LTC6655 - 0.25ppm Noise, Low Drift Precision References

Features

  • Low Noise: 0.25ppmP-P (0.1Hz to 10Hz) 625nVP-P for the LTC6655-2.5
  • Low Drift: 2ppm/°C Max
  • High Accuracy: ±0.025% Max
  • No Humidity Sensitivity (LS8 Package)
  • Thermal Hysteresis (LS8): 30ppm (–40°C to 85°C)
  • Long-Term Drift (LS8): 20ppm/√kHr
  • 100% Tested at –40°C, 25°C and 125°C
  • Load Regulation: <10ppm/mA
  • Sinks and Sources Current: ±5mA
  • Low Dropout: 500mV
  • Maximum Supply Voltage: 13.2V
  • Low Power Shutdown: <20μA Max
  • Available Output Voltages: 1.25V, 2.048V, 2.5V, 3V, 3.3V, 4.096V, 5V
  • Available in an 8-Lead MSOP and High Stability Hermetic 5mm × 5mm LS8 Packages

Typical Application

LTC6655 Typical Application
LTC6655 Typical Application

Description

The LTC®6655 is a complete family of precision bandgap voltage references, offering exceptional noise and drift performance. This low noise and drift is ideally suited for the high resolution measurements required by instrumentation and test equipment. In addition, the LTC6655 is fully specified over the temperature range of –40°C to 125°C, ensuring its suitability for demanding automotive and industrial applications. Advanced curvature compensation allows this bandgap reference to achieve a drift of less than 2ppm/°C with a predictable temperature characteristic and an output voltage accurate to ±0.025%, reducing or eliminating the need for calibration.

The LTC6655 can be powered from as little as 500mV above the output voltage to as much as 13.2V. Superior load regulation with source and sink capability, coupled with exceptional line rejection, ensures consistent performance over a wide range of operating conditions. A shutdown mode is provided for low power applications.

The LTC6655 references are offered in an 8-lead MSOP package and an 8-lead LS8 package. The LS8 is a 5mm × 5mm surface mount hermetic package that provides outstanding stability.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
Drawing
RoHS
LTC6655BHLS8-2.5#PBF LS-8 LS8 H 05-08-1852 Yes
LTC6655BHLS8-4.096#PBF LS-8 LS8 H 05-08-1852 Yes
LTC6655BHLS8-5#PBF LS-8 LS8 H 05-08-1852 Yes
LTC6655BHMS8-1.25#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-1.25#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-2.048#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-2.048#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-2.5#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-2.5#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-3.3#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-3.3#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-3#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-3#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-4.096#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-4.096#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-5#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655BHMS8-5#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHLS8-2.5#PBF LS-8 LS8 H 05-08-1852 Yes
LTC6655CHLS8-4.096#PBF LS-8 LS8 H 05-08-1852 Yes
LTC6655CHLS8-5#PBF LS-8 LS8 H 05-08-1852 Yes
LTC6655CHMS8-1.25#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-1.25#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-2.048#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-2.048#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-2.5#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-2.5#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-3.3#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-3.3#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-3#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-3#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-4.096#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-4.096#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-5#PBF MS-8 MS8 H 05-08-1660 Yes
LTC6655CHMS8-5#TRPBF MS-8 MS8 H 05-08-1660 Yes


LTC6655 Package Drawing
LTC6655 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
LTC6655BHLS8-2.5#PBF LS-8 H $9.74 $6.99 Yes
LTC6655BHLS8-4.096#PBF LS-8 H $9.74 $6.99 Yes
LTC6655BHLS8-5#PBF LS-8 H $9.74 $6.99 Yes
LTC6655BHMS8-1.25#PBF MS-8 H $8.02 $5.75 Yes
LTC6655BHMS8-1.25#TRPBF MS-8 H $8.08 $5.81 Yes
LTC6655BHMS8-2.048#PBF MS-8 H $8.02 $5.75 Yes
LTC6655BHMS8-2.048#TRPBF MS-8 H $8.08 $5.81 Yes
LTC6655BHMS8-2.5#PBF MS-8 H $8.02 $5.75 Yes
LTC6655BHMS8-2.5#TRPBF MS-8 H $8.08 $5.81 Yes
LTC6655BHMS8-3.3#PBF MS-8 H $8.02 $5.75 Yes
LTC6655BHMS8-3.3#TRPBF MS-8 H $8.08 $5.81 Yes
LTC6655BHMS8-3#PBF MS-8 H $8.02 $5.75 Yes
LTC6655BHMS8-3#TRPBF MS-8 H $8.08 $5.81 Yes
LTC6655BHMS8-4.096#PBF MS-8 H $8.02 $5.75 Yes
LTC6655BHMS8-4.096#TRPBF MS-8 H $8.08 $5.81 Yes
LTC6655BHMS8-5#PBF MS-8 H $8.02 $5.75 Yes
LTC6655BHMS8-5#TRPBF MS-8 H $8.08 $5.81 Yes
LTC6655CHLS8-2.5#PBF LS-8 H $6.67 $4.79 Yes
LTC6655CHLS8-4.096#PBF LS-8 H $6.67 $4.79 Yes
LTC6655CHLS8-5#PBF LS-8 H $6.67 $4.79 Yes
LTC6655CHMS8-1.25#PBF MS-8 H $5.02 $3.60 Yes
LTC6655CHMS8-1.25#TRPBF MS-8 H $5.08 $3.66 Yes
LTC6655CHMS8-2.048#PBF MS-8 H $5.02 $3.60 Yes
LTC6655CHMS8-2.048#TRPBF MS-8 H $5.08 $3.66 Yes
LTC6655CHMS8-2.5#PBF MS-8 H $5.02 $3.60 Yes
LTC6655CHMS8-2.5#TRPBF MS-8 H $5.08 $3.66 Yes
LTC6655CHMS8-3.3#PBF MS-8 H $5.02 $3.60 Yes
LTC6655CHMS8-3.3#TRPBF MS-8 H $5.08 $3.66 Yes
LTC6655CHMS8-3#PBF MS-8 H $5.02 $3.60 Yes
LTC6655CHMS8-3#TRPBF MS-8 H $5.08 $3.66 Yes
LTC6655CHMS8-4.096#PBF MS-8 H $5.02 $3.60 Yes
LTC6655CHMS8-4.096#TRPBF MS-8 H $5.08 $3.66 Yes
LTC6655CHMS8-5#PBF MS-8 H $5.02 $3.60 Yes
LTC6655CHMS8-5#TRPBF MS-8 H $5.08 $3.66 Yes
Buy NowRequest Samples
* 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
DC1783A-A LTC2380-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 2Msps, SAR ADC with 96dB SNR. Req DC718 or DC2026 $150.00
DC1783A-B LTC2378-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 1Msps, SAR ADC with 97dB SNR. Req DC718 or DC2026 $150.00
DC1783A-C LTC2377-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 500ksps, SAR ADC with 97dB SNR. Req DC718 or DC2026 $150.00
DC1783A-D LTC2376-16 with LTC6655-5/LT6350 Demo Board | 16-Bit, 250ksps, SAR ADC with 97dB SNR. Req DC718 or DC2026 $150.00
DC1783A-E LTC2379-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 1.6Msps, SAR ADC with 101dB SNR. Req DC718 or DC2026 $150.00
DC1783A-F LTC2378-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 1Msps, SAR ADC with 102dB SNR. Req DC718 or DC2026 $150.00
DC1783A-G LTC2377-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 500ksps, SAR ADC with 102dB SNR. Req DC718 or DC2026 $150.00
DC1783A-H LTC2376-18 with LTC6655-5/LT6350 Demo Board | 18-Bit, 250ksps, SAR ADC with 102dB SNR. Req DC718 or DC2026 $150.00
DC1805A-A LTC6362 with 2Msps 16-bit LTC2380-16 Demo Board | SAR ADC, LTC6655-5. Req DC718 or DC2026 $150.00
DC1805A-B LTC6362 with 1Msps 16-bit LTC2378-16 Demo Board | SAR ADC, LTC6655-5. Req DC718 or DC2026 $150.00
DC1805A-C LTC6362 with 500ksps 16-bit LTC2377-16 Demo Board | SAR ADC, LTC6655-5. Req DC718 or DC2026 $150.00
DC1805A-D LTC6362 with 250ksps 16-bit LTC2376-16 Demo Board | SAR ADC, LTC6655-5. Req DC718 or DC2026 $150.00
DC1805A-E LTC6362 with 1.6Msps 18-bit LTC2379-18 Demo Board | SAR ADC, LTC6655-5. Req DC718 or DC2026 $150.00
DC1805A-F LTC6362 with 1Msps 18-bit LTC2378-18 Demo Board | SAR ADC, LTC6655-5. Req DC718 or DC2026 $150.00
DC1805A-G LTC6362 with 500ksps 18-bit LTC2377-18 Demo Board | SAR ADC, LTC6655-5. Req DC718 or DC2026 $150.00
DC1805A-H LTC6362 with 250ksps 18-bit LTC2376-18 SAR ADC, LTC6655-5. Req DC718 or DC2026 $150.00
DC1813A-A LTC2370-16 with LTC6655-5/LT6202 Demo Board | 16-Bit, 2Msps, Pseudo-Differential Unipolar SAR ADC with 94dB SNR. Req DC718 or DC590 $150.00
DC1813A-B LTC2368-16 with LTC6655-5/LT6202 Demo Board | 16-Bit, 1Msps, Pseudo-Differential Unipolar SAR ADC with 94.7dB SNR. Req DC718 or DC590 $150.00
DC1813A-C LTC2367-16 with LTC6655-5/LT6202 Demo Board |16-Bit, 500ksps, Pseudo-Differential Unipolar SAR ADC with 94.7dB SNR. Req DC718 or DC590 $150.00
DC1813A-D LTC2364-16 with LTC6655-5/LT6202 Demo Board | 16-Bit, 250ksps, Pseudo-Differential Unipolar SAR ADC with 94.7dB SNR. Req DC718 or DC590 $150.00
DC1813A-E LTC2369-18 with LTC6655-5/LT6202 Demo Board | 18-Bit, 1.6Msps, Pseudo-Differential Unipolar SAR ADC with 96.5dB SNR. Req DC718 or DC590 $150.00
DC1813A-F LTC2368-18 with LTC6655-5/LT6202 Demo Board |18-Bit, 1Msps, Pseudo-Differential Unipolar SAR ADC with 97dB SNR. Req DC718 or DC590 $150.00
DC1813A-G LTC2367-18 with LTC6655-5/LT6202 Demo Board | 18-Bit, 500ksps, Pseudo-Differential Unipolar SAR ADC with 97dB SNR. Req DC718 or DC590 $150.00
DC1813A-H LTC2364-18 with LTC6655-5/LT6202 Demo Board | 18-Bit, 250ksps, Pseudo-Differential Unipolar SAR ADC with 97dB SNR. Req DC718 or DC590 $150.00
DC1826A-A LTC2389-18 with LTC6655/LT6201, 18-Bit, 2.5Msps, Serial/Parallel SAR ADC with 99.8dB SNR. Req DC718 $150.00
DC1826A-E LTC2389-16 with LTC6655/LT6201, 16-Bit, 2.5Msps, Serial/Parallel SAR ADC with 96dB SNR. Req DC718 $150.00
DC1925A-A LTC2378-20 Demo Board | 20-Bit, 1Msps, SAR ADC with 104dB SNR. Req DC2026 $200.00
DC1925A-B LTC2377-20 Demo Board | 20-Bit, 500ksps, SAR ADC with 104dB SNR. Req DC2026 $200.00
DC1925A-C LTC2376-20 Demo Board | 20-Bit, 250ksps, SAR ADC with 104dB SNR. Req DC2026 $200.00
DC2095A-A LTC6655BHLS8-2.5V Demo Board | Ultra Low Noise, 2.5V Precision Voltage Reference in Ceramic Package $25.00
DC2095A-B LTC6655BHLS8-4V Demo Board | Ultra Low Noise, 4.096V Precision Voltage Reference in Ceramic Package $25.00
DC2095A-C LTC6655BHLS8-5V Demo Board | Ultra Low Noise, 5V Precision Voltage Reference in Ceramic Package $25.00
Buy Now

Companion Boards

Part Number Description Price Documentation
DC2026C Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform $75.00
DC718C USB Data Acquisition Controller, for PScope Evaluation Kits (<135Mbps) $300.00
DC1075A Clock Divider board $50.00
DC590B Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards $50.00
DC890B USB Data Acquisition Controller, for PScope Evaluation Kits (up to 250Mbps, CMOS/LVDS) $300.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • Instrumentation and Test Equipment
  • High Resolution Data Acquisition Systems
  • Weigh Scales
  • Precision Battery Monitors
  • Precision Regulators
  • Medical Equipment

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice IV:
LTC6655-1.25
LTC6655-2.048
LTC6655-2.5
LTC6655-3
LTC6655-3.3
LTC6655-4.096
LTC6655-5

Technical Support