LT6350HDD#PBF

Overview

The LT6350HDD#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 operates over an extended temperature range of –40°C to 125°C and is housed in a compact 3mm × 3mm 8-lead plastic DFN package. Key electrical specifications include a typical 33MHz differential bandwidth, 1.9nV/√Hz input-referred op amp noise, and a maximum differential offset voltage of ±400µV. It draws 4.8mA at 5V and consumes only 60µA in shutdown mode.

Feature Summary

• Converts high or low impedance single-ended signals into balanced differential outputs suitable for driving SAR ADCs
• Features fast settling time with minimal distortion across the operating frequency range
• Includes internal precision resistors eliminating the need for external gain components
• Supports low power operation with a dedicated shutdown pin for current reduction

Applications

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

Procurement Notes

Verify the specific suffix 'HDD' corresponds to the required industrial temperature grade (-40°C to 125°C) and the 8-lead DFN package format. Confirm that the '#PBF' designation indicates lead-free finish compliance. Ensure the ordering information matches the exact part number to avoid functional discrepancies related to temperature ranges or packaging types.

Selection Notes

Select this component when a high-impedance single-ended source requires conversion to a low-impedance differential drive for high-resolution data acquisition systems. The device is appropriate for applications demanding low noise performance and wide dynamic range. Consider the supply voltage requirements and the necessity for rail-to-rail output swing when designing the interface circuitry.

Part Context

This component belongs to the LT6350 family of analog signal chain devices designed for precision measurement applications. It integrates two operational amplifiers within a single package to perform signal conditioning and conversion functions. The device is engineered to maintain high linearity and low noise characteristics essential for accurate data conversion in industrial and scientific instrumentation environments.

Replacement Considerations

LT6350IDD#PBF

FAQ

How does the LT6350 handle input common-mode voltage variations?

The input op amp is trimmed for constant low input-referred voltage offset over the entire input range, preventing VOS steps from degrading distortion.

What is the function of the +IN2 pin?

The +IN2 pin is used to set the output common mode voltage level for the differential output signals.