Purchase LT1491, In-stock LT1491 From SeekIC.
MFG:LT
Part Number: LT1491
MFG: LT
Description: The dual LT®1490 and quad LT1491 op amps operate on allsingle and split supplies with a...
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LT1491
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Suppliers
DataSheet
General Description
LT1491 General Description
The dual LT®1490 and quad LT1491 op amps operate on allsingle and split supplies with a total voltage of 2V to 44Vdrawing only 40µA of quiescent current per amplifier. Theseamplifiers are reverse supply protected; they draw no currentfor reverse supply up to 18V. The input range of the LT1490/LT1491 includes both supplies and the output swings to bothsupplies. Unlike most micropower op amps, the LT1490/LT1491 can drive heavy loads; their rail-to-rail outputs drive20mA. The LT1490/LT1491 are unity-gain stable and drive allcapacitive loads up to 10,000pF when optional 0.22µF and150Ω compensation is used.
The LT1490/LT1491 have a unique input stage that oper-ates and remains high impedance when above the positivesupply. The inputs take 44V both differential and commonmode even when operating on a 3V supply. Built-in resis-tors protect the inputs for faults below the negative supplyup to 22V.
There is no phase reversal of the output for inputs22V below V or 44V above V, independent of V+.
The LT1490 dual op amp is available in the 8-pin SO andPDIP packages. The quad LT1491 is available in the 14-pinSO and PDIP packages.
LT1491 Maximum Ratings
Junction Temperature ........................................... 150°C
Specified Temperature Range (Note 2) .. 40°C to 85°C
Storage Temperature Range ................65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
Total Supply Voltage (V+ to V) ................................ 44V
Input Differential Voltage ........................................... 44V
Input Current ........................................................ ±25mA
Output Short-Circuit Duration (Note 1) .............Continuous
Operating Temperature Range ............... 40°C to 85°C
Specified Temperature Range (Note 2) .. 40°C to 85°C
Storage Temperature Range ................65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
Total Supply Voltage (V+ to V) ................................ 44V
Input Differential Voltage ........................................... 44V
Input Current ........................................................ ±25mA
Output Short-Circuit Duration (Note 1) .............Continuous
Operating Temperature Range ............... 40°C to 85°C
LT1491 Features
Rail-to-Rail Input and Output
Single Supply Input Range: 0.4V to 44V
Micropower: 50µA/Amplifier Max
Specified on 3V, 5V and ±15V Supplies
High Output Current: 20mA
Output Drives 10,000pF with Output Compensation
Reverse Battery Protection to 18V
No Supply Sequencing Problems
High Voltage Gain: 1500V/mV
High CMRR: 98dB
No Phase Reversal
Gain Bandwidth Product: 200kHz
Single Supply Input Range: 0.4V to 44V
Micropower: 50µA/Amplifier Max
Specified on 3V, 5V and ±15V Supplies
High Output Current: 20mA
Output Drives 10,000pF with Output Compensation
Reverse Battery Protection to 18V
No Supply Sequencing Problems
High Voltage Gain: 1500V/mV
High CMRR: 98dB
No Phase Reversal
Gain Bandwidth Product: 200kHz
LT1491 Typical Application
Battery- or Solar-Powered SystemsPortable InstrumentationSensor Conditioning
Supply Current Sensing
Battery Monitoring
Micropower Active Filters
4mA to 20mA Transmitters
Supply Current Sensing
Battery Monitoring
Micropower Active Filters
4mA to 20mA Transmitters
LT1491 Connection Diagram
LT1491
PDF/DataSheet Download
- Datasheet: LT1491
- File Size: 319667 KB
- Manufacturer: LINER [Linear Technology]
- Click here to Download
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LT1491 Relative Products
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