LTC1062CJ8

Overview

The LTC1062CJ8 is a 5th order maximally flat lowpass filter manufactured in an 8-lead ceramic dual in-line package (CDIP). It operates on single or dual supplies ranging from ±2.5V to ±9V, with a total supply voltage limit of 18V. The device provides DC accurate filtering with no DC error, utilizing an architecture that places the filter outside the DC path. The cutoff frequency is determined by an internal clock divided by 1, 2, or 4, maintaining a typical ratio of 100:1. Operating temperature range is specified from -40°C to +85°C.

Feature Summary

• Eliminates DC offset and low-frequency noise issues through unique signal architecture
• Provides a 5th order Butterworth response with maximally flat passband characteristics
• Supports cascading for increased rolloff steepness up to 10th order performance
• Features an integrated buffer output alongside the main filtered signal output

Applications

• Antialiasing filters for data acquisition systems
• Low-level signal conditioning for strain gauges and scales
• Digital voltmeter input stages requiring high DC accuracy
• Filtering AC signals riding on high DC voltage levels

Procurement Notes

Verify component authenticity using official Analog Devices documentation. Confirm the J8 package designation matches specific hermetic requirements. Check for obsolete status indicators as legacy packages may require alternate sourcing strategies.

Selection Notes

Select this component when precise DC accuracy is critical for lowpass filtering applications. Ensure the external RC network values align with the desired cutoff frequency relative to the available clock source. Verify supply voltage constraints fit within the ±2.5V to ±9V operational window.

Part Context

This part belongs to the LTC1062 family of switched-capacitor filters. It shares core functionality with variants like the LTC1062CN8 but differs in packaging technology. The J8 suffix specifically denotes the ceramic dual in-line package suitable for environments requiring hermetic sealing.

Replacement Considerations

Consider the LTC1062CN8 as a direct package alternative if hermeticity is not required. Evaluate the LTC1063 for similar filtering needs without external components.