LTC1067-50IGN#TRPBF

Overview

The LTC1067-50IGN#TRPBF is a dual, rail-to-rail, very low noise universal switched-capacitor building block housed in a 16-lead SSOP package. It operates from a single 3V to –5V supply and consumes approximately 1mA at 3.3V. The device features two identical second-order sections with a clock-to-center frequency ratio of 50:1. Key electrical parameters include a center frequency range of 0.001 to 40 kHz, a DC open-loop gain of 90 dB, and a typical power supply current of 1.00 mA at 3V. It supports multiple operating modes for various filter topologies.

Feature Summary

• Rail-to-rail input and output operation enables full dynamic range utilization on single supplies.
• Dual second-order filter architecture allows for the construction of high-precision fourth-order filters using minimal external components.
• Low power consumption design suitable for battery-operated applications while maintaining wide dynamic range performance.

Applications

• Notch filters
• Narrowband bandpass filters
• Tone detection systems
• Noise reduction systems

Procurement Notes

Verify the specific suffix IGN#TRPBF against the manufacturer's official documentation to confirm the industrial temperature range and tape-and-reel packaging configuration. Ensure that the ordering information matches the exact part number required for your bill of materials to avoid discrepancies in temperature ratings or shipping formats.

Selection Notes

Select this component when a low-power, dual switched-capacitor filter is required with a 50:1 clock-to-center frequency ratio. It is appropriate for designs needing rail-to-rail signal handling on a single supply. Compare it against the standard LTC1067 if higher speed or different clock ratios are needed, as this variant offers reduced current consumption.

Part Context

This part belongs to the LTC1067/LTC1067-50 family of universal switched-capacitor building blocks. It shares the same core architecture as the LTC1067 but is optimized for lower power consumption by halving the internal clock-to-center frequency ratio. The 'IGN' designation indicates the industrial temperature grade and SSOP package type.

Replacement Considerations

The LTC1067IGN is a direct functional alternative with a 100:1 clock ratio and higher power consumption. Other members of the family include the LTC1067CGN and LTC1067-50CGN, which differ primarily in temperature rating. Verify pin compatibility and clock ratio requirements before substitution.

FAQ

What is the maximum clock frequency for the LTC1067-50?

The maximum clock frequency is 2.0 MHz when the Q factor is less than 2.5 and the supply voltage is -5V.

How does the LTC1067-50 differ from the LTC1067?

The LTC1067-50 has a clock-to-center frequency ratio of 50:1 compared to the LTC1067's 100:1. It also consumes approximately half the current of the standard LTC1067.

What is the typical power supply current at 3.3V?

The typical supply current is about 1mA when powered from a 3.3V supply.