INA333 器件是一款低功耗的精密仪表放大器,具有出色的精度。该器件采用通用的三运算放大器设计,并且拥有小巧尺寸和低功耗特性,非常适合各类便携式 应用。
可通过单个外部电阻在 1 到 1000 范围内设置增益。INA333 设计为采用符合行业标准的增益公式:G = 1 + (100kΩ/RG)。
INA333 器件拥有超低的偏移电压(25μV,G ≥ 100),出色的偏移电压漂移
(0.1μV/°C,G ≥ 100),以及较高的共模抑制比(100dB,G ≥ 10)。该器件可由低至 1.8V (±0.9V) 的电源供电运行,静态电流仅为 50μA,因此非常适合电池供电类系统。INA333 器件采用自动校准技术在扩展工业温度范围内保证了出色的精度,同时还提供了向下扩展至直流的超低噪声密度 (50nV/√Hz)。
INA333 器件采用 8 引脚 VSSOP 和 WSON 表面贴装封装,额定温度范围 TA = –40°C 至 +125°C。
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| Number of channels | 1 |
| Vs (max) (V) | 5.5 |
| Vs (min) (V) | 1.8 |
| Input offset (±) (max) (µV) | 25 |
| Voltage gain (min) (V/V) | 1 |
| Voltage gain (max) (V/V) | 1000 |
| Noise at 1 kHz (typ) (nV√Hz) | 50 |
| Features | Low power, Small Size, Zero Drift |
| CMRR (min) (dB) | 100 |
| Input offset drift (±) (max) (V/°C) | 0.0000001 |
| Input bias current (±) (max) (nA) | 0.2 |
| Iq (typ) (mA) | 0.05 |
| Bandwidth at min gain (typ) (MHz) | 0.15 |
| Gain error (±) (max) (%) | 0.25 |
| Operating temperature range (°C) | -40 to 125 |
| Rating | Catalog |
| Type | Resistor |
| Gain nonlinearity (±) (max) (%) | 0.001 |
| Output swing headroom (to negative supply) (typ) (V) | 0.05 |
| Output swing headroom (to positive supply) (typ) (V) | -0.05 |
| Input common mode headroom (to negative supply) (typ) (V) | 0.1 |
| Input common mode headroom (to positive supply) (typ) (V) | -0.1 |
| Noise at 0.1 Hz to 10 Hz (typ) (µVPP) | 1 |
| VSSOP (DGK) | 8 | 14.7 mm² 3 x 4.9 |
| WSON (DRG) | 8 | 9 mm² 3 x 3 |