LTC6602CUF#PBF

Overview

The LTC6602CUF#PBF is a dual, matched, programmable bandpass or lowpass filter and differential driver manufactured by Analog Devices Inc. It operates on a single 2.7V to 3.6V supply and features a low power shutdown mode. The device offers configurable gain settings of 1x, 4x, 16x, and 32x, with guaranteed phase matching within 2 degrees and gain matching within 0.2dB between channels. Filter cutoff frequencies are set via a single resistor for internal clocking (5th order lowpass: 42kHz to 900kHz; 4th order highpass: 4.2kHz to 90kHz) or controlled externally. It includes fully differential inputs and outputs with an input range extending from 0V to 5V.

Feature Summary

• Dual matched filter channels with guaranteed phase and gain matching suitable for I/Q applications
• Configurable as lowpass or bandpass with programmable gain levels
• Low noise performance with rail-to-rail differential inputs and outputs
• Flexible control interface supporting both pin programming and serial communication

Applications

• UHF RFID Reader Dual Baseband Filter and Dual ADC
• Multiprotocol RFID Readers including EPC-GEN2, ISD and IPX
• IDEN, PHS, GSM Basestations
• Wireless Telemetry Systems

Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and tube packaging when sourcing. Confirm the temperature grade 'C' corresponds to the commercial range of 0°C to 70°C rather than the industrial range. Ensure the QFN-24 package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component for applications requiring highly matched dual filters with low distortion. Choose the CU variant for commercial temperature environments. Consider the external clock option if precise frequency synchronization across multiple devices is required. Verify that the input signal range stays within the specified 0V to 5V limits to ensure proper operation.

Part Context

This part belongs to the LTC6602 family of dual matched filters. The CU designation specifies the commercial temperature grade, while the IUF variant covers the extended industrial range. Both share identical electrical characteristics but differ in their qualified operating temperature ranges. The QFN package provides a compact solution for space-constrained designs.

Replacement Considerations

The LTC6602IUF#PBF serves as the industrial temperature grade equivalent. No direct cross-model replacements are documented in the official datasheet. Verify pin compatibility and thermal performance if substituting with other dual filter architectures.