CD74ACT297 Datasheet (Texas Instruments) - DIGITAL PHASE-LOCKED LOOP

CD74ACT297, DIGITAL PHASE-LOCKED LOOP

ordering information The CD74ACT297 provides a simple, cost-effective solution to high-accuracy, digital, phase-locked-loop applications.

This device contains all the necessary circuits, with the exception of the divide-by-N counter, to build first-order phase-locked loops as shown in Figure 1.

Both

CD74ACT297 DIGITAL PHASE-LOCKED LOOP D Speed of Bipolar FCT, AS, and S, With Significantly Reduced Power Consumption D Digital Design Avoids Analog Compensation Errors D Easily Cascadable for Higher-Order Loops D Useful Frequency Range DC to 110 MHz Typical (K CLK) DC to 70 MHz Typical (I/D CLK) D Dynamically Variable Bandwidth D Very Narrow Bandwidth Attainable D Power-On Reset D Output Capability Standard: XORPD OUT, ECPD OUT Bus Driver: I/D OUT D SCR L