LTC6605IDJC-7#TRPBF

Overview

The LTC6605IDJC-7#TRPBF is a dual-channel, matched 2nd order lowpass filter with differential amplifiers. It features an adjustable f–3dB frequency range of 6.5MHz to 10MHz and operates on a supply voltage from 2.7V to 5.25V. The device provides pin-selectable gains of 0dB, 12dB, or 14dB and offers three-state power consumption modes: shutdown (0.35mA), medium power (16.2mA), and full power (33.1mA). It includes rail-to-rail output swing, buffered low impedance outputs, and adjustable output common mode voltage control.

Feature Summary

• Dual matched 2nd order lowpass filters with internal laser-trimmed resistors and capacitors for precise gain and phase matching.
• Low noise and distortion performance suitable for 16-bit dynamic range systems.
• Three-state BIAS pins allow selection between shutdown, medium power, and full power operation.
• Pin-selectable passband gain configurations without external components.

Applications

• WCDMA ADC driver/filter
• Antialiasing filter
• Single-ended to differential conversion
• DAC smoothing filter
• Zero-IF direct conversion receivers

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the IDJC variant meets the required industrial temperature range specifications for your application environment. Ensure compatibility with the 22-lead DFN package footprint during PCB layout review.

Selection Notes

Select this model for applications requiring high channel-to-channel matching in gain and phase. Consider the adjustable cutoff frequency range and available gain settings to match system requirements. Evaluate the power consumption modes to optimize energy efficiency versus performance needs.

Part Context

This part belongs to the LTC6605 family of dual matched filters. The IDJC suffix denotes the industrial temperature grade (-40°C to 85°C) and the 22-lead DFN package. The -7 designation specifies the nominal 7MHz filter characteristics. Other variants include CDJC for commercial temperature ranges.

Replacement Considerations

LTC6605CDJC-7#TRPBF is a compatible alternative with commercial temperature range specifications. Verify thermal performance and electrical parameter alignment before substitution.

FAQ

How is the power consumption controlled?

Power consumption is controlled via the BIAS pins. Driving the pin low enables shutdown, leaving it floating sets medium power, and driving it high enables full power operation.

What is the input common mode voltage range?

The input common mode range depends on the supply voltage and configuration. For a 3V supply, it typically ranges from -0.2V to 1.7V relative to V-.

Can the filter cutoff frequency be adjusted?

Yes, the f–3dB frequency is adjustable in the range of 6.5MHz to 10.0MHz using an optional external resistor per channel.