LT6658 - Precision Dual Output, High Current, Low Noise, Voltage Reference

Features

  • Dual Output Tracking Reference
    • Each Output Configurable 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: ±0.05% Max
    • B-Grade: ±0.1% 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 Output Voltage Options: 1.2V, 1.8V, 2.5V, 3V, 3.3V, 5V. All Options are Adjustable
  • Available in Exposed Pad Package MSE16

Typical Application

LT6658 Typical Application
LT6658 Typical Application

Description

The LT®6658 is a family of precision dual output references combining the performance of a precision voltage reference and a linear regulator that we call the Refulator™. Both outputs are ideal for driving the reference inputs of high resolution ADCs and DACs, even with heavy loading, while simultaneously powering microcontrollers and other circuitry. Both outputs have the same precision specifications and track each other over temperature and load. Each output 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.

Separate supply pins are provided for each output, providing an option to reduce power consumption and isolate the buffer amplifiers. The outputs have excellent supply rejection and are stable with 1µF to 50µF capacitors. 

The LT6658 is available in a 16-lead MSOP with an exposed pad for thermal management. Short circuit and thermal protection help to prevent thermal overstress.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT6658AHMSE-1.2#PBF H Yes
LT6658AHMSE-1.2#TRPBF H Yes
LT6658AHMSE-1.8#PBF H Yes
LT6658AHMSE-1.8#TRPBF H Yes
LT6658AHMSE-2.5#PBF MS-16E MSE H 05-08-1667 Yes
LT6658AHMSE-2.5#TRPBF MS-16E MSE H 05-08-1667 Yes
LT6658AHMSE-3.3#PBF H Yes
LT6658AHMSE-3.3#TRPBF H Yes
LT6658AHMSE-3#PBF H Yes
LT6658AHMSE-3#TRPBF H Yes
LT6658AHMSE-5#PBF H Yes
LT6658AHMSE-5#TRPBF H Yes
LT6658AIMSE-1.2#PBF I Yes
LT6658AIMSE-1.2#TRPBF I Yes
LT6658AIMSE-2.5#PBF MS-16E MSE I 05-08-1667 Yes
LT6658AIMSE-2.5#TRPBF MS-16E MSE I 05-08-1667 Yes
LT6658AIMSE-3.3#PBF I Yes
LT6658AIMSE-3.3#TRPBF I Yes
LT6658AIMSE-3#PBF I Yes
LT6658AIMSE-3#TRPBF I Yes
LT6658AIMSE-5#PBF I Yes
LT6658AIMSE-5#TRPBF I Yes
LT6658BHMSE-1.2#PBF H Yes
LT6658BHMSE-1.2#TRPBF H Yes
LT6658BHMSE-1.8#PBF H Yes
LT6658BHMSE-1.8#TRPBF H Yes
LT6658BHMSE-2.5#PBF MS-16E MSE H 05-08-1667 Yes
LT6658BHMSE-2.5#TRPBF MS-16E MSE H 05-08-1667 Yes
LT6658BHMSE-3.3#PBF H Yes
LT6658BHMSE-3.3#TRPBF H Yes
LT6658BHMSE-3#PBF H Yes
LT6658BHMSE-3#TRPBF H Yes
LT6658BHMSE-5#PBF H Yes
LT6658BHMSE-5#TRPBF H Yes
LT6658BIMSE-1.2#PBF I Yes
LT6658BIMSE-1.2#TRPBF I Yes
LT6658BIMSE-1.8#PBF I Yes
LT6658BIMSE-1.8#TRPBF I Yes
LT6658BIMSE-2.5#PBF MS-16E MSE I 05-08-1667 Yes
LT6658BIMSE-2.5#TRPBF MS-16E MSE I 05-08-1667 Yes
LT6658BIMSE-3.3#PBF I Yes
LT6658BIMSE-3.3#TRPBF I Yes
LT6658BIMSE-3#PBF I Yes
LT6658BIMSE-3#TRPBF I Yes
LT6658BIMSE-5#PBF I Yes
LT6658BIMSE-5#TRPBF I Yes


LT6658 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT6658AHMSE-1.2#PBF H $4.94 $3.54 Yes
LT6658AHMSE-1.2#TRPBF H $5.00 $3.60 Yes
LT6658AHMSE-1.8#PBF H $4.94 $3.54 Yes
LT6658AHMSE-1.8#TRPBF H $5.00 $3.60 Yes
LT6658AHMSE-2.5#PBF MS-16E H $4.94 $3.54 Yes
LT6658AHMSE-2.5#TRPBF MS-16E H $5.00 $3.60 Yes
LT6658AHMSE-3.3#PBF H $4.94 $3.54 Yes
LT6658AHMSE-3.3#TRPBF H $5.00 $3.60 Yes
LT6658AHMSE-3#PBF H $4.94 $3.54 Yes
LT6658AHMSE-3#TRPBF H $5.00 $3.60 Yes
LT6658AHMSE-5#PBF H $4.94 $3.54 Yes
LT6658AHMSE-5#TRPBF H $5.00 $3.60 Yes
LT6658AIMSE-1.2#PBF I $4.41 $3.16 Yes
LT6658AIMSE-1.2#TRPBF I $4.47 $3.22 Yes
LT6658AIMSE-2.5#PBF MS-16E I $4.41 $3.16 Yes
LT6658AIMSE-2.5#TRPBF MS-16E I $4.47 $3.22 Yes
LT6658AIMSE-3.3#PBF I $4.41 $3.16 Yes
LT6658AIMSE-3.3#TRPBF I $4.47 $3.22 Yes
LT6658AIMSE-3#PBF I $4.41 $3.16 Yes
LT6658AIMSE-3#TRPBF I $4.47 $3.22 Yes
LT6658AIMSE-5#PBF I $4.41 $3.16 Yes
LT6658AIMSE-5#TRPBF I $4.47 $3.22 Yes
LT6658BHMSE-1.2#PBF H $3.67 $2.64 Yes
LT6658BHMSE-1.2#TRPBF H $3.73 $2.70 Yes
LT6658BHMSE-1.8#PBF H $3.67 $2.64 Yes
LT6658BHMSE-1.8#TRPBF H $3.73 $2.70 Yes
LT6658BHMSE-2.5#PBF MS-16E H $3.67 $2.64 Yes
LT6658BHMSE-2.5#TRPBF MS-16E H $3.73 $2.70 Yes
LT6658BHMSE-3.3#PBF H $3.67 $2.64 Yes
LT6658BHMSE-3.3#TRPBF H $3.73 $2.70 Yes
LT6658BHMSE-3#PBF H $3.67 $2.64 Yes
LT6658BHMSE-3#TRPBF H $3.73 $2.70 Yes
LT6658BHMSE-5#PBF H $3.67 $2.64 Yes
LT6658BHMSE-5#TRPBF H $3.73 $2.70 Yes
LT6658BIMSE-1.2#PBF I $3.28 $2.35 Yes
LT6658BIMSE-1.2#TRPBF I $3.34 $2.41 Yes
LT6658BIMSE-1.8#PBF I $3.28 $2.35 Yes
LT6658BIMSE-1.8#TRPBF I $3.34 $2.41 Yes
LT6658BIMSE-2.5#PBF MS-16E I $3.28 $2.35 Yes
LT6658BIMSE-2.5#TRPBF MS-16E I $3.34 $2.41 Yes
LT6658BIMSE-3.3#PBF I $3.28 $2.35 Yes
LT6658BIMSE-3.3#TRPBF I $3.34 $2.41 Yes
LT6658BIMSE-3#PBF I $3.28 $2.35 Yes
LT6658BIMSE-3#TRPBF I $3.34 $2.41 Yes
LT6658BIMSE-5#PBF I $3.28 $2.35 Yes
LT6658BIMSE-5#TRPBF I $3.34 $2.41 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2432A LT6658 Demo Board | Low Noise, High Current, Precision Reference $50.00
DC2542A LTC2358-18, LTM2893, ADA4522-1, LT6658 Demo Board | Isolated Industrial Data Acquisition Board (req ArrowSoCkit) $300.00
Buy Now
Click here to view our complete list of demo boards

Applications

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

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Design Tools

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Models for the following parts are available in LTspice:
LT6658

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