LTC6957IDD-2#TRPBF

Clock Buffers, Drivers Overview

The LTC6957IDD-2#TRPBF is a low phase noise, dual output AC signal buffer/driver/logic level translator manufactured by Analog Devices Inc. It operates with a supply voltage range of 3.15V to 3.45V and supports input frequencies up to 300MHz. The device accepts CML, CMOS, LVDS, or LVPECL inputs and provides differential LVDS outputs. Key electrical characteristics include a typical propagation delay of 0.84ns, an additive jitter of 67fsRMS (12kHz to 20MHz), and a typical output skew of 3ps. It is housed in a 12-lead 3mm × 3mm DFN package.

Clock Buffers, Drivers Feature Summary

• Dual output LVDS logic converter with low phase noise performance
• Supports multiple input formats including CML, CMOS, LVDS, and LVPECL
• Frequency range up to 300MHz with typical skew of 3ps
• Additive jitter of 67fsRMS at 122.88MHz sine wave input

Clock Buffers, Drivers Applications

• System reference frequency distribution
• High speed ADC, DAC, and DDS clock driver
• Broadband wireless transceiver timing
• Medical imaging systems

Clock Buffers, Drivers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging for the IDD temperature grade (-40°C to 85°C). Confirm the 12-WFDFN Exposed Pad package dimensions match the PCB footprint requirements. Ensure the 3.15V to 3.45V supply voltage constraint aligns with the target system power rails before procurement.

Clock Buffers, Drivers Selection Notes

Select this component when LVDS differential outputs are required from mixed-signal inputs like CML or LVPECL. The LTC6957-2 variant is distinct from the -1 (LVPECL), -3 (CMOS in-phase), and -4 (CMOS complementary) models. Consider the 300MHz maximum input frequency and the specific additive phase noise requirements for high-speed data acquisition applications.

Clock Buffers, Drivers Part Context

This part belongs to the LTC6957 family of low phase noise buffers. The 'IDD' designation specifies the industrial temperature range (-40°C to 85°C) and the DFN package. The '-2' suffix identifies the LVDS output logic type. It is functionally similar to the MSOP packaged variants but offers a smaller form factor suitable for dense layouts.

Clock Buffers, Drivers Replacement Considerations

LTC6957IMS-2#TRPBF: Same electrical specifications and LVDS outputs, but in a 12-Lead Plastic MSOP package instead of DFN.