LTC6957IDD-4#PBF

Clock Buffers, Drivers Overview

The LTC6957IDD-4#PBF is a low phase noise, dual output buffer/driver/logic converter from Analog Devices. It features complementary CMOS outputs and supports input frequencies up to 300 MHz. The device operates on a single supply voltage ranging from 3.15V to 3.45V. It accepts sine wave or logic level inputs (≤2VP-P) and provides selectable low-pass filtering via FILTA and FILTB pins to minimize additive noise. Packaged in a 12-lead (3mm × 3mm) plastic DFN with an exposed ground pad, it is specified for industrial temperatures from –40°C to 85°C.

Clock Buffers, Drivers Feature Summary

• Dual output buffer with complementary CMOS logic
• Low additive jitter: 53fs RMS at 10Hz–150MHz offset
• Input frequency range up to 300 MHz
• Selectable bandwidth filtering for noise optimization

Clock Buffers, Drivers Applications

• System reference frequency distribution
• High-speed ADC, DAC, and DDS clock drivers
• Broadband wireless transceivers
• Test and measurement equipment

Clock Buffers, Drivers Procurement Notes

Verify the package type matches the 12-lead DFN specification. Confirm the temperature grade corresponds to the 'I' suffix for the –40°C to 85°C range. Ensure the ordering suffix '#PBF' indicates lead-free tube packaging as documented in the manufacturer's order information table.

Clock Buffers, Drivers Selection Notes

Select this variant when complementary CMOS outputs are required. Compare against LTC6957-3 if in-phase outputs are sufficient. Verify that the 3.15V to 3.45V supply range aligns with the system power rails. Consider the DFN package thermal characteristics relative to the MSOP option for PCB layout constraints.

Clock Buffers, Drivers Part Context

This component belongs to the LTC6957 family of AC signal buffers. Other members include the LTC6957-1 (LVPECL), LTC6957-2 (LVDS), and LTC6957-3 (CMOS in-phase). The IDD-4 designation specifically identifies the industrial temperature grade, DFN package, and complementary CMOS output configuration within this series.

Clock Buffers, Drivers Replacement Considerations

LTC6957IMS-4#PBF offers identical electrical performance in a 12-lead MSOP package. LTC6957HMS-4#PBF provides the same functionality with an extended temperature range of –40°C to 125°C in an MSOP package.