| Part No.： | LT1491 |
| Page： | 12 Pages |
| Size： | 255 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 3 |
| Update Time： | 2023-12-04 16:13:04 |
| DataSheet： | Download |
| Part No. | Packing | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LT1491CN#PBF | Tube | 25 | 1 | 14 | 0°C ~ 70°C | 14-Lead PDIP | ||
| LT1491CN#TRPBF | Reel | 1 | 14 | 0°C ~ 70°C | 14-Lead PDIP | |||
| LT1491CN#TRMPBF | Reel | 1 | 14 | 0°C ~ 70°C | 14-Lead PDIP | |||
| LT1491CS#PBF | Tube | 55 | 1 | 14 | 0°C ~ 70°C | 14-Lead SOIC | ||
| LT1491CS#TRPBF | Reel | 2500 | 1 | 14 | 0°C ~ 70°C | 14-Lead SOIC | ||
| LT1491CS#TRMPBF | Reel | 500 | 1 | 14 | 0°C ~ 70°C | 14-Lead SOIC | ||
| LT1491IS#PBF | Tube | 55 | 1 | 14 | -40°C ~ 85°C | 14-Lead SOIC | ||
| LT1491IS#TRPBF | Reel | 2500 | 1 | 14 | -40°C ~ 85°C | 14-Lead SOIC | ||
| LT1491IS#TRMPBF | Reel | 500 | 1 | 14 | -40°C ~ 85°C | 14-Lead SOIC |
The quad LT1491 op amps operate on all single and split supplies with a total voltage of 2V to 44V drawing only 40µA of quiescent current per amplifier. These amplifiers are reverse supply protected; they draw no current for reverse supply up to 18V. The input range of the LT1491 includes both supplies and the output swings to both supplies. Unlike most micropower op amps, the LT1491 can drive heavy loads; their rail-to-rail outputs drive 20mA. The LT1491 are unity-gain stable and drive all capacitive loads up to 10,000pF when optional 0.22µF and 150Ω compensation is used.
The LT1490/LT1491 have 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 22V below V– or 44V above V–, independent of V+.
The quad LT1491 is available in the 14-pin SO and PDIP packages.
