DS1087LU-W3C

Overview

The DS1087LU-W3C is a programmable spread-spectrum oscillator manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates as a 3.3V EconOscillator designed to reduce electromagnetic interference (EMI) through frequency dithering. The device integrates a voltage-controlled oscillator and control logic within a single package, eliminating the need for external components typically required in traditional PLL-based clock generators. This integration simplifies board layout and reduces component count while maintaining precise clock signal generation capabilities for digital systems.

Feature Summary

• Integrated spread-spectrum modulation to minimize EMI peaks
• Single-chip solution combining VCO and control circuitry
• Operates on a single 3.3V power supply
• Programmable output frequencies via serial interface

Applications

• High-speed data converters requiring low-jitter clocks
• PCI Express and other high-speed serial bus interfaces
• Telecommunications equipment with strict EMI regulations
• Industrial automation systems needing reliable timing sources

Procurement Notes

Verify the specific suffix 'W3C' against official Analog Devices documentation to confirm pinout compatibility and temperature range specifications. Ensure that the ordering information matches the exact package type and lead frame finish required for the target application, as suffix variations may indicate different packaging or environmental ratings.

Selection Notes

Select this component when design constraints require a compact, low-component-count clock source with inherent EMI reduction features. Compare the available output frequencies and load capacitance requirements against the system's clock input specifications. Consider the operating temperature range and power consumption characteristics relative to the overall system thermal budget and performance needs.

Part Context

This part belongs to the DS1087LU family of spread-spectrum oscillators. These devices are engineered to replace discrete crystal oscillator and PLL combinations. The 'LU' designation typically indicates a specific package style and operational voltage range within the broader product line, offering a cost-effective alternative to complex frequency synthesis architectures.

Replacement Considerations

Direct replacements must match the 3.3V operation, spread-spectrum functionality, and package dimensions. Verify pin-to-pin compatibility with existing designs. Alternative parts from the same manufacturer with similar frequency ranges and modulation profiles should be evaluated for electrical parameter equivalence.