, CMOS, PDSO8, MICRO, SOP-8	Clock Generator, 0.5MHz, CMOS, PDSO8, MICRO, SOP-8	THIS DRAWING IS A CONTROLLED DOCUMENT.	Clock Generator, 0.25MHz, CMOS, PDSO8, MICRO, SOP-8	Clock Generator, 1MHz, CMOS, PDSO8, MICRO, SOP-8
Is it lead-free?	Contains lead	Contains lead	Contains lead	-	Contains lead	Contains lead
Is it Rohs certified?	incompatible	incompatible	incompatible	-	incompatible	incompatible
Maker	Maxim	Maxim	Maxim	-	Maxim	Maxim
Parts packaging code	SOIC	SOIC	SOIC	-	SOIC	SOIC
package instruction	TSSOP,	TSSOP,	TSSOP,	-	TSSOP,	TSSOP,
Contacts	8	8	8	-	8	8
Reach Compliance Code	not_compliant	not_compliant	not_compliant	-	not_compliant	not_compliant
ECCN code	EAR99	EAR99	EAR99	-	EAR99	EAR99
JESD-30 code	S-PDSO-G8	S-PDSO-G8	S-PDSO-G8	-	S-PDSO-G8	S-PDSO-G8
JESD-609 code	e0	e0	e0	-	e0	e0
length	3 mm	3 mm	3 mm	-	3 mm	3 mm
Number of terminals	8	8	8	-	8	8
Maximum operating temperature	85 °C	85 °C	85 °C	-	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-	-40 °C	-40 °C
Maximum output clock frequency	8 MHz	2 MHz	0.5 MHz	-	0.25 MHz	1 MHz
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSSOP	TSSOP	TSSOP	-	TSSOP	TSSOP
Package shape	SQUARE	SQUARE	SQUARE	-	SQUARE	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	-	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	-	NOT SPECIFIED	NOT SPECIFIED
Master clock/crystal nominal frequency	8 MHz	8 MHz	8 MHz	-	8 MHz	8 MHz
Certification status	Not Qualified	Not Qualified	Not Qualified	-	Not Qualified	Not Qualified
Maximum seat height	1.1 mm	1.1 mm	1.1 mm	-	1.1 mm	1.1 mm
Maximum supply voltage	5.5 V	5.5 V	5.5 V	-	5.5 V	5.5 V
Minimum supply voltage	3 V	3 V	3 V	-	3 V	3 V
Nominal supply voltage	3.3 V	3.3 V	3.3 V	-	3.3 V	3.3 V
surface mount	YES	YES	YES	-	YES	YES
technology	CMOS	CMOS	CMOS	-	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	-	INDUSTRIAL	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	GULL WING	GULL WING	GULL WING	-	GULL WING	GULL WING
Terminal pitch	0.5 mm	0.5 mm	0.5 mm	-	0.5 mm	0.5 mm
Terminal location	DUAL	DUAL	DUAL	-	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	-	NOT SPECIFIED	NOT SPECIFIED
width	3 mm	3 mm	3 mm	-	3 mm	3 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	-	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER

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