Part Number:OPT3001-Q1
A e2e post wrote that the accuracy of ALS is 10%. Does 10% mean the accuracy between sample to sample (For example, when the ambient light is 2000lux, sample A outputs 1800lux, sample B outputs 2000lux, sample B outputs 1900lux…). Or 10% means the accuracy in just one sample (for example, when the anbient light is 2000lux, the output value of ALS will change between 1800 and 2200lux with the time going on?
Amy Luo:
您好,
精度是指OPT实际输出值与期望输出值或理想值之间的误差百分比。
截图中描述的 typical value,在实际计算时可以理解为期望值或理想值。
subtracting the maximum value from the typical value then dividing the result by the typical value. This is your maximum percentage error.
从典型值中减去最大值,然后将结果除以典型值,计算精度百分比。这是您的最大百分比误差。
Frank Wan 说:10% means the accuracy in just one sample (for example, when the anbient light is 2000lux, the output value of ALS will change between 1800 and 2200lux with the time going on?
这个理解应该是正确的,即测量环境光测量理想值如果是2000lux的话,OPT3001-Q1测量输出可能是在1800 ~2200lux之间,前提条件是测量lux在2k左右,工作温度在25°C。否则的话,需要按上面的2和3点增加误差百分点。