DS1073Z-80

Overview

The DS1073Z-80 is a fixed-frequency oscillator and divider from the DS1073 series, manufactured by Analog Devices / Maxim Integrated. It generates an 80 MHz output signal without requiring external components. The device operates on a 2.7V to 3.6V supply and features user-programmable on-chip dividers (1 to 513) and prescalers (1, 2, 4). Configuration data is stored in non-volatile memory via a 1-Wire interface. Key electrical parameters include a 0.5% initial frequency tolerance, 1% variation over commercial temperature and voltage ranges, and a maximum jitter of 100 ps.

Feature Summary

• Dual fixed-frequency outputs with internal master oscillator
• User-programmable on-chip dividers (1 to 513) and prescaler (1, 2, 4)
• No external components required for operation
• 0.5% initial tolerance and 1% variation over commercial temp/voltage
• Internal clock, external clock, or crystal reference options

Applications

• Clock generation for digital systems
• Timing reference for microprocessors and FPGAs
• Embedded system clock sources

Procurement Notes

Verify component authenticity through authorized distributors. Confirm package type matches design requirements. Check for obsolescence status as availability may be limited. Ensure programming tools are compatible with the 1-Wire protocol before integration.

Selection Notes

Select based on required output frequency and operating temperature range. Commercial grade covers 0°C to 70°C; industrial grade covers -40°C to +85°C. Verify supply voltage compatibility within the 2.7V to 3.6V range. Consider power-down mode requirements for energy efficiency.

Part Context

The DS1073Z-80 belongs to the DS1073 family of EconOscillators. Other variants include DS1073M/Z-100 (100 MHz), DS1073M/Z-66 (66.667 MHz), and DS1073M/Z-60 (60 MHz). The 'Z' suffix indicates an SOIC package, while 'M' indicates a DIP package.

Replacement Considerations

Direct substitutes within the same family include DS1073Z-100, DS1073Z-66, and DS1073Z-60 if different frequencies are acceptable. Cross-family replacements require verification of pinout, voltage, and timing specifications.

FAQ

How is the DS1073Z-80 programmed?

It is programmed using a 1-Wire interface variant. A pullup resistor on the I/O pin during power-up initiates programming mode, allowing register configuration via a bus master.

What is the function of the PDN/SELX pin?

Its function is determined by the PDN bit in the MUX register. If PDN=1, it acts as a power-down control. If PDN=0, it selects between the internal oscillator and an external/crystal reference.

Can the output duty cycle be adjusted?

The datasheet specifies a typical duty cycle of 40% to 60% for both OUT and OUT0 pins but does not list user-adjustable duty cycle settings.