The SIM918 is a flexible preamplifier that features auto-zeroing that can be controlled remotely or from the front panel suitable for sensitive applications requiring minimal input offset voltage. Measured and nulled every 2 seconds is the DC voltage difference between the two inputs (current input and voltage bias) which results to less than 10 micro;V input offset voltage current amplifier. The device has input noise as low as 15fA/radic;Hz with adjustable current gain (106 to 108 V/A) and output voltage range is plusmn;10V for all gain settings. It comes with a voltage bias input that sets virtual ground potential to an external DC source.是一个灵活的前置放大器sim918特点动可用于最小的入偏移电压敏感的应用程序的程或控制板。测和清每2秒就有两个入端之的直流电压差入电流和电压偏差小于10微结果V入失电压电流放大器。置具有入噪声低15fa /基兹可电流增益106108 V / A和出电压围为±10V的所有增益置。它备了一个偏置电压入置拟接地电位的外直流电源。