LTC1164-5CN#PBF

Overview

The LTC1164-5CN#PBF is a monolithic 8th-order switched-capacitor lowpass filter manufactured by Analog Devices Inc. It offers pin-selectable Butterworth or Bessel frequency responses and operates with a clock-tunable cutoff frequency up to 20kHz. The device consumes 4mA supply current with ±5V supplies and supports single 5V operation. Key electrical specifications include 100µVRMS wideband noise, total harmonic distortion below 0.02%, and a maximum clock frequency of 1MHz at ±5V or single 5V supplies. It is housed in a 14-pin PDIP package.

Feature Summary

• Pin-selectable configuration allows switching between Butterworth and Bessel lowpass responses without external components.
• Clock-tunable cutoff frequency enables precise adjustment of the filter bandwidth using an external TTL/CMOS-compatible clock source.
• Low power consumption design maintains high signal-to-noise ratio and low distortion while operating on single or dual supplies.
• Integrated switched-capacitor architecture eliminates the need for external resistors and capacitors.

Applications

• Anti-aliasing filters for data acquisition systems
• Battery-operated instruments requiring low power consumption
• Telecommunications signal processing
• Smoothing filters in precision measurement circuits

Procurement Notes

Verify the specific suffix CN#PBF corresponds to the 14-pin PDIP package and lead-free composition as defined in the official datasheet. Confirm that the C temperature range (-40°C to 85°C) meets the operational requirements of the target environment. Ensure the clock source provides a square wave with appropriate duty cycle and voltage thresholds compatible with the selected supply voltage.

Selection Notes

Select this component when an 8th-order response with minimal external parts is required. Choose the Butterworth response for maximally flat passband gain or the Bessel response for linear phase characteristics. Ensure the available clock frequency allows for the desired cutoff frequency ratio (50:1, 100:1, or 140:1). Verify that the input signal amplitude remains within limits to prevent slew rate limiting at the maximum clock frequency.

Part Context

The LTC1164-5 belongs to the family of low-power 8th-order switched-capacitor filters from Analog Devices. It is pin-compatible with the LTC1064-2 and LTC1064-3, facilitating direct upgrades or design variations within existing circuits. This series is designed to simplify analog filtering tasks by integrating passive components into the silicon die.

Replacement Considerations

The LTC1064-2 and LTC1064-3 are confirmed pin-compatible alternatives within the same product family. Verify that the substitute part number matches the required response type and supply voltage specifications before implementation.