MC12026ADG

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC12026ADG is a high-frequency, low-voltage dual modulus prescaler from onsemi, designed for phase-locked loop (PLL) applications. It operates with a supply voltage of 4.5 to 5.5 V and supports toggle frequencies up to 1.1 GHz. The device features a typical supply current of 4.0 mA and an operating temperature range of -40°C to 85°C. It offers programmable divide ratios of 8/9 or 16/17 via Divide Ratio Control (SW) and Modulus Control (MC) inputs. The component is housed in an SOIC-8 package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Toggle frequency up to 1.1 GHz
• Dual modulus division ratios: 8/9 or 16/17
• Low power consumption: 4.0 mA typical at 5.0 V
• Modulus control input compatible with standard CMOS and TTL levels

Clock Generators, PLLs, Frequency Synthesizers Applications

• Phase-locked loop (PLL) synthesizers
• CMOS synthesizers requiring positive edges to trigger internal counters
• Programmable frequency step generation up to 1.1 GHz

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'DG' against the manufacturer's current documentation. The datasheet indicates that the MC12026ADG variant is discontinued and not recommended for new designs. Confirm availability through authorized distributors or contact onsemi representatives for alternative sourcing options.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component for PLL circuits requiring positive edge triggering. Ensure the design accommodates the 4.5 V to 5.5 V supply range. Verify that the required divide ratio (8/9 or 16/17) matches the application needs controlled by SW and MC pins. Consider the 6.0 ns typical setup time for timing constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The MC12026A is part of the ECL series of prescalers. It is pin-compatible with the MC12022. The 'A' designation indicates it is optimized for CMOS synthesizers requiring positive edges, distinguishing it from variants like the MC12026B which may require negative edges.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The MC12026ADG is listed as discontinued. Consult onsemi for current alternatives. The MC12026ADR2G is another variant of the same device family but also subject to discontinuation status.