Signal Conditioning Operational Amplifiers (Op Amps) Precision Amplifiers
Signal Conditioning Operational Amplifiers (Op Amps) Low Power Amplifiers
 Space & Harsh Environment Extended Temperature Plastic (H & MP) Extended Temperature (H & MP) Op Amps

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

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

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

DFN-8,DIP-8,MS-8,SO-8

LT1637 Package Drawing
LT1637 Package Drawing
LT1637 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT1637CDD DFN 8 C $2.59 $1.80 View
LT1637CDD#PBF DFN 8 C $2.59 $1.80 View
LT1637CDD#TR DFN 8 C $1.85 View
LT1637CDD#TRPBF DFN 8 C $1.85 View
LT1637CMS8 MSOP 8 C $2.00 $1.70 View
LT1637CMS8#PBF MSOP 8 C $2.00 $1.70 View
LT1637CMS8#TR MSOP 8 C $1.76 View
LT1637CMS8#TRPBF MSOP 8 C $1.76 View
LT1637CN8 PDIP 8 C $1.70 $1.45 View
LT1637CN8#PBF PDIP 8 C $1.70 $1.45 View
LT1637CS8 SO 8 C $1.75 $1.50 View
LT1637CS8#PBF SO 8 C $1.75 $1.50 View
LT1637CS8#TR SO 8 C $1.56 View
LT1637CS8#TRPBF SO 8 C $1.56 View
LT1637HS8 SO 8 H $2.05 $1.75 View
LT1637HS8#PBF SO 8 H $2.02 $1.75 View
LT1637HS8#TR SO 8 H $1.81 View
LT1637HS8#TRPBF SO 8 H $1.81 View
LT1637IDD DFN 8 I $3.11 $2.16 View
LT1637IDD#PBF DFN 8 I $3.11 $2.16 View
LT1637IDD#TR DFN 8 I $2.21 View
LT1637IDD#TRPBF DFN 8 I $2.21 View
LT1637IMS8 MSOP 8 I $2.67 $1.87 View
LT1637IMS8#PBF MSOP 8 I $2.67 $1.87 View
LT1637IMS8#TR MSOP 8 I $1.93 View
LT1637IMS8#TRPBF MSOP 8 I $1.93 View
LT1637IN8 PDIP 8 I $1.90 $1.60 View
LT1637IN8#PBF PDIP 8 I $1.90 $1.60 View
LT1637IS8 SO 8 I $1.95 $1.65 View
LT1637IS8#PBF SO 8 I $1.95 $1.65 View
LT1637IS8#TR SO 8 I $1.71 View
LT1637IS8#TRPBF SO 8 I $1.71 View
LT1637MPS8 SO 8 MP View
LT1637MPS8#PBF SO 8 MP $6.47 $4.58 View
LT1637MPS8#TR SO 8 MP View
LT1637MPS8#TRPBF SO 8 MP $6.47 $4.58 View
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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
DC593A LT1637CDD | Over-The-Top, Micropower, Rail-to-Rail $50.00
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Click here to view our complete list of demo boards

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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