LPV542 是一款超低功耗双路运算放大器,带宽 8kHz,静态电流 490nA,是电池供电应用的理想选择,如医疗和健身可穿戴设备、楼宇自动化和遥感节点。
每个放大器的 CMOS 输入级偏置电流仅为皮安级,可以减少光电二极管和充电感测应用等兆欧级反馈电阻拓扑中引入的常见误差。 此外,输入共模范围扩展到电源轨,输出摆幅扩展到电源轨的 ±3mV 范围内,从而保持了最宽的动态范围。 同样,LPV542 设有 EMI 保护,可降低来自手机、WiFi、无线电发射器和标签阅读器的无用射频信号对系统造成的影响。
LPV542 可在 1.6V 的低电源电压下运行,确保在电池低电量的情况下保持出色性能。 该器件采用 8 焊盘 3mm x 3mm x 0.45mm 薄型无铅 X1SON 封装和标准 8 引脚 VSSOP 封装。
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| 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) | 1.6 |
| Rail-to-rail | In, Out |
| GBW (typ) (MHz) | 0.008 |
| Slew rate (typ) (V/µs) | 0.0037 |
| Vos (offset voltage at 25°C) (max) (mV) | 3 |
| Iq per channel (typ) (mA) | 0.00048 |
| Vn at 1 kHz (typ) (nV√Hz) | 250 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 125 |
| Offset drift (typ) (µV/°C) | 1 |
| Features | EMI Hardened |
| CMRR (typ) (dB) | 101 |
| Iout (typ) (A) | 0.03 |
| Architecture | CMOS |
| Input common mode headroom (to negative supply) (typ) (V) | 0.00085 |
| Input common mode headroom (to positive supply) (typ) (V) | 0.00048 |
| Output swing headroom (to negative supply) (typ) (V) | 0.002 |
| Output swing headroom (to positive supply) (typ) (V) | -0.003 |
| VSSOP (DGK) | 8 | 14.7 mm² 3 x 4.9 |
| X1SON (DNX) | 8 | 9 mm² 3 x 3 |