LTC1562IG#TRPBF

Overview

The LTC1562IG#TRPBF is a low noise, low distortion continuous-time active RC quad universal filter from Analog Devices Inc. It features four independent second-order filter blocks capable of center frequencies between 10kHz and 150kHz without requiring an external clock. The device supports rail-to-rail input and output voltages with a total supply voltage range of 4.75V to 10.5V. Typical signal-to-noise ratios reach 103dB with a –5V supply and 97dB with a single 5V supply. The IC operates within an industrial temperature range of –40°C to +85°C and is housed in a 20-lead plastic SSOP package.

Feature Summary

• Continuous-time architecture eliminates the need for external clock signals
• Four independent second-order sections allow flexible cascading configurations
• Rail-to-rail inputs and outputs maximize dynamic range
• Resistor-programmable parameters for center frequency, Q factor, and gain

Applications

• High resolution systems (14 bits to 18 bits)
• Antialiasing and reconstruction filters
• Data communications and equalizers
• Dual or I-and-Q channels using two matched fourth-order filters

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the 'I' grade designation corresponds to the required industrial operating temperature range of –40°C to +85°C for your application environment. Ensure compatibility with the 20-lead SSOP footprint during PCB layout.

Selection Notes

Select this component when designing filters with center frequencies between 10kHz and 150kHz that require high dynamic range without clock-related noise. Consider the internal precision components and external resistor requirements for setting fO and Q. Evaluate the shutdown mode functionality if power conservation is necessary during idle periods.

Part Context

This part belongs to the LTC1562 family of very low noise active RC filters. It serves as a versatile building block for analog signal processing chains where precise filtering characteristics are critical. The device integrates multiple filter stages into a single monolithic solution, simplifying design compared to discrete implementations.

Replacement Considerations

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