LT1019 - Precision Reference


  • Tight Initial Output Voltage: <0.05%
  • Ultralow Drift: 3ppm/°C Typical
  • Series or Shunt Operation
  • Curvature Corrected
  • Ultrahigh Line Rejection: ≈0.5ppm/V
  • Low Output Impedance: ≈0.02 Ohm
  • Plug-In Replacement for Present References
  • Available at 2.5V, 4.5V, 5V, and 10V
  • 100% Noise Tested
  • Temperature Output
  • Industrial Temperature Range in SO-8
  • Available in 8-Lead N8 and S8 Packages

Typical Application

LT1019 Typical Application
LT1019 Typical Application


The LT1019 is a third generation bandgap voltage reference utilizing thin film technology and a greatly improved curvature correction technique. Wafer level trimming of both reference and output voltage combines to produce very low TC and tight initial output voltage tolerance.

The LT1019 can both sink and source up to 10mA and can be used in either the series or shunt mode, allowing the reference to operate with positive or negative output voltages without external components. Minimum input/ output voltage is less than 1V in the series mode, providing improved tolerance of low line conditions and excellent line regulation.

The LT1019 is available in four voltages: 2.5V, 4.5V, 5V and 10V. It is a direct replacement for most bandgap references presently available including AD580, AD581, REF-01, REF-02, MC1400, MC1404 and LM168.


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
LT1019ACN8-10#PBF N-8 N C 05-08-1510 (N8) Yes
LT1019ACN8-2.5#PBF N-8 N C 05-08-1510 (N8) Yes
LT1019ACN8-4.5#PBF N-8 N C 05-08-1510 (N8) Yes
LT1019ACN8-5#PBF N-8 N C 05-08-1510 (N8) Yes
LT1019ACS8-2.5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019ACS8-2.5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019ACS8-5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019ACS8-5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019AIS8-2.5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1019AIS8-2.5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1019AIS8-5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1019AIS8-5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1019CN8-10#PBF N-8 N C 05-08-1510 (N8) Yes
LT1019CN8-2.5#PBF N-8 N C 05-08-1510 (N8) Yes
LT1019CN8-4.5#PBF N-8 N C 05-08-1510 (N8) Yes
LT1019CN8-5#PBF N-8 N C 05-08-1510 (N8) Yes
LT1019CS8-10#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019CS8-10#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019CS8-2.5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019CS8-2.5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019CS8-4.5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019CS8-4.5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019CS8-5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019CS8-5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1019IN8-10#PBF N-8 N I 05-08-1510 (N8) Yes
LT1019IN8-2.5#PBF N-8 N I 05-08-1510 (N8) Yes
LT1019IN8-4.5#PBF N-8 N I 05-08-1510 (N8) Yes
LT1019IN8-5#PBF N-8 N I 05-08-1510 (N8) Yes
LT1019IS8-2.5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1019IS8-2.5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1019IS8-5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1019IS8-5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes

LT1019 Package Drawing
LT1019 Package Drawing
LT1019 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
LT1019ACN8-10#PBF N-8 C $7.50 $6.25 Yes
LT1019ACN8-2.5#PBF N-8 C $7.50 $6.25 Yes
LT1019ACN8-4.5#PBF N-8 C $7.50 $6.25 Yes
LT1019ACN8-5#PBF N-8 C $7.50 $6.25 Yes
LT1019ACS8-2.5#PBF SO-8 C $7.50 $5.40 Yes
LT1019ACS8-2.5#TRPBF SO-8 C $5.46 Yes
LT1019ACS8-5#PBF SO-8 C $7.50 $5.40 Yes
LT1019ACS8-5#TRPBF SO-8 C $5.46 Yes
LT1019AIS8-2.5#PBF SO-8 I $6.60 $5.65 Yes
LT1019AIS8-2.5#TRPBF SO-8 I $5.71 Yes
LT1019AIS8-5#PBF SO-8 I $6.60 $5.65 Yes
LT1019AIS8-5#TRPBF SO-8 I $5.71 Yes
LT1019CN8-10#PBF N-8 C $4.58 $3.70 Yes
LT1019CN8-2.5#PBF N-8 C $4.58 $3.70 Yes
LT1019CN8-4.5#PBF N-8 C $4.58 $3.70 Yes
LT1019CN8-5#PBF N-8 C $4.58 $3.70 Yes
LT1019CS8-10#PBF SO-8 C $5.58 $4.65 Yes
LT1019CS8-10#TRPBF SO-8 C $4.71 Yes
LT1019CS8-2.5#PBF SO-8 C $5.58 $4.65 Yes
LT1019CS8-2.5#TRPBF SO-8 C $4.71 Yes
LT1019CS8-4.5#PBF SO-8 C $5.58 $4.65 Yes
LT1019CS8-4.5#TRPBF SO-8 C $4.71 Yes
LT1019CS8-5#PBF SO-8 C $5.58 $4.65 Yes
LT1019CS8-5#TRPBF SO-8 C $4.71 Yes
LT1019IN8-10#PBF N-8 I $5.75 $4.75 Yes
LT1019IN8-2.5#PBF N-8 I $5.75 $4.75 Yes
LT1019IN8-4.5#PBF N-8 I $5.75 $4.75 Yes
LT1019IN8-5#PBF N-8 I $5.75 $4.75 Yes
LT1019IS8-2.5#PBF SO-8 I $6.34 $4.85 Yes
LT1019IS8-2.5#TRPBF SO-8 I $4.91 Yes
LT1019IS8-5#PBF SO-8 I $6.34 $4.85 Yes
LT1019IS8-5#TRPBF SO-8 I $4.91 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.

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  • Negative Shunt References
  • A/D and D/A Converters
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