OPA3S328 是一款精密的低电压 CMOS 运算放大器 (op amp),其集成开关针对灵活的跨阻应用进行了优化。低输入偏置电流和低输入电容允许在低光电流操作 (< 1nA) 下实现高频跨阻增益。OPA3S328 的集成开关、低偏移和轨到轨输出性能可在数十个电流值范围内实现高精度。小封装和集成开关允许可选择的跨阻增益并有助于减小空间受限应用的尺寸。
OPA3S328 采用零交叉输入技术,使输入共模范围具有灵活性,可以跨越整个电源电压范围而没有偏移偏差。该器件提供启用-禁用功能,以支持测试和测量中的便携式手持设备应用。禁用时,OPA3S328 输出阻抗通常为 100GΩ,允许使用多个跨阻通道的连线 OR 应用。
| Number of channels | 2 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) | 5.5 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) | 2.2 |
| Vos (offset voltage at 25°C) (max) (mV) | 0.06 |
| GBW (typ) (MHz) | 40 |
| Features | Shutdown, Small Size, Zero Crossover |
| Slew rate (typ) (V/µs) | 30 |
| Rail-to-rail | In, Out |
| Offset drift (typ) (µV/°C) | 0.15 |
| Iq per channel (typ) (mA) | 3.8 |
| Vn at 1 kHz (typ) (nV√Hz) | 9.8 |
| CMRR (typ) (dB) | 120 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 125 |
| Input bias current (max) (pA) | 10 |
| Iout (typ) (A) | 0.063 |
| Architecture | CMOS |
| Input common mode headroom (to negative supply) (typ) (V) | -0.1 |
| Input common mode headroom (to positive supply) (typ) (V) | 0.1 |
| Output swing headroom (to negative supply) (typ) (V) | 0.005 |
| Output swing headroom (to positive supply) (typ) (V) | -0.005 |
| THD + N at 1 kHz (typ) (%) | 0.00017 |
| DSBGA (YBJ) | 24 | 4 mm² 2 x 2 |
| VQFN (RGR) | 20 | 12.25 mm² 3.5 x 3.5 |