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.
Features
♦
Factory Programmed Square-Wave Generator
from 130kHz to 66.6MHz
♦
No External Timing Components Required
♦
EMI Reduction
♦
2.7V to 3.6V Supply
♦
User Programmable Down to 130kHz with Divider
(Dependent on Master Oscillator Frequency)
♦
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
DS1087L
Applications
Printers
Copiers
PCs
Computer Peripherals
Cell Phones
Cable Modems
Ordering Information
PART
DS1087LU-yxx
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
8 µSOP (118 mils)
Standard Frequency Options
PART
DS1087LU-202
DS1087LU-402
DS1087LU-210
DS1087LU-216
DS1087LU-266
DS1087LU-466
DS1087LU-yxx
FREQUENCY (MHz)
2.0480
2.0480
10.0
16.6
66.6
66.6
Fixed up to 66.6
SPREAD (%)
2
4
2
2
2
4
2 or 4
SPRD
V
CC
2
OUT
1
Pin Configuration
TOP VIEW
8
7
SCL
SDA
PDN
OE
DS1087L
3
6
5
GND
4
Custom frequencies and over 20 standard frequencies avail-
able, contact factory.
µSOP
(118 mils)
EconOscillator is a trademark of Dallas Semiconductor.
Typical Operating Circuits appear at end of data sheet.
______________________________________________
Maxim Integrated Products
1
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.
3.3V Spread-Spectrum EconOscillator
DS1087L
ABSOLUTE MAXIMUM RATINGS
Voltage Range on V
CC
Relative to Ground ..........-0.5V to +6.0V
Voltage Range on SPRD,
PDN,
OE, SDA, SCL
Relative to Ground* ................................-0.5V to (V
CC
+ 0.5V)
Operating Temperature Range ...........................-40°C to +85°C
*This
voltage must not exceed 6.0V.
Programming Temperature Range .........................0°C to +70°C
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature ..................See IPC/JEDEC J-STD-020A
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Professor Zheng Qiang of Zhejiang University's speech: I don't teach in a muddled way, and you shouldn't learn in a muddled way either
Professor Zheng Qiang's words are worth pondering. Will China exp...
The P6.0 IO port of 430 is the 0th channel of AD conversion. If no circuit device is connected, what is the analog voltage of this IO port? Is it 0? I wrote a code for single-channel multiple conversi...
Is the LTE Cat 1 module like the GPRS module, which can be used by simply inserting a common SIM card? Or does it require the cooperation of the operator to activate it like the NB-IOT module?...
[align=center] [b]Latest 08 version of PM4040FL partial upgrade switching power supply application data[/b][/align] [[i] This post was last edited by yuandayuan6999 on 2010-6-1 18:35[/i]]...
A few days ago, I conducted a survey on the creative market ( https://bbs.eeworld.com.cn/thread-106255-4-1.html ), and bkkman's suggestion was: popularize the basic knowledge of the Internet of Things...
[i=s] This post was last edited by zhumj116 on 2016-3-8 22:23 [/i] [color=#444444][font=微软雅黑, arial][size=16px] I worked in Datang Telecom for more than 5 years in FPGA design, and then continued to w...
According to foreign media reports, Ford Motor has applied to the U.S. Patent and Social Security Administration (USPTO) for a patent for a remote vehicle control system that may be used in future ...[Details]
Is electromagnetic radiation from electric vehicles harmful to the human body? Recently, the issue of electromagnetic radiation from electric vehicles has garnered widespread attention. However, pu...[Details]
With the rapid adoption of smart electric vehicles, automotive chips are evolving from auxiliary control units to the foundation of the entire vehicle's intelligence. Their applications extend from...[Details]
On August 18th, Galaxis, a specialist in integrated intelligent intralogistics robotics, officially unveiled its next-generation, ultra-narrow aisle forklift mobile robot, the "VFR Ultra-Narrow Ser...[Details]
A half-bridge is an inverter topology for converting DC to AC. A typical half-bridge circuit consists of two controller switches, a three-wire DC power supply, two feedback diodes, and two capacito...[Details]
In the electronics manufacturing industry, surface mount technology (SMT) placement machines are core equipment for production lines. However, with many different models available on the market, ch...[Details]
Preface
Low-voltage motors are widely used in nonferrous metallurgical plants. Their abnormal operation not only impacts normal production but can also threaten human life. Therefore, providin...[Details]
Shenzhen Baowei Power Supply high frequency pure sine wave power, communication inverter power supply has two communication interfaces, RS232 and R485 interfaces, their functions and characteristic...[Details]
When American cartoonist Chester Gould sketched the watch on Dick Tracy's wrist, he had no idea that science fiction would become reality 70 years later. As a comic strip artist, Gould imagined fut...[Details]
With the prevalence of online conferencing, live streaming, and voice communication in gaming, high-quality audio input devices are becoming increasingly important. To this end, XMOS, an expert in ...[Details]
introduction
The widespread use of air conditioner communication circuits began with the rise of household inverter air conditioners. With China's energy conservation and emission reduction in...[Details]
0 Introduction
DVI (Digital Visual Interface) is a hot topic in current digital display research and application. Video processing technologies for DVI output not only address issues such as h...[Details]
Since the beginning of the 21st century, with the rapid development of my country's urban and rural economies and the improvement of people's living standards, more and more people have begun to ow...[Details]
As the power density of modern electronic systems continues to increase, effective thermal management has become critical to ensuring system performance, reliability, and longevity—especially in hi...[Details]
Introduction: Traditionally, lead-acid batteries have primarily been used to provide backup power and power regulation based on location. In typical applications, the battery's actual use (discharg...[Details]
Talking
京公网安备 11010802033920号
EEWORLD
