LT1636 - Over-The-Top Micropower Rail-to-Rail Input and Output Op Amp


  • Rail-to-Rail Input and Output
  • Micropower: 50µA IQ, 44V Supply
  • Operating Temperature Range: - 40°C to 125°C
  • Over-The-Top®: Input Common Mode Range Extends 44V Above VEE, Independent of VCC
  • Low Input Offset Voltage: 225µV Max
  • Specified on 3V, 5V and ±15V Supplies
  • High Output Current: 18mA
  • Output Shutdown
  • Output Drives 10,000pF with Output Compensation
  • Reverse Battery Protection to 27V
  • High Voltage Gain: 2000V/mV
  • High CMRR: 110dB
  • 220kHz Gain-Bandwidth Product
  • 8-Lead DFN, MSOP, PDIP and SO Packages

Typical Application

LT1636 Typical Application
LT1636 Typical Application


The LT1636 op amp operates on all single and split supplies with a total voltage of 2.7V to 44V drawing less than 50µA of quiescent current. The LT1636 can be shut down, making the output high impedance and reducing the quiescent current to 4µA. The LT1636 has a unique input stage that operates and remains high impedance when above the positive supply. The inputs take 44V both differential and common mode, even when operating on a 3V supply. The output swings to both supplies. Unlike most micropower op amps, the LT1636 can drive heavy loads; its rail-to-rail output drives 18mA. The LT1636 is unity-gain stable into all capacitive loads up to 10,000pF when a 0.22µF and 150 Ohm compensation network is used.

The LT1636 is reverse supply protected: it draws no current for reverse supply up to 27V. Built-in resistors protect the inputs for faults below the negative supply up to 22V. There is no phase reversal of the output for inputs 5V below VEE or 44V above VEE, independent of VCC.

The LT1636 op amp is available in the 8-pin MSOP, PDIP and SO packages. For space limited applications the LT1636 available in a 3mm × 3mm × 0.8mm dual fine pitch leadless package (DFN).


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
LT1636CDD#PBF 3x3 DFN-8 DD C 05-08-1698 Yes
LT1636CDD#TRPBF 3x3 DFN-8 DD C 05-08-1698 Yes
LT1636CMS8#PBF MS-8 MS8 C 05-08-1660 Yes
LT1636CMS8#TRPBF MS-8 MS8 C 05-08-1660 Yes
LT1636CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1636CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1636CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1636HS8#PBF SO-8 S8 H 05-08-1610 (S8) Yes
LT1636HS8#TRPBF SO-8 S8 H 05-08-1610 (S8) Yes
LT1636IDD#PBF 3x3 DFN-8 DD I 05-08-1698 Yes
LT1636IDD#TRPBF 3x3 DFN-8 DD I 05-08-1698 Yes
LT1636IMS8#PBF MS-8 MS8 I 05-08-1660 Yes
LT1636IMS8#TRPBF MS-8 MS8 I 05-08-1660 Yes
LT1636IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LT1636IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1636IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes

LT1636 Package Drawing
LT1636 Package Drawing
LT1636 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
LT1636CDD#PBF 3x3 DFN-8 C $2.68 $1.95 Yes
LT1636CDD#TRPBF 3x3 DFN-8 C $2.00 Yes
LT1636CMS8#PBF MS-8 C $2.25 $1.85 Yes
LT1636CMS8#TRPBF MS-8 C $1.91 Yes
LT1636CN8#PBF N-8 C $1.70 $1.45 Yes
LT1636CS8#PBF SO-8 C $1.75 $1.50 Yes
LT1636CS8#TRPBF SO-8 C $1.56 Yes
LT1636HS8#PBF SO-8 H $2.15 $1.85 Yes
LT1636HS8#TRPBF SO-8 H $1.91 Yes
LT1636IDD#PBF 3x3 DFN-8 I $3.21 $2.34 Yes
LT1636IDD#TRPBF 3x3 DFN-8 I $2.39 Yes
LT1636IMS8#PBF MS-8 I $2.68 $1.90 Yes
LT1636IMS8#TRPBF MS-8 I $1.96 Yes
LT1636IN8#PBF N-8 I $1.95 $1.70 Yes
LT1636IS8#PBF SO-8 I $2.05 $1.75 Yes
LT1636IS8#TRPBF SO-8 I $1.81 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
DC417B DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp $25.00
DC592A LT1636CDD | Over-The-Top, Micropower Rail-to-Rail Input and Output Op Amp in DFN Package $50.00
Buy Now
Click here to view our complete list of demo boards


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