LTC1164-7CSW#PBF

Overview

The LTC1164-7CSW#PBF is a low power, clock-tunable monolithic 8th order lowpass filter with linear passband phase and flat group delay. It operates on a single 5V supply or dual supplies up to ±8V. The cutoff frequency is tuned via an external TTL or CMOS clock, supporting ratios of 50:1 or 100:1. Key electrical parameters include a typical supply current of 2.5mA at 5V, a maximum clock frequency of 1MHz, and a wide dynamic range with THD + Noise up to 75dB on a single supply. The device features no external components needed for basic operation and provides better than Bessel roll-off characteristics.

Feature Summary

• Linear phase response with flat group delay
• Clock-tunable cutoff frequency
• Low power consumption
• No external components required

Applications

• Data communication filters
• Time delay networks
• Phase matched filters

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the CSW designation corresponds to the commercial temperature range (-40°C to 85°C) and the SW package type. Ensure the supplier provides the official datasheet for the exact part number to validate pinout and electrical specifications against the manufacturer's documentation.

Selection Notes

Select this component when a linear phase response and flat group delay are critical for signal integrity. It is suitable for applications requiring precise time delay matching between multiple channels. Consider the clock-to-cutoff ratio requirements; use the 50:1 ratio for double-sampling to reduce aliasing risks or the 100:1 ratio for higher attenuation. Ensure the available clock source meets the TTL or CMOS level thresholds specified in the datasheet.

Part Context

This part belongs to the LTC1164 family of universal filter building blocks. It is pin-compatible with the LTC1064-X series and LTC1264-7. The 'CSW' suffix denotes the commercial temperature grade and the 16-lead plastic SO (wide) package. It serves as a complete solution for high-order filtering without discrete LC components.

Replacement Considerations

The LTC1164-7CN and LTC1164-7CJ are listed as obsolete packages but remain pin-compatible alternatives. For new designs, verify if the N package (14-lead PDIP) is acceptable as an alternate source, noting the difference in pin count and package dimensions compared to the SW package.