BU2374FV-E2

Overview

The BU2374FV-E2 is a video accessory integrated circuit manufactured by Rohm Semiconductor, designed for high-performance voltage-controlled oscillator (VCO) applications in image sampling systems. It integrates a VCO and a rising-edge trigger phase comparator to facilitate Phase-Locked Loop (PLL) configuration via external low-pass filters and frequency dividers. The device operates at a supply voltage of 3.3V with an oscillation range of 37MHz to 60MHz. It features independent power-down modes for the VCO and phase comparator, selectable output frequency division (1/2 or 1/4), and midpoint frequency setting through external resistance.

Feature Summary

• Built-in rising-edge trigger phase comparator and VCO for PLL system implementation
• Independent power-down mode settings for VCO and phase comparator blocks
• Selectable VCO output frequency division via SELECT pin (1/2 or 1/4)
• Midpoint frequency setting capability within the oscillation range using external resistance

Applications

• CRT monitors
• LCD monitors
• CD-RW drives

Procurement Notes

Verify component authenticity and physical condition upon receipt. Confirm that the package matches the specified SSOP-B14 form factor. Check for any signs of mechanical damage or contamination on the pins before integration into the design.

Selection Notes

Select this model when a 3.3V supply is required with a target frequency range of 37MHz to 60MHz. Ensure the application requires a 1/4 frequency division option, which distinguishes it from the BU2373FV variant. Verify that the external bias resistor can be selected within the 2.0kΩ to 3.0kΩ range to meet specific sensitivity requirements.

Part Context

This component belongs to the BU2373FV and BU2374FV general-purpose VCO series. Both models share similar internal architectures but differ in supply voltage compatibility and frequency division ratios. The BU2374FV specifically supports 3.3V operation and offers a 1/4 division mode, whereas the BU2373FV supports 3.0V/5.0V and a 1/2 division mode.

Replacement Considerations

The BU2373FV is a related part within the same family but differs in electrical specifications. Substitution requires verifying that the target frequency range and division ratio (1/2 vs 1/4) align with the new design requirements.