MC14046BFG

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC14046BFG is a Phase Locked Loop (PLL) integrated circuit manufactured by onsemi, housed in a 16-lead SOIC-WB surface-mount package. It integrates two phase comparators, a voltage-controlled oscillator (VCO), a source follower, and a zener diode. The device operates within a supply voltage range of 3.0 V to 18.0 V and supports an operating temperature range from -55°C to +125°C. Key electrical characteristics include a maximum VCO frequency of 1.9 MHz at 15 V and a quiescent current of up to 600 µA at 15 V. The component is lead-free, RoHS compliant, and designed for compatibility with low-power TTL logic levels.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates Phase Comparator 1 (Exclusive OR gate) and Phase Comparator 2 (leading edge sensing logic).
• Includes a linear Voltage-Controlled Oscillator (VCO) and a high-impedance Source Follower output.
• Features internal Zener diode for power supply regulation assistance.
• Provides diode protection on all inputs and buffered outputs compatible with Low-Power TTL.

Clock Generators, PLLs, Frequency Synthesizers Applications

• FM and FSK modulation and demodulation circuits.
• Frequency synthesis and multiplication systems.
• Tone decoding and data synchronization conditioning.
• Voltage-to-frequency conversion and motor speed control.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'FG' against the manufacturer's official documentation to confirm package type and automotive qualification status. The provided datasheet lists standard variants such as BDWG and BDWR2G; ensure the requested part number matches available inventory specifications before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a single-chip PLL solution with dual comparator options is required. Ensure external passive components for the VCO (R1, R2, C1) are rated for the target frequency range. Verify that the input signal duty cycle requirements align with the selected phase comparator mode.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device belongs to the MC14046B family of CMOS Phase Locked Loops. It serves as a pin-for-pin replacement for the CD4046B. The 'NLV' prefix indicates AEC-Q100 qualification and PPAP capability for automotive applications, though specific suffix verification is required for the FG variant.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The MC14046B is documented as a pin-for-pin replacement for the CD4046B. Other variants within the same package family, such as MC14046BDWG or MC14046BDWR2G, offer identical functionality with different shipping configurations.