DS1077U-100+W

Overview

The DS1077U-100+W is a dual-output, programmable fixed-frequency oscillator in an 8-pin µSOP package. It operates on a single 5V supply (4.75V to 5.25V) with active current up to 50mA and standby current of 5µA. The device generates two synchronous outputs ranging from 8.1kHz to 133MHz, derived from a factory-trimmed master oscillator. Frequency settings are stored in nonvolatile EEPROM memory, allowing for processor-controlled or standalone operation via a 2-wire serial interface.

Feature Summary

• Dual low-jitter synchronous outputs with frequencies from 8.1kHz to 133MHz
• Nonvolatile EEPROM storage for frequency settings and control registers
• 2-wire serial interface for on-the-fly programming of prescalers and dividers
• Single 5V supply operation with power-down mode reducing current to 5µA

Applications

• Processor-controlled frequency synthesizers
• Standalone clock generation for digital systems
• Telecommunications equipment requiring precise timing references
• Embedded systems needing minimal external component count

Procurement Notes

Verify the ordering suffix 'W' against official Analog Devices documentation to confirm specific tape-and-reel packaging or environmental compliance status, as datasheet standard listings may not explicitly detail this suffix variation. Ensure compatibility with 2-wire bus voltage levels and pull-up resistor requirements for the target application environment.

Selection Notes

Select the DS1077U variant for space-constrained designs requiring the 118mil µSOP package instead of the standard SO package. Choose the -100 frequency option if the design requires a master frequency near 100MHz; other options like -66 or -133 provide different base frequencies. Consider the ±0.5% initial tolerance and temperature stability when designing for high-precision timing applications.

Part Context

The DS1077 belongs to the EconOscillator family, designed to replace discrete crystal oscillators and divider circuits. The U suffix denotes the 8-pin 118mil µSOP package, while the + indicates lead-free/RoHS compliance. This component integrates the oscillator, prescalers, and divider into a single chip, simplifying PCB layout and reducing bill-of-materials complexity.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.