LTC1064-1CN#PBF

Overview

The LTC1064-1CN#PBF is an 8th-order, clock-sweepable elliptic lowpass switched-capacitor filter housed in a 14-pin PDIP package. It operates from ±2.37V to ±8V supplies with a maximum corner frequency of 50kHz. The device features a 100:1 clock-to-center frequency ratio and requires no external components for cutoff frequencies up to 20kHz. Electrical specifications include 150µVRMS total wideband noise, 0.03% THD at 3VRMS input, and stopband attenuation exceeding 68dB at 1.5 times the cutoff frequency.

Feature Summary

• Provides 8th-order elliptic filtering characteristics within a compact 14-pin package without requiring external passive components for standard operation.
• Features clock-sweepable functionality allowing precise tuning of the filter's cutoff frequency via an external TTL or CMOS clock signal.
• Delivers low harmonic distortion and wideband noise performance comparable to multi-op amp RC active realizations.

Applications

• Antialiasing filters for data acquisition systems
• Telecom PCM filters
• Frequency-selective signal processing

Procurement Notes

Verify the specific ordering suffix CN#PBF against the manufacturer's current datasheet to confirm the package type and lead-free status. Ensure the supply chain documentation matches the required operating temperature range of -40°C to +85°C. Cross-reference the part number with official Analog Devices records to validate authenticity and compliance with RoHS directives before procurement.

Selection Notes

Select this component when an 8th-order elliptic response is required with minimal external component count. It is suitable for applications needing a tunable cutoff frequency between 0.1Hz and 50kHz driven by an external clock. Consider the 14-pin DIP package for prototyping or through-hole assembly requirements where surface mount options are not feasible.

Part Context

The LTC1064-1 belongs to the LTC1064 family of switched-capacitor filters, which also includes variants like the LTC1064-2 and LTC1064-4. These devices share similar internal architectures but differ in filter topology, such as lowpass versus universal building blocks. The CN suffix specifically denotes the 14-lead plastic dual in-line package variant within this product line.

Replacement Considerations

The LTC1064-1 is pin-compatible with the LTC1064-2. However, substitution requires verifying that the target application supports the alternative filter topology, as the LTC1064-2 offers different functional capabilities compared to the elliptic lowpass design of the LTC1064-1.