LT6350IDD#PBF

Overview

The LT6350IDD#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 fast settling time of 240ns for an 8VP-P step at 0.01% accuracy and a -3dB bandwidth of 33MHz. Input-referred op amp noise is 1.9nV/√Hz with input current noise of 1.1pA/√Hz. It operates over a temperature range of –40°C to 85°C and draws 4.8mA from a 5V supply.

Feature Summary

• Converts high or low impedance single-ended signals to low impedance balanced differential outputs suitable for driving SAR ADCs
• Features very low noise op amps capable of supporting SNR greater than 110dB in a 1MHz bandwidth
• Input op amp is trimmed for constant low input-referred voltage offset across the input range to prevent distortion degradation
• Includes a low power shutdown mode consuming just 60µA

Applications

• 16-bit and 18-bit SAR ADC drivers
• Single-ended to differential conversion
• Differential line driver

Procurement Notes

Verify the specific suffix IDD#PBF corresponds to the industrial temperature grade (-40°C to 85°C) and DFN package. Confirm lead-free finish status and RoHS compliance against the manufacturer's latest ordering information. Ensure the application environment matches the specified operating temperature limits.

Selection Notes

Select this component when driving high-performance differential SAR ADCs requiring low noise and fast settling. The internal gain configuration eliminates the need for external resistors in standard applications. Consider the 3mm x 3mm DFN package for space-constrained designs requiring rail-to-rail operation on a single 5V supply.

Part Context

This part belongs to the LT6350 family of low noise single-ended to differential converters. It utilizes a two-op-amp topology where one op amp acts as a buffer and the other as a unity-gain inverter. This architecture allows for precise control of the output common-mode voltage via the +IN2 pin while maintaining high DC linearity.

Replacement Considerations

LT6350CDD#PBF (Commercial Grade), LT6350HDD#PBF (High Temp Grade)

FAQ

How is the output common mode voltage controlled?

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

What is the maximum capacitive load the device can drive?

The device can drive up to 56pF of capacitive load per output with 20% overshoot without series output resistors.