LTC1569CS8-6#TRPBF

Overview

The LTC1569CS8-6#TRPBF is a 10th order lowpass filter featuring linear phase and a root raised cosine amplitude response. It operates from single supplies of 3V to 5V or dual supplies including -5V, with a maximum total supply voltage of 11V. The device draws 3mA at 3V and up to 17mA at 10V. It offers a typical cutoff frequency accuracy of 1% using a single external resistor (REXT) and supports divider settings of 1, 4, or 16 for power reduction. Key electrical characteristics include a maximum DC offset of 5mV, 82dB signal-to-noise ratio at 5V, and 80dB CMRR at DC.

Feature Summary

• Provides linear phase and root raised cosine amplitude response suitable for pulse shaping in data communications.
• Features pin-programmable cutoff frequency via a single external resistor with internal oscillator division ratios of 1, 4, or 16.
• Delivers high DC accuracy with a maximum output DC offset of 5mV and 80dB common-mode rejection ratio.
• Supports differential or single-ended inputs and includes low-power modes that reduce supply current by up to 40%.

Applications

• Data communication filters for 3V operation
• Linear phase and phase matched filters for I/Q signal processing
• Pin programmable cutoff frequency lowpass filters

Procurement Notes

Verify the component status as discontinued or end-of-life through official Analog Devices channels before finalizing design-in decisions. Confirm that the SO-8 package dimensions and pinout match the schematic requirements. Ensure the operating temperature range of 0°C to 70°C aligns with the environmental specifications of the target application system.

Selection Notes

Select this component when a 10th order lowpass filter with linear phase is required in an 8-pin surface mount package. Choose the divide-by-4 or divide-by-16 mode if power consumption must be minimized below the standard 3mA baseline. Ensure the external resistor tolerance meets the desired cutoff frequency accuracy, as the internal oscillator relies on REXT for timing precision.

Part Context

This part belongs to the LTC1569 family of sampled data filters, which are designed to eliminate the need for external clock generators. The 'C' suffix indicates the commercial temperature grade (0°C to 70°C), while the 'S8' denotes the 8-lead plastic small outline package. The '#TRPBF' suffix specifies the tape and reel packaging format with lead-free composition.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.