For ADC with 2.048V Reference. Accelerometer has a max output ~= 2.8V, 32k internal resistor and external 0.1uF capacitor.
R1 = 32k
R2 = 82.3k
Req = R1||R2 = 23.04k
C1 = 0.1uF
C2 = 38.2nF
Ceq = C1 + C2 = 138.2nF
Adc = R2/(R1 + R2) = 0.72V/V
f(-3dB) = 50Hz
A(s) = Adc/(1 + s*Req*Ceq)
