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LT6658 Dual Output References: Datasheet, CAD Models and Features [Video]

Author: Irene
Date: 13 Oct 2021



CAD Models

Pin Configuration

Block Diagram




Product Attributes


Using Warning


The LT6658 precision 2.5V dual output reference combines the performance of a low drift low noise reference and a linear regulator. Both outputs are ideal for driving the precision reference inputs of high resolution ADCs and DACs, evenwithheavy loadingwhile simultaneously acting as output supplies powering microcontrollers and other supporting devices. Both outputs have the same precision specifications and track each other over temperature and load. Both outputs are nominally 2.5V, however each can be configured with external resistors to give an output voltage up to 6V.


Using Kelvin connections, the LT6658 typically has 0.1ppm/mA load regulation with up to 150mA load current. A noise reduction pin is available to band-limit and lower the total integrated noise.Dual outputs provide flexibility for powering reference and regulator applications and localizing PCB routing. The outputs have excellent supply rejection and are stable with 1µF to 50µF capacitors.Short circuit and thermal protection help maintain stability and prevent thermal overstress. The LT6658 is offered in the MSE16 exposed pad package.


CAD Models



Figure:  PCB Symbol




Figure:  Footprint




Figure:  3D Model


Pin Configuration



Figure:  Pin Configuration


Block Diagram



Figure:  Block Diagram



Dual Output Tracking Reference

  • Each Output Configurable: 2.5V to 6V
  • Output 1: 150mA Source/20mA Sink
  • Output 2: 50mA Source/20mA Sink

Low Drift:

  • A-Grade: 10ppm/°C Max
  • B-Grade: 20ppm/°C Max

High Accuracy:

  • A-Grade: ±05% Max
  • B-Grade: ±1% Max

Low Noise: 1.5ppmP-P (0.1Hz to 10Hz)

Wide Operating Voltage Range to 36V

Load Regulation: 0.1ppm/mA

AC PSRR: 96dB at 10kHz

Kelvin Sense Connection on Outputs

Thermal Shutdown

Separate Supply Pins for Each Output

Available in Exposed Pad Package MSE16



  • Microcontroller with ADC/DAC Applications
  • Data Acquisition Systems
  • Automotive Control and Monitoring
  • Precision Low Noise Regulators
  • Instrumentation and Process Control



You can download the datasheet from the link given below:



Product Attributes

Case/Package MSOP
Number of Pins 16
Max Operating Temperature 85 °C
Min Operating Temperature -40 °C
Number of Outputs 2
Reference Voltage 2.5 V
Schedule B 8542390000
Temperature Coefficient 10 ppm/°C
RoHS Compliant


Analog Devices, Inc. (ADI), also known simply as Analog, is an American multinational semiconductor company specializing in data conversion, signal processing and power management technology, headquartered in Wilmington, Massachusetts. In 2012, Analog Devices led the worldwide data converter market with a 48.5% share, according to analyst firm Databeans.


Using Warning

Note: Please check their parameters and pin configuration before replacing them in your circuit.


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