LTC1067-50CS#TRPBF

Overview

The LTC1067-50CS#TRPBF is a dual switched-capacitor filter building block in a 16-lead SO package. It contains two identical second-order sections with rail-to-rail input and output operation. The device operates from a single 2.7V to 11V supply or dual supplies up to ±5.5V. The internal clock-to-center frequency ratio is fixed at 50:1, allowing center frequencies from 0.001kHz to 40kHz. Typical supply current is 1.45mA at 4.75V. Key electrical parameters include a DC open-loop gain of 90dB, a gain-bandwidth product of 1.9MHz, and a slew rate of 0.8V/ms.

Feature Summary

• Dual second-order switched-capacitor architecture providing independent filter sections
• Rail-to-rail input and output capability for maximum dynamic range
• Fixed 50:1 internal clock-to-center frequency ratio for simplified design
• Low power consumption suitable for battery-operated applications

Applications

• Notch filters for interference rejection
• Narrowband bandpass filters for tone detection
• Noise reduction systems requiring precise filtering
• High-order filter cascading using multiple sections

Procurement Notes

Verify the specific suffix CS#TRPBF against official Analog Devices documentation to confirm the SOIC-8 package type and tape-and-reel shipping format. Ensure the component meets the required industrial temperature range specifications before integration into the final design.

Selection Notes

Select this part when a low-power alternative to the standard LTC1067 is required. The 50:1 clock ratio allows for higher center frequencies compared to the 100:1 variant for a given clock speed. Verify that the external clock source can provide the necessary frequency range for the desired application bandwidth.

Part Context

This component belongs to the LTC1067 family of universal switched-capacitor filters. It shares the same core architecture as the LTC1067 but features optimized power consumption and a different clock ratio. The family is designed for high-precision analog signal processing tasks requiring flexible filter topologies.

Replacement Considerations

LTC1067CS#TRPBF serves as a functional equivalent with a 100:1 clock ratio. Designers must adjust external resistor values to maintain the target center frequency when substituting between the 50:1 and 100:1 variants.