LTC202 On Resistance Testing

I used a simple voltage divider to check the variation in the on resistance of the LTC202.



In [1]:

    
%matplotlib inline
import numpy as np
import matplotlib as mpl
import matplotlib.pyplot as plt



In [2]:

    
Vapp = np.array([0.997, 0.099, 1.997, 2.996, -2.998, -2, -1, 0.5])
Vout = np.array([0.192, 0.042, 0.362, 0.531, -0.48, -0.313, -0.144, 0.108])



In [3]:

    
Rs = Vout * 469 / (Vapp - Vout)



In [5]:

    
plt.plot(Vapp, Rs, 'bo')









    Out[5]:





[<matplotlib.lines.Line2D at 0x110c82810>]



In [7]:

    
Va2 = np.array([-4, -3, -2, -1, -0.5, -0.1, 0, 0.1, 0.3, 0.5, 1, 2, 3, 4])
Vo2 = np.array([-4.684, -4.396, -4.106, -3.807, -3.657, -3.533, -3.505, -3.476, -3.415, -3.335, -3.198, -2.882, -2.565, -2.258])



In [11]:

    
Rs2 = (Vo2 + 5) * 469 / (Va2 - Vo2)



In [12]:

    
plt.plot(Va2, Rs2, 'bo')









    Out[12]:





[<matplotlib.lines.Line2D at 0x11106c550>]