| Part No.： | LT1991 |
| Page： | 28 Pages |
| Size： | 727 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 3 |
| Update Time： | 2023-11-13 14:24:10 |
| DataSheet： | Download |
| Part No. | Packing | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LT1991CDD#PBF | Tube | 121 | LBMM | 1 | 10 | 0°C ~ 70°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991CDD#TRPBF | Reel | 2500 | LBMM | 1 | 10 | 0°C ~ 70°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991CDD#TRMPBF | Reel | 500 | LBMM | 1 | 10 | 0°C ~ 70°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991ACDD#PBF | Tube | 121 | LBMM | 1 | 10 | 0°C ~ 70°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991ACDD#TRPBF | Reel | 2500 | LBMM | 1 | 10 | 0°C ~ 70°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991ACDD#TRMPBF | Reel | 500 | LBMM | 1 | 10 | 0°C ~ 70°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991IDD#PBF | Tube | 121 | LBMM | 1 | 10 | -40°C ~ 85°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991IDD#TRPBF | Reel | 2500 | LBMM | 1 | 10 | -40°C ~ 85°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991IDD#TRMPBF | Reel | 500 | LBMM | 1 | 10 | -40°C ~ 85°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991AIDD#PBF | Tube | 121 | LBMM | 1 | 10 | -40°C ~ 85°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991AIDD#TRPBF | Reel | 2500 | LBMM | 1 | 10 | -40°C ~ 85°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991AIDD#TRMPBF | Reel | 500 | LBMM | 1 | 10 | -40°C ~ 85°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991HDD#PBF | Tube | 121 | LBMM | 1 | 10 | -40°C ~ 125°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991HDD#TRPBF | Reel | 2500 | LBMM | 1 | 10 | -40°C ~ 125°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991HDD#TRMPBF | Reel | 500 | LBMM | 1 | 10 | -40°C ~ 125°C | 10-Lead (3mm × 3mm) Plastic DFN | |
| LT1991CMS#PBF | Tube | 50 | LTQD | 1 | 10 | 0°C ~ 70°C | 10-Lead Plastic MSOP | |
| LT1991CMS#TRPBF | Reel | 2500 | LTQD | 1 | 10 | 0°C ~ 70°C | 10-Lead Plastic MSOP | |
| LT1991CMS#TRMPBF | Reel | 500 | LTQD | 1 | 10 | 0°C ~ 70°C | 10-Lead Plastic MSOP | |
| LT1991ACMS#PBF | Tube | 50 | LTQD | 1 | 10 | 0°C ~ 70°C | 10-Lead Plastic MSOP | |
| LT1991ACMS#TRPBF | Reel | 2500 | LTQD | 1 | 10 | 0°C ~ 70°C | 10-Lead Plastic MSOP | |
| LT1991ACMS#TRMPBF | Reel | 500 | LTQD | 1 | 10 | 0°C ~ 70°C | 10-Lead Plastic MSOP | |
| LT1991IMS#PBF | Tube | 50 | LTQD | 1 | 10 | -40°C ~ 85°C | 10-Lead Plastic MSOP | |
| LT1991IMS#TRPBF | Reel | 2500 | LTQD | 1 | 10 | -40°C ~ 85°C | 10-Lead Plastic MSOP | |
| LT1991IMS#TRMPBF | Reel | 500 | LTQD | 1 | 10 | -40°C ~ 85°C | 10-Lead Plastic MSOP | |
| LT1991AIMS#PBF | Tube | 50 | LTQD | 1 | 10 | -40°C ~ 85°C | 10-Lead Plastic MSOP | |
| LT1991AIMS#TRPBF | Reel | 2500 | LTQD | 1 | 10 | -40°C ~ 85°C | 10-Lead Plastic MSOP | |
| LT1991AIMS#TRMPBF | Reel | 500 | LTQD | 1 | 10 | -40°C ~ 85°C | 10-Lead Plastic MSOP | |
| LT1991HMS#PBF | Tube | 50 | LTQD | 1 | 10 | -40°C ~ 125°C | 10-Lead Plastic MSOP | |
| LT1991HMS#TRPBF | Reel | 2500 | LTQD | 1 | 10 | -40°C ~ 125°C | 10-Lead Plastic MSOP | |
| LT1991HMS#TRMPBF | Reel | 500 | LTQD | 1 | 10 | -40°C ~ 125°C | 10-Lead Plastic MSOP |
The LT1991 combines a precision operational amplifier with eight precision resistors to form a one-chip solution for accurately amplifying voltages. Gains from -13 to 14 with a gain accuracy of 0.04% can be achieved using no external components. The device is particularly well suited for use as a difference amplifier, where the excellent resistor matching results in a common mode rejection ratio of greater than 75dB.
The amplifier features a 50µV maximum input offset voltage and a gain bandwidth product of 560kHz. The device operates from any supply voltage from 2.7V to 36V and draws only 100µA supply current on a 5V supply. The output swings to within 40mV of either supply rail.
The resistors have excellent matching, 0.04% over temperature for the 450k resistors. The matching temperature coefficent is guaranteed less than 3ppm/°C. The resistors are extremely linear with voltage, resulting in a gain nonlinearity of less than 10ppm.
The LT1991 is fully specified at 5V and ±15V supplies and from -40°C to 85°C. The device is available in space saving 10-lead MSOP and low profile (0.8mm) 3mm × 3mm DFN packages.
