BD3893FV-E2

Overview

The BD3893FV-E2 is a shock sensor signal processing IC designed for HDD, CD, and DVD drives. It detects shocks via external sensors of voltage or electric charge sensitivity types. The device features a built-in 50MΩ resistor for the pre-amplifier and a secondary low-pass filter (LPF) with selectable cut-off frequencies of 2k, 4k, 8k, and 12kHz. It supports flag detection and analog output modes. Operating conditions include a supply voltage range of -3.0V to 5.5V, an operating temperature range of -25°C to +75°C, and a typical current consumption of 1.2mA at VDD=5V.

Feature Summary

• Supports both voltage sensitivity and electric charge sensitivity shock sensors
• Incorporates a high-resistance 50MΩ internal resistor for pre-amplification
• Features a secondary LPF with four selectable cut-off frequencies
• Provides selectable internal reference voltages

Applications

• Hard Disk Drive (HDD) shock protection
• CD drive shock protection
• DVD drive shock protection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and environmental compliance. Confirm that the component meets the required operating temperature range for the target application environment. Check for any end-of-life notices or recommended new design restrictions before finalizing procurement plans.

Selection Notes

Select this IC when designing shock protection circuits for optical or magnetic storage drives requiring compatibility with both voltage and charge-sensitive sensors. Ensure the external circuit allows for the configuration of LPF cut-off frequencies and reference voltage selection. Verify that the power dissipation limits are respected within the specified ambient temperature range.

Part Context

This component belongs to ROHM Semiconductor's line of specialized signal processing integrated circuits for consumer electronics. It is specifically engineered to interface with mechanical shock sensors in data storage devices, providing necessary signal conditioning and filtering to trigger protective mechanisms effectively.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's datasheet or authorized distributors for potential cross-reference options if this specific model is unavailable.