LT6350CMS8#PBF

Overview

The LT6350CMS8#PBF is a low noise single-ended to differential converter and ADC driver manufactured by Analog Devices Inc. It features rail-to-rail input and output capabilities, supporting supply voltages from 2.7V to 12V. The device provides a closed-loop gain of 2 V/V with a -3dB bandwidth of 33MHz and a typical slew rate of 48 V/µs. Key electrical characteristics include an input-referred voltage noise density of 1.9 nV/√Hz, a maximum differential offset voltage of ±400µV, and a supply current of 4.8mA at 5V. It is housed in an 8-lead MSOP package.

Feature Summary

• Converts high or low impedance single-ended signals into balanced differential outputs for driving SAR ADCs
• Features rail-to-rail input and output stages with fast settling time
• Includes internal matched resistors eliminating the need for external gain components
• Supports low power shutdown mode with minimal current consumption

Applications

• Driving 16-bit and 18-bit SAR ADCs
• Single-ended to differential signal conversion
• Differential line driver circuits

Procurement Notes

Verify the specific suffix CMS8 corresponds to the 8-lead MSOP package variant. Confirm the temperature grade C indicates operation within the 0°C to 70°C range as specified in the ordering information. Ensure compatibility with the required supply voltage and load conditions before finalizing procurement.

Selection Notes

Select this component when a low noise, high-speed interface between single-ended sources and differential ADCs is required. The fixed internal gain of two simplifies design by removing external feedback resistors. Consider the 33MHz bandwidth and 48 V/µs slew rate for applications requiring rapid signal transitions and wide dynamic range.

Part Context

This part belongs to the LT6350 family of precision difference amplifiers designed for analog front-end applications. The CMS8 designation specifically identifies the commercial temperature grade version packaged in an 8-lead Mini Small Outline Package (MSOP). Other variants in the series include industrial and extended temperature grades available in DFN packages.

Replacement Considerations

LT6350IMS8#PBF: Industrial temperature grade (-40°C to 85°C) in the same MSOP package.

FAQ

How is the output common mode voltage determined?

The output common mode voltage is set by applying a reference voltage directly to the +IN2 pin.

What is the maximum differential output swing on a single 5V supply?

On a single 5V supply, the outputs can swing from 55mV to 4.945V, allowing for approximately 8Vp-p differential output.