Applications
The AD8641/AD8642/AD8643 are low power, precision JFET input amplifiers featuring extremely low input bias current and rail-to-rail output. The ability to swing nearly rail-to-rail at the input and rail-to-rail at the output enables designers to buffer CMOS DACs, ASICs, and other wide output swing devices in single-supply systems. The outputs remain stable with capacitive loads of more than 500 pF.
The AD8641/AD8642/AD8643 are suitable for applications utilizing multichannel boards that require low power to manage heat. Other applications include photodiodes, ATE reference level drivers, battery management, and industrial controls.
The AD8641/AD8642/AD8643 are fully specified over the extended industrial temperature range of –40°C to +125°C. The AD8641 is available in 5-lead SC70 and 8-lead SOIC lead-free packages. The AD8642 is available in 8-lead MSOP and 8-lead SOIC lead-free packages. The AD8643 is available in 14-lead SOIC and 16-lead, 3 mm × 3 mm, LFCSP lead-free packages.
Features and Benefits | Amplifiers
SPICE Models |
| Document | note |
| AD8641/AD8642/AD8643: Low Power, Rail-to-Rail Output, Precision JFET Amplifiers Data Sheet (Rev. F) | PDF 315.28 K |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD8642ARMZ Production | 8 ld SOIC | OTH 50 | -40 to 125C | 2.93 | 2.35 | Y |
| AD8642ARMZ-REEL Production | 8 ld MSOP | REEL 3000 | -40 to 125C | 2.93 | 2.35 | Y |
| AD8642ARZ Production | 8 ld SOIC | OTH 98 | -40 to 125C | 2.93 | 2.35 | Y |
| AD8642ARZ-REEL Production | 8 ld SOIC | REEL 2500 | -40 to 125C | 0 | 2.35 | Y |
| AD8642ARZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 125C | 0 | 2.35 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| EVAL-PRAOPAMP-2CPZ | Dual CP-8 lead LFCSP Evaluation Board | 20.19 | Y |
| EVAL-PRAOPAMP-2RMZ | Dual RM-8 lead MSOP Evaluation Board | 20.19 | Y |
| EVAL-PRAOPAMP-2RZ | Dual R-8 lead SOIC Evaluation Board | 20.19 | Y |
