DS1073M-100

Overview

The DS1073M-100 is a fixed-frequency oscillator and divider from Analog Devices Inc./Maxim Integrated, designed for 3V applications. It features dual outputs (I/O and OUT0) with a maximum frequency of 100MHz. The device incorporates user-programmable on-chip dividers (1 to 513) and prescalers (1, 2, 4), stored in non-volatile memory. It supports internal, external clock, or crystal references. Operating voltage ranges from 2.7V to 3.6V. Key specifications include ±0.5% initial tolerance, ±1% variation over commercial temperature/voltage, and synchronous output gating. Supply current is typically 40mA at 15pF load.

Feature Summary

• Dual fixed-frequency outputs up to 100MHz with no external components required
• User-programmable on-chip dividers (1-513) and prescaler (1, 2, 4)
• Supports internal clock, external clock, or crystal reference options
• Synchronous output gating prevents truncated pulses during enable/disable

Applications

• Clock generation for microprocessors and digital systems
• Timing reference for communication equipment
• Battery-operated systems requiring low power consumption

Procurement Notes

Verify the specific suffix 'M' indicates the 300-mil DIP package variant. Confirm programming requirements; devices are shipped configured for half the maximum operating frequency unless factory-programmed otherwise. Ensure supply voltage remains within 2.7V to 3.6V for specified performance. Check temperature range compliance (commercial vs industrial) against application needs.

Selection Notes

Select the DS1073M-100 when a fixed 100MHz output is required without external crystals or resonators. Consider the MUX and DIV register configurations for frequency scaling if lower frequencies are needed. Evaluate the PDN/SELX pin functionality based on whether power-down or source selection switching is required. Compare supply current and jitter specifications against system timing constraints.

Part Context

The DS1073 series includes variants like DS1073M/Z-80 (80MHz), DS1073M/Z-66 (66.667MHz), and DS1073M/Z-60 (60MHz). The 'M' suffix denotes the 300-mil DIP package, while 'Z' denotes the 150-mil SOIC package. All variants share the same functional architecture and programming interface.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should verify pin compatibility and electrical specifications if considering alternative oscillators.

FAQ

How is the device programmed?

Programming is performed via a 1-Wire protocol using the I/O pin. A pullup resistor must be connected to VCC before power-up to enter programming mode.

What is the function of the OUT0 pin?

OUT0 provides a buffered output of the master reference clock (internal or external). It is unaffected by the OE pin but is disabled during power-down if EN0 bit is set.

Can the device switch between internal and external clocks dynamically?

Yes, if the PDN bit is programmed to 0, the PDN/SELX pin can be used to switch between the internal oscillator and an external reference/crystal on the fly.