LTC6406CMS8E#PBF

Overview

The LTC6406CMS8E#PBF is a low noise, fully differential amplifier optimized for 3V single supply operation. It features a 3GHz gain-bandwidth product and an 800MHz closed-loop bandwidth at unity gain. The device offers rail-to-rail differential input capability and adjustable output common mode voltage via the VOCM pin. It draws 18mA of supply current and supports a hardware shutdown mode reducing consumption to 300μA. The component is housed in an 8-lead MSOP package with an exposed pad.

Feature Summary

• Provides fully differential input and output signal processing with accurate phase balancing.
• Features rail-to-rail input common mode range compatible with wide dynamic signals.
• Includes hardware shutdown functionality for significant power reduction.
• Supports independent adjustment of output common mode voltage.

Applications

• Differential input ADC driver
• Single-ended to differential conversion
• Level-shifting ground-referenced signals
• High linearity direct conversion receivers

Procurement Notes

Verify the specific suffix E indicates the commercial temperature grade (0°C to 70°C) as distinct from the industrial grade variant. Confirm the #PBF designation ensures lead-free compliance per RoHS standards. Cross-reference the manufacturer's latest lifecycle status to ensure availability before finalizing procurement plans.

Selection Notes

Select this component when driving 12-bit to 16-bit single-supply differential ADCs requiring level shifting. Ensure the application operates within the 2.7V to 3.5V supply range. Consider the 8-lead MSOP package constraints for PCB layout and thermal management compared to the QFN alternative.

Part Context

This part belongs to the LTC6406 family of wideband differential amplifiers designed for high-speed data acquisition systems. The CMS8E variant specifically denotes the commercial temperature range version packaged in an 8-lead MSOP format, distinguishing it from the industrial grade and QFN package options available in the same series.

Replacement Considerations

Consult manufacturer documentation for verified substitutes. The ADA4930-1YCPZ-R2 is identified as a recommended replacement for similar MSOP configurations within the portfolio.

FAQ

What is the default output common mode voltage if the VOCM pin is left open?

If the VOCM pin is left floating, an internal resistive divider sets the default output common mode voltage to 1.25V when operating with a 3V supply.

How does the SHDN pin control the device state?

Connecting the SHDN pin to V– activates the low power shutdown state with high-impedance outputs. Leaving the pin floating or tying it to V+ maintains normal active operation.