The EL8171 and EL8172 are micropower instrumentation amplifiers optimized for single supply operation over the +2.4V to +5.5V range. Inputs and outputs can operate rail-torail. As with all instrumentation amplifiers, a pair of inputs provide very high common-mode rejection and are completely independent from a pair of feedback terminals. The feedback terminals allow zero input to be translated to any output offset, including ground. A feedback divider controls the overall gain of the amplifier.
The EL8172 is compensated for a gain of 100 or more, and the EL8171 is compensated for a gain of 10 or more. The EL8171 and EL8172 have PMOS input devices that provide sub-nA input bias currents.
The amplifiers can be operated from one lithium cell or two Ni-Cd batteries. The EL8171 and EL8172 input range goes from below ground to slightly above positive rail. The output stage swings completely to ground (ground sensing) or positive supply - no pull-up or pull-down resistors are needed.
| 芯片型号 | 产品状态 | 温度范围 | 封装尺寸图 | 潮湿敏感度等级MSL | 美元价格US $ |
| EL8172FSZ | 量产 | Full-Range Ind | 8 Ld SOIC | 3 | 1.14 |
| EL8172FSZ-T7 | 量产 | Full-Range Ind | 8 Ld SOIC T+R | 3 | 1.14 |
| EL8172IS | 停产 | 工业级 | 8 Ld SOIC | 1 | 价格录入中 |
| EL8172IS-T13 | 停产 | 工业级 | 8 Ld SOIC T+R | 1 | 价格录入中 |
| EL8172IS-T7 | 停产 | 工业级 | 8 Ld SOIC T+R | 1 | 价格录入中 |
| EL8172ISZ | 停产 | 工业级 | 8 Ld SOIC | 3 | 价格录入中 |
| EL8172ISZ-T13 | 停产 | 工业级 | 8 Ld SOIC T+R | 3 | 价格录入中 |
| EL8172ISZ-T7 | 停产 | 工业级 | 8 Ld SOIC T+R | 3 | 价格录入中 |