LT1637 - 1.1MHz, 0.4V/us Over-The-Top Micropower, Rail-To-Rail Input and Output Op Amp

Features

  • Operates with Inputs Above V +
  • Rail-to-Rail Input and Output
  • Micropower: 250µA Supply Current Max
  • Operating Temperature Range: - 55°C to 125°C
  • Gain-Bandwidth Product: 1.1MHz
  • Slew Rate: 0.4V/µs
  • Low Input Offset Voltage: 350µV Max
  • Single Supply Input Range: - 0.4V to 44V
  • High Output Current: 25mA Min
  • Specified on 3V, 5V and ±15V Supplies
  • Output Shutdown
  • Output Drives 4700pF with Output Compensation
  • Reverse Battery Protection to 25V
  • High Voltage Gain: 800V/mV
  • High CMRR: 110dB
  • Available in 8-Lead MSOP, PDIP and SO Packages; and a Tiny (3mm × 3mm × 0.8mm) DFN Package
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LT1637 Typical Application
LT1637 Typical Application

Description

The LT1637 is a rugged op amp that operates on all single and split supplies with a total voltage of 2.7V to 44V. The LT1637 has a gain-bandwidth product of 1.1MHz while drawing less than 250µA of quiescent current. The LT1637 can be shut down, making the output high impedance and reducing the quiescent current to only 3µA. The LT1637 is reverse supply protected: it draws virtually no current for reverse supply up to 25V. The input range of the LT1637 includes both supplies and the output swings to both supplies. Unlike most micropower op amps, the LT1637 can drive heavy loads; its rail-to-rail output drives 25mA. The LT1637 is unity-gain stable into all capacitive loads up to 4700pF when optional 0.22µF and 150 Ohm compensation is used.

The LT1637 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. 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 LT1637 op amp is available in the 8-pin MSOP, PDIP and SO packages. For space limited applications, the LT1637 is available in a 3mm × 3mm × 0.8mm dual fine pitch leadless package (DFN).

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
LT1637CDD#PBF 3x3 DFN-8 DD C 05-08-1698 Yes
LT1637CDD#TRPBF 3x3 DFN-8 DD C 05-08-1698 Yes
LT1637CMS8#PBF MS-8 MS8 C 05-08-1660 Yes
LT1637CMS8#TRPBF MS-8 MS8 C 05-08-1660 Yes
LT1637CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1637CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1637CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1637HS8#PBF SO-8 S8 H 05-08-1610 (S8) Yes
LT1637HS8#TRPBF SO-8 S8 H 05-08-1610 (S8) Yes
LT1637IDD#PBF 3x3 DFN-8 DD I 05-08-1698 Yes
LT1637IDD#TRPBF 3x3 DFN-8 DD I 05-08-1698 Yes
LT1637IMS8#PBF MS-8 MS8 I 05-08-1660 Yes
LT1637IMS8#TRPBF MS-8 MS8 I 05-08-1660 Yes
LT1637IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LT1637IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1637IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1637MPS8 SO-8 S8 MP 05-08-1610 (S8) No
LT1637MPS8#PBF SO-8 S8 MP 05-08-1610 (S8) Yes
LT1637MPS8#TR SO-8 S8 MP 05-08-1610 (S8) No
LT1637MPS8#TRPBF SO-8 S8 MP 05-08-1610 (S8) Yes


LT1637 Package Drawing
LT1637 Package Drawing
LT1637 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
LT1637CDD#PBF 3x3 DFN-8 C $2.59 $1.80 Yes
LT1637CDD#TRPBF 3x3 DFN-8 C $1.85 Yes
LT1637CMS8#PBF MS-8 C $2.00 $1.70 Yes
LT1637CMS8#TRPBF MS-8 C $1.76 Yes
LT1637CN8#PBF N-8 C $1.70 $1.45 Yes
LT1637CS8#PBF SO-8 C $1.75 $1.50 Yes
LT1637CS8#TRPBF SO-8 C $1.56 Yes
LT1637HS8#PBF SO-8 H $2.02 $1.75 Yes
LT1637HS8#TRPBF SO-8 H $1.81 Yes
LT1637IDD#PBF 3x3 DFN-8 I $3.11 $2.16 Yes
LT1637IDD#TRPBF 3x3 DFN-8 I $2.21 Yes
LT1637IMS8#PBF MS-8 I $2.67 $1.87 Yes
LT1637IMS8#TRPBF MS-8 I $1.93 Yes
LT1637IN8#PBF N-8 I $1.90 $1.60 Yes
LT1637IS8#PBF SO-8 I $1.95 $1.65 Yes
LT1637IS8#TRPBF SO-8 I $1.71 Yes
LT1637MPS8 SO-8 MP $6.47 $4.58 No
LT1637MPS8#PBF SO-8 MP $6.47 $4.58 Yes
LT1637MPS8#TR SO-8 MP $6.47 $4.58 No
LT1637MPS8#TRPBF SO-8 MP $6.47 $4.58 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
DC417B DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp $25.00
DC593A LT1637CDD | 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

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT1637HS8#PBF SO-8 H $2.02 $1.75 Yes
LT1637HS8#TRPBF SO-8 H $1.81 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.

Applications

  • Battery or Solar Powered Systems:
    Portable Instrumentation
    Sensor Conditioning
  • Supply Current Sensing
  • Battery Monitoring
  • MUX Amplifiers
  • 4mA to 25mA Transmitters

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