Signal Conditioning Voltage References Shunt Voltage References
Signal Conditioning Voltage References Micropower Voltage References

LT1634 - Micropower Precision Shunt Voltage Reference

Features

  • Initial Voltage Accuracy: 0.05%
  • Low Operating Current: 10μA
  • Low Drift: 10ppm/°C Max
  • Less Than 1Ω Dynamic Impedance
  • Both Commercial and Industrial Temperature Range Parts Are Available
  • Available in 1.25V, 2.5V, 4.096V and 5V in SO-8 and TO-92 Packages
  • 1.25V and 2.5V Available in MSOP Package

Typical Application

LT1634 Typical Application
LT1634 Typical Application

Description

The LT1634 is a micropower, precision, shunt voltage reference. The bandgap reference uses trimmed precision thin film resistors to achieve 0.05% initial voltage accuracy.Improved curvature correction technique guarantees10ppm/°C maximum temperature drift. Advances in design, processing and packaging techniques guarantee10µA operation and low temperature cycling hysteresis.The LT1634 does not require an output compensation capacitor, but is stable with capacitive loads. Low dynamic impedance makes the LT1634 reference easy to use from unregulated supplies.

The LT1634 reference can be used as a high performance upgrade to the LM185/LM385, LT1004 and LT1034 where lower power and guaranteed temperature drift is required.

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
LT1634ACS8-1.25#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634ACS8-1.25#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634ACS8-2.5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634ACS8-2.5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634ACS8-4.096#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634ACS8-4.096#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634ACS8-5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634ACS8-5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634AIS8-1.25#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634AIS8-1.25#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634AIS8-2.5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634AIS8-2.5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634AIS8-4.096#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634AIS8-4.096#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634AIS8-5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634AIS8-5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634BCMS8-1.25#PBF MS-8 MS8 C 05-08-1660 Yes
LT1634BCMS8-1.25#TRPBF MS-8 MS8 C 05-08-1660 Yes
LT1634BCMS8-2.5#PBF MS-8 MS8 C 05-08-1660 Yes
LT1634BCMS8-2.5#TRPBF MS-8 MS8 C 05-08-1660 Yes
LT1634BCS8-1.25#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634BCS8-1.25#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634BCS8-2.5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634BCS8-2.5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634BCS8-4.096#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634BCS8-4.096#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634BCS8-5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634BCS8-5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1634BIS8-1.25#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634BIS8-1.25#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634BIS8-2.5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634BIS8-2.5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634BIS8-4.096#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634BIS8-4.096#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634BIS8-5#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634BIS8-5#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1634CCZ-1.25#PBF TO-92 Z C 05-08-1410 Yes
LT1634CCZ-1.25#TRPBF TO-92 Z C 05-08-1410 Yes
LT1634CCZ-2.5#PBF TO-92 Z C 05-08-1410 Yes
LT1634CCZ-2.5#TRPBF TO-92 Z C 05-08-1410 Yes
LT1634CCZ-4.096#PBF TO-92 Z C 05-08-1410 Yes
LT1634CCZ-4.096#TRPBF TO-92 Z C 05-08-1410 Yes
LT1634CCZ-5#PBF TO-92 Z C 05-08-1410 Yes
LT1634CCZ-5#TRPBF TO-92 Z C 05-08-1410 Yes


LT1634 Package Drawing
LT1634 Package Drawing
LT1634 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
LT1634ACS8-1.25#PBF SO-8 C $5.10 $4.50 Yes
LT1634ACS8-1.25#TRPBF SO-8 C $4.56 Yes
LT1634ACS8-2.5#PBF SO-8 C $5.10 $4.50 Yes
LT1634ACS8-2.5#TRPBF SO-8 C $4.56 Yes
LT1634ACS8-4.096#PBF SO-8 C $5.10 $4.50 Yes
LT1634ACS8-4.096#TRPBF SO-8 C $4.56 Yes
LT1634ACS8-5#PBF SO-8 C $5.10 $4.50 Yes
LT1634ACS8-5#TRPBF SO-8 C $4.56 Yes
LT1634AIS8-1.25#PBF SO-8 I $5.70 $4.95 Yes
LT1634AIS8-1.25#TRPBF SO-8 I $5.01 Yes
LT1634AIS8-2.5#PBF SO-8 I $5.70 $4.95 Yes
LT1634AIS8-2.5#TRPBF SO-8 I $5.01 Yes
LT1634AIS8-4.096#PBF SO-8 I $5.70 $4.95 Yes
LT1634AIS8-4.096#TRPBF SO-8 I $5.01 Yes
LT1634AIS8-5#PBF SO-8 I $5.70 $4.95 Yes
LT1634AIS8-5#TRPBF SO-8 I $5.01 Yes
LT1634BCMS8-1.25#PBF MS-8 C $2.95 $2.60 Yes
LT1634BCMS8-1.25#TRPBF MS-8 C $2.66 Yes
LT1634BCMS8-2.5#PBF MS-8 C $2.95 $2.60 Yes
LT1634BCMS8-2.5#TRPBF MS-8 C $2.66 Yes
LT1634BCS8-1.25#PBF SO-8 C $2.75 $2.35 Yes
LT1634BCS8-1.25#TRPBF SO-8 C $2.41 Yes
LT1634BCS8-2.5#PBF SO-8 C $2.75 $2.35 Yes
LT1634BCS8-2.5#TRPBF SO-8 C $2.41 Yes
LT1634BCS8-4.096#PBF SO-8 C $2.75 $2.35 Yes
LT1634BCS8-4.096#TRPBF SO-8 C $2.41 Yes
LT1634BCS8-5#PBF SO-8 C $2.75 $2.35 Yes
LT1634BCS8-5#TRPBF SO-8 C $2.41 Yes
LT1634BIS8-1.25#PBF SO-8 I $3.35 $2.85 Yes
LT1634BIS8-1.25#TRPBF SO-8 I $2.91 Yes
LT1634BIS8-2.5#PBF SO-8 I $3.35 $2.85 Yes
LT1634BIS8-2.5#TRPBF SO-8 I $2.91 Yes
LT1634BIS8-4.096#PBF SO-8 I $3.35 $2.85 Yes
LT1634BIS8-4.096#TRPBF SO-8 I $2.91 Yes
LT1634BIS8-5#PBF SO-8 I $3.35 $2.85 Yes
LT1634BIS8-5#TRPBF SO-8 I $2.91 Yes
LT1634CCZ-1.25#PBF TO-92 C $2.50 $2.10 Yes
LT1634CCZ-1.25#TRPBF TO-92 C $2.16 Yes
LT1634CCZ-2.5#PBF TO-92 C $2.50 $2.10 Yes
LT1634CCZ-2.5#TRPBF TO-92 C $2.16 Yes
LT1634CCZ-4.096#PBF TO-92 C $2.50 $2.10 Yes
LT1634CCZ-4.096#TRPBF TO-92 C $2.16 Yes
LT1634CCZ-5#PBF TO-92 C $2.50 $2.10 Yes
LT1634CCZ-5#TRPBF TO-92 C $2.16 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.

Click here to view our complete list of demo boards

Applications

  • Portable Meters
  • Precision Regulators
  • A/D and D/A Converters
  • Calibrators

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Models for the following parts are available in LTspice:
LT1634-1.25
LT1634-2.5
LT1634-4.096
LT1634-5

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