LTC1562AIG#TR

Overview

The LTC1562AIG#TR is a very low noise, low distortion active RC quad universal filter manufactured by Analog Devices Inc. It features four independent second-order filter sections capable of center frequencies from 10kHz to 150kHz. The device operates on a single or dual supply ranging from 4.75V to 10.5V total. Key electrical specifications include a typical center frequency accuracy of -0.3% for the A grade and a shutdown supply current of 1.0mA at VS = -2.375V. It utilizes a 20-lead plastic SSOP package.

Feature Summary

• Contains four matched second-order filter blocks that can be cascaded in various combinations to form higher-order filters
• Provides rail-to-rail input and output voltage swing capabilities with DC accurate performance
• Features a zero-power shutdown mode accessible via the SHDN pin to minimize power consumption
• Allows resistor-programmable center frequency, Q factor, and gain without requiring an external clock

Applications

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

Procurement Notes

Verify the specific ordering suffix #TR indicates tape and reel packaging when sourcing this component. Confirm the A grade designation ensures the tighter -0.3% typical center frequency accuracy specification compared to standard grades. Ensure the SSOP-20 package footprint matches the design requirements before finalizing procurement orders.

Selection Notes

Select the LTC1562AIG#TR when precise center frequency stability is critical due to its A grade tolerance. Consider the 10kHz to 150kHz operational range against the application signal bandwidth. Evaluate the need for the zero-power shutdown feature if system power management requires deep sleep states. Verify that the 20-lead SSOP package fits the available PCB real estate constraints.

Part Context

This component belongs to the LTC1562 series of continuous-time active filters. It serves as a versatile building block for analog signal processing where clocked switched-capacitor filters are unsuitable. The device integrates multiple filter stages into a single monolithic structure to reduce board space and component count.

Replacement Considerations

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