LTC1067IGN#PBF

Overview

The LTC1067IGN#PBF is a dual, rail-to-rail, very low noise universal switched-capacitor filter building block manufactured by Analog Devices Inc. It integrates two identical second-order sections within a 16-lead SSOP package. The device operates from a single supply ranging from 3V to 5V or a dual supply of ±5V. Each section allows for the realization of bandpass, highpass, lowpass, notch, and allpass functions using external resistors. The center frequency is tuned by an external clock with a nominal ratio of 100:1. Key electrical parameters include a center frequency range of 0.001 to 20 kHz, a typical power supply current of 4.5 mA at 4.75V, and a dynamic range exceeding 80 dB on a single 3.3V supply.

Feature Summary

• Dual second-order switched-capacitor building blocks providing versatile filter topologies
• Rail-to-rail input and output operation compatible with single or dual supplies
• Double sampled architecture that places aliasing and imaging components at twice the clock frequency
• High precision center frequency tuning with minimal temperature coefficient

Applications

• Notch filters for interference rejection
• Narrowband bandpass filters for signal selection
• Tone detection systems
• Noise reduction circuits

Procurement Notes

Verify the specific suffix IGN#PBF against the manufacturer's official documentation to confirm the industrial temperature grade and lead-free packaging status. Ensure the ordering information matches the exact part number required for the design specifications. Cross-reference the datasheet revision history for any updates to electrical characteristics or pin configurations before finalizing procurement.

Selection Notes

Select this component when designing active filters requiring dual sections in a compact surface-mount package. The 100:1 clock-to-center frequency ratio suits applications where moderate clock frequencies are available. Consider the LTC1067-50 variant if lower power consumption is a priority, as it consumes approximately half the current of the standard LTC1067 while maintaining similar performance characteristics.

Part Context

This component belongs to the LTC1067 family of universal switched-capacitor filters. It shares architectural similarities with other devices in the series but is distinguished by its specific clock ratio and package configuration. The device is designed to simplify the implementation of complex filter responses by integrating the necessary analog building blocks into a single integrated circuit.

Replacement Considerations

Publicly confirmed substitute part numbers are not identified in the provided source material.