LTC1562AIG#PBF

Overview

The Analog Devices LTC1562AIG#PBF 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 a center frequency range of 10kHz to 150kHz and operates on a total supply voltage between 4.75V and 10.5V. The A-grade variant provides a typical center frequency accuracy of -0.3%. Key electrical specifications include a typical signal-to-noise ratio of 97dB on a single 5V supply and a DC offset magnitude of 5mV maximum. The device features rail-to-rail inputs and outputs and includes a zero-power shutdown mode.

Feature Summary

• Four independent second-order filter sections capable of simultaneous lowpass and bandpass responses
• Rail-to-rail input and output voltage swing capability for wide dynamic range operation
• Resistor-programmable center frequency, quality factor, and gain using simple external components
• Zero-power shutdown mode that effectively removes the amplifiers from the circuit

Applications

• High resolution systems requiring 14 bits to 18 bits 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 against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure the component meets RoHS compliance requirements for your assembly process. Confirm availability status directly with authorized distributors as stock levels fluctuate. Validate pin compatibility with your PCB footprint before finalizing procurement decisions.

Selection Notes

Select this component when designing continuous-time filters without clock requirements. The A-grade version offers tighter center frequency accuracy compared to standard grades. Consider the 10kHz to 150kHz operating range and verify that external resistor values can drive the required load conditions. Evaluate the need for dual versus single supply configurations based on system power constraints.

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 applications where high dynamic range and precise frequency response are critical. The device replaces traditional LC filter modules by providing multiple filter functions within a single integrated circuit package.

Replacement Considerations

Public confirmed substitute part numbers: LTC1562CG, LTC1562ACG, LTC1562IG.