LTC1562ACG#TRPBF

Overview

The LTC1562ACG#TRPBF is a low noise, low distortion continuous-time active RC quad universal filter housed in a 20-lead plastic SSOP package. It contains four independent second-order filter blocks with rail-to-rail inputs and outputs, optimized for center frequencies between 10kHz and 150kHz. The A-grade variant provides a typical center frequency accuracy of -0.3%. It operates on single or dual supplies totaling 5V to 10V, drawing approximately 19mA at -5V. Key electrical parameters include a total supply voltage range of 4.75V to 10.5V, a DC offset magnitude of 3mV to 5mV, and a shutdown supply current of 1.5mA to 15mA.

Feature Summary

• Four matched second-order filter sections capable of simultaneous lowpass and bandpass responses
• Rail-to-rail input and output voltages with high dynamic range performance
• Resistor-programmable center frequency, Q factor, and gain using simple design formulas
• Zero-power shutdown mode that effectively removes the amplifiers from the circuit

Applications

• High resolution systems requiring 14 bits to 18 bits of precision
• Antialiasing and reconstruction filters for data acquisition chains
• Data communications and equalizer circuits
• Dual or I-and-Q channel processing using two matched fourth-order filters in one package

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm the A-grade designation ensures tighter center frequency accuracy specifications compared to standard grades. Ensure the 20-lead SSOP package matches the target PCB footprint requirements. Check RoHS compliance status against current regulatory standards for the intended market.

Selection Notes

Select this component when designing continuous-time filters without clock-related noise concerns. The A-grade version is suitable for applications demanding higher center frequency accuracy. Consider the resistor-programmable nature for flexible response shaping. Evaluate the single or dual supply options based on system power constraints and signal swing requirements.

Part Context

This device belongs to the LTC1562 family of very low noise active filters. It serves as a versatile building block for analog signal processing where precise frequency selection is critical. The quad configuration allows complex filter topologies to be implemented within a single integrated circuit, reducing board space and component count.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.