EL8171, EL8172 Micropower, Single Supply, Rail-to-Rail Input-Output Instrumentation Amplifiers
The EL8171 and EL8172 are micropower instrumentation amplifiers optimized for operation at 2.9V to 5V single supplies. Both devices feature rail-to-rail input and output capabilities, allowing them to be operated from one lithium cell or two Ni-Cd batteries without the need for pull-up or pull-down resistors. The EL8171 is compensated for a gain of 10 or more, while the EL8172 is compensated for a gain of 100 or more.
| Supply Voltage Range | 2.9V to 5V |
|---|---|
| Maximum Input Bias Current | 200 pA |
| -3dB Bandwidth (Gain=10) | 450 kHz |
| -3dB Bandwidth (Gain=100) | 170 kHz |
| Slew Rate | 0.5 V/µs |
| Output Load Current | +/- 29 mA |
| Gain Accuracy | 0.2% |
| Operating Temperature Range | -40°C to +85°C |
The amplifiers can be operated from a minimum supply voltage of 2.2V, though they are optimized for 2.9V to 5V.
Yes, the EL8171 and EL8172 can be operated from one lithium cell or two Ni-Cd batteries.
No, the output stage swings completely to ground or positive supply, so no pull-up or pull-down resistors are needed.
The typical input offset voltage for the EL8172 is 150 µV.