C8051F352 Datasheet, PDF (63/234 Pages) Silicon Laboratories – 8 k ISP Flash MCU Family

C8051F350/1/2/3
Table 5.5. ADC0 SINC3 Filter Effective Resolution¹
in Unipolar Mode (bits)
Decimation ^{Output Word}
PGA Gain Setting
Ratio
Rate²
1
2
4
8
16
32
64
128
1920
10 Hz
20.00 19.95 19.81 19.54 19.31 18.90 18.31 17.44
768
25 Hz
19.29 19.22 19.06 18.81 18.44 17.85 17.09 16.14
640
30 Hz
19.08 19.00 18.86 18.56 18.14 17.51 16.73 15.73
384
50 Hz
18.67 18.57 18.36 17.99 17.47 16.71 15.85 14.85
320
60 Hz
18.39 18.27 18.04 17.66 17.10 16.30 15.42 14.42
192
100 Hz
17.54 17.42 17.17 16.74 16.14 15.32 14.41 13.43
80
240 Hz
14.71 14.68 14.62 14.46 14.03 13.33 12.45 11.52
40
480 Hz
12.18 12.19 12.18 12.13 11.98 11.57 10.87 10.01
20
960 Hz
9.72 9.62 9.66 9.69 9.64 9.50 9.12 8.75
Notes:
1. Effective
resolution
=
log
2
⎛
⎝
F_-----u_--R-l_--l_-M-I_--n_--S--p_---u_-N--t_--oR---i-a_-s---ne_---(g_--V-e_----()_--V_----)_⎠⎞
where Full Input Range = --------^V----^R---^E---^F--------- in Unipolar mode and RMS Noise is obtained from Table 5.4.
PGA Gain
2. Output Word Rate assuming Modular Clock frequency = 2.4576 MHz
(sampling clock frequency = 19.2 kHz)
Table 5.6. ADC0 SINC3 Filter Flicker-Free (Noise-Free) Resolution¹
in Unipolar Mode (bits)
Decimation ^{Output Word}
PGA Gain Setting
Ratio
Rate²
1
2
4
8
16
32
64
128
1920
10 Hz
17.28 17.23 17.09 16.82 16.59 16.17 15.59 14.72
768
25 Hz
16.57 16.50 16.34 16.09 15.72 15.13 14.37 13.42
640
30 Hz
16.36 16.27 16.14 15.84 15.42 14.78 14.00 13.00
384
50 Hz
15.95 15.85 15.64 15.27 14.75 13.99 13.13 12.13
320
60 Hz
15.67 15.55 15.32 14.94 14.38 13.57 12.70 11.70
192
100 Hz
14.82 14.70 14.45 14.02 13.42 12.60 11.69 10.71
80
240 Hz
11.99 11.96 11.90 11.73 11.31 10.60 9.73 8.79
40
480 Hz
9.46 9.47 9.45 9.41 9.25 8.85 8.15 7.29
20
960 Hz
6.99 6.90 6.94 6.96 6.92 6.78 6.40 6.03
Notes:
1. Flicker-free
(Noise-free)
Resolution
=
log₂
⎛
⎝
-6^F---.-6^u---^l--_×^l--^I--_R-ⁿ---^pM---^u---_S-^t--^R--_N--^a--_o-ⁿ---_i-^g-_s--^ee---⁽⁽--^V-_V----⁾⁾_⎠⎞
where Full Input Range = --------^V----^R---^E---^F--------- in Unipolar mode and RMS Noise is obtained from Table 5.4.
PGA Gain
2. Output Word Rate assuming Modular Clock frequency = 2.4576 MHz (sampling clock frequency = 19.2 kHz)
Rev. 1.1
63